LTER Network News

Subscribe to LTER Network News feed
Updated: 2 hours 37 min ago

Summer Internships: Cedar Creek Ecosystem Science Reserve

Tue, 11/14/2017 - 11:49
Opportunity Type: Jobs

The Cedar Creek Ecosystem Science Reserve of the University of Minnesota has opportunities for students to work as plant community ecology interns, research field supervisors, ornithology technicians, and prescribed burn technicians. Many positions run from June through August, but some technicians will be needed as early as March and some are needed through October. As a research intern or technician, you will contribute to ongoing field experiments, have the opportunity to initiate individual research, attend scientific seminars, and interact with professors, post-docs, and graduate students. If you are an undergraduate or a newly graduated student with a background or interest in biology, ecology, environmental science, botany, environmental education, ornithology, or related field we encourage you to apply.

p>We have three large scale projects, along with several smaller scale experiments, that require most of our intern resources throughout the summer. BioCON is one of the large scale experiments where we explore the ways in which plant communities respond to environmental changes such as increased nitrogen deposition, increased atmospheric CO2, decreased biodiversity, altered precipitation patterns, and increased temperatures. Another large scale project is the Big Biodiversity experiment that studies how plant diversity affects the rates, dynamics, and stability of ecological processes at the population, community, and ecosystem levels. There are multiple experiments nested within the Big Biodiversity experiment as well, looking at factors such as irrigation and increased temperatures. The third large scale experiment, FAB, is looking at tree competition under different diversity levels. This experiment includes approximately 40,000 trees within a 30 acre field that will run for over 100 years. Throughout the summer we maintain and sample these experiments. We also have a couple of technician positions that will involve studying woodpecker behavior, habitat use, and nesting success throughout the spring and summer season at Cedar Creek.

The Cedar Creek Ecosystem Science Reserve itself is a nine square mile tract of land 35 miles north of the Twin Cities. Because of its fortunate location in mid-continent at the triple meeting point of three great biomes of North America, it carries much of the continent's biological heritage. Cedar Creek is endowed with a diverse mosaic of prairie, savanna, sedge meadows, bogs, open water, forests, and even abandoned agricultural fields. Its large size, great natural diversity, and uniform soil substrate make it ideal for ecosystem studies. To learn more detailed information about experiments, researchers, and the Cedar Creek area please visit our website at

To apply for any of the above intern positions please visit our website, The deadline for application submission is February 19th or 26th (depending on position). For any questions regarding the internships or application please email

Expiration Date: Mon, 2018-02-12Links: More informationRelated documents:  2018 Summer ecology internship announcement.pdf

Computational, Quantitative and/or Theoretical Biologist Assistant Professor

Mon, 11/13/2017 - 18:44
Opportunity Type: Jobs

The Department of Biology at Colorado State University (Fort Collins, Colorado) is recruiting a new tenure-track faculty member at the rank of ASSISTANT PROFESSOR who is addressing fundamental questions in biology using computational, quantitative and/or theoretical approaches. Relevant areas of interest include (but are not limited to) genomics/metagenomics/epigenomics, systems biology, synthetic biology, population genetics, epidemiology, ecological or evolutionary modeling/theory, and/or quantitative ecology. We envision an independent researcher who will develop a strong, extramurally-funded research program in one or more of these areas of inquiry. In particular, we are seeking applications from scientists who are interested in working in a highly collaborative department and are enthusiastic about teaching at both the undergraduate and graduate levels and contributing to the outreach mission of Colorado State University.

DEPARTMENT: The Department of Biology at Colorado State University (CSU) is one of eight departments in the College of Natural Sciences. The Department has a strong commitment to research and undergraduate and graduate teaching. The Department is home to about 1,550 undergraduate majors, 115 graduate students, 35 postdoctoral fellows, 10 non-tenure track faculty, and 30 regular faculty members. Research interests range from molecules to ecosystems. The successful candidate will be housed in a state-of-the-art biological sciences facility that opened in 2017. For more information about the Department, please visit:

RESPONSIBILITIES: This tenure-track position involves research (45 percent), undergraduate and graduate teaching (45 percent), and service/outreach (10 percent). The successful candidate will be expected to develop an extramurally funded and innovative research program, and to advance the department’s commitment to diversity and inclusion through research, teaching and outreach with relevant programs, goals and activities. The position involves training PhD- and MS-level graduate students, as well as teaching undergraduate and graduate courses in the candidate’s area of expertise and in the department’s core curriculum.

REQUIRED QUALIFICATIONS: Applicants must have a Ph.D. or equivalent degree in Biology or a related field by the time of their application and a research program in computational, quantitative and/or theoretical biology as demonstrated by publications in peer-reviewed journals.

PREFERRED QUALIFICATIONS: Postdoctoral experience, intellectual leadership, evidence of successful grant writing, broad background in computational/quantitative/theoretical techniques, biologically-based research program, teaching/mentoring experience, engagement in service/outreach/inclusivity activities, and experience working in a collaborative setting.

EMPLOYMENT CONDITIONS: This is a nine-month, full-time position. Salary and start-up funds will be commensurate with education and experience at the rank of Assistant Professor.

DATES AND RECORDS: The computational, analytical, and/or theoretical biology position will be available as early as August 15, 2018. Screening of applications will begin November 20, 2017 and continue until the position is filled.

TO APPLY, please submit an application consisting of a cover letter, current CV, statement of teaching philosophy (1-2 pages), statement of research (2-3 pages), and up to three representative publications and/or in-press manuscripts by November 19, 2017 to

Reference letter writers will be contacted immediately upon submission of application and will receive an email with a link to submit their letter. Reference letters must be received by November 26, 2017.

For full consideration, applications must be complete including reference letters by November 26, 2017. No mail-in applications or letters will be accepted.

Application materials of finalist candidates, including letters of reference, will be made available for review by the entire tenure-track faculty of the Department of Biology.

Inquiries concerning the position should be addressed to:
Melinda Smith, Professor and Chair of the Computational, Analytical and Theoretical Biologist Search Committee, E-mail:

Inquiries concerning the application should be addressed to:
Meagan Taverner, Office Manager and Computational, Analytical and Theoretical Biologist Search Staff. E-mail:

INTERDISCIPLINARY DEGREE PROGRAMS AT CSU: CSU provides a highly dynamic and interactive environment with opportunities to collaborate with faculty across the campus via several interdisciplinary graduate programs, including: the Cell and Molecular Biology Graduate Degree Program (, the Molecular, Cellular and Integrative Neurosciences Program (, the School of Biomedical Engineering Program (, the Program in Molecular Plant Biology (, and the Graduate Degree Program in Ecology ( ).

The CSU initiatives in science education are very broad including the College of Natural Sciences Education & Outreach Center (, CSU STEM center (, School of Global Environmental Sustainability (, and the School of Education (

UNIVERSITY AND LOCAL ENVIRONMENT: Colorado State University has a total enrollment of more than 33,000 full-time students. The campus is located in Fort Collins, a city of 165,000 residents 60 miles north of Denver along the beautiful front range of the Rocky Mountains. Other major employers in the community are Hewlett-Packard, Advanced Energy, Intel, Otter Products, UC Health, Woodward, New Belgium Brewing Company, and Anheuser-Busch. There are also several state and federal research agencies in Fort Collins that contribute to the intellectual environment of the university. The University of Colorado in Boulder, the University of Colorado Denver | Anschutz Medical Campus, and the University of Wyoming in Laramie are all within a one-hour drive. In addition to the many and varied cultural activities sponsored by the university, the community offers a center for performing arts, a symphony orchestra, repertory theater, choral society, and dance company. Rocky Mountain National Park and Roosevelt National Forest are within 30 miles of Fort Collins. Fort Collins has an excellent school system, and is consistently ranked in the Top 10 best places to live [].

Colorado State University is committed to providing an environment that is free from discrimination and harassment based on race, age, creed, color, religion, national origin or ancestry, sex, gender, disability, veteran status, genetic information, sexual orientation, gender identity or expression, or pregnancy and will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. Colorado State University is an equal opportunity/equal access/affirmative action employer fully committed to achieving a diverse workforce and complies with all Federal and Colorado State laws, regulations, and executive orders regarding non-discrimination and affirmative action. The Office of Equal Opportunity is located in 101 Student Services.

The Title IX Coordinator is the Executive Director of the Office of Support and Safety Assessment, 123 Student Services Building, Fort Collins, CO 80523 -2026, (970) 491-7407.

The Section 504 and ADA Coordinator is the Associate Vice President for Human Capital, Office of Equal Opportunity, 101 Student Services Building, Fort Collins, CO 80523-0160, (970) 491-5836.

Colorado State University (CSU) strives to provide a safe study, work, and living environment for its faculty, staff, volunteers and students. To support this environment and comply with applicable laws and regulations, CSU conducts background checks. The type of background check conducted varies by position and can include, but is not limited to, criminal (felony and misdemeanor) history, sex offender registry, motor vehicle history, financial history, and/or education verification. Background checks will be conducted when required by law or contract and when, in the discretion of the university, it is reasonable and prudent to do so.

Expiration Date: Sun, 2018-02-11

Graduate Student Opportunity: C and N cycling across a boreal-arctic gradient

Sat, 11/11/2017 - 20:43
Opportunity Type: Graduate student

The Institute of Arctic Biology, University of Alaska Fairbanks has an opening for an M.S. graduate student to work with Roger Ruess and Donie Bret-Harte on an NSF-funded project on shrub feedbacks to C and N cycling along a boreal-arctic transect in northern Alaska. A widespread shift from tundra to deciduous shrub-dominated vegetation appears to be underway in northern Alaska, which could have profound implications for C balance and biogeochemical cycling. Because much of the Earth’s soil C is stored in arctic and boreal regions, changes in the C budgets of these biomes may feedback strongly to global climate. Biogeochemical C and N cycles are linked tightly in boreal and arctic ecosystems, and plant production is strongly N-limited; therefore, N-fixing shrubs affect soil C through their effects on near-surface soil N, via both SOM turnover and N inputs.

The graduate student will focus on the effects of the growth and ecophysiology of Siberian alder on biogeochemical cycling across topo-edaphic sequences along a latitudinal transect from the boreal forest (BNZ LTER) to arctic tundra (ARC LTER). The student will be expected to develop their own research questions within the overall framework of the project, and will have the opportunity to interact with PIs and other graduate students working on project.

Because research sites are distributed between Fairbanks and areas north of the Toolik Field Station (see, the graduate student will be conducting research and camping in very rugged/remote terrain. The student will be supported through a combination of research assistantships and teaching assistantships, and expected to begin fieldwork in the summer of 2018, and coursework in the fall of 2018.

For more information, please contact Roger Ruess ( or Syndonia Bret-Harte ( You must also apply for graduate study to the Department of Biology and Wildlife at University of Alaska Fairbanks (see for application requirements); the deadline for applications is January 15, 2018.

Expiration Date: Fri, 2018-02-09

Coastal Scientist Position at University of Georgia

Sat, 11/11/2017 - 20:30
Opportunity Type: Jobs

Assistant or Associate Professor in Marine Sciences

The UGA Dept. of Marine Sciences in the Franklin College of Arts and Sciences seeks to hire a coastal scientist who conducts research on population, community or ecosystem ecology. This is a full-time, 9-month, tenure track position at the Assistant or Associate Professor level that will start in August 2018. The candidate is expected to have a research focus on the ecology of coastal systems and to actively participate in the Georgia Coastal Ecosystems Long-Term Ecological Research (GCE-LTER) Project, which is based at the UGA Marine Institute on Sapelo Island. We wish to hire an outstanding scientist with the potential to take a leadership role in coastal research and the GCE-LTER program, who can work collaboratively with ecologists, oceanographers, biogeochemists, modelers and natural resource managers. Candidates should also be able to teach courses such as Marine Biology or Marine Ecology, as well as advanced courses in their area of specialization.

The Dept. of Marine Sciences has faculty located on both the UGA main campus in Athens, where the position will be located, and Skidaway Institute of Oceanography in Savannah, GA. On the Athens campus there are opportunities to directly interact with faculty in the Odum School of Ecology, the Warnell School of Forestry and Natural Resources, and multiple departments in the Franklin College of Arts and Sciences including Plant Biology, Genetics, Microbiology, Geology, and Geography. The Franklin College of Arts and Sciences, its many units, and the University of Georgia are committed to increasing the diversity of its faculty and students, and sustaining a work and learning environment that is inclusive.

The candidate must have a Ph.D. in Marine Sciences or a related area. Candidates to be considered for Associate Professor must meet the Associate criteria detailed in the Department of Marine Science’s Promotion and Tenure guidelines. In addition to a Ph.D. in Marine Sciences or a related area, at least one year of postdoctoral experience, as well as a record that provides evidence of scholarship, synergistic activities, and the potential to obtain extramural funding is preferred. Candidates with at least one year of experience teaching University courses in the fields of Marine Science or Ecology are preferred.

Inquiries about the position should be directed to Dr. Merryl Alber, Chair of the Search Committee ( All application materials must be submitted via the university’s faculty job portal located at Materials to be uploaded include i) cover letter addressing the candidate’s experience relative to the responsibilities of the position, ii) curriculum vitae, iii) statement of research accomplishments and goals (not to exceed 3 pages), iv) statement of teaching accomplishments and philosophy (not to exceed 3 pages), v) three example publications, and vi) names and contact information of three professional references. Selected applicants will be required to submit a background investigation demonstrating eligibility for employment with the University of Georgia. This position is available August 2018. Applications received by 1 January 2018 are assured full consideration; however, applications will be accepted until the position is filled.

The University of Georgia is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, gender identity, sexual orientation or protected veteran status. Persons needing accommodations or assistance with the accessibility of materials related to this search are encouraged to contact Central HR ( Please do not contact the department or search committee with such requests.

Expiration Date: Fri, 2018-02-09Links: Apply

2017 AGU Abstracts

Wed, 11/08/2017 - 17:39

The events that shape and reshape ecosystems can be infrequent and often unpredictable. Conditions from past decades can profoundly affect the ways that today's forests, fields, and oceans function.

The 28 sites of the NSF-funded Long-Term Ecological Research (LTER) Network employ experiments, observation and modeling to understand ecological processes that play out over long times scales.

At the 2017 AGU Fall Meeting, held at the New Orleans Ernest N. Morial Convention Center in New Orleans, Louisiana, from December 11-15, 2017, dozens of LTER researchers will present new results on a range of topics, from how ecosystems recover from droughts and hurricanes to what manufactured ice storms can reveal about how to prepare for winter's worst. 

Highlights of LTER research being presented at the AGU Fall Meeting include: 

  • an all-day bonanza of research on Arctic ecosystems on Monday;
  • studies on when and how ecosystems move across the landscape;
  • results of artificial ice storm, drought, and hurricane experiments;
  • novel uses of remote sensing to detect vegetation structure and below-ground processes;
  • sessions on integrating indigenous and western science, observations, and perspectives.

Find a list of LTER science-related sessions, talks, and posters by day below. Oral presentations are listed in bold font.

Monday, December 11, 2017

Session B11J: The Resilience and Vulnerability of Arctic and Boreal Ecosystems to Climate Change I
8:00-10:00 - New Orleans Ernest N. Morial Convention Center - 356-357

IN11F-07: The Environmental Data Initiative data repository: Trustworthy practices that foster preservation, fitness, and reuse for environmental and ecological data
9:05-9:15 - New Orleans Ernest N. Morial Convention Center - 231-232

GC12B-01: Utilizing Landsat 8 to measure kelp physiological health in the Santa Barbara Channel
10:20-10:35 - New Orleans Ernest N. Morial Convention Center - 265-266

Session B12C: The Resilience and Vulnerability of Arctic and Boreal Ecosystems to Climate Change II
10:20-12:20 - New Orleans Ernest N. Morial Convention Center - 356-358

  • B12C-01: Assessing Effects of Climate Change on Access to Ecosystem Services in Rural Alaska: Enhancing the Science through Community Engagement (Invited)
    10:20-10:35 - New Orleans Ernest N. Morial Convention Center - 356-357

IN12B-04: The Environmental Data Initiative: A broad-use data repository for environmental and ecological data that strives to balance data quality and ease of submission
11:05-11:20 - New Orleans Ernest N. Morial Convention Center - 231-232

GC12B-07: Ghost forest creation and the conversion of uplands to wetlands (Invited)
11:50-12:05 - New Orleans Ernest N. Morial Convention Center - 265-266

Session B13J: The Resilience and Vulnerability of Arctic and Boreal Ecosystems to Climate Change III
13:40-15:40 - New Orleans Ernest N. Morial Convention Center - 356-357

  • B13J-04: Impacts of climate and insect defoliators on productivity and function of trembling aspen (Populus tremuloides) in Alaskan boreal forests
    14:16-14:28 - New Orleans Ernest N. Morial Convention Center - 356-357

Session B14A: The Resilience and Vulnerability of Arctic and Boreal Ecosystems to Climate Change IV
16:00-18:00 - New Orleans Ernest N. Morial Convention Center - 356-357

  • B14A-01: The Arctic Boreal Vulnerability Experiment (ABoVE) 2017 Airborne Campaign
    16:00-16:15 - New Orleans Ernest N. Morial Convention Center - 365-357

GC14B-01: Centennial-scale human alterations, unintended natural-system responses, and event-driven mitigation within a coupled fluvial-coastal system: Lessons for collective management and long-term coastal change planning
16:00-16:15 - New Orleans Ernest N. Morial Convention Center - 265-266

GC14C-01: Solute-specific patterns and drivers of urban stream chemistry revealed by long-term monitoring in Baltimore, Maryland (Invited)
16:00-16:15 - New Orleans Ernest N. Morial Convention Center - 267-268

H14A-03: The effects of drought-induced mortality on the response of surviving trees in pinon-juniper woodlands
16:30-16:45 - New Orleans Ernest N. Morial Convention Center - 295-296

B14C-02: Understanding Tropical Forest Abiotic Responses to Canopy Loss and Biomass Deposition from an Experimental Hurricane Manipulation
16:15-16:30 - New Orleans Ernest N. Morial Convention Center - 383-385

Morning Poster Session
08:00-12:20 - New Orleans Ernest N. Morial Convention Center - Poster Hall D-F​

GC11C-0750: Assessing diversity of prairie plants using remote sensing

Afternoon Poster Session
13:40-18:00 - New Orleans Ernest N. Morial Convention Center - Poster Hall D-F

B13H-1852: Representation of physiological drought at ecosystem level based on model and eddy covariance measurements

B13F-1819: Microbial C:P stoichiometry is shaped by redox conditions along an elevation gradient in humid tropical rainforests

B13G-1824: Century-scale Variations in Plant and Soil Nitrogen Pools and Isotopic Composition in Northern Hardwood Forests

Tuesday, December 12th, 2017

H21R-01: Integrating terrestrial through aquatic processing of water, carbon and nitrogen over hot, cold and lukewarm moments in mixed land use catchments (Invited)
8:00-8:15 - New Orleans Ernest N. Morial Convention Center - 278-279

H21M-02: Soil Surface Sealing Reverse or Promote Desertification?
8:15-8:30 - New Orleans Ernest N. Morial Convention Center - 295-296

H21M-08: Deep Percolation in Arid Piedmont Slopes: Multiple Lines of Evidence Show How Land Use Change and Ecohydrological Properties Affect Groundwater Recharge
9:45-10:00 - New Orleans Ernest N. Morial Convention Center - 295-296

B22C-04: Cross-Network Canopy structural complexity predicts forest canopy light absorption continental scales
11:05-11:20 - New Orleans Ernest N. Morial Convention Center - 383-385

EP22B-06: Assessing the Potential for Inland Migration of a Northeastern Salt Marsh
11:35-11:50 - New Orleans Ernest N. Morial Convention Center - 353-355

U24B-07: Observations and simulations of snowpack cold content and its relationship to snowmelt timing and rate
14:21-14:24 - New Orleans Ernest N. Morial Convention Center - eLightning Area

B23G-04: Detecting Below-Ground Processes, Diversity, and Ecosystem Function in a Savanna Ecosystem Using Spectroscopy Across Different Vegetation Layers
14:25-14:40 - New Orleans Ernest N. Morial Convention Center - 383-385

B23G-05: Remote Sensing of a Manipulated Prairie Grassland Experiment to Predict Belowground Processes
14:40-14:55 - New Orleans Ernest N. Morial Convention Center - 383-385

GC24B-01: How will wind and water erosion change in drylands in the future?
16:00-16:30 New Orleans Ernest N. Morial Convention Center 298-299

B24D-03: Variation in salt marsh CO2 fluxes across a latitudinal gradient along the US Atlantic coast
16:30-16:45 - New Orleans Ernest N. Morial Convention Center - 356-357

Morning Poster Session
08:00-12:20 - New Orleans Ernest N. Morial Convention Center - Poster Hall D-F

B21D-1981: Fostering Collaboration Across the U.S. Critical Zone Observatories Network

Session B21F: The Resilience and Vulnerability of Arctic and Boreal Ecosystems to Climate Change V: Posters

  • B21F-2019: Vertebrate Herbivore Browsing on Neighboring Forage Species Increases the Growth and Dominance of Siberian Alder Across a Latitudinal Transect in Northern Alaska

GC21F-1004: Combining multiple approaches and optimized data resolution for an improved understanding of stream temperature dynamics of a forested headwater basin in the Southern Appalachians

GC21H-1034: Episodic Salinization of Urban Rivers: Potential Impacts on Carbon, Cation, and Nutrient Fluxes

Afternoon Poster Session
13:40-18:00 - New Orleans Ernest N. Morial Convention Center - Poster Hall D-F

B23A-2055: Aerosolization of cyanobacterial cells across ecosystem boundaries in the McMurdo Dry Valleys, Antarctica

B23A-2057: A Process-Based Transport-Distance Model of Aeolian Transport

B23C-2073: Spatially Resolved Carbon Isotope and Elemental Analyses of the Root-Rhizosphere-Soil System to Understand Below-ground Nutrient Interactions

C23C-1228: Groundwater and Thaw Legacy of a Large Paleolake in Taylor Valley, East Antarctica as Evidenced by Airborne Electromagnetic and Sedimentological Techniques

C23C-1229: Thin, Conductive Permafrost Surrounding Lake Fryxell Indicates Salts From Past Lakes, McMurdo Dry Valleys, Antarctica

C23C-1233: Partitioning of sublimation and evaporation from Lake Bonney using water vapor isotope and latent heat fluxes

C23C-1234 MCM Moat Development and Evolution on a Perennialy Ice-Covered Lake in East Antarctica

GC23B-1061: Spatial and temporal trends in water temperature in the Virginia coastal bays 

H23E-1728: Determination of Tree and Understory Water Sources and Residence Times Using Stable Isotopes in a Southern Appalachian Forest

Wednesday, December 13, 2017

B31H-01: Using the Critical Zone Observatory Network to Put Geology into Environmental Science
8:00-8:05 - New Orleans Ernest N. Morial Convention Center- 383-385

ED32B-02: Articles of Data Confederation: DataONE, the KNB, and a multitude of Metacats-- scaling interoperable data discovery and preservation from the lab to the Internet
10:35-10:50 - New Orleans Ernest N. Morial Convention Center - 242

OS32A-04: Tidal Wetlands and Coastal Ocean Carbon Dynamics
11:06-11:18 - New Orleans Ernest N. Morial Convention Center - 275-277

B32D-06: Wildfire, legacy carbon combustion, and the centennial carbon balance of permafrost ecosystems
11:35-11:50 - New Orleans Ernest N. Morial Convention Center - 386-387

    Session H33O: Water, Energy, and Society in Urban Systems I
    13:40-15:40 - New Orleans Ernest N. Morial Convention Center - 293-294

    Session H34H: Water, Energy, and Society in Urban Systems II
    16:00-18:00 - New Orleans Ernest N. Morial Convention Center - 293-294

    Morning Poster Session
    08:00-12:20 - New Orleans Ernest N. Morial Convention Center - Poster Hall D-F

    B31D-2030: Evaluating productivity-biodiversity relationship and spectral diversity in prairie grasslands under different fire management treatments using in-situ and remote sensing hyperspectral data morning -

    B31F-2050: Multi-Scale Analysis of Trends in Northeastern Temperate Forest Springtime Phenology 

    EP31D-1895: Remote Sensing of Colville River Navigability to Aid Subsistence Travel, Nuiqsut AK 

    Session H31I: Water, Energy, and Society in Urban Systems III Posters

    • H31I-1626: Spatial and Temporal Patterns of Suspended Sediment Yields in Nested Urban Catchments
    • H31I-1629: Monitoring Urban Stream Restoration Efforts in Relation to Flood Behavior Along Minebank Run, Towson, MD
    • H31I-1630 Mitigation of Flood Hazards through Modification of Urban Channels and Floodplains

    NH31A-0209: Evaluation of Unmanned Aircraft System (UAS) to Monitor Forest Health Conditions in Alaska

    Afternoon Poster Session
    13:40-18:00 - New Orleans Ernest N. Morial Convention Center - Poster Hall D-F

    B33C-2093: Dryland ecosystem responses to precipitation extremes and wildfire at a long-term rainfall manipulation experiment

    B33C-2099: Investigating and Modeling Ecosystem Response to an Experimental and a Natural Ice Storm

    B33C-2100: A Novel Ice Storm Experiment for Evaluating the Ecological Impacts of These Extreme Weather Events

    B33D-2101: Snapshot science: new research possibilities facilitated by spatially dense data sets in limnology

    B33D-2103: Integrating time-series and spatial surveys to assess annual, lake-wide emissions of carbon dioxide and methane from a eutrophic lake

    Thursday, December 14, 2017

    Session ED41C: Climate Literacy: Successes and Strategies in Youth Engagement in Building Resilience to Climate Change Impacts in Vulnerable Communities with Citizen Science Il
    8:00 - 10:00 - New Orleans Ernest N. Morial Convention Center - 242

    B21K-03: Environmental controls of daytime leaf carbon exchange: Implications for estimates of ecosystem fluxes in a deciduous forest
    8:30-8:45 - New Orleans Ernest N. Morial Convention Center - 383-385

    B41L-03: Expanding dryland ecosystem flux datasets enable novel quantification of water availability and carbon exchange in Southwestern North America (Invited)
    8:30-8:45 - New Orleans Ernest N. Morial Convention Center - 388-390

    A42D-02: A High Resolution Land Cover Data Product to Remove Urban Density Over-Estimation Bias for Coupled Urban-Vegetation-Atmosphere Interaction Studies
    10:35-10:50 - New Orleans Ernest N. Morial Convention Center - 398-399

    PA42A-09: Dirt: Integrating Scientific and Local Knowledge to Support Global Land Management 11:00-11:05 - New Orleans Ernest N. Morial Convention Center - 255-257

    PA42A-12: My geoscience research and how it matters to you: Corn, climate, and classrooms
    11:15-11:20 - New Orleans Ernest N. Morial Convention Center - 255-257

    H42F-07: Variability in isotopic composition of baseflow in two headwater streams of the southern Appalachians (Invited)
    11:22-11:32 - New Orleans Ernest N. Morial Convention Center - 280-282

    Session B43J: Drivers of Vegetation Change and Impacts on Biogeochemical and Biogeophysical Processes in Arctic Tundra Ecosystems II
    13:40-15:40 - New Orleans Ernest N. Morial Convention Center - 386-387

    • B43J-08: The role of deep nitrogen and dynamic rooting profiles on vegetation dynamics and productivity in response to permafrost thaw and climate change in Arctic tundra
      15:25-15:40 - New Orleans Ernest N. Morial Convention Center - 386-387

    H43O-05: Long-term stream discharge and chemistry observations reveal unexpected ecosystem dynamics: Coweeta Watershed 7 clearcut manipulation
    ​14:40-14:55 - New Orleans Ernest N. Morial Convention Center - La Nouvelle C

    B44B-04: Using NEON Data to Test and Refine Conceptual and Numerical Models of Soil Biogeochemical and Microbial Dynamics
    16:45-17:00 - New Orleans Ernest N. Morial Convention Center - 386-387

    B44C-08: Evidence of a robust relationship between solar-induced chlorophyll fluorescence and gross primary productivity across dryland ecosystems of southwestern North America
    17:45-18:00 - New Orleans Ernest N. Morial Convention Center - 383-385

    Morning Poster Session
    08:00-12:20 - New Orleans Ernest N. Morial Convention Center - Poster Hall D-F

    A41A-2244: Near-Simultaneous Measurement of Ground Level Carbon Dioxide and Methane Concentrations with an Open-Path Tunable Diode Laser Sensor at the Bonanza Creek Long Term Ecological Research site near Fairbanks, Alaska

    B41D-1971: Soil Organic Matter Stabilization via Mineral Interactions in Forest Soils with Varying Saturation Frequency

    Session B41A: Drivers of Vegetation Change and Impacts on Biogeochemical and Biogeophysical Processes in Arctic Tundra Ecosystems I Posters

    • B41A-1936: Long term fertilization, but not warming, shifts rates of ectomycorrhizal nutrient cycling in Arctic tussock tundra
    • B41A-1937: Plant, Microbiome, and Biogeochemistry: Quantifying moss-associated N fixation in Alaska

    B41C-1962: What Do the Numbers Say? Clarifying Our Interpretation of Carbon Use Efficiency Data from Soil

    B41C-1969: Different Mechanisms of Soil Microbial Response to Global Change Result in Different Outcomes in the MIMICS-CN Model

    H41C-1454: Analysis of streamflow distribution of non-point source nitrogen export from long-term urban-rural catchments to guide watershed management in the Chesapeake Bay watershed

    H41D-1470: Improving Understanding of Spatial Heterogeneity in Mountain Ecohydrology with Multispectral Unmanned Aerial Systems (UAS)

    IN41A-0029: Quantifying vegetation distribution and structure using high resolution drone-based structure-from-motion photogrammetry

    Afternoon Poster Session
    13:40-18:00 - New Orleans Ernest N. Morial Convention Center - Poster Hall D-F

    A43E-2505: Time Dependence of Aerosol Light Scattering Downwind of Forest Fires

    B43C-2145: Stochastic spatio-temporal model of coral cover as a function of herbivorous grazers, water quality, and coral demographics

    EP43A-1867: Characterizing Process-Based River and Floodplain Restoration Projects on Federal Lands in Oregon, and Assessing Catalysts and Barriers to Implementation

    H34F-1716: Spatial and Temporal Dynamics of Carbon Fluxes in Glacial Meltwater Streams, Antarctica

    Friday, December 15, 2017

    Session U51A-06: Linking Research, Education, and Public Engagement in Geoscience: Leadership and Strategic Partnerships
    ​8:00 - 10:00 - New Orleans Ernest N. Morial Convention Center - E2

    Session B51K: Asymmetric Responses of Ecosystems to Changing Precipitation Regimes: Theory, Experiments, and Modeling Approaches I
    8:00-10:00 - New Orleans Ernest N. Morial Convention Center - 356-357

    • B51K-01: Asymmetry in ecosystem responses to precipitation: Theory, observation and experimentation
      8:00-8:15 - New Orleans Ernest N. Morial Convention Center - 356-357
    • B51K-08: Asymmetric Responses of Primary Productivity to Altered Precipitation Simulated by Land Surface Models across Three Long-term Grassland Sites
      9:45-10:00 - New Orleans Ernest N. Morial Convention Center - 356-357

    B51L-01: Fire Frequency and Vegetation Composition Influence Soil Nitrogen Cycling and Base Cations in an Oak Savanna Ecosystem (Invited)
    8:00-8:15 - New Orleans Ernest N. Morial Convention Center - 245

    B51N-03: Estimating patterns in Spartina alterniflora belowground biomass within salt marshes 8:30-8:45 - New Orleans Ernest N. Morial Convention Center - 386-387

    B51L-06 Soil Biogeochemical and Biophysical Footprint of Forest to Pasture Conversion in the Western Pyrenees Mountains, France
    9:15-9:30 - New Orleans Ernest N. Morial Convention Center - 245

    PA52A-02: Collaborative Projects Weaving Indigenous and Western Science, Knowledge and Perspectives in Climate Change Education (Invited)
    10:34-10:50 - New Orleans Ernest N. Morial Convention Center - 255-257

    B52B-02: Saltwater intrusion coupled with drought accelerates carbon loss from a brackish coastal wetland
    10:35-10:50 - New Orleans Ernest N. Morial Convention Center - 386-387

    B53G-02: Long-term records reveal decoupling of nitrogen and phosphorus cycles in a large, urban lake in response to an extreme rainfall event
    13:55-14:10 - New Orleans Ernest N. Morial Convention Center - 365-357

    B53H-02: A soil-landscape framework for understanding spatial and temporal variability in biogeochemical processes in catchments (Invited)
    13:55-14:10 - New Orleans Ernest N. Morial Convention Center - 386-387

    B53J-02: Subsurface soil carbon losses offset surface carbon accumulation in abandoned agricultural fields
    14:20-14:25 - New Orleans Ernest N. Morial Convention Center - 383-385

    B54B-08: Effects of rhododendron removal on the water use of hardwood species following eastern†hemlock mortality
    17:45-18:00 - New Orleans Ernest N. Morial Convention Center - 388-390 Session

    Morning Poster Session
    08:00-12:20 - New Orleans Ernest N. Morial Convention Center - Poster Hall D-F

    B51B-1798: Drivers of spatial heterogeneity in nitrogen processing among three alpine plant communities in the Rocky Mountains

    B51F-1869: Effects of nitrogen enrichment on soil organic matter in tropical forests with different ambient nutrient status

    B51G-1895: Landscape-scale soil moisture heterogeneity and its influence on surface fluxes at the Jornada LTER site: Evaluating a new model parameterization for subgrid-scale soil moisture variability

    B51I-1941: A Spatial-Temporal Comparison of Lake Mendota CO2 Fluxes and Collection Methods 

    H51F-1343: Modeling alpine grasslands with two integrated hydrologic models: a comparison of the different process representation in CATHY and GEOtop

    Afternoon Poster Session
    13:40-18:00 - New Orleans Ernest N. Morial Convention Center - Poster Hall D-F

    Session ED53A: Climate Literacy: Successes and Strategies in Youth Engagement in Building Resilience to Climate Change Impacts in Vulnerable Communities with Citizen Science I Posters

    B53B-1952: Comparing carbon to carbon: Organic and inorganic carbon balances across nitrogen fertilization gradients in rainfed vs. irrigated Midwest US cropland

    B53C-1964: Modeled Carbon Cycle Responses to Altered Precipitation Amount and Interannual Variation in Desert Grassland

    B53D-1975: Modeling N Cycling during Succession after Forest Disturbance: an Analysis of N Mining and Retention Hypothesis

    B53F-1999: Evaluation of forest management practices through application of a biogeochemical model, PnET-BGC

    PA53A-0255: I get by with a little help from my friends: A case study in Holy Cross and Grayling using geographic, ethnographic, and biophysical data to tell the story of climate change effects in the lower-middle Yukon River region

    Audience: Media ProfessionalsResearchersStudents

    2018 LTER All Scientists' Meeting

    Thu, 10/26/2017 - 13:42

    Planning for the 2018 LTER All Scientists' Meeting is underway.

    Location: Asilomar Conference Grounds, Pacific Grove, CA
    September 30, 2018: Science Council and other committee meetings
    October 1-4, 2018: Main Meeting

    Planning Committee:

    • Sven Bohm, Kellogg Biological Station LTER, Information Management Committee
    • Frank Davis, Network Communications Office
    • Marty Downs, Network Communications Office
    • Melany Fisk, Hubbard Brook LTER
    • Amber Hardison, Beaufort Lagoon Ecosystems LTER
    • Jill Haukos, Konza LTER, Education and Outreach Committee
    • Siddharth Iyengar, Cedar Creek LTER, Graduate Student Committee
    • Paul Julian, Florida Coastal Everglades LTER, Graduate Student Committee
    • Rachael Morgan-Kiss, McMurdo Dry Valleys LTER
    • Michael Neubert, Northeast Shelf LTER
    • Jennifer Rehage, Florida Coastal Everglades LTER
    • Katharine Suding, Niwot Ridge LTER
    • Christpher Swan, Baltimore Ecosystem Study LTER

    Shaping the Alaskan Forest. Canopy-down or forest-floor-up?

    Wed, 10/25/2017 - 17:53

    Image Credit: Flickr/Joseph

    While Florida, Texas, and Puerto Rico recover from a devastating hurricane season, another natural disaster rages on the other side the continent. Following a record-hot summer and dry conditions, the northwestern United States and Canada have experienced one of the most intense fire seasons on record. As global temperatures rise, scientists will need a better understanding of how high-latitude, boreal forest ecosystems respond to changing fire regimes. A study by Bonanza Creek Long Term Ecological Research (BNZ-LTER) researchers found that boreal wildfires can displace dominant tree species and alter understory bryophyte populations, ultimately changing forest composition, structure, and function.

    Boreal forests in Alaska’s interior are mainly composed of coniferous trees, whose open canopy and low leaf litter allow bryophytes to thrive and carpet the forest floor. Bryophytes are non-vascular plants, such as liverworts, hornworts, and mosses that dominate the understories of boreal forests. These small plants play an important role in maintaining ecosystem health and resiliency since they help build organic layers, enhance soil insulation, retain soil moisture, increase soil nitrogen, and re-establish permafrost after fire events. Ecological disturbances, such as fires, can alter canopy composition, changing bryophyte communities and thus forest ecosystem structure, function, and resiliency.

    The researchers measured bryophyte abundance and species composition, as well as soil organic layers, moisture, and temperature in 83 stands in Alaska’s interior forests. All 83 stands had similar environmental conditions, but ranged from 8 to 163 years in post-fire age and varied in canopy dominance between coniferous, deciduous, and mixed forest types.

    During the early successional stage (6 to 20 years after the fire), all 83 sites had high bryophyte abundance and similar species composition. However, during the mid- to late-successional stages (over 20 years after the fire), increased leaf litter production in deciduous forest stands resulted in fewer bryophytes. Coniferous stands in the mid to late successional stage had more bryophyte abundance, but tended to be dominated by feather mosses, which enhance soil organic layers, nitrogen fixation, carbon storage, permafrost stability, and further support coniferous abundance.

    As boreal wildfires increase in their severity and frequency, the potential to shift towards mixed and deciduous tree dominance could be reinforced by changes in the understory community.

    A bigger role for light in dryland decomposition

    Wed, 10/25/2017 - 17:38

    Image Credit: Flickr/Alyson Hurt

    It’s kind of amazing what you can learn by taking a fresh look at old data. A re-analysis of data from a large and influential decomposition experiment suggests that—at least in arid lands—the degradation of organic matter by light plays a much bigger role than previously understood.

    Back in 1990, an ambitious group of LTER scientists packed ten standard types of leaf and root litter—with widely varying chemistry—into thousands of mesh bags and asked their colleagues at 28 research sites to put them out in the field to decompose. Collected and analyzed every year over the next decade, this rich data set from the Long-term Intersite Decomposition Experiment Team (LIDET) study had tremendous influence on how ecologists understand and predict decomposition.

    The “biotic” model that emerged from the LIDET study considered the ratios of cellulose, lignin, and soluble carbon in litter, as well as initial nitrogen content, climate, and soil conditions. It did a good job of predicting decomposition for most sites and the approach was incorporated into many standard ecosystem models.
    In the nearly two decades since the LIDET results appeared, photodegradation of organic matter has come to be recognized as a potentially important driver of decomposition, especially at arid sites. This new study uses the LIDET data from three arid sites in the original study to evaluate 59 models that incorporate photodegradation.

    One model stood out as a much better descriptor of decomposition dynamics for these sites. Its success suggests that, even now, the current understanding of photodegradation is incomplete. Key features of this successful model include losses from cellulose and lignin pools that do not accrue to the fast-turnover labile pool. It also allowed UV radiation to slow microbial decomposition rates and soil infiltration to “shade” litter from the effects of UV light.

    The two types of models performed similarly in the first four years of decomposition, but diverged significantly in years 4-10, with the new photodegradation model coming much closer to the measured results. As drylands expand and get drier, better predictions of carbon turnover will depend on better understanding of photodegradation. Good thing they knew where to find that data!

    Tracking the king of the swamp

    Wed, 10/25/2017 - 17:33

    Image Credit: Pixabay/Pexels

    Radio transmitters have moved beyond the days of talking to your friends through walkie talkies. They are now being used to track alligators, the rulers of the swamp, to learn more about their movements between freshwater and marine environments. Once attached, the GPS and radio transmission devices can track the alligator’s movements for up to four months. With the use of these devices, scientists from the Georgia Coastal Ecosystems LTER site were able to determine that time spent in each ecosystem is dependent on multiple physical factors within the environment, such as tidal range and temperature.

    Unlike their cousins the crocodiles, alligators do not have salt glands and therefore lack the traits necessary to survive full-time in salt water. They move back and forth between marine and freshwater ecosystems to feed and rebalance their salt levels. By tracking the alligators, the scientists discovered the most important factor influencing the duration of trips to the marine environments was maximum water depth, a proxy for tidal range.

    The team found that alligators remained in marine habitats for longer periods of time around spring tide events, where there is the greatest difference between high and low tides. Spring tides mean one thing for these alligators: more food. Due to the extreme high and low tidal heights, water speeds increase and displace common marine prey such as small fish and crustaceans. Additionally, the extremely low water depths isolate and concentrate aquatic prey. Both of these spring tide factors make it easier for the alligators to feed and explains why they spend more time in marine environments around spring tides.

    Other physical factors contribute to patterns of movement, such as temperature and precipitation, which are associated with the need to balance salt and water intake. By understanding which factors contribute to the movement between ecosystems, managers will gain a better understanding of the alligator’s ecological impact on coastal ecosystems and be able to target conservation priority areas for the alligator.

    Call for Proposals - Powell Center Synthesis Activities

    Mon, 10/23/2017 - 14:29
    Opportunity Type: Funding

    The John Wesley Powell Center for Earth System Science Analysis and Synthesis fosters innovative thinking in Earth system science through collaborative synthesis activities. This mission is driven by the growing recognition that synthesis is critical to solving complex problems facing society. To date, the Center has successfully hosted 46 working groups that have produced over 125 publications, many in top-ranked journals.

    We invite interdisciplinary Working Groups comprised of USGS researchers and their national and international colleagues in academia and government to submit proposals. Working Groups collaborate to promote understanding through analysis of existing data and information. Groups that submit successful proposals will receive computing and data management support, funding for a Fellow, opportunities for meetings in Fort Collins, CO, and between-meeting collaborative tools. Proposals are invited for projects that will begin on or after October 1, 2018.

    Some proposals may be jointly funded by USGS and the National Science Foundation (NSF) Directorate for Geosciences (GEO) Division of Earth Sciences (EAR). Potential USGS/GEO/EAR proposals should follow Powell submission guidelines and will be processed through the Powell Center Science Advisory Board review process. Instructions for proposal preparation and submission are available at:

    Expiration Date: Wed, 2018-01-31Links: Instructions for ProposalRelated documents:  PowellCenterCallForProposalsFY2019.pdf

    Species shrinkage in America’s national suburban ecosystem

    Thu, 10/12/2017 - 18:19

    Image Credit: Flickr/Shane Adams

    Although the modern “American Dream” is no longer defined by white picket fences, this perception of the “ideal” homestead still holds some influence on cultural norms: cookie-cutter houses lining a cul-de-sac, each with a pristinely manicured green lawn. A collaborative study of residential lawns across seven LTER sites found that the quest for this suburban ideal still pervades residential development and management throughout America. So much so, in fact, that the composition of plant communities in residential lawns across the different regional sites had more in common with each other than they did with their local, unmanaged counterparts.

    The seven cities chosen for the study were selected in order to represent the dramatically different climates and vegetation types across America, making the similarities in residential lawn communities even more striking. Turfgrasses comprised the majority of residential lawn samples, and although individual species differed between regional sites, they shared similar community composition.

    The study also found that different regional sites shared the same weed species, indicating that other factors outside of similar human planting practices are contributing to the narrowing of lawn plant diversity across America. Researchers suggested that the weeds are often present in turfgrass seed sources, and that lawn maintenance and disturbed soils create a distinct environment in which these specific species are successful.

    Demographic components of these residential areas were also incorporated into the study. Researchers found that higher income households kept lawns with significantly less plant diversity than those of lower income households. This is likely due to the fact that high income households can afford to spend more on lawn care services that can remove any unwanted newcomers to the lawn. Conversely, the same high income households often kept gardens that yielded very high plant diversity - though these flora were often nonnative, and accounted for a much smaller area of coverage than the turfgrass lawns.

    This study demonstrates that these lawn species largely belong to a continental-scale lawn community that is severely lacking in diversity and was shaped by both climatic factors and lawn management.

    Audience: ResearchersStudents

    Open Rank Tenure / Tenure-Track Faculty in Surface Process GeoSciences

    Thu, 10/12/2017 - 17:08
    Opportunity Type: Jobs

    The University of Virginia Arts & Sciences Department of Environmental Sciences invites applicants for two tenure-track Assistant or tenured Associate/Full Professor positions in the geosciences, focusing on earth surface processes. We wish to hire outstanding scientists who will thrive in an interdisciplinary department with hydrologists, atmospheric scientists, ecologists and geoscientists, and are passionate about research and teaching.

    Surface processes in the geosciences covers a broad area of subspecialties and environments, and may include physical, chemical, biological, and human-caused phenomena. Examples of research areas that would strengthen and enhance our existing program include, but are not limited to, fluvial geomorphology, slope and upland processes, critical zone processes, coastal systems, depositional systems (deltas, lakes, swamps), desert/arctic/alpine environments, and geohistory.

    In addition to developing external funding to support research endeavors, candidates will be expected to teach at the graduate and undergraduate levels, including the teaching of our undergraduate core course for majors (EVSC 2800, Fundamentals of Geology), and provide service to the University, Department and professional organizations.

    Review of applications will begin December 1, 2017; however the position will remain open until filled. The appointments begin with the fall term of 2018, with an anticipated start date of July 25, 2018.  Applicants must be on track to receive a Ph.D. in the relevant field by May 2018 and must hold a PhD at the time of appointment.

    Apply: To apply candidates must submit a Candidate Profile through Jobs@UVa (, search on posting number 0621672 and electronically attach the following: a cover letter of interest describing research agenda and teaching experience, a curriculum vitae and contact information for three references.    

    Questions regarding the application process in JOBS@UVa should be directed to: Rachel Short,

    Expiration Date: Fri, 2017-12-01

    LTAR Assistant Data Manager

    Thu, 10/12/2017 - 17:02
    Opportunity Type: Jobs

    The Archbold-UF LTAR is in search of a dedicated Assistant Data Manager to assist with organization and dissemination of data associated with their sites. Our ideal candidate is someone who loves databases and coding but has a background in (or interest in) agroecology and sustainable food production and understands its importance to society. We are looking for someone who doesn’t mind being on a computer all day working through data issues, and problem solving our data management needs. We need someone who is creative and driven, and will take initiative to help Archbold and LTAR best manage our data. This person will be happy to assist staff at both sites with their data documentation and organization. 


    • Day to day responsibilities include data management coordination for two of the Archbold-UF LTAR sites, MAERC and RCREC (; This will include some travel between the two sites, which are approximately 60 miles apart.
    • Participate in LTAR network Data Management working group meetings and conference calls
    • Work alongside the Data Services team to assist researchers with data management tasks
    • Ability to clearly communicate with project investigators on all data management related issues
    • Monitoring and trouble-shooting of data flow from streaming sensors to relational databases, and automated subset data transfers to offsite end users
    • Microsoft Access database creation and maintenance, including form design, to support ongoing research projects at both sites
    • Datasets vary by project and include hydrology, climate, biodiversity, land management, livestock tracking, among others
    • Provide support for all data management tasks
    • Occasional field support for field technicians
    • Assist GIS and Data Manager with other data management related tasks as needed.


    • Degree in Biology, Environmental Science, Computer Science, Agricultural Sciences or Engineering or related field, with relevant coursework/equivalent work experience using relational databases preferred
    • Experience with Microsoft Access, Word and Excel is required
    • Experience with R, Microsoft SQL Server, VBA coding, MS Access form design and macro creation preferred
    • Ability to troubleshoot network data flow connections, database errors, VBA code
    • Ability to work with diverse datasets to accommodate ongoing projects
    • Ability to work with research staff, outside agencies and other stakeholders such as cattle ranchers
    • Strong organizational skills, detail oriented, and ability to work independently and prioritize tasks
    • Good verbal and written communication/documentation skills

    This is a one year full-time position that offers health and dental benefits, retirement plan with matching employer contributions after one year, paid vacation and sick leave, and 10 paid holidays per year. The position may be extended each year with the possibility of future funding. To apply, please submit a cover letter, resume, and three professional references, to Applicants must have U.S. citizenship or current authorization to work in the U.S. Reviewing of applicants will begin November 6th and continue until position is filled. EOE/AA Employer

    Expiration Date: Tue, 2018-11-06Related documents:  LTAR_AssistantDataManger_JobPosting_100917.pdf

    Postdoctoral Scientist - Molecular Microbial Ecology

    Thu, 10/12/2017 - 16:53
    Opportunity Type: Jobs

    The Marine Biological Laboratory (MBL) is dedicated to scientific discovery – exploring fundamental biology, understanding biodiversity and the environment, and informing the human condition through research and education. Founded in Woods Hole, Massachusetts in 1888, the MBL is a private, nonprofit institution and an affiliate of the University of Chicago.

    Summary - A postdoctoral position in molecular microbial ecology is available at the Marine Biological Laboratory, Woods Hole. This NSF-funded collaborative project with the Woods Hole Oceanographic Institution seeks to identify the nature of microbial predator-prey interactions using laboratory chemostats combined with RNA stable isotope probing, sequencing, and trait-based modeling. We are seeking an individual with expertise in molecular microbial ecology, including those with interests in microbial, viral, and eukaryotic dynamics, microbial food webs, and theoretical ecology. While the primary focus of the work will be in research, the postdoctoral investigator will have an opportunity to participate in educational and outreach activities associated with the project.

    Qualifications - The successful applicant must hold a Ph.D. in microbiology, marine science, systems biology, or a related field. Expected skills include molecular biology and microscopy with bioinformatics proficiency; chemostat operation and nutrient analyses are considered advantageous, but not necessary.

    Application Instructions - Please submit the following three items with your application: 

    • A cover letter describing your research goals and your specific motivation to join our project
    • Curriculum vitae 
    • Contact information for three references, including your Ph.D. supervisor. (We will contact your references when needed).

    Apply here. Please email Joe Vallino ( or Julie Huber ( with any questions about the position.

    Expiration Date: Wed, 2018-01-10

    In memory of Henry Gholz

    Tue, 10/10/2017 - 12:23

    Henry L. Gholz, of Fort Collins, CO, died rock climbing in Colorado on September 30, 2017.

    Henry Gholz’s passing is a tragic loss for ecology. Henry was a prominent ecosystem scientist who also had a stellar career in research administration and leadership. As a National Science Foundation (NSF) Program Director in Ecosystems Studies, he helped to shape ecological science in lasting ways. His visionary and outstanding guidance of interdisciplinary teams in NSF’s Long Term Ecological Research (LTER) program became an international model for ecological research. His oversight of NCEAS, the National Center for Ecological Analysis and Synthesis, allowed ecological research to flourish in new ways, helping to make NCEAS an exemplar for ecological synthesis all over the world.

    Henry was a big picture thinker, championing research on scaling—comparing and contrasting ecosystem processes across multiple temporal and spatial scales—and loved to promote analyses of large complex data sets to reveal responses to climate change and other large-scale disturbances. This led more recently to his championing NSF’s Macrosystems Biology program that addresses how Earth’s biosphere responds to natural and human-caused change across time and space in ways that have not been explored before. Henry retired from NSF in 2016, and at the time of his death was working with NEON, the National Ecological Observatory Network, to forge a plan for stronger community engagement to help NEON reach its full scientific potential.

    Henry was generous in all he did. This was especially apparent in his promotion of science. He was generous with his ideas and his time, especially with young investigators and students looking to forge a career in ecosystem science. He considered his support of SEEDS, the Ecological Society of America’s flagship program to involve underrepresented students in ecology, a crowning achievement. Through Henry, SEEDS developed deep-rooted connections with the LTER program and biological field stations throughout North America, providing internships and field trip opportunities that inspired cohorts of budding ecologists.

    Prior to his tenure at NSF, Henry was Professor of Forest Resources and Conservation at the University of Florida. With graduate students and colleagues he made significant contributions to our understanding of carbon, energy, water, and nutrient cycling in both managed and natural forests, particularly those of the southeastern U.S. and the American tropics. He lent his time to many committees and boards, and worked to advance science at USAID as an AAAS fellow, at USDA as a program manager, as a Science Adviser to the Powell Center, and as a longstanding member of the National Research Council Board on Agriculture and Natural Resources. Henry received his Ph.D. in Forest Science from Oregon State University where he was awarded the Outstanding Alumnus Award this year.  His deep ecological insights will continue through his colleagues and those that he inspired along the way.

    Henry was a good friend to so many people. Outside his professional life, his fondness for the outdoors and rock n’ roll were well known. Henry’s and his wife Jan Engert’s home was often thrown open for parties, celebrations, and family plus friend gatherings. His quick smile, warm greetings, easy laugh, and upbeat conversations over beers will be sorely missed by all of us so-privileged.


    Donations can be made in Henry’s name to:

     An ESA SEEDS program in his honor:
    or the American Alpine Club (


    Cards and notes can be sent to:

    The Henry Gholz Family or to his wife, Jan Engert.
    3509 Shore Road
    Fort Collins, CO 80524


    A Celebration Service will be held in Fort Collins

    Tuesday October 10
    1:30 pm Service,  Plymouth United Church of Christ,
    916 W Prospect Road,
    Fort Collins, CO

    3-6pm -  O’Dell’s Brewery - Henry’s party

    An East Coast service will be held in Gainesville, FL, organized by Rita Teutonico,  Local questions can be directed to Tim Martin,

    Saturday, October 21st
    1:00pm, Austin Cary Forest Learning Center

    10625 NE Waldo Rd
    Gainesville, FL 32609


    Pre-AGU Workshop on Distributed Temperature Sensing

    Wed, 10/04/2017 - 18:25

    Don’t miss: 

    The NSF Centers for Transformative Environmental Monitoring Programs (CTEMPs) distributed temperature sensing workshop, 

    The Cutting Edge of Fiber Optics: Temperature and Acoustic Applications in Earth Science
     Principles, Operation, Data Analysis and Demonstrations

    When: December 9-10, 2017 – just before the AGU meeting

    Where: Stennis Space Center, Mississippi – short drive from New Orleans

    Instructors: John Selker (Oregon State University) and Scott Tyler (University of Nevada, Reno)


    • $150/day professionals, $75/day students, or
    • $200 professionals, $150 students for both days.

    We are expanding the scope of this annual workshop to include both distributed temperature sensing (DTS) and distributed acoustic sensing (DAS). The workshop will accommodate a wide range of practitioners, from those interested in an introduction to the methods, to those wanting to learn state of the art data processing to getting the greatest possible precision from your data.

    Examples will be taken from the Ross Ice Shelf, the Dead Sea, atmospheric turbulence in Colorado, deep rock installations in Nevada, active and passive seismic monitoring and acoustic monitoring in pipes. All participants will have the opportunity to work directly with a wide range of DTS and DAS instruments, instrument manufacturers and cables designed specifically for environmental sensing. DTS and DAS manufacturers, fiber optic cable manufacturers, and CTEMPs staff will lecture and be available for consultation on special issues.

    Please feel free to bring data sets.

    Details and registration

    Audience: Researchers

    Investigating Whose Grass is Greener in Phoenix, AZ

    Wed, 09/27/2017 - 14:21

    Image Credit: Flickr/Steve P2008

    Phoenix, Arizona has an oasis culture although it receives little water and has a semi-arid climate. In desert cities like Phoenix, irrigating residential grass lawns uses a lot of the scarce water supply and water conservation advocates push for residents to replace their traditional lawns with drought resistant land cover, such as gravel or succulents. In a recent analysis of survey data,Central Arizona-Phoenix LTER researchers found that both social norms and legacy effects—or residual effects from past decisions and trends—influence lawn preferences in Phoenix.

    Legacy effects of the mid-1900s transition from grass to drought-tolerant yards affect the Phoenix landscape of today. Neighborhoods that were developed before this transition have mostly kept their grass yards, showing that changes in preferences and practices take time.

    Social norms also affect residential landscaping in Phoenix. Unlike trends in the late-1800s and mid-1900s, present-day newcomers have more drought-conscious lawns than long-time residents. One reason for this could be the length of time residents are exposed to the Phoenix Oasis image. In other words, the longer residents are acquainted with the Phoenix culture of grassy lawns, the more likely they are to prefer at least a partially-grassy lawn.

    Overall, this study shows that Phoenix landscaping preferences have changed over time, and are tied to both historical and societal characteristics of the region. The authors suggest that conservation advocates and urban planners should account for these factors in efforts to promote more drought-tolerant residential landscaping

    Audience: ResearchersStudents

    Recovering New England Forests Mitigate Climate Change

    Wed, 09/27/2017 - 14:12

    Original article in Landscape Ecology

    In nineteenth century New England, most of what is now forest was covered by farmland. To assess how climate change is affecting forest regrowth (and vice versa) researchers at the Harvard Forest LTER simulated forest recovery processes with and without climate change.

    Under the climate change simulation, tree growth and biomass increased but forest community composition showed little change. This result contrasts with the outcome of climate niche models—which typically show species ranges shifting northward. Why the difference? Climate niche models simulate future suitable habitat based on the climatic conditions where species currently live. However, they do not assume species will continue to grow or simulate the actual process of the species moving. The mechanistic model used in this study incorporates tree dispersal, growth, and succession, accounting for the slow turnover of forests.

    These findings are significant since most management decisions have been based on niche models rather than mechanistic models. Moving forward, managers should consider the strengths and limitations of both models to make the best science-informed decisions.

    The team performed two different simulations from 2010 to 2110: one with current climate conditions and one with climate change projections. In the climate change scenario, forest growth increased due to a longer growing season. Forests were able to take advantage of these favorable growing conditions because they are still well below their maximum biomass capacity due to the previous disturbances. This increased productivity increases the amount of carbon that can be taken out of the atmosphere and stored in wood and soils, a climate mitigating effect.

    This model comparison shows that the major changes to community composition will likely be due to the continued recovery of New England forests, with increases in shade-tolerant species. Not only will these recovery dynamics have a greater impact than climate change on forest composition, they will also play a climate mitigation role in the decades to come.

    Audience: ResearchersStudents

    Controls on Freshwater Supplies in Drying Caribbean Watersheds

    Wed, 09/27/2017 - 14:04

    Image Credit: Pixabay/Jan Bartel

    Puerto Rico’s government is tackling their decade-long economic crisis by clearing 582,000 acres of tropical montane forest to expand the island’s agricultural sector. But forests play a major role in regulating water cycles—a critical ecosystem service for a region experiencing extended drought. A study by Luquillo Long-Term Ecological Research Program (LUQ-LTER) researchers found that such extensive land clearing would likely increase freshwater supply, but also increase flooding risk.

    Using the Soil Water Assessment Tool (SWAT), the researchers simulated monthly and annual average stream water discharge in eight tropical montane watersheds in Puerto Rico, based on dominant land cover types from 1977, 1991, and 2000. From 1977 to 1991, abandoned agriculture and pasture land in the central mountains of Puerto Rico was largely reforested. After 1991, reforestation efforts slowed and forest reclamation declined slightly until 2000. The researchers expected these changes in land cover and configuration would impact stream discharge and freshwater supply from tropical montane watersheds, offering a good opportunity to test and calibrate the simulation.

    The researchers found that landscape composition and configuration explained 64% of the changes in Puerto Rico’s freshwater supply. During periods of reforestation, increased forest cover significantly reduced the average stream discharge and freshwater supply as deep roots intercepted ground flow and forest transpiration drove losses to the atmosphere. Reforestation also reduced large-scale water discharge, flooding, and landslide risk following large rain events. When reforestation efforts declined, there was a significant increase in the average stream discharge in the tropical watersheds.

    Deforestation tended to increase hydrological connectivity in the watersheds. Land fragmentation, in contrast, decreased average water discharge because of an enhanced edge effect, which exposed more forest edges to solar radiation, increased evapotranspiration, and increased interception of lateral surface and subsurface water flows.

    As Puerto Rico experiences more deforestation and land fragmentation, combined with increased climate drying in the Caribbean, these conditions could lead to insufficient water supplies on an already impoverished and economically strained region. The findings of this study help scientists, land use planners, and decision makers understand the impacts of land modification on the hydrological services of tropical ecosystems.

    Original article in PLOS ONE

    Audience: ResearchersStudents

    Beating Back Invasive Seaweed

    Wed, 09/27/2017 - 13:53

    Image Credit: Scripps

    Invasive seaweed is disturbing native ecosystems in the rocky reef off of the Southern California coast. The seaweed species, Sargassum horneri, has spread aggressively from Santa Barbara to Isla Navidad, inhibiting native algae growth and altering marine ecosystems. Santa Barbara Coastal LTER researchers compared approaches for clearing the invasive from California’s coastal ecosystems, to determine the most effective and efficient methods.

    From field experiments conducted off of Santa Catalina Island, California, the researchers determined that plants with severed leaves are unable to regenerate and will eventually die. This shows that slashing seaweed leaves, instead of removing whole plants, may be effective in killing plants and stopping propagation. Researchers also found that the most effective places to remove the seaweed are those that haven’t been completely overtaken by the invasive yet.

    In addition to general best practices, divers determined the most efficient seaweed removal methods when different resources are available. They found that using an underwater suction device had the highest efficiency of seaweed removal, but only allowed two divers to work at a time and had significant startup costs and logistical challenges associated with the suction equipment. This shows that groups that have limited volunteers, but ample funds, should use the suction method.

    The second method tested in this study was the “line and bag method,” in which divers filled mesh bags with detached seaweed. This method was less efficient than the suction method, but was less expensive, required little training, and allowed for more than two divers to work at a time. From these results, researchers concluded that groups with many volunteer divers but limited funds should use the line and bag method.

    These findings will directly help groups find effective strategies to control the spread of invasive seaweed and contribute to the health of coastal California ecosystems.

    Original article in Management of Biological Invasions

    Audience: ResearchersStudents