John Maerz, Professor of Vertebrate Ecology

John Maerz

Research Emphasis:

I am broadly interested in animal ecology, evolution and conservation management.

CWT Committees:

CWT Science Advisory Committee

Contact Information:

Primary Organization:  University of Georgia

Mailing Address:

John Maerz
Office 3-323
180 E. Green Street
Athens, GA 30602

Office Phone:  706-542-2686


Web Page:

CWT Data Sets:

3089 (Plethodon study from removal plots located at the Coweeta Hydrologic Laboratory, Otto, NC.)

4065 (Patch occupancy sampling of invertebrates and salamanders from Coweeta Synoptic sampling sites located in the Upper Little Tennessee River Basin, 2009 to 2012.)

3091 (Stream salamander mark-recapture abundance study at the Coweeta Hydrologic Laboratory, Otto, NC.)

3090 (Riparian disturbance restricts connectivity of Appalachian stream salamander populations at the Coweeta Hydrologic Laboratory, Otto, NC)

3086 (Plethodon hybrid zone capture-mark-recapture survey plots at the Coweeta Hyrdologic Laboratory, Otto, NC.)

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CWT Publications and Presentations: (custom bibliography)

Journal Articles

Demi, LM, Benstead, JP, Rosemond, AD, Maerz, JC. Experimental N and P additions alter stream macroinvertebrate community composition via taxon-level responses to shifts in detrital resource stoichiometry. Funct Ecol. 2019; 00: 1– 13.

Cecala, K. K., J. C. Maerz, B. J. Halstead, J. R. Frisch, T. L. Gragson, J. Hepinstall-Cymerman, D. S. Leigh, C. R. Jackson, J. T. Peterson, and C. M. Pringle. 2018. Multiple drivers, scales, and interactions influence southern Appalachian stream salamander occupancy. Ecosphere 9(3):e02150. 10.1002/ecs2.2150

Demi, L.M., J.P. Benstead, A.D. Rosemond, and J.C. Maerz. 2018. Litter P content drives consumer production in detritus-based streams spanning an experimental N:P gradient. Ecology. 99:347-359. 10.1002/ecy.2118

Bumpers PM, Rosemond AD, Maerz JC, Benstead JP. 2017. Experimental nutrient enrichment of forest streams increases energy flow to predators along greener food-web pathways. Freshw Biol. 2017;62:1794–1805.

Frisch, John R., Peterson, James T., Cecala, Kristen K., Maerz, John C., Jackson, C. Rhett, Gragson, Ted L., and Pringle, Catherine M. 2016. Patch occupancy of stream fauna across a land cover gradient in the southern Appalachians, USA. Hydrobiologia. 773:163-175. doi:10.1007/s10750-016-2695-9.

Manning, D.W.P, A.D. Rosemond, J.P. Benstead, J.S. Kominoski, V. Gulis, and J.C. Maerz (2016), Convergence of detrital stoichiometry predicts thresholds of nutrient-stimulated breakdown in streams. Ecological Applications. 26(6):1745-1757. DOI:10.1890/15-1217.1.

Cecala, K.K. and Maerz, J.C. 2015. Context-dependent responses to light contribute to salamander responses to landscape disturbances. Canadian Journal of Zoology 94:7-13. 10.1139/cjz-2015-0111

John S. Kominoski, Amy D. Rosemond, Jonathan P. Benstead, Vladislav Gulis, John C. Maerz, and David W. P. Manning 2015. Low-to-moderate nitrogen and phosphorus concentrations accelerate microbially driven litter breakdown rates. Ecological Applications 25:856-865.

Manning, David W. P., Amy D.Rosemond, John S. Kominoski, Vladislav Gulis, Jonathan P. Benstead and John C. Maerz, 2015, Detrital stoichiometry as a critical nexus for the effects of streamwater nutrients on leaf litter breakdown rates, Ecology, 86, 8, pp 2214-2224, doi: 10.1890/14-1582.1

Milanovich, J.R., Maerz, J.C. and Rosemond, A.D. 2015. Stoichiometry and estimates of nutrient standing stocks of larval salamanders in Appalachian headwater streams. Freshwater Biology. (DOI: 10.1111/fwb.12572)

Phillip M. Bumpers, John C. Maerz, Amy D. Rosemond, and Jonathan P. Benstead 2015. Salamander growth rates increase along an experimental stream phosphorus gradient. Ecology 96:2994-3004.

Wyderko, Jennie A., Benfield, Ernest F., Maerz, John C., Cecala, Kristen K., Belden, Lisa K. (2015) Variable infection of stream salamanders in the southern Appalachians by the trematode Metagonimoides oregonensis (family: Heterophyidae). Parasitol Research, 114:3159-3165. DOI 10.1007/s00436-015-4550-8

Cecala, K. K., Lowe, W. H. and Maerz, J. C. (2014), Riparian disturbance restricts in-stream movement of salamanders. Freshwater Biology, 59: 2354-2364. doi: 10.1111/fwb.12439

Milanovich, Joseph R., and John C. Maerz. Realistic Fasting Does Not Affect Stable Isotope Levels of a Metabolically Efficient Salamander. Journal of Herpetology 47.4 (2013): 544-548.

Bradford, M.A., Strickland, M.S., Devore, J.L., Maerz, J.C. (2012) Root carbon flow from an invasive plant to belowground foodwebs. Plant and Soil. DOI: 10.1007/s11104-012-1210-y

Strickland, M.S., Devore, J.L., Maerz, J.C., Bradford, M.A. (2011) Loss of faster-cycling soil carbon pools following grass invasion across multiple forest sites. Soil Biology & Biochemistry, 43, 452-454.

F. Thigpen, T & J. Humphries, W & Maerz, John. (2010). Effectiveness of using artificial shelters to sample arboreal green salamander populations in the Blue Ridge Mountains of Georgia and North Carolina. Herpetological Review. 41. 159-162.

Milanovich, J. R, W. E. Peterman, N. P. Nibbelink, and J. C. Maerz. 2010. Projected loss of a salamander diversity hotspot as a consequence of projected global climate change. PLoS One, 5 (8): 1-10.

Strickland, M. S., J. L. Devore, J. C. Maerz, M. A. Bradford. 2010. Grass invasion of a hardwood forest is associated with declines in belowground carbon pools. Global Change Biology, 16: 1338-1350

Bradford, M.A., DeVore, J.L., Maerz, J.C., McHugh, J.V., Smith, C.L., Strickland, M.S. 2009. Native, insect herbivore communities derive a significant proportion of their carbon from a widespread invader of forest understories. Biol Invasions.

Camp, C., Peterman, W., Milanovich, J., Lamb, T., Maerz, J., Wake, D. 2009. A new genus and species of lungless salamander (family Plethodontidae) from the Appalachian highlands of the south-eastern United States. Journal of Zoology, 279(1): 86-94

Carter, T., C.R. Jackson, A. Rosemond, C. Pringle, D. Radcliffe, W. Tollner, J. Maerz, D. Leigh. A. Trice. 2009. Beyond the urban gradient: barriers and opportunities for timely studies of urbanization effects on aquatic ecosystems. Journal of the North American Benthological Society, 28(4):1038-1050

Books and Book Sections

Webster, J.R., Benfield, E.F., Cecala, K.K., Chamblee, J.F., Dehring, C.A., Gragson, T.L., Cymerman, J.H., Jackson, C.R., Knoepp, J.D., Leigh, D.S., Maerz, J.C., Pringle, C., Valett, H.M., 2012. Water Quality and Exurbanization in Southern Appalachian Streams. In River Conservation and Management (Chapter on Catchment Conservation, Ecosystem Integrity and Threats to River Systems). P.J. Boon and P.J. Raven, eds. Published 2012 by John Wiley & Sons, Ltd., p. 91-107

Conference Posters and Presentations

Cymerman, J. H., Maerz, J., & Abernathy, H. (2018). Incorporating climate variables improves distribution models for trailing edge populations. In Association of Field Ornithologists and Wilson Ornithological Society Joint Meeting. Chattanooga, Tennessee.

Chandler, R., Merker, S., Chitwood, R., Cymerman, J., Nairn, C., & Cooper, R. (2018). Diversity and conservation status of trailing-edge populations in the southern Appalachian Mountains. In Joint meeting of the Association of Field Ornithologists and the Wilson Ornithological Society.

Jackson, C.R., J.R. Webster, K.K. Cecala, J.R. Frisch, J.E. Kirsch, J.C. Maerz, D.S. Leigh, J.T. Peterson, C.M. Pringle, and J.D. Knoepp. 2018. Hydrologic, Morphologic, and Water Quality Effects of Rural Development in Streams of the Southern Blue Ridge Mountains. Society for Freshwater Science Annual Meeting, May 20-24, Detroit, MI.

Maerz, J.C., Howard, J.S., McEntire, K.D. Integrating Spatial and Temporal Studies to Model Salamander Demographic Responses to Climate. 2018. LTER Network All Sciences Meeting, Asilomar, Monterey, CA.

Bumpers, P.M., A.D. Rosemond, J.P Benstead, L. Demi, J.S. Kominoski, J.C. Maerz, D.W.P. Manning. 2017. A little bit of algae goes a long way: Nutrient enrichment stimulates algal growth in heavily shaded streams. 63rd Annual Society for Freshwater Science Annual meeting, Raleigh, NC, USA.

Rosemond, A.D., J.P. Benstead, J.C. Maerz, V. Gulis, P.M. Bumpers, D.W.P. Manning, J.S. Kominoski, L. Demi. 2017. Nitrogen and phosphorus have different effects at the top and bottom of stream food webs. 63rd Annual Society for Freshwater Science Annual meeting, Raleigh, NC, USA.