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Joseph Holomuzki

Interdiciplinary Supervisory Biologist

Contact Info

Short Biography

Dr. Joseph Holomuzki is the Western Branch Chief of the National Research Program for Water Resources in the U.S. Geological Survey in Menlo Park, CA. The Branch has ~65 highly-skilled  scientists studying topics such as surface-water hydrology and chemistry, ground-water hydrology and chemistry, erosional processes and sediment transport, and biological and microbiological processes that affect water quality and ecosystem health. His research focuses on community dynamics in riverine and wetland ecosystems in New Zealand and the United States (mainly the Laurentian Great Lakes region and northern California). In New Zealand, he studies how flooding and species interactions (typically predation by fishes and competition for benthic algae) regulate populations of freshwater macroinvertebrates. His research in Ohio centers on how invasive plants alter food web structure and ecosystem function in Lake Erie coastal wetlands. He has worked closely with the Ohio Department of Natural Resources to provide baseline data on practical economic strategies to limit expansion of Phragmites australis (common reed) and to restore biodiversity in reed-dominated wetlands. His interests also cover how food webs are structured in rivers under Mediterranean climates in California. Dr. Holomuzki has published nearly 60 peer-reviewed research papers and book chapters, served on review panels or reviewed proposals for the National Science Foundation and Sea Grant, reviewed manuscripts for 26 different journals, and served on the editorial board for Copeia (1994–1998) and for the Journal of the North American Benthological Society (J-NABS; now titled Freshwater Science) (2001–2004). His professional-society service has centered mainly on operations of the Society for Freshwater Science (SFS) (formerly known as the North American Benthological Society [NABS]), where he served as President from 2011 to 2012. Prior to coming to the USGS, he was in academia, where he was honored with several teaching awards, including the Ohio State University Alumni Award for Distinguished Teaching in 2011.



Recent  Publications



Power, M.E., J.R. Holomuzki, and R.L. Lowe. In Press. Food webs in Mediterranean rivers. Hydrobiologia.

Back, C.L., Holomuzki, J.R., D.M. Klarer, and R.S.Whyte. 2012. Herbiciding invasive reed: indirect effects on habitat conditions and snail–algal assemblages one year post-application. Wetlands Ecology & Management 20:419-431.

Holomuzki, J.R. and B.J.F. Biggs. 2012. Same enemy, same response: predator avoidance by an invasive and native snail. New Zealand Journal of Natural Sciences 37:10-23.

Holomuzki, J.R. and D.M. Klarer. 2010. Invasive reed effects on community structure of benthic macroinvertebrates and epiphyton in Lake Erie coastal marshes. Wetlands Ecology & Management DOI 10.1007/s11273-009-9161-7; Vol. 18:219-231.

Holomuzki, J.R., J.W. Feminella, and M.E. Power. 2010. Biotic Interactions in Freshwater Benthic Habitats. Journal of the North American Benthological Society 29: 220-244

Holomuzki, J.R. 2010. Within-reach spatial variability of snails and molluscivory by juvenile brown trout. New Zealand Journal of Marine & Freshwater Research 44:187-195. 

Holomuzki, J.R., R.L. Lowe, and B.J.F. Biggs. 2009. Spatiotemporal separation of New Zealand mudsnails from predatory fish. Journal of the North American Benthological Society 28:846-854.

Whyte, R. S., J.R. Holomuzki, and D.M. Klarer. 2009. Wetland plant and macroinvertebrate recovery in Phragmites australis-dominated stands after herbicide (HabitatÒ) treatment. Verhandlungen der Internationalen Vereinigung für theoretische und angewandte Limnologie.Vol. 30:725-730.

Back, C.L. and J.R. Holomuzki. 2009. Long-term spread and control of invasive, common reed (Phragmites australis) in Sheldon Marsh, Lake Erie. The Ohio Journal of Science 108:108-112.

Kulesza, A.E., J.R.Holomuzki, and D.M. Klarer. 2008. Benthic community structure in stands of Typha angustifolia and herbicide-treated and herbicide-free Phragmites australis. Wetlands 28:40-56.

Clark, J.M., M.W. Kershner, and J.R. Holomuzki. 2008. Grain size and sorting effects on size-dependent high-flow responses by lotic crayfish. Hydrobiologia 610:55-66.

Holomuzki, J.R. and B.J.F. Biggs. 2007. Physical microhabitat effects on 3-dimensional spatial variability of the hydrobiid snail, Potamopyrgus antipodarum. New Zealand Journal of Marine and Freshwater Research 41:357-367

Holomuzki, J.R., and B.J.F. Biggs. 2006. Food limitation affects algivory and grazer performance for New Zealand stream macroinvertebrates. Hydrobiologia 561:83-94.

Holomuzki, J.R., R.L. Lowe, & J.A. Ress. 2006  Trait-mediated grazing effects by macroinvertebrates on stream microalgae. New Zealand Journal of Marine & Freshwater Research 40:357-367.

Holomuzki, J.R., and B.J.F. Biggs. 2006. Habitat-specific variation and performance trade-offs in shell armature of New Zealand mudsnails. Ecology 87: 1038-1047.

Kulesza, A.E., and J.R. Holomuzki. 2006. Amphipod performance responses to decomposing litter of Phragmites australis and Typha angustifolia in a Lake Erie coastal marsh. Wetlands 26:1079-1088.



Research Focus

Aquatic Invasive Species Ecology, Biotic Interactions, Wetland Ecology & Management

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Contact Information

Joseph Holomuzki
345 Middlefield Road
Menlo Park, CA 94025
650-329-4463 - Fax
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