J. Ryan Bellmore
Research Fish Biologist
Pacific Northwest Research Station
Juneau Forestry Sciences Lab
Contact via email
Phone: (907) 586-7805
Fax: (907) 586-7848
Curriculum Vitae (190 KB)
Statement of Research:
My research focuses on the ecology of streams, rivers, and lakes. These freshwater ecosystems are some of the most
imperiled environments on Earth, and as a result, are frequent targets for restoration. Much of my research is aimed at
evaluating: (1) the effects of human degradation and environmental change on freshwater ecosystems, and (2) the potential
consequences of different management strategies designed to mitigate or reverse the undesirable effects associated with system
change. The overall objective of my research is to gain a better understanding of complex mechanisms that support the resilience
and productivity of these important ecosystems, and in so doing, contributing to better-informed restoration, conservation, and
stewardship of freshwater resources. I am particularly interested in food webs, which describe the flows of energy and material
that support organisms, populations, communities, and ultimately, the natural resources and ecosystem services that freshwaters
provide. My current research involves combining tools and theory from food-web ecology, ecosystem ecology, and system dynamics
modeling to understand the flows of energy that support populations of Pacific Northwest salmon and steelhead during their
Projects & Activities:
Decision Support Modeling for River Restoration and Salmon Recovery
Partners: USGS Forest and Rangeland Ecosystem Science Center, Bureau of Reclamation, NOAA Northwest Fisheries Science Center, Methow Salmon Recovery Foundation
Quantifying Energy Flow through Salmon Food Webs
Partners: USGS Forest and Rangeland Ecosystem Science Center, Washington State University, Idaho State University, University of Idaho
Reviewing the Physical and Ecological Responses to Dam Removal
Partners: USGS Powell Center for Analysis and Synthesis, NOAA Fisheries, US Geological Survey, Bureau of Reclamation, University of Montana, Dartmouth College, Oregon State University
Note: Most PDF files linked in the publications section of this page were not created by the USDA Forest Service, and may not be accessible to screen-reader software. Many publications are open access, and links to the html versions on the journal websites are also provided, where applicable.
Bellmore, J.R., J.R. Benjamin, M. Newsom, J.A. Bountry, and D. Dombrowski. 2017. Incorporating food web dynamics into ecological restoration: a modeling approach for river ecosystems. Ecological Applications 27(3) 814-832. Link to https://doi.org/10.1002/eap.1486.
Roon, D., J. Dunham, B. Harvey, R. Bellmore, D. Olson, and G. Reeves. 2017. Evaluating the ecological trade-offs of riparian thinning for headwater stream ecosystems in second-growth redwood forests. In: R.B. Standiford and Y. Valachovic. Coast redwood science symposium--2016: Past successes and future direction. General Technical Report PSW-GTR-258. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 199-201.
Foley, M.M., J.R. Bellmore, J.E. O'Connor, J.J. Duda, A.E. East, G.E. Grant, C.W. Anderson, J.A. Bountry, M.J. Collins, P.J. Connolly, L.S. Craig, J.E. Evans, S.L. Greene, F.J. Magilligan, C.S. Magirl, J.J. Major, G.R. Pess, T.J. Randle, P.B. Shafroth, C.E. Torgersen, D. Tullos, and A.C. Wilcox. 2017. Dam removal: Listening in. Water Resources Research 57(7): 5229-5246. Link to DOI: https://doi.org/10.1002/2017WR020457.
Sergeant, C.J., R.J. Bellmore, C. McConnell, and J.W. Moore. 2017. High salmon density and low discharge create periodic hypoxia in coastal rivers. Ecosphere 8(6): e01846. Link to DOI: 10.1002/ecs2.1846
Bellmore, J.R., J.J. Duda, L.S. Craig, S.L. Greene, C.E. Torgersen, M.J. Collins, and K. Vittum. 2016. Status and trends of dam removal research in the United States. Wiley Interdisciplinary Reviews: Water (WIRES: Water): 4(2): e1164. Link to DOI: https://doi.org/10.1002/wat2.1164
Benjamin, J.R., J.R. Bellmore, and G.A. Watson. 2016. Response of ecosystem metabolism to low densities of spawning Chinook Salmon. Freshwater Science Link to doi:10.1086/686686
Tullos, D.D., M.J. Collins, J.R. Bellmore, J.A. Bountry, P.J. Connolly, P.B. Shafroth, and A.C. Wilcox. 2016. Synthesis of common management concerns associated with dam removal. JAWRA Journal of the American Water Resources Association 52(5): 1179-1206. Link to DOI: https://doi.org/10.1111/1752-1688.12450
Bellmore, J.R., C.V. Baxter, and P.J. Connolly. 2015. Spatial complexity reduces interaction strengths in the meta-food web of a river floodplain mosaic. Ecology 96(1): 274-283. Link to doi:10.1890/14-0733.1
Bellmore, J.R., and C.V. Baxter. 2014. Effects of geomorphic process domains on river ecosystems: a comparison of floodplain and confined valley segments. River Research and Applications 30: 617-630. Link to doi:10.1002/rra.2672
Bellmore, J.R., A.K. Fremier, F. Mejia, and M. Newsom. 2014. The response of stream periphyton to Pacific salmon: Using a model to understand the role of environmental context.. Freshwater Ecology 59: 1437-1451. Link to doi:10.1111/fwb.12356
Bellmore, J.R., C.V. Baxter, K. Martens, and P.J. Connolly. 2013. The floodplain food web mosaic: a study of its importance to salmon and steelhead with implications for their recovery. Ecological Applications 23(1): 189-207. Link to DOI: 10.1890/12-0806.1.
Bellmore, J.R., C.V. Baxter, A.M. Ray, L. Denny, K. Tardy, and E. Galloway. 2012. Assessing the potential for salmon recovery via floodplain restoration: a multitrophic level comparison of dredge-mined to reference segments. Environmental Management 49: 734-750. Link to DOI 10.1007/s00267-012-9813-x.
Shields, B.A., K.L. Groves, C. Rombaugh, and R. Bellmore. 2002. Ligulosis associated with mortality in largescale suckers. Journal of Fish Biology 61:448-455. Link to DOI: 10.1111/j.1095-8649.2002.tb01576.x.