J. Ryan Bellmore
Research Fish Biologist
11175 Auke Lake Way
Contact J. Ryan Bellmore
"Who looks upon a river in a meditative hour, and is not reminded of the flux of all things?" - Ralph Waldo Emerson
Freshwater ecosystems provide invaluable services to society, but are among the most imperiled environments on Earth. My research aims to illuminate the often invisible mechanisms that support freshwater ecosystem productivity and resilience, and use this knowledge to contribute to better-informed stewardship. My research employs holistic, ecosystem-based approaches that combine tools and theory from food-web ecology, ecosystem ecology, and system dynamics modeling.
Current research themes include: (1) synthesizing ecological impacts of dam removal, (2) investigating the influence of landscape complexity on river food webs, (3) quantifying the impact of ecological subsidies on rivers, (4) assessing the impacts of climate change of Pacific salmon, and (5) developing system dynamics models to inform freshwater restoration and management.
- Structure and dynamics of river food webs
- Restoration of freshwater ecosystems
- System dynamics modeling
- Ecology and management of Pacific salmon and trout
- Impact of Invasive species on aquatic ecosystems
Much of my past research has focused on river-floodplain ecosystems in the Pacific Northwest and the importance of these floodplains for fish. My dissertation research at Idaho State University illustrated that floodplains support diverse food webs that are important for Pacific salmon and trout. Moreover, this reseach suggested that these complex and interconnected food webs may promote the long-term maintenance of biodiversity by stabalizing ecosystems against perterbations.
Why This Research is Important
Healthy rivers, streams and lakes directly contribute to human wellbeing. In the Pacific Northwest, for instance, forest streams support valuable commercial, recreational, and subsistence salmon fisheries. By illuminating how these ecosystem's function, my research contributes to informed management and restoration so that these freshwater resources can be enjoyed by future generations
- Idaho State University, Ph.D. Biology 2011
- Oregon State University, B.S. Fisheries and Wildlife Science 2004
- Mejia, Francine H.; Fremier, Alexander K.; Benjamin, Joseph R.; Bellmore, J. Ryan; Grimm, Adrianne Z.; Watson, Grace A.; Newsom, Michael . 2019. Stream metabolism increases with drainage area and peaks asynchronously across a stream network.
- Daniels, Silvie ; Bellmore, J. Ryan; Benjamin, Joseph R.; Witters, Nele ; Vangronsveld, Jaco ; Van Passel, Steven . 2018. Quantification of the indirect use value of functional group diversity based on the ecological role of species in the ecosystem.
- Watts, Andrea; Bellmore, Ryan, J.; Benjamin, Joseph; Baxter, Colden. 2018. River food webs: Incorporating nature s invisible fabric into river management.
- Penaluna, Brooke E.; Olson, Deanna H.; Flitcroft, Rebecca L.; Weber, Matthew A.; Bellmore, J. Ryan; Wondzell, Steven M.; Dunham, Jason B.; Johnson, Sherri L.; Reeves, Gordon H. 2017. Aquatic biodiversity in forests: a weak link in ecosystem services resilience.
- Foley, M. M.; Bellmore, J. R.; O'Connor, J. E.; Duda, J. J.; East, A. E.; Grant, G. E.; Anderson, C. W.; Bountry, J. A.; Collins, M. J.; Connolly, P. J.; Craig, L. S.; Evans, J. E.; Greene, S. L.; Magilligan, F. J.; Magirl, C. S.; Major, J. J.; Pess, G. R.; Randle, T. J.; Shafroth, P. B.; Torgersen, C. E.; Tullos, D.; Wilcox, A. C. 2017. Dam removal: Listening in.
- Roon, David; Dunham, Jason; Harvey, Bret; Bellmore, Ryan, J.; Olson, Deanna; Reeves, Gordon. 2017. Evaluating the ecological trade-offs of riparian thinning for headwater stream ecosystems in second-growth redwood forests.
- Sergeant, Christopher J.; Bellmore, J. Ryan; McConnell, Casey; Moore, Jonathan W. 2017. High salmon density and low discharge create periodic hypoxia in coastal rivers.
- Bellmore, J. Ryan; Benjamin, Joseph R.; Newsom, Michael; Bountry, Jennifer A.; Dombroski, Daniel. 2017. Incorporating food web dynamics into ecological restoration: a modeling approach for river ecosystems.
- Benjamin, Joseph R.; Bellmore, J. Ryan; Watson, Grace A. 2016. Response of ecosystem metabolism to low densities of spawning Chinook Salmon.
- Ryan Bellmore, J.; Duda, Jeffrey J.; Craig, Laura S.; Greene, Samantha L.; Torgersen, Christian E.; Collins, Mathias J.; Vittum, Katherine. 2016. Status and trends of dam removal research in the United States.
- Tullos, Desirée D.; Collins, Mathias J.; Bellmore, J. Ryan; Bountry, Jennifer A.; Connolly, Patrick J.; Shafroth, Patrick B.; Wilcox, Andrew C. 2016. Synthesis of common management concerns associated with dam removal.
|After the dam comes down|
New work synthesizes knowledge about the physical and ecological responses to dam removal.
|Illuminating Nature’s Invisible Fabric|
Forest Service scientists conducted a series of studies to understand how river fish are connected to the broader food web. They then used this ...