Current Research

My current work is focused on developing new effectiveness monitoring metrics to assess the impact of riparian and stream restoration programs; studying soil-water interactions and their role in regulating the export of carbon and nutrients from coastal temperate rainforest watersheds; developing watershed classification methods to predict the effects of climate change; studying carbon fluxes from coastal temperate rainforest watersheds; and studying the ecology of hyporheic zones and retention and transformation of salmon-derived nutrients in streams.

Research Interests

Stream ecology, nutrient cycling, carbon cycling, riparian-stream interactions, hydrology and ecology of surface-groundwater interaction zones, global warming and its effects on streams and stream habitat, terrestrial-near shore coastal zone interactions, fate of carbon in streams and estuaries, and the functional role of wetlands in watersheds.

Past Research

My past work has focused on microbial ecology, microbial carbon cycling, dissolved organic matter processing and chemistry, stream nutrient cycling, stream trophic ecology, invertebrate feeding ecology, ecology of blackwater rivers, and development of methods to measure aquatic bacteria and biomass.

Why This Research is Important

Understanding the management of aquatic ecosystems and watersheds requires an understanding of the fundamental energy and nutrient cycles and their controls. Human activities and natural disturbances all affect the underlying physical and biological processes within ecosystems in interacting ways. To anticipate and mitigate the long-term impacts of changes on ecosystem structure and function requires a better understanding of how the ecosystem works, what supports biological production, and how a habitat's physical characteristics respond to disturbance.

Education

• University of Georgia, Ph.D. Aquatic ecology 1985
• University of South Carolina, B.S. Biology 1974

Featured Publications & Products

• Fellman, Jason B.; Hood, Eran; Edwards, Richard T.; Jones, Jeremy B. 2009. Uptake of allochthonous dissolved organic matter from soil and salmon in coastal temperate rainforest streams.
• Fellman, Jason B.; Hood, Eran; D'Amore, David V.; Edwards, Richard T.; White, Dan. 2009. Seasonal changes in the chemical quality and biodegradability of dissolved organic matter exported from soils to streams in coastal temperate rainforest watersheds.
• Hood, Eran; Fellman, Jason; Spencer, Robert G.M.; Hernes, Peter J.; Edwards, Rick; D'Amore, David; Scott, Durelle. 2009. Glaciers as a source of ancient and labile organic matter to the marine environment..
• Fellman, Jason B.; Hood, Eran; Edwards, Richard T.; D'Amore, David V. 2009. Changes in the concentration, biodegradability, and fluorescent properties of dissolved organic matter during stormflows in coastal temperate watersheds.
• Wondzell, Steven; LaNier, Justin; Haggerty, Roy; Woodsmith, Richard D.; Edwards, Richard T. 2009. Changes in hyporheic exhange flow following experimental wood removal in a small, low-gradient stream..

Publications

• Edwards, Rick T.; D'Amore, David V; Biles, Frances E.; Fellman, Jason B.; Hood, Eran W.; Trubilowicz, Joel W.; Floyd, William C. 2021. Riverine dissolved organic carbon and freshwater export in the eastern Gulf of Alaska.
• Fellman, Jason B.; Buma, Brian; Hood, Eran; Edwards, Richard T.; D’Amore, David V. 2017. Linking LiDAR with streamwater biogeochemistry in coastal temperate rainforest watersheds.
• D’Amore, David V; Edwards, Rick T.; Biles, Frances E. 2016. Biophysical controls on dissolved organic carbon concentrations of Alaskan coastal temperate rainforest streams.
• Buma, Brian ; Krapek, John ; Edwards, Rick T. 2016. Watershed-scale forest biomass distribution in a perhumid temperate rainforest as driven by topographic, soil, and disturbance variables.
• D'Amore, David V.; Edwards, Rick T.; Herendeen, Paul A.; Hood, Eran; Fellman, Jason B. 2015. Dissolved organic carbon fluxes from hydropedologic units in Alaskan coastal temperate rainforest watersheds.
• Mazza, Rhonda; Edwards, Richard; D'Amore, David. 2010. Life on the edge: carbon fluxes from wetland to ocean along Alaska's coastal temperate rain forest.
• Johnson, A.C.; Edwards, R.T.; Erhardt, R. 2007. Ground-water response to forest harvest: implications for hillslope stability.
• Wipfli, Mark S.; Deal, Robert L.; Hennon, Paul E.; Johnson, Adelaide C.; Edwards, Richard T.; De Santo, Toni L.; Gomi, Takashi; Orlikowska, Ewa H.; Bryant, Mason D.; Schultz, Mark E.; LeSage, Christian; Kimbirauskus, Ryan; D'Amore, David V. 2003. Compatible management of red alder-conifer ecosystems in southeastern Alaska..
• Wipfli, Mark S.; Deal, Robert L.; Hennon, Paul E.; Johnson, Adelaide C.; de Santo, Toni L.; Hanley, Thomas A.; Schultz, Mark E.; Bryant, Mason D.; Edwards, Richard T.; Orlikowska, Ewa H.; Gomi, Takashi. 2002. Managing young upland forests in southeast Alaska for wood products, wildlife, aquatic resources, and fishes: problem analysis and study plan..

Research Highlights

Highlight	Title	Year
PNW-2018-83	Destabilization of glacial rock faces causes tsunami in alpine lake This hazard will likely become more common as glaciers recede. Documentation of this still rare event provides insight to the dynamics of alpine ...	2018
PNW-2010-008	New methods quantify fluxes of carbon from terrestrial and aquatic ecosystems in southeast Alaska Scientists in southeast Alaska have established methods for quantifying fluxes of carbon from terrestrial and aquatic ecosystems across a gradie ...	2010