"Bottom-up drivers of primary producers and predator populations in Oregon streams"
Understanding factors limiting food web productivity is important to effective management of stream ecosystems and biota. Two key resources that influence productivity at the base of the food web are light and nutrients. Come hear about how two widespread anthropogenic modifications to stream ecosystems of the Pacific Northwest — riparian harvesting and the reduction of naturally spawning salmon — have altered light and nutrients in streams and how these changes may be impacting stream food webs. The first half focuses on how riparian stand development processes following historic clear-cutting influence stream consumers through bottom-up processes. The second half evaluates how the drastic reduction in spawning salmon in NE Oregon may be influencing stream food webs, and in particular juvenile Chinook Salmon and steelhead.
THURSDAY, MAY 9. 9AM NASH 032
WEBEX LINK: BEAV.ES/Zcc