The Effects of Stream Adjacent Logging on Downstream Populations of Coastal Cutthroat Trout
Bateman, D.S., R.E. Gresswell, A.M. Berger, D.P. Hockman-Wert, D.W. Leer

Here we evaluate the response of a headwater fish community to forest management using a before, after, control, impact (BACI) study design. Annual fish abundance and biomass estimates are from a census of pool and cascade habitat units over the fish-bearing portion of both the reference and treatment catchments. Movement, survival, and growth were estimated from the monitoring and recapture of salmonids marked with passive integrated transponder (PIT) tags. Sampling consisted of an annual electrofishing and marking event during the low-flow period (2001-2011), and beginning in the winter of 2003, there were three annual mobile antenna PIT-tag survey events in December, March, and June. Additionally, continuously operating swim-through antennas were located at the downstream end of each stream segment. The study calibration phase occurred 2001-05. Treatment-1 (2006-2008) consisted of stream adjacent logging without retention of standing tree buffers with harvest units occurring in channels upstream from channel sections inhabited by fish. During Treatment-2 (2009-2011), there was stream adjacent logging with standard buffers as prescribed by current forest practice regulations. Analysis occurred at two spatial scales, tributaries only and catchments. Overall, very few detectable changes in habitat or biologic parameters were observed in conjunction with either treatment.

DISCIPLINE: Fisheries    STUDY: Hinkle Creek    TYPE: Presentations    TAGS: Fish, coastal cutthroat trout, logging, Oregon Forest Practices Rules, Habitat response
Sediment Symposium: Quantifying In-Stream Sediment and Biotic Responses Presentation Videos

At the Sediment Symposium, researchers review and summarize our overall understanding of current scientific knowledge of in-stream sediment. The video archive of the presentations is available.

To view the presentations, please visit this website:  http://oregonstate.edu/conferences/event/2013sedimentsummit/videoarchive...

DISCIPLINE: Disciplinary Results    STUDY: Alsea, Hinkle Creek, Trask    TYPE: Presentations    TAGS: Conference, Video, Sediment, Stream, Turbidity, Macroinvertebrate, Amphibian, Road, Fish, Oregon
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