Trends in greater sage-grouse breeding populations are typically indexed by determining the peak number of males attending a lek in a lekking season. Numerous studies have estimated negative trends in sage-grouse breeding populations over time via data collected for the last 50 years. However, the inherent bias in data collection...
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SUGGESTED CITATION
Nielson, R. M., L. L. McDonald, J. Mitchell, S. Howlin, and C
The Tiller Region assessment has two goals:
1) To describe the past, present, and potential future conditions that affect water quality and fish habitat within the Tiller Region; and
2) To provide a research-based action plan that suggests voluntary activities to improve fish habitat and water quality within the Tiller...
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Photo 3-1: Photograph looking east-southeast (upstream) at Elk Creek near Drew,
where the
A systematic review of evidence was conducted concerning the effects of large wood placement on salmonids. In contrast to a general literature review, a narrowly focused question was targeted. The question was formulated before the review commenced and specified the subject, treatment, and outcomes of interest. The primary review question...
Against the backdrop of growing concern about dead zones, rare and endangered sea mammals, depletion of Oregon’s once‐abundant fish stocks, acidification threatening coastal molluscs, and proposals for marine reserves along Oregon’s coastline, a multidisciplinary group of scientists was called together in 2008 to discuss what is known about Oregon’s coastal...
The fish and wildlife resources of the Middle Coast Basin (Fig. 1), their present status, value, limiting factors and water requirements are reviewed in this report. Minimum and optimum stream flow recommendations are presented and field study methods outlined.
The flow recommendations for fish life are primarily for use by...
Counts of males attending leks in the spring have been the primary means employed by states to monitor status of greater sage-grouse (Centrocercus urophansianus) populations for over 75 years. Despite limitations and potential biases, lek count data remain the only long-term, range-wide dataset available for evaluating trends in sage-grouse populations....
The Olalla / Lookingglass Watershed assessment has two goals:
1) To describe the past, present, and potential future conditions that affect water quality and fish habitat within the Olalla / Lookingglass Watershed; and
2) To provide a research-based action plan that suggests voluntary activities to improve fish habitat and water...