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Filtering by: Subject Dams -- Environmental aspects -- Oregon -- North Umpqua River Watershed

Passage, migration behavior, and autoecology of adult Pacific lamprey at Winchester Dam and within the North Umpqua River Basin, Oregon, USA

Creator:

Lampman, Ralph Tatsuo

Abstract:

The extensive reduction in adult Pacific lamprey (Entosphenus tridentatus) counts at many hydroelectric dams in the northwestern USA signals a substantial decline in lamprey numbers across the entire region in the past 40 to 50 years. Among the many potential causes of this decline, obstruction of migration routes has likely...

Resource Type:

Masters Thesis

Full Text:

Winchester Dam and within the North Umpqua River Basin, Oregon, USA Abstract approved
Effects of wildfire on growth and demographics of coastal cutthroat trout in headwater streams

Creator:

Heck, Michael P.

Abstract:

Wildfire is a largely terrestrial perturbation broadly recognized as an agent of disturbance and ecological change in forested biomes. Effects of post-fire conditions on biotic components of aquatic systems have been less well-documented, although hypothetically, the two are strongly connected. In fact, the influence of wildfire may be most profound...

Resource Type:

Masters Thesis

Full Text:

the North Umpqua basin of western Oregon. Burn severities ranged from moderate to severe. A