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Effects of a 4-inch suction dredge on benthic macroinvertebrates in southwestern Oregon

Creator:: Perez, Diana H.
Abstract:: Effects of 4-inch (10.16 cm) suction dredge mining on benthic macroinvertebrates in 3rd to 4th order streams were investigated in 1996 by evaluating four mining claim operations in Althouse Creek, Sucker Creek, and Taylor Creek in southwestern Oregon's Rogue River basin. The effects were site-specific. The study showed no significant...
Resource Type:: Masters Thesis
Full Text:: macroinvertebrates in southwestern Oregon AN ABSTRACT OF THE THESIS OF Diana H. Perez for the degree ofMaster of

Impacts of dredged material disposal on estuarine benthic macrofaunal communities in Coos Bay, Oregon

Creator:: Erman, Lisa T.
Abstract:: Hopper dredge disposal of coarse grained sediment was investigated between May and September, 1986, at a designated disposal area, Site G, in Coos Bay, Oregon. The objectives of the study were to: (a) identify and describe the benthic macrofaunal community structure at Site G during May and September, 1986; (b)...
Resource Type:: Masters Thesis
Full Text:: for maintenance dredging and the environmental problems associated with it are addressed in

Low latitude island beach processes

Creator:: Munbodh, Munesh
Resource Type:: Capstone Project
Date Created:
Full Text:: Report submitted to Marine Resource Management Program School of Oceanography Oregon State University

The agronomic, environmental, and economic implications of the introduction of terbacil for weed control in Oregon commercial peppermint operations

Creator:: Harris, James O.
Abstract:: The use of terbacil for weed control was adapted by a high percentage of Oregon peppermint growers soon after its introduction in 1967. To help clarify some of the implications of terbacil usage, three studies were undertaken to collect information concerning (a) the movement and build-up of terbacil in various...
Resource Type:: Masters Thesis
Full Text:: The agronomic, environmental, and economic implications

An analysis of two adjacent agricultural watersheds in west central Oregon

Creator:: Schoeneberger, Philip James
Abstract:: Two small adjacent watersheds on the west-central edge of the Willamette Valley of western Oregon were studied. Information was gathered on existing conditions to determine the suitability of the two watersheds for a paired-watershed study design. A soil survey was conducted using slightly modified soil series previously established for the...
Resource Type:: Masters Thesis
Full Text:: west central Oregon AN ABSTRACT OF THE THESIS OF Philip James Schoeneberger for the degree of

Eyes on the Seafloor : Using Video Tools to Monitor Benthic Communities at Dredged Material Disposal Sites at the Mouth of the Columbia River

Creator:: Fields, Stephanie A.
Abstract:: The mouth of the Columbia River (MCR) is an intersection of more than a river and ocean, but also multiple economically valuable activities including dredging to maintain a deep draft shipping channel and an active Dungeness crab (Metacarcinus magister) fishery. More than three million cubic meters of sediment are annually...
Resource Type:: Masters Thesis
Full Text:: ), the US Environmental Protection Agency (USEPA), US Army Corps of Engineers (USACE), Oregon

Nitrate leaching and model evaluation under winter cover crops

Creator:: Minshew, Hudson F.
Resource Type:: Masters Thesis
Full Text:: leaching periods in winter. Four winter cover crops were grown in western Oregon during a 5-yr field

The accumulation of cadmium, copper and nickel in freshwater mussels (Margaritifera margaritifera), algae (Cladophora sp.), and sediment from Elk Creek, Oregon

Creator:: Sigismondi, Linda A.
Abstract:: Concern about heavy metal pollution has increased during the past decade in which studies have shown that heavy metals are accumulating in the environment and that these metals, in excess, are toxic to organisms, including man. Because of this concern, scientists have suggested the use of indigenous organisms as monitors...
Resource Type:: Masters Thesis
Full Text:: freshwater mussels (Margaritifera margaritifera), algae (Cladophora sp.), and sediment from Elk Creek, Oregon

Fine organic debris and dissolved oxygen in streamed gravels in the Oregon Coast Range

Creator:: Skaugset, Arne E.
Abstract:: Intragravel organic loading and intragravel dissolved oxygen were studied to determine the relationship between timber harvesting adjacent to first-, second-, and third-order streams and intragravel water quality. Twenty watersheds in the central Coast Range of western Oregon were studied of which five were undisturbed, nine were partially harvested, and six...
Resource Type:: Masters Thesis

Historical disturbance regimes as a reference for forest policy

Creator:: Thompson, Jonathan R.
Abstract:: Using the historical range of forest conditions as a reference for managing landscapes has been proposed as a "coarse-filter" approach to biodiversity conservation. By emulating historical disturbance processes, it is thought that forest management can produce forest composition and structure similar to the conditions that once supported the native biota....
Resource Type:: Masters Thesis
Full Text:: regime. The study area was the 3-million hectare Oregon Coast Range. Four owner groups were recognized

ScholarsArchive@OSU

Effects of a 4-inch suction dredge on benthic macroinvertebrates in southwestern Oregon

Impacts of dredged material disposal on estuarine benthic macrofaunal communities in Coos Bay, Oregon

Low latitude island beach processes

The agronomic, environmental, and economic implications of the introduction of terbacil for weed control in Oregon commercial peppermint operations

An analysis of two adjacent agricultural watersheds in west central Oregon

Eyes on the Seafloor : Using Video Tools to Monitor Benthic Communities at Dredged Material Disposal Sites at the Mouth of the Columbia River

Nitrate leaching and model evaluation under winter cover crops

The accumulation of cadmium, copper and nickel in freshwater mussels (Margaritifera margaritifera), algae (Cladophora sp.), and sediment from Elk Creek, Oregon

Fine organic debris and dissolved oxygen in streamed gravels in the Oregon Coast Range

Historical disturbance regimes as a reference for forest policy

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