Concern over the incidental catch of non-targeted species in commercial and
recreational fisheries has greatly increased. Public attention, negative publicity,
controversies between differing fisheries and gear groups and the reauthorization of the
Magnuson-Stevens Fishery Conservation and Management Act have led to an increased
awareness of the issue. The Pacific halibut...
Strip tillage is a conservation tillage system that was developed for row crops grown in heavy, poorly drained cool soils in the northern corn belt states, but which some Pacific Northwest farmers are adapting to their local conditions. This publication provides information on strip tillage compared with conventional tillage, in...
In spite of considerable efforts to restore natural runs of anadromous salmonids in the Pacific Northwest, they remain at risk of extirpation. Along with many other factors influencing the decline, stocking from hatcheries over the past hundred years is often suggested to be a major cause. The listing of over...
Wild salmon populations are in decline in the Pacific Northwest. In the region populations and runs of Chinook (Oncorhynchus tshawytsha), Chum (Oncorhynchus keta), Coho (Oncorhynchus kisutch), Sockey (Oncorhynchus nerka), and Steelhead (Oncorhynchus mykiss) have been listed as threatened and/or endangered under the Endangered Species Act (ESA) in the U.S. and/or...
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Denise H. Lach
Wild salmon populations are in decline in the PacificNorthwest. In the
The Mimulus washingtonensis complex is a group of morphologically similar
species centered in the Pacific Northwest. All are rare, and most are under
consideration for listing as endangered. Morphometric and pollination data were
used in developing a revised taxonomy for the group. Five species and two varieties
are recognized. Mimulus...
Surface erosion can be initiated by forest practices such as
timber harvest, road construction, and site preparation. A variety
of management and control measures can help reduce
this erosion. Surface erosion is generated by soil and operational
conditions that are conducive to or cause disturbance
and compaction. By using good...
Phylogeographic studies of six Pacific Northwest forest-associated
salamanders provide insight into historical and contemporary processes on
population genetic structure. Among Larch Mountain Salamanders (Plethodon
larselli), cytochrome b mitochondrial (mtDNA) sequences (381 bp) and random
amplified polymorphic DNA (RAPDs; 34 loci) supported separate Management
Units for northern and southern populations (12...
Successful conservation management requires an understanding of how species respond to intervention. Native and exotic species may respond differently to management interventions due to differences arising directly from their native or exotic origin (i.e., provenance) or from differences in life-history or phylogenetic lineage that are associated with provenance. Thus, selection...
As a developer in the Pacific Northwest, you have a unique opportunity to help maintain and improve the health of streams and riparian areas. This brochure describes what a riparian area is, why it is important, and what you can do to take care of the land. A healthy riparian...
A s a recreationist, you have a unique opportunity to help maintain or improve the health of streams and riparian areas. A riparian area is the land adjacent to a stream, lake, or wetland. Healthy riparian areas often have moist, fertile soils that support many types of plants. These plants...
Riparian areas used as livestock pasture need special care to remain healthy and productive. This brochure describes what a riparian area is, why it is important, and what you as a rancher can do to take care of your land. A healthy riparian pasture benefits you, your livestock, wildlife, and...
As a landowner in the inland Pacific Northwest, you have a unique opportunity to help maintain or improve the health of streams and riparian areas. A riparian area is the area of land adjacent to a stream, lake, or wetland. Most healthy, natural riparian areas have moist, fertile soils that...
A s a landowner in the Pacific Northwest, you have a unique opportunity to help maintain or improve the health of streams and riparian areas. A riparian area is the area of land adjacent to a stream, lake, or wetland. Most healthy, natural riparian areas have moist, fertile soils that...
As a homeowner in the Pacific Northwest, you have a unique opportunity to help maintain or improve the health of streams and riparian areas. A riparian area is the area of land adjacent to a stream, lake, or wetland. Most healthy, natural riparian areas
have moist, fertile soils that support...
As a homeowner in the Pacific Northwest, you have a unique opportunity to help maintain or improve the health of streams and riparian areas. A riparian area is the area of land adjacent to a stream, lake, or wetland. Most healthy, natural riparian areas
have moist, fertile soils that support...
An innovative regional planning institution, the Northwest Power Planning Council, was created to plan for two conflicting water-related resources, fish and wildlife and electrical power. The Council is responsible for regional planning but implementation of those plans is largely the responsibility of four federal agencies and four state governments. As...
Biological invasions provide a unique opportunity to study the mechanisms that regulate community composition and ecosystem function. Invasive species that are also ecosystem engineers can substantially alter physical features in an environment, and this can lead to cascading effects on the biological community. Aquatic-terrestrial interface ecosystems are excellent systems to...
The Forest Service and the Bureau of Land Management propose to adopt coordinated ecosystem management direction for the lands they administer within the range of the northern spotted owl. This Supplemental Environmental Impact Statement (SETS) presents as alternatives the options, with slight modifications, developed by the Forest Ecosystem Management Assessment...
Increased temperature and precipitation variability and frequent extreme weather events due to climate change pose a threat to farming operations and agricultural communities. The recent IPCC assessment shows that the projected climate change will, on average, reduce wheat yields by 5% in temperate regions without adaptation and even more if...
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3 Is Conservation Tillage Risk-reducing? Evidence from the PacificNorthwest
Winter Farms
This study explores how environmental governance mechanisms affect state management of forest roads to address the chronic delivery of sediment to streams in Oregon, Washington, and California on private and state forestlands. Forest roads can degrade water quality and harm aquatic life when runoff mobilizes fine sediments from the road...
The Secretaries of Agriculture and the Interior propose limited changes to language within the Aquatic Conservation Strategy, part of the Northwest Forest Plan. Projects needed to achieve Northwest Forest Plan goals have been delayed or stopped due to misapplication of certain passages in the Aquatic Conservation Strategy. The Secretaries are...
The Fishery Conservation and Management Act of 1976
took effect on March 1, 1977. By this Act the United
States extended its management over fisheries to 200
nautical miles from shore. Extended fishery jurisdiction
was expected to promote industry development and expand
the contribution of the fishing industry to the...
Variable-retention harvesting was proposed to reduce loss of biodiversity and ecosystem processes associated with late-seral Douglas-fir (Pseudotsuga menziesii) forests in the Pacific Northwest. The Demonstration of Ecosystem Management Options experiment was established to test this hypothesis. Analysis presents various challenges to drawing statistical inferences about treatment effects. This dissertation explored...