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101 - 125 of 1229 Items << < 1 2 3 4 5 6 7 8 9 10 > >>
101 - 125 of 1229 Items << < 1 2 3 4 5 6 7 8 9 10 > >>
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Although the Pacific Northwest has the least proportion of non-native plant species in relation to other regions of North America, exotic species continue to spread into mountainous areas, including the Cascade Range. In a forested landscape,...
2006-07-24T15:26:06Z (iso8601)
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Species distribution models rely on the assumption that species' distributions are at equilibrium with environmental conditions within a region – i.e. they occur in all suitable habitats. If this assumption holds, species occurrence should be...
2014-01-01
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Only portions of issues of the Federal Register are available in the Klamath Waters Digital Library. Includes bibliographical reference; 50 CFR Part 17; Action: Notice of 90-day petition finding; “FR Doc. 02-12123 Filed 5-13-02: 8:45 a.m.;” See...
2002-05-14
2008-08-18 2005-06-22 |
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"December 10, 1999."
1999-05-01
2005-04-07 2005-04-01 |
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Rexford F. Daubenmire was a professor of botany at WSU and was widely recognized as one of the leading scholars in the field of plant ecology during his time. This photographic collection consists of several thousand black and white photographs...
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ABSTRACT
With the decreasing runs of natural fall chinook salmon* Oncorhmchus tshawytscha.inthe Klamath River basin, concerns were raised regarding the accuracy ma significance 01 me mainstem Klamath River .1 chinook spawner estimates. The U.S....
1997-10-01
2005-07-19 2005-05-24 |
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The sagebrush steppe ecosystem of the Columbia Plateau has become degraded by a long history of alternative land use and associated perturbations. Protection of remnant stands of intact sagebrush steppe currently relies upon their preservation...
2014-12-18 (iso8601)
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"September 8, 1999."
1999-05-01
2005-04-10 2005-04-01 |
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Cover title; Includes draft: Species conservation strategy: pumice grape fern, 1992, botrychium pumicola cov. in underw, Deschutes National Forest sensitive plant program
2009-07-16 2010-01-04 |
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The topic of species distribution modelling has been on of increasing interest in
recent years. As climate change is becoming of even more interest to researchers,
more tools are needed to better analyze and predict various climate change...
2010-07-20 (iso8601)
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The combined effects of habitat loss, degradation, and fragmentation pose a serious threat to Earth's biodiversity, imperiling even relatively common species. 'Habitat' is necessarily a species-specific concept, and investigations of bird...
2013-09-19 (iso8601)
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Correspondence, memoranda, speeches, articles, press releases, reports, studies, legislation, case files, campaign files, scrapbooks, photos, films, audiotapes, and other papers, relating chiefly to Church's career as a U.S. Senator from Idaho,...
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EXECUTIVE SUMMARY
This document presents the framework of a plan to reverse the decline of bull trout (Salvelinus confluentus) populations in the Klamath Basin. If successful, we expect bull trout to recover to a level where they will have a...
2008-12-12 2005-08-17 |
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Executive Summary
The Independent Multidisciplinary Science Team (IMST) convened a panel of experts on stream temperature and fish ecology on October 5-6, 2000 for a scientific workshop on human influences on stream temperature and responses...
2008-03-27 2005-08-15 |
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FINAL PROGRESS REPORT FOR
FISHERIES INVESTIGATIONS ON BLUE CREEK, TRIBUTARY TO K1AMATH RIVER, NORTHERN CALIFORNIA
FY 1993 (October 1992 - September 1993)
ABSTRACT
The U.S. Fish and Wildlife Service, Coastal California Fishery Resource Office...
2008-03-28 2005-12-05 |
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ABSTRACT
A water quality study was performed in the mainstem Klamath River from Keno, Oregon to Seiad Valley, California during 1996 through 1998. Four sites within the study area were continuously monitored using multiparameter recorders....
2024-05-01
2007-12-12 2005-11-01 |
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"April, 1999."
1999-04-01
2005-07-22 2005-05-29 |
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Divergent natural selection (fitness trade-offs) between environments often drives intraspecific diversification. When multiple species face a common environmental gradient their patterns of divergence might exhibit both shared and unique...
2020-12-10
2020-12-10 2024-05-01 |
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ABSTRACT This report details the third year of Klamath River basin juvenile salmonid fishery investigations and represents the second year of sampling with rotary screw traps. Two traps, positioned side to side, were used at both the Klamath and...
1992-05-01
2005-04-25 2005-04-20 |
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SUMMARY PROBLEM DEFINITION Upper Klamath Lake, a 90,000 acre body of water located in south-central Oregon, is eutrophic and has reached a stage where summer algal and macrophyte productivity causes severe aesthetic problems and often...
1983-05-01
2006-11-27 2005-10-13 |
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"January 2003."; Includes bibliographical references (p. 25-28)
2003-01-01
2007-12-12 2005-10-25 |
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The identity and distribution of ant species preying on the
western spruce budworm (Choristoneura occidentalis Freeman) was
investigated in eastern Oregon and western Montana. A sticky trap was
developed to index ant foraging activity in the...
1983-12-14 (iso8601)
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The offshore waters and the coastline of Oregon provide year-round habitat for a number of birds, marine mammals, sea turtles, and possibly bats, at least fifteen of which are federally listed as threatened or endangered. Previous workshops on...
2012 (iso8601)
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We have a poor understanding of the biotic communities in zero-order basins, drainages extending from ridgelines to the initiation of first-order streams. This study describes baseline plant and amphibian composition in unmanaged zero-order basins...
2002-06-03 (iso8601)
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The genus Ormyrus has a worldwide distribution and
comprises about sixty recognized species. The higher
taxonomic relationships of the genus are uncertain, as
evidenced by its placement in the families Ormyridae,
Pteromalidae, or Torymidae. Here,...
1987-01-14 (iso8601)
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