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1101 - 1125 of 1229 Items << < 40 41 42 43 44 45 46 47 48 49 > >>
1101 - 1125 of 1229 Items << < 40 41 42 43 44 45 46 47 48 49 > >>
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A general Limnological Survey was made of the Navasota River, Texas, a tributary of the Brazos River, between February, 1968 and March, 1970. Five stations on the main channel were visited twice monthly from February, 1968 to January, 1970, and...
2011-07-01
2011-07-01 1973-12-01 |
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among scientists and managers than ever before. By 1995, all of the basin's recovery plans, Return to the River, and the National Research Council's Upstream report urged an adaptive approach.21
Other essential pieces of an adaptive management...
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Google Earth has given internet users the power of a virtual globe at their fingertips. It is
a free, easy to use tool that avoids the need for technical training, and uses a simple,
intuitive interface. For this reason, Google Earth appeals to...
2010-04-07T22:55:53Z (iso8601)
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1. Rangeland for domestic livestock and wildlife. Over 2,700 grazing permittees and lessees utilize the public lands. Many thousands of big game animals, including deer, antelope, bighorn sheep, javelina, and considerable bird life also utilize...
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A GUIDE TO PART I - ESTABLISHING COMMON BASINS A GUIDE TO PART II - THE FOUR ELEMENTS OF THE OREGON PLAN THE OREGON PLAN - BASIN BY BASIN KEY TO BASIN LAYOUTS BASIN REPORTS North Coast Umpqua South Coast Rogue Klamath Lakes Basin Owyhee-Malheur...
2024-05-21
2005-02-18 2004-12-16 |
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1982-2002; ill., maps; Title covers calendar years 1985-1987; CA 9000-3-0003 Subagreement 12; Includes bibliographic references; Issues lack volume numbering
1985-05-21
2009-01-13 2009-03-23 |
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Ill., map; Typescript; Map of Crater Lake National Park and vicinity, issued by the U.S. Geological Survey, edition of 1946; Thesis (M.S.)--Oregon State College, 1948; Includes bibliographical references (leaves 118-120)
2024-05-21
2008-09-02 2008-12-01 |
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Little is known on the importance of riparian areas to birds near small headwater streams in mesic forests. Progress towards understanding limiting factors that affect bird populations has been difficult because of lack of information beyond the...
2010-10-14 (iso8601)
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The association of other materials with DNA has been studied
extensively in higher organisms and more recently in bacteria.
However, investigation of these complexes in bacteria have for the
most part been restricted to the study of a specific...
1967-06-06 (iso8601)
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While microbial colonization of wood is presumed to be characterized by a
myriad of interactions between numerous organisms, studying these processes is
often difficult owing to the opaque nature of the wood and the inability to readily...
2004-02-23 (iso8601)
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This classification lists the native plant associations known to occur in Oregon, and includes both successional and climax vegetation types that were an important part of the presettlement landscape of Oregon. It serves as an index to the...
2004-01 (iso8601)
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Emerging infectious diseases in wild animals threaten global biodiversity as well as domestic animal and human health. Their unprecedented increase in conjunction with anthropogenically induced range shifts of endemic pathogens exposes hosts to...
2013-12-02 (iso8601)
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Sage grouse are a species of concern because their abundance, distribution,
and productivity have declined during the past century. Sage grouse productivity
has been linked to specific habitat components including particular forbs and native...
2000-04-03 (iso8601)
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These studies are part of the Demonstration of Ecosystem Management Options
(DEMO) study, a program researching the effects of different levels and patterns of
green-tree retention on ecological, economic, and social phenomena. We restricted our...
2000-11-29 (iso8601)
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Understanding controls over the distribution of soil bacteria is a fundamental step toward describing soil ecosystems, understanding their functional capabilities, and predicting their responses to environmental change. This study investigated the...
2013-06-18 (iso8601)
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This fifth annual Cooperative Pole Research Program report
outlines our progress in the six project objectives.
Improved Fumigants
Sampling of previously established field tests revealed that
Vorlex and Chloropicrin continued to perform well after...
1985-08 (iso8601)
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This paper analyzes the effects of spatial closures on the multi-species
groundfish trawl fishery in northern and central California. The analysis
differentiates between changes in total effort and in the spatial distribution
of effort before and...
2010 (iso8601)
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Marine protected areas (MPAs) are increasingly being used as a conservation tool for highly mobile marine vertebrates and the focus is typically on protecting breeding areas where individuals are aggregated seasonally. Yet movements during the...
2013-02-14 (iso8601)
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Marine provinces, founded on contrasting floras or faunas, have been recognized for more than 150 years but were not consistently defined by endemism until 1974. At that time, provinces were based on at least a 10% endemism and nested within...
2012-01 (iso8601)
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The Oregon continental shelf waters are typically characterized by four to five major upwelling events that occur between May and October. The upwelled water is rich in nutrients, which fuels an increase in phytoplankton biomass. The onset of El...
2000-08-24 (iso8601)
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