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501 - 525 of 1229 Items << < 16 17 18 19 20 21 22 23 24 25 > >>
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An ecological study of the benthic and fish communities at Mokapu, O’ahu, was completed in the summer of 1980 approximately three years subsequent to the installation of an ocean outfall by the City and County of Honolulu. Data were obtained from...
2008-09-17
2008-09-17 1981-06-01 |
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SIGNIFICANT FINDINGS The distribution of SOD2q values (measured sediment oxygen demand values corrected to 20°C [degrees Celsius]) had a median value of 1.6 g/m2/day (grams per square meter per day) in the spring and 1.7 g/m2/day in the late...
2024-09-21
2005-02-04 2004-12-22 |
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The School of Forestry Senior Forestry Papers consist of about 700 undergraduate theses and term papers completed by forestry students at Oregon State College from 1910 to 1956. The theses represent a wide range of forestry and forest products...
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Plankton and surface sediment samples from the Gulf of California
were analyzed to determine the present geographic distribution of silicoflagellate
species in this area. Variations in the composition of the
silicoflagellate assemblage are related...
1982-02-24 (iso8601)
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Agency Lakes. Oregon. 2005
M.Wood
By Gene R. Hoilman, Mary K. Lindenberg, and Tamara
Abstract
During June-October 2005, water quality data were collected from Upper Klamath and Agency Lakes In Oregon, and meteorological data were collected around...
2024-09-21
2008-06-18 2008-06-18 |
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Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. This is an interview with attorney Roger Marzulla. See the full report at http://www.thewaterreport.com/
2005-01-15
2008-07-25 2006-06-13 |
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This study delineates and characterizes the distribution of montane meadows in the Willamette National Forest, identifies encroachment patterns in relation to topographic features and proximity to trees in the Chucksney-Grasshopper meadow complex,...
2008-01-14T19:06:47Z (iso8601)
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With fire suppression, many western forests are expected to have fewer gaps
and higher stem density of shade-tolerant species as light competition becomes a more
significant influence on stand pattern and composition. We compared species...
2004 (iso8601)
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Forty-nine families and 268 species of fishes are known to inhabit the freshwaters of Texas. We report on the distribution and status of these fishes and provide a key to their identification. Of the native fishes originally found in Texas, five...
2009-06-26
2009-06-26 2008-07-01 2009-06-26 |
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Metacarcinus magister, the Dungeness crab, is a commercially important species on the Pacific Northwest coast as the most profitable fishery in Oregon and an important ecological player as both predator and prey. Understanding the spatial...
2013-10-11 (iso8601)
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Metacarcinus magister, the Dungeness crab, is a commercially important species on the Pacific Northwest coast as the most profitable fishery in Oregon and an important ecological player as both predator and prey. Understanding the spatial...
2013-10-11 (iso8601)
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Invasive species can alter the succession of ecological communities because they are
often adapted to the disturbed conditions that initiate succession. The extent to which this
occurs may depend on how widely they are distributed across...
2015-02-06 (iso8601)
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The Nearctic leafhoppers placed in the genus Sorhoanus Ribaut
by Oman (1949) were found to belong to several genera, some of
which are Holarctic in distribution. None is properly placed in
Sorhoanus as presently defined. The genera Sorhoanus,...
1970-05-19 (iso8601)
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I studied riparian forests of four western Oregon watersheds (dry south to wet north) to determine the multiscale controls on woody riparian vegetation. I conducted separate analyses of controls on plant distribution, diversity, and tree...
2004-11-22 (iso8601)
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A two-dimensional finite element model based on Galerkin's weighted residual approach and incorporating an upstream weighting technique was developed to predict the simultaneous transformation and transport of nitrogen species. The nitrogen cycle...
1988-11-01
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Field biology studies of three grain aphids, Macrosiphum
avenae (Fabr.), Acyrthosiphon dirhodum (Walker), and Rhopalosiphum
padi (L.) were conducted near Corvallis, Oregon, from 1961 to
1964.
Populations of M. avenae were found on grain plants,...
1966-03-15 (iso8601)
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The species compositions and densities of the littoral and pelagic zooplankton
assemblages in Crater Lake were compared. The littoral and pelagic zooplankton
assemblages of most lakes are typically different due to different habitat conditions in...
1998-05-29 (iso8601)
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The purposes of this investigation were to measure the relative
levels of enzymatic and respiratory metabolism of some vertically
migrating mesopelagic fishes collected from the ocean waters off
Oregon and to modify and adapt an enzyme method for...
1965-03-19 (iso8601)
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Montane meadows comprise less than 5% of the landscape of the western Cascades of Oregon, but they provide habitat for diverse species of plants and pollinators. Little is known about plant-pollinator network structure at these sites. This study...
2012-06-01 (iso8601)
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Arctostaphylos viscida Parry and A. canescens Eastw.,
two well-known and frequently encountered manzanitas in the
Siskiyou Mountains in southwestern Oregon, are shown to
hybridize and to produce an extensive series of morphological
intermediates....
1965-11-30 (iso8601)
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Intermittent, headwater streams recently have been recognized as important
components of forest ecosystems and have been provided increased protection by the
Northwest Forest Plan. However, few studies have examined their distribution,
dynamics,...
1997-02-03 (iso8601)
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Hyperiid amphipods from one-meter plankton net collections made over a two year period at stations 15, 25, 50, and 65 nautical miles off Newport, Oregon, were examined. Nineteen species were identified. The occurrence of some species off Oregon...
1967-05-10 (iso8601)
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Pallidosis is a disease of strawberry identified in 1957 with an unknown etiology.
Two previously uncharacterized viruses in strawberry, Strawberry pallidosis associated
virus (SPaV) and Beet pseudo-yellows virus (BPYV), have been found associated...
2004-03-19 (iso8601)
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ill.; Thesis (Ph. D.)--Ohio State University, 2001; Includes bibliographical references (leaves 100-114); Advisor: Andrea Wolfe, Evolution, Ecology and Organismal Biology Program
2024-09-21
2008-10-31 2008-12-15 |
