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276 - 300 of 1229 Items << < 7 8 9 10 11 12 13 14 15 16 > >>
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Red alder (Alnus rubra Bong.) is a fast-growing pioneer species that colonizes disturbed forest sites west of the Cascade Mountains in the Pacific Northwest.
Streambottoms, toe slopes, and mass movement of surface soils have historically provided...
1988-05-31 (iso8601)
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North American freshwater mussels have been subjected to multiple stressors in recent decades that have contributed to declines in the status and distribution of many species. However, considerable uncertainty exists regarding the relative...
2013-02 (iso8601)
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A field study was established to explore stand structure and development patterns of
mature, mixed-species forests in the Interior Cedar-Hemlock (ICH) zone: moist cold
subzone of northwestern British Columbia. The species of interest in the study...
1995-09-15 (iso8601)
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Although it is well known that humans are strong modifiers of their
environment, there is a need for greater understanding of human-wildlife interactions,
both historically as well as currently. Historical journals can help shed light on early...
2003-06-02 (iso8601)
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Streams in the Alsea and Nestucca Sub-Basins were characterized using suites of
habitat attributes at the pool and reach scales. These suites were analyzed using a
multivariate process with the Multiple Response Permutation Procedure (MRPP)
to...
2005-06-02 (iso8601)
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Conservation of Neotropical game species must take into account the livelihood and food security needs of local human populations. Hunting management decisions should therefore rely on abundance and distribution data that are as representative as...
2016-04-13 (iso8601)
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In the Amazon the only described species
of Cordyceps sensu stricto (Hypocreales, Cordycipitaceae)
that parasitize insects of Orthopterida (orders
Orthoptera and Phasmida) are Cordyceps locustiphila
and C. uleana. However, the type specimens for...
2014-03 (iso8601)
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Using Southeast Asian hardwood veneers for exterior plywood siding
has caused problems because some species produced quality plywood while
other species produced plywood which delaminated soon after being put
in service in exterior exposure. This...
1979-02-08 (iso8601)
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Members of the family Simuliidae were studied in a single,
confined drainage system. In addition to determining the occurrence
and distribution of the species present, biological and ecological
observations were made. Specific measurements and...
1968-10-29 (iso8601)
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Rhyacophila is one of the largest genera of caddisflies, containing
about 465 species. Approximately 100 species are found in
North America with 83 occurring in the west, The larvae of 24
western North American species are associated for the first...
1973-08-09 (iso8601)
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Populations of Collom ia macrocalyx Brand were located
and observed in order to determine the distribution, ecology,
and reproductive biology of this species and probable
relationships to other members of the genus. The purpose of
the study was to...
1983-10-18 (iso8601)
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Aspects of bison ecology and behavior were studied in the Henry
Mountains, Utah during summer 1977 and summer 1978. Foraging
distributions of bison and of cattle were compared to elevation, slope,
horizontal distance from water, vertical distance...
1979-08-13 (iso8601)
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The dairy industry relies primarily on consistent acid production
by the lactic streptococci for the manufacture of certain cheeses
and fermented dairy products. Variation in these cultures due to
genetic exchange has not been thoroughly...
1965-05-07 (iso8601)
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This study was an investigation of lotic macroinvertebrate distribution in
northeastern Oregon at two different spatial and biological scales. Examination
of assemblages at a limited spatial scale revealed relationships with natural and...
2004-03-12 (iso8601)
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ill.; Thesis (M.S.)-Oregon State University, 1988; Includes bibliographical references (leaves 74-80)
1988-05-21
2009-08-24 2009-12-08 |
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We explored whether anti-predator behavior and intrinsic growth are co-evolved traits in 3 co-occurring juvenile flatfish species: English sole Pleuronectes vetulus, Pacific halibut Hippoglossus stenolepis and northern rock sole Lepidopsetta...
2012-07-24 (iso8601)
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ill. (some col.); col. maps; Typescript (photocopy); Thesis (M.E.M.)-Duke University, 2006; Includes bibliographical references (leaves 48-53)
2024-05-21
2008-08-19 2008-01-26 |
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Nearshore hypoxia within the Northern California Current (NCC) system is a seasonal phenomenon caused by coastal upwelling and occurs mainly during late-summer and early fall. The effects of low oxygen levels on fish and invertebrate communities,...
2012-08-24 (iso8601)
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Information about spatial distribution patterns during early life stages of fish is key to understanding dispersal trajectories and connectivity from spawning to nursery areas, as well as adult population dynamics. More than 30 years of historical...
2016-01 (iso8601)
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Seascape ecology is an emerging discipline focused on understanding how features of the marine habitat influence the
spatial distribution of marine species. However, there is still a gap in the development of concepts and techniques for its...
2014-10-27 (iso8601)
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1. The distribution of species is affected by many factors operating at a variety of temporal and spatial scales in a heterogeneous landscape. In lakes, fish communities are dynamic, influenced by landscape-level factors that control colonisation...
2006-01-01
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The composition and distribution of fish assemblages was examined in a
floodplain lake system in the Amazon basin. Quantitative samples were
collected during the 1992-1993 flooding season at Marchantaria Island, Solimoes
River. A total of 25,819...
2000-05-25 (iso8601)
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