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Landscape associations of birds duri...

Diehl, Robert Howard.

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Landscape associations of birds during migratory stopover.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Landscape associations of birds during migratory stopover./
作者:	Diehl, Robert Howard.
面頁冊數:	142 p.
附註:	Adviser: Ronald P. Larkin.
Contained By:	Dissertation Abstracts International64-03B.
標題:	Biology, Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3086048

Landscape associations of birds during migratory stopover.
Diehl, Robert Howard.

Landscape associations of birds during migratory stopover. - 142 p.

Adviser: Ronald P. Larkin.

Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2003.

The challenge for migratory bird conservation is habitat preservation that sustains breeding, migration, and non-breeding biological processes. In choosing an appropriately scaled conservation arena for habitat preservation, a conservative and thorough examination of stopover habitat use patterns by migrants works back from the larger scales at which such relationships may occur. Because the use of stopover habitats by migrating birds occurs at spatial scales larger than traditional field techniques can easily accommodate, I quantify these relationship using the United States system of weather surveillance radars (popularly known as NEXRAD). To provide perspective on use of this system for biologists, I first describe the technical challenges as well as some of the biological potential of these radars for ornithological research.Subjects--Topical Terms:

1017726
Biology, Ecology.

Landscape associations of birds during migratory stopover.
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245 1 0 $a Landscape associations of birds during migratory stopover.
300 $a 142 p.
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500 $a Source: Dissertation Abstracts International, Volume: 64-03, Section: B, page: 1049.
502 $a Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2003.
520 $a The challenge for migratory bird conservation is habitat preservation that sustains breeding, migration, and non-breeding biological processes. In choosing an appropriately scaled conservation arena for habitat preservation, a conservative and thorough examination of stopover habitat use patterns by migrants works back from the larger scales at which such relationships may occur. Because the use of stopover habitats by migrating birds occurs at spatial scales larger than traditional field techniques can easily accommodate, I quantify these relationship using the United States system of weather surveillance radars (popularly known as NEXRAD). To provide perspective on use of this system for biologists, I first describe the technical challenges as well as some of the biological potential of these radars for ornithological research.
520 $a Using data from these radars, I then examined the influence of Lake Michigan and the distribution of woodland habitat on migrant concentrations in northeastern Illinois habitats during stopover. Lake Michigan exerted less influence on migrant abundance and density than the distribution and availability of habitat for stopover. There was evidence of post-migratory movement resulting in habitats within suburban landscapes experiencing higher migrant abundance but lower migrant density than habitats within nearby urban and agricultural landscapes.
520 $a Finally, in the context of hierarchy theory, I examined the influence of landscape ecological and behavioral processes on bird density during migratory stopover. Migrant abundance did not vary across landscapes that differed considerably in the amount of habitat available for stopover. As a result, smaller, more isolated patches held higher densities of birds. Spatial models of migrant habitat selection based on migrant proximity to a patch explained nearly as much variance in the number of migrants occupying patches (R<super>2</super> = 0.88) as selection models based on migrant interception of patches during flight (R<super>2</super> = 0.90). Because migrant densities in specific patches were the consequence of biological processes operating at larger spatial scales, sound conservation strategies for migrating landbirds should consider the landscape context of stopover habitats that are potential targets for preservation.
590 $a School code: 0090.
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650 4 $a Environmental Sciences. $3 676987
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650 4 $a Physics, Atmospheric Science. $3 1019431
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791 $a Ph.D.
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