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Understanding the Impacts of Urbaniz...
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Gibbs, Andrew Daniel.
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Understanding the Impacts of Urbanization on the Avian Community of Portland Oregon and Evaluation of the Portland Oregon Backyard Habitat Certification Program.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Understanding the Impacts of Urbanization on the Avian Community of Portland Oregon and Evaluation of the Portland Oregon Backyard Habitat Certification Program./
作者:
Gibbs, Andrew Daniel.
出版者:
Ann Arbor : ProQuest Dissertations & Theses, : 2018,
面頁冊數:
174 p.
附註:
Source: Dissertations Abstracts International, Volume: 80-01, Section: B.
Contained By:
Dissertations Abstracts International80-01B.
標題:
Urban Forestry. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10784688
ISBN:
9780438145566
Understanding the Impacts of Urbanization on the Avian Community of Portland Oregon and Evaluation of the Portland Oregon Backyard Habitat Certification Program.
Gibbs, Andrew Daniel.
Understanding the Impacts of Urbanization on the Avian Community of Portland Oregon and Evaluation of the Portland Oregon Backyard Habitat Certification Program.
- Ann Arbor : ProQuest Dissertations & Theses, 2018 - 174 p.
Source: Dissertations Abstracts International, Volume: 80-01, Section: B.
Thesis (Ph.D.)--Portland State University, 2018.
This item must not be sold to any third party vendors.
Over fifty percent of humans live in cities. The environmental cost of this is massive, as is the potential for utilizing privately held yards as an integral part of conservation in urban areas. The Backyard Habitat Certification Program (BHCP) in Portland, Oregon, was established to reduce invasive plants, support wildlife, and promote conservation. The program involves > 3000 yards certified at three tiers. While onsite inspections are required to verify compliance, there has never been an assessment of the value of these yards to wildlife. In chapter 1 I examined the relationships between the urban landscape and bird distributions outside of yards. In chapter 2 I evaluated the ability of the program to separate yards by assessing differences in vegetation structure and composition. In chapter 3 I tested if avian abundance, richness and diversity in yards are a product of responses to yard or landscape vegetation structure. I collected avian data at 146 yards and 73 random locations in 2013 and 2014. I used public landscape data and collected yard data in the field. Avian abundance, richness, and diversity were affected negatively by urbanization (especially impervious surface) and population density, but positively by tree cover. The BHCP was effective at distinguishing platinum yards from others, but overlap was relatively high among gold, silver and uncertified yards. Avian abundance, richness and diversity within yards was less affected by yard vegetation than the structure of habitat in the surrounding landscape. Species responded individualistically to yard vegetation and the urban landscape, and response was a continuum of tolerance to urbanization. Ultimately, the ability of yards to support wildlife will depend on wide scale neighborhood participation.
ISBN: 9780438145566Subjects--Topical Terms:
3438187
Urban Forestry.
Understanding the Impacts of Urbanization on the Avian Community of Portland Oregon and Evaluation of the Portland Oregon Backyard Habitat Certification Program.
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Over fifty percent of humans live in cities. The environmental cost of this is massive, as is the potential for utilizing privately held yards as an integral part of conservation in urban areas. The Backyard Habitat Certification Program (BHCP) in Portland, Oregon, was established to reduce invasive plants, support wildlife, and promote conservation. The program involves > 3000 yards certified at three tiers. While onsite inspections are required to verify compliance, there has never been an assessment of the value of these yards to wildlife. In chapter 1 I examined the relationships between the urban landscape and bird distributions outside of yards. In chapter 2 I evaluated the ability of the program to separate yards by assessing differences in vegetation structure and composition. In chapter 3 I tested if avian abundance, richness and diversity in yards are a product of responses to yard or landscape vegetation structure. I collected avian data at 146 yards and 73 random locations in 2013 and 2014. I used public landscape data and collected yard data in the field. Avian abundance, richness, and diversity were affected negatively by urbanization (especially impervious surface) and population density, but positively by tree cover. The BHCP was effective at distinguishing platinum yards from others, but overlap was relatively high among gold, silver and uncertified yards. Avian abundance, richness and diversity within yards was less affected by yard vegetation than the structure of habitat in the surrounding landscape. Species responded individualistically to yard vegetation and the urban landscape, and response was a continuum of tolerance to urbanization. Ultimately, the ability of yards to support wildlife will depend on wide scale neighborhood participation.
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http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10784688
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