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Habitat, Connectivity, and Gene Flow of Mexican Spotted Owl in Southwestern Forests
Başlık:
Habitat, Connectivity, and Gene Flow of Mexican Spotted Owl in Southwestern Forests
Yazar:
Wan, Ho Yi, author.
ISBN:
9780438014763
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (257 pages)
Genel Not:
Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
Advisors: Clare E. Aslan; Samuel A. Cushman Committee members: Peter Z. Fule; Joseph L. Ganey; Christina D. Vojta.
Özet:
The Mexican spotted owl (Strix occidentalix lucida ) has experienced population decline and has been listed as Threatened under the Endangered Species Act in 1995. The cause of its decline has traditionally been attributed to habitat loss and fragmentation as a result of human activities, including even-aged timber management and urban development. Over two decades have passed since the listing, with new information acquired and protection measures being in place to maximize the persistence potential of the species. Yet, the future of the species remains unclear as new threats emerge to negatively affect the species populations. In the southwestern United States, wildfires have increased in size and severity in many forests, and are expected to continue to increase with projected warmer and drier climate. The increased risk of large, high-severity wildfires has raised concern about its effects on the Mexican spotted owl, which typically nests in dense and old-growth forests that are prone fires. This dissertation contains 5 chapters that review current literature on threats to the spotted owl, evaluate habitat suitability, connectivity, and gene flow of the spotted owl under current landscape condition, and evaluate fire effects on the habitat of the spotted owl. Results from my dissertation provide much needed information for managing the Mexican spotted owl. The modeling and analytical approaches demonstrated herein lay the groundwork for quantitative assessments in improving the understanding of impacts of emerging threats on the threatened species.
Notlar:
School code: 0391
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(679349.1) | 679349-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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