Ecology Of The Northern Goshawk In The Sierra Nevada California
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Ecology Of The Northern Goshawk In The Sierra Nevada California
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Author : John Joseph Keane
language : en
Publisher:
Release Date : 1999
Ecology Of The Northern Goshawk In The Sierra Nevada California written by John Joseph Keane and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Goshawk categories.
This dissertation describes the migration status, annual home ranges, nest-site habitat characteristics, and the association of biotic and abiotic factors with annual variation in reproduction of northern goshawks (Accipiter gentilis) in the Lake Tahoe region of the Sierra Nevada, California, during 1991-1995. Northern goshawk reproduction was greatest in years with abundant late-winter/early-spring Douglas squirrel populations (Tamiasciurus douglasii), following high cone crop production the previous autumn, and mild late-winter/early-spring temperatures. These results are consistent with the prediction that carnivorous bird species exhibit an increased demand energetic strategy and require increased energy prior to breeding in order to successfully reproduce. Northern goshawks are year round residents in the study area. Breeding period home ranges (95% adaptive kernel estimates) based on radio-telemetry were 2016 ha (sd = 1690) for females and 2698 ha (sd = 1043) for males. Nonbreeding period home ranges were 5555 ha (sd = 3289) for females and 9379 ha (sd = 6821) for males. Home ranges did not differ between sex during either the breeding or nonbreeding periods. Nonbreeding period home ranges were significantly larger versus the breeding period for both males and females. Northern goshawk nest-sites had significantly greater canopy cover (>5m height), live trees in the>60-100 cm and>100 cm diameter-at-breast-height (dbh) classes, and dead trees in the>60-100 cm dbh class. Correspondingly, random sample points had significantly greater herbaceous, rock, and shrub/sapling cover, and live trees in the 5-30 cm dbh class compared to nest sites. Logistic regression analysis indicated that canopy cover, live trees>100 cm dbh, and shrub/sapling cover were the best predictors of northern goshawk nest-site habitat. -- Adapted from abstract.
The Goshawk
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Author : Robert Kenward
language : en
Publisher: A&C Black
Release Date : 2010-01-30
The Goshawk written by Robert Kenward and has been published by A&C Black this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-01-30 with Nature categories.
A large and spectacular bird of prey, the Goshawk lives in boreal forests throughout the Northern hemisphere. The Goshawk is an authoritative yet highly readable monograph of the species. A powerful hunter of large birds and woodland mammals, it was persecuted for many years by game keepers to the point of extinction in the UK. However, escaped falconry birds led to the establishment of a new population in the 1960s, though the species remains rare and elusive - birders need a combination of hard work and a little luck to see this magnificent raptor. The Goshawk includes chapters on nomenclature, races and morphs, biometrics, nesting, incubation and chick-rearing, migration, feeding ecology, population dynamics, and conservation, punctuated throughout with illuminating tales from author Robert Kenward's extensive field research. The book is packed with illustrations, figures and maps, and contains a selection of the author's superb photographs of the birds. The product of almost 30 years work, this title is a classic Poyser monograph; birders will enjoy the fascinating insights into the biology of the bird, while academics will appreciate the book's comprehensive literature review.
Northern Goshawk Inventory And Monitoring Technical Guide Gen Tech Report Wo 71 August 2006
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Author :
language : en
Publisher:
Release Date : 2008
Northern Goshawk Inventory And Monitoring Technical Guide Gen Tech Report Wo 71 August 2006 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Sierra Nevada Forest Plan Amendment
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Author :
language : en
Publisher:
Release Date : 2001
Sierra Nevada Forest Plan Amendment written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Forest ecology categories.
Map packet : Modified Alternative 8 -- Series normalized Sierra Nevada Ecosystem Project late seral old growth ranks by forest type -- Herger-Feinstein Quincy Library Group land allocations.
Sierra Nevada Forest Plan Amendment Appendices
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Author :
language : en
Publisher:
Release Date : 2001
Sierra Nevada Forest Plan Amendment Appendices written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Forest ecology categories.
Map packet : Modified Alternative 8 -- Series normalized Sierra Nevada Ecosystem Project late seral old growth ranks by forest type -- Herger-Feinstein Quincy Library Group land allocations.
General Technical Report Wo
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Author :
language : en
Publisher:
Release Date : 1977
General Technical Report Wo written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Forests and forestry categories.
The Northern Goshawk
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Author : Thomas Bosakowski
language : en
Publisher: Surrey, B.C. : Hancock House
Release Date : 1999
The Northern Goshawk written by Thomas Bosakowski and has been published by Surrey, B.C. : Hancock House this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Nature categories.
The northern goshawk is one of the principal members of the forest raptor community that I investigated during graduate studies in the northeastern United States. As a wildlife biologist for Beak Consultants, I also conducted surveys, research, and GIS-habitat modeling on goshawks in the Pacific Northwest. In addition to that work, another part of my job was also to provide expertise on goshawk issues and remain current with the scientific literature on goshawks. After amassing a wealth of information, data, and field experience, it seemed like a natural step to compile this knowledge into a single handy source or reference book for people keenly interested in North American goshawks or raptors in general. While there have been several recent reviews on goshawk biology, I think that this book presents a unique perspective of experience gained from a biologist who has studied goshawks from coast to coast. In addition, one of my strengths as a scientist has been my ability to see the big picture and not get muddled in lengthy debate over minor details. Thus, I feel that this book presents a practical, logical, and holistic approach to the study and conservation of goshawks in North America. More than simply provide another review, I hope that I have synthesized the most critical elements of life history and scientific analyses into a thesis which provides a complete and comprehensive understanding of the goshawk.
Lake Tahoe Watershed Assessment Appendixes
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Author :
language : en
Publisher:
Release Date : 2000
Lake Tahoe Watershed Assessment Appendixes written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Tahoe, Lake, Watershed (Calif. and Nev.) categories.
Stanislaus National Forest N F Motorized Travel Management
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Author :
language : en
Publisher:
Release Date : 2009
Stanislaus National Forest N F Motorized Travel Management written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Yosemite National Park N P Yosemite Institute Environmental Education Campus
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Author :
language : en
Publisher:
Release Date : 2010
Yosemite National Park N P Yosemite Institute Environmental Education Campus written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.