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Author: Teryl G. Grubb
Publisher:
ISBN:
Category : Bald eagle
Languages : en
Pages : 16
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Book Description
Bayesian inference facilitated structured interpretation of a nonreplicated, experience-based survey of potential nesting habitat for bald eagles (Haliaeetus leucocephalus) along the five Great Lakes shorelines. We developed a pattern recognition (PATREC) model of our aerial search image with six habitat attributes: (a) tree cover, (b) proximity and (c) type/amount of human disturbance, (d) potential foraging habitat/shoreline irregularity, and suitable trees for (e) perching and (f) nesting. Tree cover greater than 10 percent, human disturbance more than 0.8 km away, a ratio of total to linear shoreline distance greater than 2.0, and suitable perch and nest trees were prerequisite for good eagle habitat (having sufficient physical attributes for bald eagle nesting). The estimated probability of good habitat was high (96 percent) when all attributes were optimal, and nonexistent (0 percent) when none of the model attributes were present. Of the 117 active bald eagle nests along the Great Lakes shorelines in 1992, 82 percent were in habitat classified as good. While our PATREC model provides a method for consistent interpretation of subjective surveyor experience, it also facilitates future management of bald eagle nesting habitat along Great Lakes shorelines by providing insight into the number, type, and relative importance of key habitat attributes. This practical application of Bayesian inference demonstrates the technique's advantages for effectively incorporating available expertise, detailing model development processes, enabling exploratory simulations, and facilitating long-term ecosystem monitoring.
Author: Teryl G. Grubb
Publisher:
ISBN:
Category : Bald eagle
Languages : en
Pages : 16
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Book Description
Bayesian inference facilitated structured interpretation of a nonreplicated, experience-based survey of potential nesting habitat for bald eagles (Haliaeetus leucocephalus) along the five Great Lakes shorelines. We developed a pattern recognition (PATREC) model of our aerial search image with six habitat attributes: (a) tree cover, (b) proximity and (c) type/amount of human disturbance, (d) potential foraging habitat/shoreline irregularity, and suitable trees for (e) perching and (f) nesting. Tree cover greater than 10 percent, human disturbance more than 0.8 km away, a ratio of total to linear shoreline distance greater than 2.0, and suitable perch and nest trees were prerequisite for good eagle habitat (having sufficient physical attributes for bald eagle nesting). The estimated probability of good habitat was high (96 percent) when all attributes were optimal, and nonexistent (0 percent) when none of the model attributes were present. Of the 117 active bald eagle nests along the Great Lakes shorelines in 1992, 82 percent were in habitat classified as good. While our PATREC model provides a method for consistent interpretation of subjective surveyor experience, it also facilitates future management of bald eagle nesting habitat along Great Lakes shorelines by providing insight into the number, type, and relative importance of key habitat attributes. This practical application of Bayesian inference demonstrates the technique's advantages for effectively incorporating available expertise, detailing model development processes, enabling exploratory simulations, and facilitating long-term ecosystem monitoring.
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Category : Forests and forestry
Languages : en
Pages : 16
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1000
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Book Description
Author: Alison Laurie Neilson
Publisher:
ISBN:
Category : Bald eagle
Languages : en
Pages : 20
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Book Description
Heavy development in the Great Lakes area has diminished eagle nesting habitat and foraging opportunities. This document presents information on bald eagles and describes some of the challenges to bald eagle populations around the Great Lakes, including chemical contaminants in the aquatic food web. It outlines legislative protection and conservation strategies, and describes current conditions and nesting results for bald eagles.
Author: Teryl G. Grubb
Publisher:
ISBN:
Category : Biotic communities
Languages : en
Pages : 6
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Book Description
Author: Great Lakes Science Advisory Board. Biological Effects Subcommittee
Publisher: Windsor, Ont. : The Subcommittee
ISBN:
Category : Bald eagle
Languages : en
Pages : 36
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Book Description
Author: Philip F. Schempf
Publisher:
ISBN: 9780888396952
Category : Science
Languages : en
Pages : 0
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Book Description
An expansive collection of papers and articles from internationally recognized bald eagle experts. Presented is a complete portrait of the status and ecology of the bald eagle in Alaska.A collection of papers and articles from international bald eagle experts, which present a complete portrait of the status and ecology of the bald eagle in Alaska. Myriad topics include culture, biology, population history and status, conservation and management, the Alaskan habitat from the northern rainforest to the Aleutian Islands, attitudes from diverse groups from the Tlingit to bounty hunters, along with sound scientific data.
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ISBN:
Category : Astronautics in earth sciences
Languages : en
Pages : 910
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Book Description
Author: Anna Sher
Publisher: Oxford University Press
ISBN: 0197564372
Category : Biodiversity
Languages : en
Pages : 525
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Book Description
"An Introduction to Conservation Biology is well suited for a wide range of undergraduate courses, as both a primary text for conservation biology courses and a supplement for ecological and environmental science courses. This new edition focuses on engaging students through videos and activities, and includes new pedagogy to scaffold students' learning. Coverage of recent conservation biology events in the news-such as global climate change and sustainable development-keeps the content fresh and current"--
Author: Reed Harris
Publisher: CRC Press
ISBN: 0849388899
Category : Science
Languages : en
Pages : 242
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Book Description
As rising levels of mercury in the environment pose an increasing threat of toxicity to humans and wildlife, several laws already call for industries to reduce mercury emissions at the source. Ecosystem Responses to Mercury Contamination: Indicators of Change outlines the infrastructure and methods needed to measure, monitor, and regulate the conce