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Assessment of Sea-Turtle Status and Trends
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All six species of sea turtles found in U.S. waters are listed as endangered or threatened, but the exact population sizes of these species are unknown due to a lack of key information regarding birth and survival rates. The U.S. Endangered Species Act prohibits the hunting of sea turtles and reduces incidental losses from activities such as shrimp trawling and development on beaches used for nesting. However, current monitoring does not provide enough information on sea turtle populations to evaluate the effectiveness of these protective measures. Sea Turtle Status and Trends reviews current methods for assessing sea turtle populations and finds that although counts of sea turtles are essential, more detailed information on sea turtle biology, such as survival rates and breeding patterns, is needed to predict and understand changes in populations in order to develop successful management and conservation plans. Table of ContentsFront MatterSummary1 Introduction2 Units of Assessment3 Conceptual Model of Sea-Turtle Abundance and Demography4 Abundance and Trends5 Demographic Rates6 Integrating Demographic Information with Abundance Estimates7 Cross-Cutting Issues:Data, Education, Permits, and Coordination8 Conclusions and RecommendationsReferencesA Brief History of Alternative Genetic MarkersB Population-Structure ModelsC Committee and Staff Biographies
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All six species of sea turtles found in U.S. waters are listed as endangered or threatened, but the exact population sizes of these species are unknown due to a lack of key information regarding birth and survival rates. The U.S. Endangered Species Act prohibits the hunting of sea turtles and reduces incidental losses from activities such as shrimp trawling and development on beaches used for nesting. However, current monitoring does not provide enough information on sea turtle populations to evaluate the effectiveness of these protective measures. Sea Turtle Status and Trends reviews current methods for assessing sea turtle populations and finds that although counts of sea turtles are essential, more detailed information on sea turtle biology, such as survival rates and breeding patterns, is needed to predict and understand changes in populations in order to develop successful management and conservation plans. Table of ContentsFront MatterSummary1 Introduction2 Units of Assessment3 Conceptual Model of Sea-Turtle Abundance and Demography4 Abundance and Trends5 Demographic Rates6 Integrating Demographic Information with Abundance Estimates7 Cross-Cutting Issues:Data, Education, Permits, and Coordination8 Conclusions and RecommendationsReferencesA Brief History of Alternative Genetic MarkersB Population-Structure ModelsC Committee and Staff Biographies
Produktdetaljer
Sprog: Engelsk
Sider: 174
ISBN-13: 9780309152556
Indbinding: Paperback
Udgave:
ISBN-10: 0309152550
Udg. Dato: 7 okt 2010
Længde: 0mm
Bredde: 229mm
Højde: 152mm
Oplagsdato: 7 okt 2010
Forfatter(e) Committee on the Review of Sea-Turtle Population Assessment Methods, Ocean Studies Board, National Research Council, Division on Earth and Life Studies


Kategori Truede arter og artsudryddelse


Sprog Engelsk


Indbinding Paperback


Sider 174


Udgave


Længde 0mm


Bredde 229mm


Højde 152mm


Udg. Dato 7 okt 2010


Oplagsdato 7 okt 2010

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