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Die Another Day: Growth Model Reveal...

Schroeder, Leslie Ann.

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Die Another Day: Growth Model Reveals High Natural Survival Rates in Loggerhead Sea Turtles.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Die Another Day: Growth Model Reveals High Natural Survival Rates in Loggerhead Sea Turtles./
Author:	Schroeder, Leslie Ann.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	27 p.
Notes:	Source: Masters Abstracts International, Volume: 57-01.
Contained By:	Masters Abstracts International57-01(E).
Subject:	Conservation biology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10615947
ISBN:	9780355328684

Die Another Day: Growth Model Reveals High Natural Survival Rates in Loggerhead Sea Turtles.
Schroeder, Leslie Ann.

Die Another Day: Growth Model Reveals High Natural Survival Rates in Loggerhead Sea Turtles. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 27 p.

Source: Masters Abstracts International, Volume: 57-01.

Thesis (M.S.)--University of Minnesota, 2017.

Accurate survival estimates are essential to sea turtle conservation but difficult to estimate due to anthropogenic mortality and confounding factors such as tag loss and emigration. The Lester Growth Model allows for the estimation of sex-specific adult natural survival rates (the rate that a population would experience independent of human influence) from length-at-age and maturity data. I applied this model to individual loggerheads of the Northwest Atlantic subpopulation. Both male and female annual natural survival rates were estimated to be 96--97%; ~0.14 higher than published total survival values. This result was corroborated by a population model designed to estimate a range of possible adult survival rates. These natural survival rates, in conjunction with published rates, allow for the estimation of anthropogenic mortality and assessment of the impact of confounding factors on mark-recapture studies. It is likely that this technique can be leveraged for other loggerhead populations and sea turtle species.

ISBN: 9780355328684Subjects--Topical Terms:

535736
Conservation biology.

Die Another Day: Growth Model Reveals High Natural Survival Rates in Loggerhead Sea Turtles.
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245 1 0 $a Die Another Day: Growth Model Reveals High Natural Survival Rates in Loggerhead Sea Turtles.
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300 $a 27 p.
500 $a Source: Masters Abstracts International, Volume: 57-01.
500 $a Adviser: Paul A. Venturelli.
502 $a Thesis (M.S.)--University of Minnesota, 2017.
520 $a Accurate survival estimates are essential to sea turtle conservation but difficult to estimate due to anthropogenic mortality and confounding factors such as tag loss and emigration. The Lester Growth Model allows for the estimation of sex-specific adult natural survival rates (the rate that a population would experience independent of human influence) from length-at-age and maturity data. I applied this model to individual loggerheads of the Northwest Atlantic subpopulation. Both male and female annual natural survival rates were estimated to be 96--97%; ~0.14 higher than published total survival values. This result was corroborated by a population model designed to estimate a range of possible adult survival rates. These natural survival rates, in conjunction with published rates, allow for the estimation of anthropogenic mortality and assessment of the impact of confounding factors on mark-recapture studies. It is likely that this technique can be leveraged for other loggerhead populations and sea turtle species.
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