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Using Length-Based Spawning Potentia...

Coscino, Connor L.

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Using Length-Based Spawning Potential Ratio (LBSPR) for Assessment and Minimum Size Limit Evaluation in California Recreational Fisheries.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Using Length-Based Spawning Potential Ratio (LBSPR) for Assessment and Minimum Size Limit Evaluation in California Recreational Fisheries./
Author:	Coscino, Connor L.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
Description:	70 p.
Notes:	Source: Masters Abstracts International, Volume: 84-10.
Contained By:	Masters Abstracts International84-10.
Subject:	Biological oceanography. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30309255
ISBN:	9798379407261

Using Length-Based Spawning Potential Ratio (LBSPR) for Assessment and Minimum Size Limit Evaluation in California Recreational Fisheries.
Coscino, Connor L.

Using Length-Based Spawning Potential Ratio (LBSPR) for Assessment and Minimum Size Limit Evaluation in California Recreational Fisheries. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 70 p.

Source: Masters Abstracts International, Volume: 84-10.

Thesis (M.S.)--University of California, San Diego, 2023.

This item must not be sold to any third party vendors.

Fisheries size limits are a fundamental harvest control rule intended to support sustainability, usually by allowing fish to reach maturity and reproduce before harvest. California relies on size limits for the management of some, but not all, recreational fisheries. For those with size limits, it is unclear whether existing control rules are sufficient to achieve sustainable levels of spawning potential. For those without size limits, the potential benefits of instituting length-based control rules for improving harvest efficiency have not been assessed. In this study, we used Length-Based Spawning Potential Ratio (LBSPR) to conduct a data-limited assessment of equilibrium stock status for a subset of high value recreational fishes and make inferences about the cumulative performance of existing management regulations. Using these model products, we then simulated stock status under alternative size limit scenarios in order to estimate the benefit of new or alternative minimum size limits on a species-by-species basis. To validate our methodology for assessing alternative size limit regulations, we leveraged data on two species of Paralabrax from before and after a recent increase in the recreational minimum size limit regulations. Our findings provide valuable insight on the status of five recreationally important yet unassessed fisheries stocks in California and identify situations where LBSPR may be successfully applied and where it may fail. Furthermore, we developed and validated a procedure for evaluating alternative minimum size limit scenarios that can easily be applied to other fisheries worldwide.

ISBN: 9798379407261Subjects--Topical Terms:

2122748
Biological oceanography.
Subjects--Index Terms:

Fisheries

Using Length-Based Spawning Potential Ratio (LBSPR) for Assessment and Minimum Size Limit Evaluation in California Recreational Fisheries.
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100 1 $a Coscino, Connor L. $3 3762730
245 1 0 $a Using Length-Based Spawning Potential Ratio (LBSPR) for Assessment and Minimum Size Limit Evaluation in California Recreational Fisheries.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 70 p.
500 $a Source: Masters Abstracts International, Volume: 84-10.
500 $a Advisor: Semmens, Brice X.
502 $a Thesis (M.S.)--University of California, San Diego, 2023.
506 $a This item must not be sold to any third party vendors.
520 $a Fisheries size limits are a fundamental harvest control rule intended to support sustainability, usually by allowing fish to reach maturity and reproduce before harvest. California relies on size limits for the management of some, but not all, recreational fisheries. For those with size limits, it is unclear whether existing control rules are sufficient to achieve sustainable levels of spawning potential. For those without size limits, the potential benefits of instituting length-based control rules for improving harvest efficiency have not been assessed. In this study, we used Length-Based Spawning Potential Ratio (LBSPR) to conduct a data-limited assessment of equilibrium stock status for a subset of high value recreational fishes and make inferences about the cumulative performance of existing management regulations. Using these model products, we then simulated stock status under alternative size limit scenarios in order to estimate the benefit of new or alternative minimum size limits on a species-by-species basis. To validate our methodology for assessing alternative size limit regulations, we leveraged data on two species of Paralabrax from before and after a recent increase in the recreational minimum size limit regulations. Our findings provide valuable insight on the status of five recreationally important yet unassessed fisheries stocks in California and identify situations where LBSPR may be successfully applied and where it may fail. Furthermore, we developed and validated a procedure for evaluating alternative minimum size limit scenarios that can easily be applied to other fisheries worldwide.
590 $a School code: 0033.
650 4 $a Biological oceanography. $3 2122748
650 4 $a Aquatic sciences. $3 3174300
653 $a Fisheries
653 $a Recreational fisheries
653 $a Spawning potential ratio
653 $a California fisheries
653 $a Size limits
690 $a 0416
690 $a 0792
710 2 $a University of California, San Diego. $b Scripps Institution of Oceanography. $3 3543449
773 0 $t Masters Abstracts International $g 84-10.
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791 $a M.S.
792 $a 2023
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30309255