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Improved fisheries management through life stage monitoring: The case for the southern Distinct Population Segment of North American green sturgeon and the Sacramento-San Joaquin River white sturgeon
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2017
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[PDF-1.53 MB]
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Description:"This conceptual model was compiled to support the development of monitoring studies and plans associated with management and recovery of sturgeon species in the San Francisco Estuary (SFE) watershed. Multiple life stages of the southern Distinct Population Segment (sDPS) of North American green sturgeon (Acipenser medirostris) and the Sacramento-San Joaquin River white sturgeon (A. transmontanus) are endemic to the SFE watershed. Potential increases in consecutive recruitment failures in SFE sturgeon raise concern about the resilience of sDPS green sturgeon and the sustainability of a harvestable white sturgeon stock. Fundamental sturgeon demographic measures are lacking in the existing monitoring and analytical framework. As a result, managers are unable to determine specific causes of poor recruitment, accurately track green sturgeon listing status under the Federal Endangered Species Act, or measure sturgeon population responses to management of water resources and/or harvest regulations. Here, we developed conceptual models for SFE sturgeon and identified 15 monitoring recommendations that would potentially test 41 hypotheses in 7 core areas of sturgeon management. Implementation of these monitoring recommendations would refine our understanding of the key factors influencing SFE sturgeon populations and improve outcomes for California's sturgeon through informed management"--Preface. [doi:10.7289/V5/TM-SWFSC-588(http://doi.org/10.7289/V5/TM-SWFSC-588)]
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Content Notes:Joseph Heublein, Russ Bellmer, Robert D. Chase, Phaedra Doukakis, Marty Gingras, Douglas Hampton, Joshua A. Israel, Zachary J. Jackson, Rachel C. Johnson, Olaf P. Langness, Sean Luis, Ethan Mora, Mary L. Moser, Larissa Rohrbach, Alicia M. Seesholtz, and Ted Sommer.
"September 2017."
Includes bibliographical references.
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Rights Information:Public Domain
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Compliance:Submitted
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