000183806 001__ 183806
000183806 005__ 20170828002631.0
000183806 037__ $$a641-2016-43706
000183806 041__ $$aen_US
000183806 245__ $$aManagement of a Multiple Cohort Fishery: The Hard Clam in Great South Bay
000183806 260__ $$c1981-02
000183806 269__ $$a1981-02
000183806 300__ $$a27
000183806 336__ $$aWorking or Discussion Paper
000183806 490__ $$a81-3
000183806 520__ $$aBioeconomics to date has focused almost exclusively on lumped parameter models where the resource is described by a single state variable defined as biomass.  While such models are convenient mathematically they may be inappropriate in fisheries where recruitment and fecundity are dependent on the age structure of the resource.  This paper develops a reasonably general multiple cohort model and derives conditions for optimal harvest and age structure based on a discrete time control problem which maximizes the present value of net revenues subject to recruitment and spawning constraints.  The model is applied to the hard clam resource in Great south Bay which is located on Ling Island, New York  The steady state optimum calls for exclusive harvesting of the younger, ( and more valuable), "littleneck" cohorts; leaving the older, (and less valuable), "cherrystone" and "chowder" cohorts to specialize in regeneration.
000183806 542__ $$fLicense granted by Allison Hasslen (hassl020@umn.edu) on 2014-09-10T15:57:34Z (GMT):

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000183806 650__ $$aDemand and Price Analysis
000183806 650__ $$aEnvironmental Economics and Policy
000183806 650__ $$aLivestock Production/Industries
000183806 700__ $$aConrad, Jon M.
000183806 8564_ $$s1186458$$uhttp://ageconsearch.umn.edu/record/183806/files/Cornell-Dyson-sp8103.pdf
000183806 887__ $$ahttp://purl.umn.edu/183806
000183806 909CO $$ooai:ageconsearch.umn.edu:183806$$qGLOBAL_SET
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  Previous issue date: 1981-02
000183806 982__ $$gCornell University>Department of Applied Economics and Management>Staff Papers
000183806 980__ $$a641