دانلود مقاله ISI انگلیسی شماره 15919
ترجمه فارسی عنوان مقاله

اثر متقابل شکار غیر قانونی و سیاست مدیریت تحت تاثیر ذخایر دریایی به عنوان ابزار حفاظت

عنوان انگلیسی
Interactions between poaching and management policy affect marine reserves as conservation tools
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
15919 2008 11 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Biological Conservation, , Volume 141, Issue 2, February 2008, Pages 506-516

ترجمه کلمات کلیدی
ذخایر دریایی - عدم انطباق - شکار غیر قانونی - مدیریت شیلات -
کلمات کلیدی انگلیسی
Marine reserves, Noncompliance, Poaching, Fisheries management,
پیش نمایش مقاله
پیش نمایش مقاله  اثر متقابل شکار غیر قانونی و سیاست مدیریت تحت تاثیر ذخایر دریایی به عنوان ابزار حفاظت

To explore the effects of poaching within marine reserve boundaries under three different management policies this analysis uses a simple age-structured reserve model based on yield maximization or reproductive thresholds of Black rockfish (Sebastes melanops). Departures from the traditional assumptions of full compliance to reserve boundaries alter the conclusions of prior modeling work that demonstrate yield equivalence to no-reserve effort control management and augmented reproductive benefits when small reserves are implemented. By degrading the recruitment subsidization effect to nonreserve areas from protected reserve populations, poaching resulted in negative externalities for compliant fishermen in open areas in terms of yield and degraded the reproductive output and age-structure of the system. All three policies required effort reduction in open areas as a response to poaching in reserves. The strength of the impacts from poaching varied with policy choice and harvest intensity in the reserve, where at the highest level of poaching modeled here (15% annual exploitation rate of the vulnerable reserve population) biological and fishery benefits of implementing reserves were totally negated. Under the assumptions of this model, a policy managing for a reproductive threshold that excludes the reserve population is the precautionary choice if poaching is likely. The results of this exercise emphasize the importance of garnering compliance to reserve boundaries from resource-users for spatial closures to be successful ocean management tools.