کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5048545 1476337 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A Decision-theory Approach to Cost-effective Population Supplementation for Imperiled Species
ترجمه فارسی عنوان
رویکرد تئوری تصمیم گیری برای تکمیل جمعیت مقرون به صرفه برای گونه های مهاجم
کلمات کلیدی
بازیابی گونه، تجزیه و تحلیل تصمیم گیری، مکمل جمعیت، هزینه های بازیابی، کاهش دوزیستان،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی


- Decision analysis provides a framework for leveraging limited data to support choices between recovery strategies.
- Quantifying alternative supplementation strategies highlights nonlinearities in benefit-cost ratios for recovering species.
- Supplementation with captive bred larvae cost-effectively reduces extinction risk compared to head-starting wild embryos.

Despite decades of managing endangered species, few have been successfully recovered. One option to reduce this gap is to use decision analysis to weigh alternative recovery actions. Using decision analysis, we evaluated tradeoffs between recovery actions to reduce extinction risk and financial cost for the imperiled Oregon spotted frog (Rana pretiosa). We simulated population supplementation via captive breeding or head-starting, and releasing offspring into the wild as larvae or young of the year. We ranked the efficacy of recovery scenarios, represented by a culmination of a series of decision points, to reduce the 10-year extinction risk below 10% while minimizing financial costs. We explored how rankings varied with respect to the extinction risk target, the endangered population size, and the reproductive output captive females. Our top-ranked pathway was to supplement with captive bred larvae, resulting in a 3% reduction in extinction risk for every $100,000 spent. In general, supplementing with captive bred larvae resulted in the biggest reduction in extinction risk per dollar invested. Additionally, we found that increasing spending does not always result in a proportional reduction in extinction risk. These results link quantitative and applied conservation by considering the biological and economic efficacy to recover endangered species.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Economics - Volume 142, December 2017, Pages 194-202
نویسندگان
, , ,