کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8845984 1617363 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Connectivity among wetlands matters for vulnerable amphibian populations in wetlandscapes
ترجمه فارسی عنوان
اتصال در میان تالاب ها برای جمعیت های دوزیستان آسیب پذیر در تالاب ها اهمیت دارد
کلمات کلیدی
اتصال شبکه زیست محیطی، پیکربندی تالاب، مدل دوزیستان، نظریه گراف، دینامیک جمعیت،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
Wetlands have been degraded and destroyed, resulting in the decline of many wetland-dependent species populations. Many conservation efforts are based on protection of individual wetlands; however, fluxes of energy, materials and organisms between wetlands create important structural and functional connections upon which several species depend. We investigated the role of individual wetlands within a wetlandscape in sustaining an amphibian population. Wetlandscapes were represented as networks, where nodes were wetlands and links were flows of organisms described by an amphibian population model. Relationships between a wetland's connectivity to the other wetlands and the abundance of amphibians under different wetland management strategies were examined. The first finding was that wetlands within a network can be classified into sinks (where local mortality exceeds birth rate), sources (where local birth rate exceeds mortality), and pseudo-sinks (where excessive immigration maintains the population above the carrying capacity). These three wetland classes have low, medium, and high Indegree (a parameter reflecting a wetland's connectivity), respectively. The second finding was that management interventions in wetlands have different consequences according to the wetland's Indegree: wetland removal has the worst impact on amphibian populations if the wetland is a source, and wetland restoration has the best impact if the wetland is a pseudo-sink. These findings provide support for policies that managing wetlands not as independent objects but as integral parts of the wetlandscape.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Modelling - Volume 384, 24 September 2018, Pages 119-127
نویسندگان
, , , , ,