کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4385015 1617903 2016 10 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Conservation implications of cascading effects among groups of organisms: The alien tree Robinia pseudacacia in the Czech Republic as a case study
ترجمه فارسی عنوان
پیامدهای حفاظت اثرات آبشاری در میان گروهی از ارگانیسم‌ها: درخت بیگانه آکاسیا در جمهوری چک به عنوان یک مطالعه موردی
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کلمات کلیدی
جوامع آنفلوانزای مرغی؛ تو رفتگی محیط زیست؛ تخصص زیستگاه؛ گونه های عجیب و غریب؛ تجاوز گونه های گیاهی؛ همگن زنده
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی


• We surveyed birds and their insect food in invaded and native forest stands.
• Specialists were more species-rich in native stands, generalists showed the opposite.
• Species richness of specialists was limited solely by the number of moth species.
• Species richness of generalists was limited solely by the habitat structure.
• These two different mechanisms may drive biotic homogenization of local communities.

Invasions of non-native plants often result in impoverished local communities; however, their cascading effects along food chain remain unknown. Here we investigated how the alteration of food resources and habitat structure due to the invasion of an alien tree affects the species richness of habitat specialist and generalist birds. During 2014, we sampled forest stands of the invasive Robinia pseudacacia and control stands of native trees in the Czech Republic (central Europe). Specifically, we performed intensive breeding bird counts and assessed moth diversity as a key food resource for breeding birds and, described the habitat structure of sampled stands. Compared to native tree stands, stands of R. pseudacacia had a lower species richness of habitat specialist birds, a higher species richness of habitat generalist birds, a lower diversity of moths, a less continuous canopy and a more developed shrub layer. Then we related bird species richness to moth diversity and descriptors of habitat structure. Moth diversity was the only variable significantly related to the species richness of habitat specialist birds, while the species richness of habitat generalist birds was related solely to the local habitat structure. Specialists were thus limited by a less diverse food supply in the invaded stands, most likely due to the absence of some arthropod species. In contrast, generalists were ecologically more flexible and exploited new breeding opportunities created by a shrub layer in the invaded stands. Our study thus provides evidence that impacts of an invasive tree scale up across trophic levels.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biological Conservation - Volume 198, June 2016, Pages 50–59
نویسندگان
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