کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6316485 1619170 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Responses of primary production, leaf litter decomposition and associated communities to stream eutrophication
ترجمه فارسی عنوان
پاسخ تولید اولیه، تجزیه بستر برگ و جوامع مرتبط با جریان آبگیری
کلمات کلیدی
قارچ، بی مهرگان، پریفیتون، جریانها، مدل تقسیم سود،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی
We assessed the eutrophication effects on leaf litter decomposition and primary production, and on periphytic algae, fungi and invertebrates. According to the subsidy-stress model, we expected that when algae and decomposers were nutrient limited, their activity and diversity would increase at moderate levels of nutrient enrichment, but decrease at high levels of nutrients, because eutrophication would lead to the presence of other stressors and overwhelm the subsidy effect. Chestnut leaves (Castanea sativa Mill) were enclosed in mesh bags and immersed in five streams of the Ave River basin (northwest Portugal) to assess leaf decomposition and colonization by invertebrates and fungi. In parallel, polyethylene slides were attached to the mesh bags to allow colonization by algae and to assess primary production. Communities of periphytic algae and decomposers discriminated the streams according to the trophic state. Primary production decomposition and biodiversity were lower in streams at both ends of the trophic gradient.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 202, July 2015, Pages 32-40
نویسندگان
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