کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6381913 1625931 2016 28 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Does nutrient enrichment compensate fungicide effects on litter decomposition and decomposer communities in streams?
ترجمه فارسی عنوان
آیا غنی سازی مواد مغذی اثرات قارچ کش بر تجزیه بستر و جوامع تجزیه کننده را در جریان جبران می کند؟
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم آبزیان
چکیده انگلیسی
Nutrient and pesticide pollution are widespread agricultural stressors. Fungicides may affect freshwater fungi, which play an important role in litter decomposition (LD), whereas moderate nutrient enrichment can stimulate LD. We examined potential interaction effects of nutrients and fungicides on decomposer communities and LD in a 14-day two-factorial (fungicide and nutrient treatments) mesocosm experiment. Fungicide exposure was limited to 4 days to simulate episodic contamination. Only the microbial community responded significantly to the experimental factors, though non-significant increases >20% were found for invertebrate decomposer weight gain and LD under high-nutrient conditions. Fungal community structure responded more strongly to fungicides than sporulation. Sporulation responded strongest to nutrients. Bacterial community structure was affected by both factors, although only nutrients influenced bacterial density. Our results suggest effects from fungicides at field-relevant levels on the microbial community. Whether these changes propagate to invertebrate communities and LD remains unclear and should be analysed under longer and recurrent fungicide exposure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquatic Toxicology - Volume 174, May 2016, Pages 169-178
نویسندگان
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