کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6318729 1619193 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biodegradation of carbamate pesticides by natural river biofilms in different seasons and their effects on biofilm community structure
ترجمه فارسی عنوان
تجزیه بیولوژیک آفت کش ها به وسیله بیوفیلم های رودخانه طبیعی در فصول مختلف و اثرات آنها بر ساختار جامعه بیوفیلم
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی
This study investigated the ability of natural river biofilms from different seasons to degrade the carbamate pesticides methomyl, carbaryl and carbofuran in single and multiple pesticide systems, and the effects of these pesticides on algal and bacterial communities within biofilms. Spring biofilms had the lowest biomass of algae and bacteria but showed the highest methomyl degradation (>99%) and dissipation rates, suggesting that they might contain microorganisms with high methomyl degradation abilities. Degradation of carbofuran (54.1-59.5%) by biofilms in four seasons was similar, but low degradation of carbaryl (0-27.5%) was observed. The coexistence of other pesticides was found to cause certain effects on pesticide degradation and primarily resulted in lower diversity of diatoms and bacteria than when using a single pesticide. The tolerant diatoms and bacteria potentially having the ability to degrade test pesticides were identified. River biofilms could be suitable biomaterials or used to isolate degraders for bioremediating pesticide-contaminated water.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 179, August 2013, Pages 95-104
نویسندگان
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