کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8420316 1545894 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantitative description of respiration processes in meso-eutrophic and eutrophic freshwater environments
ترجمه فارسی عنوان
توصیفی کمی از فرآیند تنفس در محیط های آب شیرین مزوتراپی و اودروفیک
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیوتکنولوژی یا زیست‌فناوری
چکیده انگلیسی
We propose a modification of measurement methodology allowing the overall respiration rate (VResp) close to the in situ conditions; size of the labile, respirable organic matter pool (OMResp); and its turnover time (Tt) to be calculated. In addition to the respiration of dissolved substrates by free-living bacteria, the respiration of attached bacteria and other planktonic organisms is also taken into account. In case study we evaluated the modified, quantitative description of respiration processes in surface waters of lakes of different trophic status: mezzo-eutrophic and eutrophic. In both types of studied environments, VResp oscillated between 1.0 μmol C l−1 h−1 and 3.0 μmol C l−1 h−1, and the size of the OMResp pool varied from 39.3 μM C to 828.7 μM C. Despite of higher OMResp concentrations in eutrophic lakes, we found a lower susceptibility of OM to respiration processes in eutrophic than in meso-eutrophic lakes but similar VResp in both types of lakes. We conclude that the proposed method allows a fast quantitative description of labile organic matter utilization by aerobic aquatic microorganisms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Microbiological Methods - Volume 149, June 2018, Pages 1-8
نویسندگان
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