کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8886386 1627549 2018 61 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Indicators of nutrient pollution in Long Island, New York, estuarine environments
ترجمه فارسی عنوان
شاخص های آلودگی مواد مغذی در لانگ آیلند، نیویورک، محیط های
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
چکیده انگلیسی
Roughly eight million people live on Long Island, including Brooklyn and Queens, and despite improvements in wastewater treatment, nearly all its coastal waterbodies are impaired by excessive nitrogen. We used nutrient stoichiometry and stable isotope ratios in estuarine biota and soils to identify water pollution hot spots and compare among potential indicators. We found strong gradients in δ15N values, which were correlated with watershed land cover, population density, and wastewater discharges. Weaker correlations were found for δ13C values and nutrient stoichiometric ratios. Structural equation modeling identified contrasts between western Long Island, where δ15N values depended on watershed population density, and eastern Long Island where δ15N values reflected agriculture and sewage discharges. These results illustrate the use of stable isotopes as water quality indicators, and establish a baseline against which the efficacy of strategies to reduce nutrients can be measured.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Environmental Research - Volume 134, March 2018, Pages 109-120
نویسندگان
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