کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8849107 | 1618515 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The relative importance of anammox and denitrification to total N2 production in Lake Erie
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم زمین و سیاره ای (عمومی)
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چکیده انگلیسی
Production of dinitrogen gas via microbially mediated anaerobic ammonium oxidation (anammox) and denitrification plays an important role in removal of fixed N from aquatic ecosystems. Here, we investigated anammox and denitrification potentials via the 15N isotope pairing technique in the helium flushed bottom water (~0.2Â m above the sediment) of Sandusky Bay, Sandusky Subbasin, and Central Basin in Lake Erie in three consecutive summers (2010â2012). Potential rates of anammox (0-922Â nM/day) and denitrification (1 to 355Â nM/day) varied greatly among sampling sites during the 3Â years we studied. The relative importance of anammox to total N2 production potentially ranged from 0 to 100% and varied temporally and spatially. Our study represents one of the first efforts to measure potential activities of both anammox and denitrification in the water column of Lake Erie and our results indicate the Central Basin of Lake Erie is a hot spot for N removal through anammox and denitrification activities. Further, our data indicate that the water column, specifically hypolimnion, and the surface sediment of the Lake Erie Central Basin are comparatively important for microbially mediated N removal.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Great Lakes Research - Volume 44, Issue 3, June 2018, Pages 428-435
Journal: Journal of Great Lakes Research - Volume 44, Issue 3, June 2018, Pages 428-435
نویسندگان
Xinxin Lu, Darren L. Bade, Laura G. Leff, Xiaozhen Mou,