کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8871694 1622709 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Variation in benthic metabolism and nitrogen cycling across clam aquaculture sites
ترجمه فارسی عنوان
تنوع در متابولیسم بتوز و نیتروژن دوچرخه سواری در سرتاسر مناطق آبزی پروری
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
چکیده انگلیسی
As bivalve aquaculture expands globally, an understanding of how it alters nitrogen is important to minimize impacts. This study investigated nitrogen cycling associated with clam aquaculture in the Sacca di Goro, Italy (Ruditapes philipinarum) and the Eastern Shore, USA (Mercenaria mercenaria). Ammonium and dissolved oxygen fluxes were positively correlated with clam biomass; R. philippinarum consumed ~ 6 times more oxygen and excreted ~ 5 times more NH4+ than M. mercenaria. There was no direct effect of clams on denitrification or dissimilatory nitrate reduction to ammonium (DNRA); rather, nitrate availability controlled the competition between these microbial pathways. Highest denitrification rates were measured at sites where both water column nitrate and nitrification were elevated due to high densities of a burrowing amphipod (Corophium sp.). DNRA exceeded denitrification where water column nitrate was low and nitrification was suppressed in highly reduced sediment, potentially due to low hydrologic flow and high clam densities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 127, February 2018, Pages 524-535
نویسندگان
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