کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8884932 | 1626598 | 2018 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mussel farming impact on pelagic production and respiration rates in a coastal upwelling embayment (RÃa de Vigo, NW Spain)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
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چکیده انگلیسی
This paper provides the first diagnosis of the impact of mussel farming on the primary production (PP) and the metabolic balance in a coastal upwelling region (RÃa de Vigo). Measurements of size-fractionated PP and microbial plankton metabolism were performed outside (reference station; ReS) and inside the farming area (raft station; RaS). At ReS, integrated PP was higher during upwelling (1.05â¯Â±â¯0.45â¯gâ¯C mâ2 dâ1) with microphytoplankton dominating carbon fixation (74â¯Â±â¯14%). The significance of nanophytoplankton and picophytoplankton increased during winter linked to lower PP (0.24â¯Â±â¯0.03â¯gâ¯C mâ2 dâ1). Water column at ReS was always autotrophic with net community production (NCP) ranging from 186â¯Â±â¯67â¯mmol O2 mâ2 dâ1 during upwelling to 43â¯Â±â¯22â¯mmol O2 mâ2 dâ1 in winter. At RaS, there was a decrease in PP attributable not only to mussel consumption but also to the lower irradiance under mussel rafts. Concomitant decrease in NCP was also observed (by 56%), yet remained autotrophic, supporting the view that under current conditions food does not limit mussel growth in the RÃa, thus securing the carrying capacity of the system in terms of production.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Estuarine, Coastal and Shelf Science - Volume 204, 1 May 2018, Pages 130-139
Journal: Estuarine, Coastal and Shelf Science - Volume 204, 1 May 2018, Pages 130-139
نویسندگان
MarÃa Froján, Carmen G. Castro, Diana Zúñiga, Belén Arbones, Fernando Alonso-Pérez, Francisco G. Figueiras,