Sources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China

Field observations were made from 2012 to 2014 at an integrated multi-trophic aquaculture (IMTA) site in Sanggou Bay (SGB), China, to characterize the nutrients associated with aquaculture activities, and to assess the effects of aquaculture on nutrient cycles in the bay. Dissolved inorganic and org...

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Autores principales:	R Li, S Liu, J Zhang, Z Jiang, J Fang
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2016
Materias:	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/d0abb8d1f2ad4301a15568a4e9ecc7bc
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spelling	oai:doaj.org-article:d0abb8d1f2ad4301a15568a4e9ecc7bc2021-11-11T11:02:28ZSources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China1869-215X1869-753410.3354/aei00177https://doaj.org/article/d0abb8d1f2ad4301a15568a4e9ecc7bc2016-04-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v8/p285-309/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534Field observations were made from 2012 to 2014 at an integrated multi-trophic aquaculture (IMTA) site in Sanggou Bay (SGB), China, to characterize the nutrients associated with aquaculture activities, and to assess the effects of aquaculture on nutrient cycles in the bay. Dissolved inorganic and organic nutrient levels were measured in rivers, groundwater, and SGB. Seasonal variations in nutrient concentrations were detected in the rivers, particularly enrichment of dissolved inorganic nitrogen (DIN) and silicate (DSi). Nutrient concentrations showed considerable seasonal variation, with higher and significantly different concentrations occurring in autumn than in the other seasons. The composition and distribution of nutrients were also affected by the species being cultured. Dissolved organic nitrogen and phosphorus (DON and DOP) accounted for 27 to 87% of total dissolved nitrogen and 34 to 81% of total dissolved phosphorus, respectively. Phosphorus may be a potentially limiting nutrient for phytoplankton growth in summer. Nutrient budgets were developed based on a simple steady-state box model. These showed that bivalve aquaculture was the major source of PO43- (contributing 64% of total influx) and led to increased riverine fluxes of PO43-. The results indicated that substantial quantities of nitrogen and DSi accumulated in sediments or were transformed into other forms (e.g. phytoplankton cell composition or particles). Large quantities of DIN and PO43- were removed from the bay through harvesting of seaweeds and bivalves, which represented up to 64 and 81% of total outflux, respectively. The results show that aquaculture activities play the most important role in nutrient cycling in SGB.R LiS LiuJ ZhangZ JiangJ FangInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 8, Pp 285-309 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
spellingShingle	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 R Li S Liu J Zhang Z Jiang J Fang Sources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China
description	Field observations were made from 2012 to 2014 at an integrated multi-trophic aquaculture (IMTA) site in Sanggou Bay (SGB), China, to characterize the nutrients associated with aquaculture activities, and to assess the effects of aquaculture on nutrient cycles in the bay. Dissolved inorganic and organic nutrient levels were measured in rivers, groundwater, and SGB. Seasonal variations in nutrient concentrations were detected in the rivers, particularly enrichment of dissolved inorganic nitrogen (DIN) and silicate (DSi). Nutrient concentrations showed considerable seasonal variation, with higher and significantly different concentrations occurring in autumn than in the other seasons. The composition and distribution of nutrients were also affected by the species being cultured. Dissolved organic nitrogen and phosphorus (DON and DOP) accounted for 27 to 87% of total dissolved nitrogen and 34 to 81% of total dissolved phosphorus, respectively. Phosphorus may be a potentially limiting nutrient for phytoplankton growth in summer. Nutrient budgets were developed based on a simple steady-state box model. These showed that bivalve aquaculture was the major source of PO43- (contributing 64% of total influx) and led to increased riverine fluxes of PO43-. The results indicated that substantial quantities of nitrogen and DSi accumulated in sediments or were transformed into other forms (e.g. phytoplankton cell composition or particles). Large quantities of DIN and PO43- were removed from the bay through harvesting of seaweeds and bivalves, which represented up to 64 and 81% of total outflux, respectively. The results show that aquaculture activities play the most important role in nutrient cycling in SGB.
format	article
author	R Li S Liu J Zhang Z Jiang J Fang
author_facet	R Li S Liu J Zhang Z Jiang J Fang
author_sort	R Li
title	Sources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China
title_short	Sources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China
title_full	Sources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China
title_fullStr	Sources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China
title_full_unstemmed	Sources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China
title_sort	sources and export of nutrients associated with integrated multi-trophic aquaculture in sanggou bay, china
publisher	Inter-Research
publishDate	2016
url	https://doaj.org/article/d0abb8d1f2ad4301a15568a4e9ecc7bc
work_keys_str_mv	AT rli sourcesandexportofnutrientsassociatedwithintegratedmultitrophicaquacultureinsanggoubaychina AT sliu sourcesandexportofnutrientsassociatedwithintegratedmultitrophicaquacultureinsanggoubaychina AT jzhang sourcesandexportofnutrientsassociatedwithintegratedmultitrophicaquacultureinsanggoubaychina AT zjiang sourcesandexportofnutrientsassociatedwithintegratedmultitrophicaquacultureinsanggoubaychina AT jfang sourcesandexportofnutrientsassociatedwithintegratedmultitrophicaquacultureinsanggoubaychina
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Sources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China

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