Planktonic processes contribute significantly to the organic carbon budget of a coastal fish-culturing area

We assessed the role of planktonic processes, in comparison to allochthonous input from fish cages and sedimentary loss, in the organic carbon (OC) budget of the water column in a semi-enclosed fish-culturing area (culturing red sea bream Pagrus major and yellow tail Seriola quinqueradiata). The sed...

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Autores principales:	T Yoshikawa, M Eguchi
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2013
Materias:	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/42245fcb597b45fca77dc32561eced7d
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spelling	oai:doaj.org-article:42245fcb597b45fca77dc32561eced7d2021-11-17T10:05:58ZPlanktonic processes contribute significantly to the organic carbon budget of a coastal fish-culturing area1869-215X1869-753410.3354/aei00085https://doaj.org/article/42245fcb597b45fca77dc32561eced7d2013-11-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v4/n3/p239-250/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534We assessed the role of planktonic processes, in comparison to allochthonous input from fish cages and sedimentary loss, in the organic carbon (OC) budget of the water column in a semi-enclosed fish-culturing area (culturing red sea bream Pagrus major and yellow tail Seriola quinqueradiata). The sedimentation rate of particulate organic carbon (POC) at the fish-cage station was an average of 1.5 times that at non-cage stations. There was no significant difference in photosynthesis or respiration rates between fish-cage and non-cage stations. Annual allochthonous OC input in the form of leftover feed and fish feces was estimated to be 5 or 10 times that of autochthonous OC input by planktonic photosynthesis. In contrast, POC derived from phytoplankton accounted for a significant part (8 to 61%) of total POC sedimentation. As to sinks of OC in the water column, annual planktonic respiration was twice as high as sedimentary loss at the fish-cage station. The plankton community tended to act as a source of OC in spring and summer and as an OC sink in fall and winter. The present study shows that a significant part of allochthonous and autochthonous OC input is respired by plankton and that the remaining OC input is deposited on the seafloor of fish-culturing areas.T YoshikawaM EguchiInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 4, Iss 3, Pp 239-250 (2013)
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 T Yoshikawa M Eguchi Planktonic processes contribute significantly to the organic carbon budget of a coastal fish-culturing area
description	We assessed the role of planktonic processes, in comparison to allochthonous input from fish cages and sedimentary loss, in the organic carbon (OC) budget of the water column in a semi-enclosed fish-culturing area (culturing red sea bream Pagrus major and yellow tail Seriola quinqueradiata). The sedimentation rate of particulate organic carbon (POC) at the fish-cage station was an average of 1.5 times that at non-cage stations. There was no significant difference in photosynthesis or respiration rates between fish-cage and non-cage stations. Annual allochthonous OC input in the form of leftover feed and fish feces was estimated to be 5 or 10 times that of autochthonous OC input by planktonic photosynthesis. In contrast, POC derived from phytoplankton accounted for a significant part (8 to 61%) of total POC sedimentation. As to sinks of OC in the water column, annual planktonic respiration was twice as high as sedimentary loss at the fish-cage station. The plankton community tended to act as a source of OC in spring and summer and as an OC sink in fall and winter. The present study shows that a significant part of allochthonous and autochthonous OC input is respired by plankton and that the remaining OC input is deposited on the seafloor of fish-culturing areas.
format	article
author	T Yoshikawa M Eguchi
author_facet	T Yoshikawa M Eguchi
author_sort	T Yoshikawa
title	Planktonic processes contribute significantly to the organic carbon budget of a coastal fish-culturing area
title_short	Planktonic processes contribute significantly to the organic carbon budget of a coastal fish-culturing area
title_full	Planktonic processes contribute significantly to the organic carbon budget of a coastal fish-culturing area
title_fullStr	Planktonic processes contribute significantly to the organic carbon budget of a coastal fish-culturing area
title_full_unstemmed	Planktonic processes contribute significantly to the organic carbon budget of a coastal fish-culturing area
title_sort	planktonic processes contribute significantly to the organic carbon budget of a coastal fish-culturing area
publisher	Inter-Research
publishDate	2013
url	https://doaj.org/article/42245fcb597b45fca77dc32561eced7d
work_keys_str_mv	AT tyoshikawa planktonicprocessescontributesignificantlytotheorganiccarbonbudgetofacoastalfishculturingarea AT meguchi planktonicprocessescontributesignificantlytotheorganiccarbonbudgetofacoastalfishculturingarea
_version_	1718425606061817856

Planktonic processes contribute significantly to the organic carbon budget of a coastal fish-culturing area

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