Variations in CO2 fluxes from grass carp Ctenopharyngodon idella aquaculture polyculture ponds

Monthly and diurnal CO2 fluxes at the water-air interface were measured in 3 grass carp Ctenopharyngodon idella polyculture ponds using the closed-chamber method during the farming season from April to September 2013. The results showed that the mean CO2 emission rate from the 3 ponds was 97.8 mg m-...

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Autores principales:	Y Chen, S Dong, Z Wang, F Wang, Q Gao, X Tian, Y Xiong
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2015
Materias:	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/cca8704bb703449e8218a50b5697037e
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spelling	oai:doaj.org-article:cca8704bb703449e8218a50b5697037e2021-11-04T10:27:44ZVariations in CO2 fluxes from grass carp Ctenopharyngodon idella aquaculture polyculture ponds1869-215X1869-753410.3354/aei00149https://doaj.org/article/cca8704bb703449e8218a50b5697037e2015-12-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v8/ns/p31-40/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534Monthly and diurnal CO2 fluxes at the water-air interface were measured in 3 grass carp Ctenopharyngodon idella polyculture ponds using the closed-chamber method during the farming season from April to September 2013. The results showed that the mean CO2 emission rate from the 3 ponds was 97.8 mg m-2 h-1 (range 50.6 to 151.0 mg m-2 h-1). Apparent seasonal and diurnal variations in CO2 fluxes were observed; the lowest (1.73 mg m-2 h-1) occurred in April and the highest occurred in July and August (212.9 and 181.9 mg m-2 h-1, respectively). The night-time to daytime CO2 emission ratio was <1 (range 0.44 to 0.83) in May during the early part of the farming season. Night-time CO2 emissions in early August were higher than those during the daytime (range 1.06 to 1.37). The night-time to daytime CO2 emission ratios were 0.84 to 1.36 during late September. The CO2 fluxes from the freshwater aquaculture ponds were higher than those of lakes and reservoirs, whereas they were lower than those of marshes in previous studies. The increases in nutrient load and pelagic respiration from feeding the fish were significantly associated with CO2 emissions from the freshwater aquaculture ponds. Freshwater aquaculture ponds in temperate monsoon climate regions contribute an estimated 2.980 million t yr-1 CO2 based on the mean investigated CO2 emission rate, contributing 0.0088% of the current annual global CO2 emissions, and represent a small but previously unquantified CO2 emission source.Y ChenS DongZ WangF WangQ GaoX TianY XiongInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 8, Iss s, Pp 31-40 (2015)
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 Y Chen S Dong Z Wang F Wang Q Gao X Tian Y Xiong Variations in CO2 fluxes from grass carp Ctenopharyngodon idella aquaculture polyculture ponds
description	Monthly and diurnal CO2 fluxes at the water-air interface were measured in 3 grass carp Ctenopharyngodon idella polyculture ponds using the closed-chamber method during the farming season from April to September 2013. The results showed that the mean CO2 emission rate from the 3 ponds was 97.8 mg m-2 h-1 (range 50.6 to 151.0 mg m-2 h-1). Apparent seasonal and diurnal variations in CO2 fluxes were observed; the lowest (1.73 mg m-2 h-1) occurred in April and the highest occurred in July and August (212.9 and 181.9 mg m-2 h-1, respectively). The night-time to daytime CO2 emission ratio was <1 (range 0.44 to 0.83) in May during the early part of the farming season. Night-time CO2 emissions in early August were higher than those during the daytime (range 1.06 to 1.37). The night-time to daytime CO2 emission ratios were 0.84 to 1.36 during late September. The CO2 fluxes from the freshwater aquaculture ponds were higher than those of lakes and reservoirs, whereas they were lower than those of marshes in previous studies. The increases in nutrient load and pelagic respiration from feeding the fish were significantly associated with CO2 emissions from the freshwater aquaculture ponds. Freshwater aquaculture ponds in temperate monsoon climate regions contribute an estimated 2.980 million t yr-1 CO2 based on the mean investigated CO2 emission rate, contributing 0.0088% of the current annual global CO2 emissions, and represent a small but previously unquantified CO2 emission source.
format	article
author	Y Chen S Dong Z Wang F Wang Q Gao X Tian Y Xiong
author_facet	Y Chen S Dong Z Wang F Wang Q Gao X Tian Y Xiong
author_sort	Y Chen
title	Variations in CO2 fluxes from grass carp Ctenopharyngodon idella aquaculture polyculture ponds
title_short	Variations in CO2 fluxes from grass carp Ctenopharyngodon idella aquaculture polyculture ponds
title_full	Variations in CO2 fluxes from grass carp Ctenopharyngodon idella aquaculture polyculture ponds
title_fullStr	Variations in CO2 fluxes from grass carp Ctenopharyngodon idella aquaculture polyculture ponds
title_full_unstemmed	Variations in CO2 fluxes from grass carp Ctenopharyngodon idella aquaculture polyculture ponds
title_sort	variations in co2 fluxes from grass carp ctenopharyngodon idella aquaculture polyculture ponds
publisher	Inter-Research
publishDate	2015
url	https://doaj.org/article/cca8704bb703449e8218a50b5697037e
work_keys_str_mv	AT ychen variationsinco2fluxesfromgrasscarpctenopharyngodonidellaaquaculturepolycultureponds AT sdong variationsinco2fluxesfromgrasscarpctenopharyngodonidellaaquaculturepolycultureponds AT zwang variationsinco2fluxesfromgrasscarpctenopharyngodonidellaaquaculturepolycultureponds AT fwang variationsinco2fluxesfromgrasscarpctenopharyngodonidellaaquaculturepolycultureponds AT qgao variationsinco2fluxesfromgrasscarpctenopharyngodonidellaaquaculturepolycultureponds AT xtian variationsinco2fluxesfromgrasscarpctenopharyngodonidellaaquaculturepolycultureponds AT yxiong variationsinco2fluxesfromgrasscarpctenopharyngodonidellaaquaculturepolycultureponds
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Variations in CO2 fluxes from grass carp Ctenopharyngodon idella aquaculture polyculture ponds

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