Variability of CO 2 emissions during the rearing cycle of a semi-intensive shrimp farm in a mangrove coastal zone (New Caledonia).

Autor: Aimé J; University of New Caledonia, BP R4, 98851 Noumea, New Caledonia; IMPMC, Institut de Recherche pour le Développement (IRD), UPMC, CNRS, MNHN, Noumea, New Caledonia., Allenbach M; University of New Caledonia, BP R4, 98851 Noumea, New Caledonia., Bourgeois C; Auckland University of Technology (AUT), Institute for Applied Ecology New Zealand, School of Applied Sciences, Faculty of Health and Environmental Sciences, 34 St Paul Street, 1010 Auckland, New Zealand; IMPMC, Institut de Recherche pour le Développement (IRD), UPMC, CNRS, MNHN, Noumea, New Caledonia., Léopold A; Institut Agronomique néo-Calédonien (IAC), BP 73, 98890 Païta, New Caledonia; IMPMC, Institut de Recherche pour le Développement (IRD), UPMC, CNRS, MNHN, Noumea, New Caledonia; University of New Caledonia, BP R4, 98851 Noumea, New Caledonia., Jacotot A; University of New Caledonia, BP R4, 98851 Noumea, New Caledonia; IMPMC, Institut de Recherche pour le Développement (IRD), UPMC, CNRS, MNHN, Noumea, New Caledonia., Vinh TV; IMPMC, Institut de Recherche pour le Développement (IRD), UPMC, CNRS, MNHN, Noumea, New Caledonia; Nong Lam University, Thu Duc district, Ho Chi Minh City, Viet Nam., Nho NT; IMPMC, Institut de Recherche pour le Développement (IRD), UPMC, CNRS, MNHN, Noumea, New Caledonia; University of Sciences of Ho Chi Minh City, Analytical Chemistry Department, 225 Nguyen Van Cu, District 5, Ho Chi Minh City, Viet Nam., Patrona LD; Ifremer, 101 promenade Roger Laroque, Anse Vata, 98800 Noumea, New Caledonia., Marchand C; IMPMC, Institut de Recherche pour le Développement (IRD), UPMC, CNRS, MNHN, Noumea, New Caledonia; University of Sciences of Ho Chi Minh City, Analytical Chemistry Department, 225 Nguyen Van Cu, District 5, Ho Chi Minh City, Viet Nam. Electronic address: cyril.marchand@ird.fr.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2018 Apr; Vol. 129 (1), pp. 194-206. Date of Electronic Publication: 2018 Feb 22.
DOI: 10.1016/j.marpolbul.2018.02.025
Abstrakt: In New Caledonia, shrimp ponds are built not on cleared mangroves but on salt flats behind the mangroves. The objectives of this study were to determine the variability of CO 2 fluxes from a semi-intensive shrimp pond during active and non-active periods of the farm and to determine the carbon dynamics from the upstream tidal creek to the downstream creek, which receives the farm's effluents. CO 2 emissions from the active pond were estimated at 11.1 ± 5.26 mmol CO 2  m -2  d -1 . By modifying the hydrodynamics of the creeks, farm practices also influenced CO 2 emissions from both the upstream and downstream creeks. After tillage, all the organic carbon deposited at the pond bottom during the active period was mineralized, resulting in CO 2 emissions to the atmosphere estimated at 7.9 TCO 2  ha -1 . Therefore, shrimp farming is an anthropogenic source of CO 2 to the atmosphere, but suitable and optimized rearing practices limit these emissions.
(Copyright © 2018 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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