Influence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons of French Polynesia

Bivalve cultivation can significantly contribute to nutrient cycling in semi-enclosed ecosystems. We investigated the influence of suspended pearl oyster culture on nutrient regeneration in the water column of 3 oligotrophic lagoons in French Polynesia. The aim of this first study performed in a tro...

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Autores principales:	E Lacoste, Y Gueguen, G Le Moullac, MS Koua, N Gaertner-Mazouni
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2014
Materias:	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/4cc3f728e4ce4b3c9ddeb620a9d08718
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spelling	oai:doaj.org-article:4cc3f728e4ce4b3c9ddeb620a9d087182021-11-17T10:11:11ZInfluence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons of French Polynesia1869-215X1869-753410.3354/aei00107https://doaj.org/article/4cc3f728e4ce4b3c9ddeb620a9d087182014-07-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v5/n3/p209-219/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534Bivalve cultivation can significantly contribute to nutrient cycling in semi-enclosed ecosystems. We investigated the influence of suspended pearl oyster culture on nutrient regeneration in the water column of 3 oligotrophic lagoons in French Polynesia. The aim of this first study performed in a tropical area was to assess the seasonal variability of nutrient fluxes and to quantify the contribution of biofouling communities. In situ metabolic enclosure systems were used to measure nutrient uptake or release by ‘cultivation units’ (i.e. 4 pearl oysters with or without associated biofouling). In all 3 study lagoons (Tahiti, Mangareva, Ahe), nutrient fluxes produced by pearl oyster and associated biofouling communities (CR units) were 4- to 6-fold higher than those measured for cleaned pearl oysters. CR units can release dissolved inorganic nitrogen and soluble reactive phosphorus in the water column at a rate of 200 and 50 µmol h-1, respectively. Trophic level and composition of biofouling communities may explain the variations of fluxes observed between the different islands. At the pearl farm scale (Ahe), pearl oyster long-lines may supply 70% of the inorganic nitrogen demand for primary production, with biofouling communities accounting for 60% of the total nutrient release. Pearl oyster culture enhances nutrient availability and alters stoichiometry, which can strongly modify the dynamics of the planktonic ecosystem.E LacosteY GueguenG Le MoullacMS KouaN Gaertner-MazouniInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 5, Iss 3, Pp 209-219 (2014)
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 E Lacoste Y Gueguen G Le Moullac MS Koua N Gaertner-Mazouni Influence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons of French Polynesia
description	Bivalve cultivation can significantly contribute to nutrient cycling in semi-enclosed ecosystems. We investigated the influence of suspended pearl oyster culture on nutrient regeneration in the water column of 3 oligotrophic lagoons in French Polynesia. The aim of this first study performed in a tropical area was to assess the seasonal variability of nutrient fluxes and to quantify the contribution of biofouling communities. In situ metabolic enclosure systems were used to measure nutrient uptake or release by ‘cultivation units’ (i.e. 4 pearl oysters with or without associated biofouling). In all 3 study lagoons (Tahiti, Mangareva, Ahe), nutrient fluxes produced by pearl oyster and associated biofouling communities (CR units) were 4- to 6-fold higher than those measured for cleaned pearl oysters. CR units can release dissolved inorganic nitrogen and soluble reactive phosphorus in the water column at a rate of 200 and 50 µmol h-1, respectively. Trophic level and composition of biofouling communities may explain the variations of fluxes observed between the different islands. At the pearl farm scale (Ahe), pearl oyster long-lines may supply 70% of the inorganic nitrogen demand for primary production, with biofouling communities accounting for 60% of the total nutrient release. Pearl oyster culture enhances nutrient availability and alters stoichiometry, which can strongly modify the dynamics of the planktonic ecosystem.
format	article
author	E Lacoste Y Gueguen G Le Moullac MS Koua N Gaertner-Mazouni
author_facet	E Lacoste Y Gueguen G Le Moullac MS Koua N Gaertner-Mazouni
author_sort	E Lacoste
title	Influence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons of French Polynesia
title_short	Influence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons of French Polynesia
title_full	Influence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons of French Polynesia
title_fullStr	Influence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons of French Polynesia
title_full_unstemmed	Influence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons of French Polynesia
title_sort	influence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons of french polynesia
publisher	Inter-Research
publishDate	2014
url	https://doaj.org/article/4cc3f728e4ce4b3c9ddeb620a9d08718
work_keys_str_mv	AT elacoste influenceoffarmedpearloystersandassociatedbiofoulingcommunitiesonnutrientregenerationinlagoonsoffrenchpolynesia AT ygueguen influenceoffarmedpearloystersandassociatedbiofoulingcommunitiesonnutrientregenerationinlagoonsoffrenchpolynesia AT glemoullac influenceoffarmedpearloystersandassociatedbiofoulingcommunitiesonnutrientregenerationinlagoonsoffrenchpolynesia AT mskoua influenceoffarmedpearloystersandassociatedbiofoulingcommunitiesonnutrientregenerationinlagoonsoffrenchpolynesia AT ngaertnermazouni influenceoffarmedpearloystersandassociatedbiofoulingcommunitiesonnutrientregenerationinlagoonsoffrenchpolynesia
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Influence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons of French Polynesia

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