Benthic responses to organic enrichment under a mussel (Mytilus edulis) farm

被引:0
|
作者
Lavoie, Marie-France [1 ]
Lacoste, Elise [2 ]
Weise, Andrea M. [1 ]
Mckindsey, Christopher W. [1 ]
机构
[1] Maurice Lamontagne Inst, Fisheries & Oceans Canada, Mont Joli, PQ, Canada
[2] Ctr Etud Promot Act Lagunaires & Maritimes, Sete, France
关键词
biodeposition; organic enrichment; mussel aquaculture; infaunal macrobenthic communities; Mytilus edilus; DE-LA-MADELEINE; BIOGEOCHEMICAL FLUXES; SHELLFISH AQUACULTURE; MULTIVARIATE-ANALYSIS; CULTURE; WATER; COMMUNITIES; QUEBEC; LAGOON; IMPACT;
D O I
10.3389/fmars.2024.1433365
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Bivalve culture is know to affect some interactions between the water column and the benthic environment with the organic enrichment. An in situ mesocosms experiment was used to determine the influence of mussel biodeposition on the benthic ecosystem in St. Peters Bay, Prince Edward Island, eastern Canada. Eight mussel densities (0 to 2266 mussels m-2) were placed above mesocosms to reproduce the organic enrichment from a mussel farm over 12 weeks. The experimental procedure created an accumulation of organic matter on the seafloor with increasing mussel densities. Some benthic parameters had the predicted response to organic enrichment, with the presence of anoxic sediment in sediment profile images, increased water and organic matter content, and reduced infaunal abundance and species richness. Other parameters, including redox potential, total free sulfides, and the response of the biotic index AMBI, had inconsistent responses to mussel biodeposition-related organic enrichment. Given that other studies done in other locations have observed varying results, results suggest that measurement of various parameters is important to interpret the influence of deposition from mussel farms. The conditions of the site and the study duration are also parameters to consider when evaluating the results from mesocosm studies. Results from this study also suggest that St. Peters Bay is likely impacted by biodeposition from the mussels farmed there.
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页数:15
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