Assessment of the impact of Atlantic bluefin tuna farming on Adriatic benthic habitats by analysing macroinvertebrate assemblage structure at family level

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Title: Assessment of the impact of Atlantic bluefin tuna farming on Adriatic benthic habitats by analysing macroinvertebrate assemblage structure at family level
Authors: Sanchez-Jerez, Pablo | Fernandez-Gonzalez, Victoria | Mladineo, Ivona | Matijević, Slavica | Bogner, Danijela | Grubišić, Leon | Fernandez-Jover, Damian
Research Group/s: Biología Marina
Center, Department or Service: Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada
Keywords: Mediterranean Sea | Tuna farming | Aquaculture impact | Monitoring program
Knowledge Area: Zoología
Issue Date: 10-Jul-2018
Publisher: Hellenic Centre for Marine Research (HCMR)
Citation: Mediterranean Marine Science. 2018, 19(2): 344-355. doi:10.12681/mms.2133
Abstract: The rapidly expanding Atlantic bluefin tuna fattening industry is characterized by high stock densities and a high input food biomass in the form of whole bait seafood. The environmental impact of this activity must be effectively monitored within a proper sustainable development framework, to address concerns about the potential adverse effects. However, evaluation of monitoring tools for tuna farming has received less attention than other activities. Based on the principles of key taxa (Pocklington & Wells, 1992), we tested the potential use of changes in benthic macroinvertebrate assemblages, polychaetes and amphipods for this purpose. Applying a non-parametric multivariate approach for monitoring the impact of this aquaculture activity on the benthic habitat, we checked for correlations with the physicochemical environmental variables of the sediment. A hierarchical spatial design was followed, using multiple controls. Amphipods and polychaetes showed dissimilarities between impacted and control locations, with significant differences for total assemblage structure at a taxonomic level of families. Total nitrogen (TN) and total sulfur (TS) concentrations were the variables best associated with these changes for amphipods, and d 13C and total phosphorus (TP) were the best for polychaetes. However, total free sulfides (TFS) and TP were the chemical variables that best indicated the effects on sediment. Using this approach, surrogating the whole benthic assemblage to a single taxocene, our data suggest that monitoring tuna farming impact by comparing the changes in amphipod and polychaete assemblages at family level could be an optimal procedure with an excellent cost/benefit ratio.
Sponsor: The study was funded by the Postdoctoral program of the Generalitat Valenciana for DFJ (APOSTD/2012/044).
ISSN: 1108-393X | 1791-6763 (Online)
DOI: 10.12681/mms.2133
Language: eng
Type: info:eu-repo/semantics/article
Rights: Licencia Creative Commons Reconocimiento-NoComercial-CompartirIgual 4.0
Peer Review: si
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Appears in Collections:INV - BM - Artículos Científicos / Scientific Papers

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