Enrichment of aquaculture earthen ponds with Hediste diversicolor: Consequences for benthic dynamics and natural productivity

Carvalho, Susana; Barata, Marisa; Gaspar, Miguel B.; Pousão-Ferreira, Pedro; Fonseca, Luı́s Cancela da

doi:10.1016/j.aquaculture.2006.11.028

Cited by 34 publications

(19 citation statements)

References 25 publications

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“…Although not dominant in the present study, Gammarella fucicola was exclusively collected within this area. However, this species is not exclusively associated with maerl, as it was already collected in other distinct habitats, both intertidal (Carvalho et al 2006b) and subtidal (Carvalho et al 2007(Carvalho et al , 2009) areas of the Ria Formosa lagoon (southern Portuguese coast).…”

Section: Distribution Of Amphipod Assemblages In Relation To Depthmentioning

confidence: 78%

The effect of depth and sediment type on the spatial distribution of shallow soft-bottom amphipods along the southern Portuguese coast

et al. 2011

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The present study provides updated information on amphipod assemblages of the southern Portuguese coast, the most south-western part of continental Europe. The inXuence of depth and sediment type on the spatial distribution of shallow soft-bottom amphipods was tested by means of univariate and multivariate methods. Samples were collected down to 40 m depth within areas ranging from very Wne sand to gravel. The ratio between density and diversity was found to increase with depth and from coarser to Wner sediments. Both physical variables tested were found to play a major role in structuring amphipod assemblages. However, some dominance of depth was evident as samples were mainly separated according to this variable. Moreover, while only 15 taxa were common to all depth levels, 35 were collected from all sediment types. Both depth and sediment type may override the potential eVects of geographical location, as samples from diVerent areas along the southern Portuguese coast were biologically related. A peculiar habitat was sampled in this study: a maerl bed, which was conWrmed to be a hotspot of density. Nevertheless, this habitat did not harbor a distinct amphipod assemblage but some taxa such as Caprella spp., Lembos websteri, lysianassids and Gammarella fucicola were preferentially collected there. The biogeographical analysis pointed out the occurrence of 8% of Mediterranean endemic species, conWrming the inXuence of the Mediterranean Sea beyond the Strait of Gibraltar, and the AtlanticMediterranean feature of the amphipod fauna of this geographically relevant area. The present results support the need to interpret the spatial distribution patterns of marine species in relation to the combined eVect of depth and sediment characteristics.

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Section: Distribution Of Amphipod Assemblages In Relation To Depthmentioning

confidence: 78%

The effect of depth and sediment type on the spatial distribution of shallow soft-bottom amphipods along the southern Portuguese coast

et al. 2011

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“…However, in the present study some amphipod families showed a positive response to the moderate impact from the fish farm, substantially increasing their abundances under these conditions. We detected an increase in the Nuuanuidae family, which commonly shows high population densities in response to organic enrichment or build-up of detritus (Carvalho et al, 2007). Therefore, using a multivariate approach comparing affected and control locations, we obtain information on the overall changes in polychaete or amphipod assemblages.…”

Section: Discussionmentioning

confidence: 99%

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

et al. 2018

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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 and 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.

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“…Hence, H. diversicolor is usually confined to fresher waters, greater depths, and high-sulfidic sediment areas where it is able to tolerate extreme conditions, albeit at the expense of competitive ability [50,51]. For example, the introduction of macrobenthos into aquaculture pens resulted in increased species richness, enhanced the productivity and biomass of benthic fauna, and improved environmental conditions for fish production by reducing the organic matter content in sediments [52]. Also, in comparing data related to oligochaete, Nais sp.…”

Section: Discussionmentioning

confidence: 99%

The Relationship between Soft-Bottom Macrobenthic Assemblages and Environmental Variables of Boojagh Marine National Park, Southern Caspian Sea, Iran.

Negarestan¹,

Maghsoudlou²,

Afshin³

2018

J Oceanogr Mar Res

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Enrichment of aquaculture earthen ponds with Hediste diversicolor: Consequences for benthic dynamics and natural productivity

Cited by 34 publications

References 25 publications

The effect of depth and sediment type on the spatial distribution of shallow soft-bottom amphipods along the southern Portuguese coast

The effect of depth and sediment type on the spatial distribution of shallow soft-bottom amphipods along the southern Portuguese coast

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

The Relationship between Soft-Bottom Macrobenthic Assemblages and Environmental Variables of Boojagh Marine National Park, Southern Caspian Sea, Iran.

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