Influence of the artificial reef size configuration on transient ichthyofauna – Southeastern Brazil

Gatts, Pedro Vianna; Franco, Marcos Alberto Lima; Santos, Luciano Neves dos; Rocha, Diogo Fonseca da; Zalmon, Ilana Rosental

doi:10.1016/j.ocecoaman.2014.06.022

Cited by 16 publications

(5 citation statements)

References 33 publications

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“…In agreement with Cummings (1994), Santos et al (2005) and Daugherty et al (2014), intra-annual changes in environmental conditions were among the major factors accounting for fish attraction at AR, wherein greater abundance and biomass values were recorded during wet seasons. In our study, species belonging to the Sciaenidae, Carangidae, and Ariidae families were numerically dominant at AR, most of which are more closely associated with estuarine systems (Fagundes-Netto et al, 2011;Gatts et al, 2014;Rocha et al, 2014).…”

Section: Discussionmentioning

confidence: 47%

“…This AR aimed to increase fishery resource biomass and abundance and, consequently, improve nearby artisanal fishing catches (Lima et al, 2018). Despite the gap in knowledge about the efficiency of these ARs for attracting species of commercial interest, previous studies in the region have suggested that the fish assemblages are affected by artificial structures, leading to increased abundance, species richness, and biomass over time, especially during the first six years after AR deployment (Zalmon et al, 2002;Brotto and Zalmon, 2008;Santos et al, 2011;Gatts et al, 2014;Santos and Zalmon, 2015). In addition, the attraction of invertebrates, retention of sediment, and seasonal inflows of freshwater and fluvial sediment may influence the temporal trends in fish assemblages associated with ARs (Rocha et al, 2014;Zalmon et al, 2014;Gatts et al, 2015;).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Could artificial reefs increase access to estuarine fishery resources? Insights from a long-term assessment

Lima¹,

Sánchez-Jérez

Santos

et al. 2020

Estuarine, Coastal and Shelf Science

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Section: Discussionmentioning

confidence: 47%

Section: Introductionmentioning

confidence: 99%

Could artificial reefs increase access to estuarine fishery resources? Insights from a long-term assessment

Lima¹,

Sánchez-Jérez

Santos

et al. 2020

Estuarine, Coastal and Shelf Science

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“…Further, the potential effects of high species turnover were diminished in our study by applying the approach of focusing most of our temporal analyses (except for DCA) on fish families and trophic guilds. Finally, recent studies performed on the same reefs and using the same fishing methods and efforts (Gatts et al, 2014(Gatts et al, , 2015 detected few or no differences in composition or structure of the associated fish assemblages by placing the reef balls individually or scattered (two to three modules together), setting them close (0.5 m) or apart (15 m) from each other, also highlighting the key role of seasonal variation of freshwater outflows and sediments from large rivers on fish colonization. Those complementary studies contribute more to support than to weaken our major hypothesis on the disruption of fish colonization and succession to artificial reefs as being caused by environmental disturbances.…”

Section: Discussionmentioning

confidence: 79%

Long-term changes of fish assemblages associated with artificial reefs off the northern coast of Rio de Janeiro, Brazil

Santos

Zalmon

2015

J. Appl. Ichthyol.

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Summary Changes in fish assemblages associated with artificial reefs 5‐km offshore (Southeast Brazil) were assessed. Bottom gillnets were used for 1 month per year for up to 15 years after the artificial reef had been established. Totals of 552 fishes were caught, with Chloroscombrus chrysurus and Conodon nobilis the dominant species and Scianidae the richest family. Species richness, abundance and biomass varied significantly with time, increasing gradually for several years but decreasing thereafter. The same unimodal response was recorded for abundance and biomass of planktivorous and invertivorous fishes and for Haemulidae, suggesting that this family accounted for most of the temporal variations recorded per species richness and CPUE values. The abundance and biomass of sharks decreased gradually after the first year but increased in the 15th year. While these variables increased steadily toward an apparent stable level in the later part of the study for Scianidae and Ariidae, they decreased linearly with time for Carangidae. Fish use of the artificial reefs may be modulated by a continuous species turnover, since there was no single species recurring throughout the surveys. This study stresses the importance of long‐term assessments of artificial marine reefs in order to incorporate the effects of successional patterns of fish colonization into management actions.

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“…Gillnets were chosen because they are the main gear used by local fishermen and to allow a direct comparison to previous research in the same area (Santos et al , 2010; Gatts et al , 2014). But, like any fishing gear, gillnets have a bias associated with their selectivity (King, 2007).…”

Section: Discussionmentioning

confidence: 99%

The effect of an artificial reef system on the transient fish assemblages – south-eastern coast of Brazil

Rocha¹,

Franco²,

Gatts³

et al. 2014

J. Mar. Biol. Ass.

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Artificial reefs (ARs) are often used to improve fishing and, consequently, the economy of a region. However, the way in which the species use the reefs may vary between fish assemblages. An assessment was made of the influence of an AR complex on the transient fish population off the northern coast of Rio de Janeiro state and, therefore, two control areas were sampled. Gillnets were used to capture individual fish in six sampling surveys. Cumulative abundance and biomass curves (ABC) were used to assess the possible effects of the reefs on the community's functional structure. In the dry season, during which the influence of the Paraíba do Sul River is smaller, a larger richness of r-strategy species and juveniles of K-strategy species was observed in the reef area compared with the control areas, suggesting that the AR acts as a protective environment for these species. During the lower river discharge period the results indicated a potential disturbance in the functional structure of the AR fish community and, therefore, a less stable environment relative to the control areas. This 'instability' warrants a positive connotation, as it indicates that the artificial reefs are harbouring species that are particularly sensitive to predation, making the reef a powerful tool for maintaining these populations on the northern coast of Rio de Janeiro.

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Influence of the artificial reef size configuration on transient ichthyofauna – Southeastern Brazil

Cited by 16 publications

References 33 publications

Could artificial reefs increase access to estuarine fishery resources? Insights from a long-term assessment

Could artificial reefs increase access to estuarine fishery resources? Insights from a long-term assessment

Long-term changes of fish assemblages associated with artificial reefs off the northern coast of Rio de Janeiro, Brazil

The effect of an artificial reef system on the transient fish assemblages – south-eastern coast of Brazil

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