Catches of target species and bycatches of an artisanal fishery: The case study of a trammel net fishery in the Portuguese coast

Batista, Marisa I.; Teixeira, Conceição Pequito; Cabral, Henrique N.

doi:10.1016/j.fishres.2009.07.007

Cited by 73 publications

(61 citation statements)

References 32 publications

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“…Sole landings are particularly relevant in the central coast, as 60% of total sole landings occur there (Batista et al 2009;Teixeira et al 2011). In fact, in the present work, landings of this group of species were higher in the Tejo study area.…”

Section: Discussionsupporting

confidence: 40%

“…Ria de Aveiro is a shallow coastal lagoon system with large intertidal areas, where S. officinalis finds adequate conditions for spawning (Pereira et al 2009). The variable month was also included in the model, which would likely be explained by the seasonality of cuttlefish fisheries, which target S. officinalis spawners inside estuarine systems (Batista et al 2009;Gamito et al 2015). No relationship between river drainage and landings of S. officinalis was found.…”

Section: Discussionmentioning

confidence: 99%

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Are Portuguese coastal fisheries affected by river drainage?

Gamito

Vinagre

Teixeira

et al. 2016

Aquat. Living Resour.

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-The Portuguese coast is particularly adequate for studies on the impact of climate change on fisheries, as it has faced an increase in both air and sea surface temperature and a decrease in intensity and frequency of rainfall. Ecological responses to climate change have already been observed in Portuguese waters, with consequences in fisheries. Regional climate models have predicted a further decrease in rainfall in Portugal by the end of the century, which will have a strong impact on the runoff into coastal areas. River drainage affects the physical, chemical and biological properties of coastal ecosystems, regulating habitat availability and favouring their productivity. The present study analysed the influence of river drainage on landings of coastal ports in the vicinity of four hydrologically distinct estuaries. Unlike previous results obtained for the Mediterranean, no significant relationships between river drainage and landings were found. Relationships between drainage and landings can be inconsistent among regions and dependent on how strongly a food web relies on nutrients and organic matter of river origin. In the Portuguese coast, an upwelling regime is of particular importance for the richness and diversity of the coastal ecosystem and for fisheries. The complexity of the coastal upwelling phenomenon together with a possible interaction of several other smaller scale factors acting on recruitment of commercial species may mask the effects of river drainage on landings. Nevertheless, as accentuated decreases in rainfall have been predicted for Portugal, the resulting reduction in river drainage may still strongly impact fisheries in the future.

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Section: Discussionsupporting

confidence: 40%

Section: Discussionmentioning

confidence: 99%

Are Portuguese coastal fisheries affected by river drainage?

Gamito

Vinagre

Teixeira

et al. 2016

Aquat. Living Resour.

Self Cite

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“…In Portuguese waters it appears as a bycatch of several fisheries (Erzini et al 2006, Gonçalves et al 2007, Batista et al 2009). …”

mentioning

confidence: 99%

Age and growth of small red scorpionfish, Scorpaena notata (Actinopterygii: Scorpaeniformes: Scorpaenidae), a common discard species from the Portuguese fishery

Neves¹

2015

Acta Ichthyol. Piscat.

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“…Moreover, it was observed that discarded in tropical regions were mostly dominated by small bodied animals, whereas temperate and sub-polar fisheries discarded mainly commercially important larger bodied species (Alverson et al, 1994). Normally, fishermen retains all species that have some commercial value but when they can harvest only one or a few individuals, they will keep them for personal consumption, due to the low selling value (Batista et al, 2009;Goncalves et al, 2007). A similar practice, based on direct observation, is also observed for crab gill net fishermen in this area.…”

Section: Discussionmentioning

confidence: 76%

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Fazrul¹,

Hajısamae²,

Ikhwanuddin³

et al. 2015

Turk. J. Fish. Aquat. Sci.

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This study assessed bycatch composition and some factors affected assemblage from blue swimming crab fisheries in semi-enclosed Pattani Bay and offshore area, the Gulf of Thailand. Samples were collected from May 2013 to September 2014 by using crab gill net. One hundred seventy four of bycatches were found within proportion of 52.2% in the bay and 49.5% from offshore. Moreover, discarded species from the bay and offshore were 26.3% and 47.1%, respectively. The most dominant species in the bay was horse shoe crab (Carcinoscorpius rotundicauda) while offshore was scaly whipray (Himantura imbricate). Abundance of bycatch in the bay was affected both by habitat (P<0.005) and season (P<0.001) while abundance from offshore was affected only by season (P<0.05). Species richness of bycatch both in the bay and offshore were influenced significantly by season (P<0.001 and P<0.005, respectively). The most abundance bycatch in the bay was found in the inner bay while at 15m depth for offshore. The result of nMDS ordination indicated a separation of three major groups of assemblage in the bay; inner, middle and outer bay but there was no obvious segregation from offshore.

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Catches of target species and bycatches of an artisanal fishery: The case study of a trammel net fishery in the Portuguese coast

Cited by 73 publications

References 32 publications

Are Portuguese coastal fisheries affected by river drainage?

Are Portuguese coastal fisheries affected by river drainage?

Age and growth of small red scorpionfish, Scorpaena notata (Actinopterygii: Scorpaeniformes: Scorpaenidae), a common discard species from the Portuguese fishery

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