Trends in landings of fish species potentially affected by climate change in Portuguese fisheries

Teixeira, Conceição Pequito; Gamito, Rita; Leitão, Francisco; Cabral, Henrique N.; Erzini, Karim; Costa, M. J.

doi:10.1007/s10113-013-0524-5

Cited by 46 publications

(40 citation statements)

References 87 publications

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“…The presence of a strong relationship between landings and warming oceans has been demonstrated by several authors Pitcher and Cheung, 2013;Teixeira et al, 2013), confirming that the poleward movements of thermophilic species, due to the increasing SST, is affecting fisheries, both in qualitative and quantitative terms.…”

Section: Introductionsupporting

confidence: 53%

The Influence of the Spatial Scale on the Fishery Landings-SST Relationship

et al. 2016

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Possible effects of the spatial scale of analysis on the relationship between fishery landings and the water temperature in the Mediterranean Sea have been investigated using the FAO capture database . The analysis was performed by dividing species in three thermal affinity categories: cold, temperate and warm-water species. Results showed significant changes in fishery landings composition during the last four decades, in terms of the relative contribution of cold, temperate and warm-water species to landings; moreover, the presence of a strong influence of water warming in determining the landings temporal pattern has been confirmed. This relationship, however, resulted to be not homogenous across the tested spatial scales (entire Mediterranean basin, three main sub-basins, eight FAO areas). The best models (based on the Akaike Information Criterion), were the ones fitted at the finer spatial definition (i.e., the eight FAO areas) for all the three thermal affinity categories. The recorded relationship showed clear differences in terms of direction, depending on both areas and thermal affinity groups. Cold-water species showed a negative relationship with the increasing water temperature in all the FAO areas, being partially replaced by temperate-water ones, with the exception of the Adriatic and Black Sea (the coldest areas in the Mediterranean basin), where a moderate increase in the water temperature is still favoring the cold affinity group. This kind of results could be useful within the context of the management plans definition, within a context of climate changes.

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Section: Introductionsupporting

confidence: 53%

The Influence of the Spatial Scale on the Fishery Landings-SST Relationship

et al. 2016

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“…an increase of warmer-water species in relation to colder-water ones, since shifts in distribution are expected to affect their availability to fisheries (Rijnsdorp et al 2009;Cheung et al 2013). Landings may change in relation to global warming (Teixeira et al 2014), and this may induce changes in the intensity and spatial distribution of fishing effort (Haynie and Pfeiffer 2012). The exposure of a fishing community will be greatest where other pressures, such as overfishing, are already stressing the socialecological system (Miller et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Climate impact on Italian fisheries (Mediterranean Sea)

et al. 2015

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Global warming is increasingly affecting marine ecosystems and ecological services they provide. One of the major consequences is a shift in species geographical distribution, which may affect resources availability to fisheries. We computed the mean temperature of the catch (MTC) for Italian catches from 1972 to 2012 to test if an increase of warmer-water species against colder-water ones was observed. We further analysed the relationship among MTC, landings, fishing effort and climatic factors through a Linear Mixed Models approach. Global MTC increased at a rate of 0.12°C per decade. Though, by considering the influence of sea surface temperature (SST), a strongest increase (0.31°C) was estimated in southernmost areas, while in the northernmost basin (Northern Adriatic Sea) a decrease of 0.14°C was observed. SST resulted the most relevant driver, and the relationship between MTC and SST showed a high spatial variability both in terms of strength and sign, being positively stronger in southernmost areas while negative in the northernmost basin. The result is probably underestimated since several psychrophilous and thermophilous species were not included in the analysis. However, it seems that a change towards warmer-water species has already occurred in Italian marine ecosystems. Conversely, total landings temporal dynamics seem mostly driven by changes in fishing effort rather than by MTC and climatic factors. Consequently, fishery management strategies need to focalize primarily on fishing effort reduction, in order to reduce the pressure on the stocks while increasing their resilience to other stressors, among which global warming.

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“…Climate-induced changes in Portuguese fisheries have already been reported (Gamito et al 2013(Gamito et al , 2015Teixeira et al 2014). There has been a reduction in the intensity and frequency of rainfall in Portugal (IPCC 2007), which will also decrease the drainage of Portuguese rivers into coastal areas.…”

Section: Discussionmentioning

confidence: 99%

“…River flow influences a myriad of environmental factors that are determinant for the habitat characteristics of estuarine and coastal systems, such as rates of sediment delivery, salinity, turbidity and temperature (Gillson 2011). In fact, temperature in the Portuguese coast has been increasing (Belkin 2009;IPCC 2007), with observed effects on fisheries (Gamito et al 2013(Gamito et al , 2015Teixeira et al 2014). However, the combined effect of changes in temperature and river flow in the future remains unknown.…”

Section: Discussionmentioning

confidence: 99%

“…The Portuguese coast is mainly North-South oriented and is located in a biogeographic transition zone, between temperate and subtropical waters, a Corresponding author: rgamito@fc.ul.pt where several temperate and subtropical fish species have their southern or northern distribution limit (Briggs 1974). Ecological responses to recent climate change have been observed in Portuguese waters (Cabral et al 2001;Vinagre et al 2009) and the rising sea surface temperature in the region has been linked to fisheries landings (Gamito et al 2013(Gamito et al , 2015Teixeira et al 2014). A decrease in the intensity and frequency of rainfall has also been observed in Portugal (IPCC 2007).…”

Section: Introductionmentioning

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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Trends in landings of fish species potentially affected by climate change in Portuguese fisheries

Cited by 46 publications

References 87 publications

The Influence of the Spatial Scale on the Fishery Landings-SST Relationship

The Influence of the Spatial Scale on the Fishery Landings-SST Relationship

Climate impact on Italian fisheries (Mediterranean Sea)

Are Portuguese coastal fisheries affected by river drainage?

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