Variabilidad climática y su impacto en pesquerías de pequeña escala de invertebrados en América Latina

Defeo, Omar; Castrejón, Mauricio; Ortega, Leonardo; Kuhn, Angela; Álava, Anita de

doi:10.5380/dma.v32i0.36217

Cited by 6 publications

(5 citation statements)

References 49 publications

(70 reference statements)

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“…This variability is due to the characteristics of the Chilean coast, which is in general very exposed, with fluctuating winds that generate upwelling periods in localized foci, which together generate variability in circulation and temperatures (Moraga et al, 2001). This affects the populations of invertebrates mainly in the processes of larval development and recruitment, which is then reflected in variations in abundance, biomass, age structure, and distribution patterns of fisheries resources (Parada et al, 2013;Defeo et al, 2014). These characteristics of great environmental variability and consequent dynamics of species together explain what happens within the TURF dynamic.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, the variability of the recruitment is transmitted directly to the captures. The effects of this great variability have largely overcome the impact of the management measures implemented to recover the populations (Defeo et al, 2014). The TURFs as management strategy seek to maintain exploitation over time, however this does not consider the variability to which they are exposed and how sensitive the species exploited are to that variability.…”

Section: Discussionmentioning

confidence: 99%

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Sustainability Analysis of the Benthic Fisheries Managed in the TURF System in Chile

Ramos

Stotz

2020

International Journal of the Commons

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Territorial use rights in fisheries (TURF) are considered to aid to the sustainability of smallscale fisheries, because they remove the perverse incentives, which sustain the tragedy of the commons. Nevertheless, a comprehensive evaluation of the implementation of TURFs is lacking. Chile offers a unique opportunity, because an extensive system for benthic fisheries has been implemented, with at present hundreds of TURFs along the coast. This study analyzes the sustainability of all the TURFs (109) along a stretch of 800 Km of coast, using population, productive, economic, social and institutional indicators. The information was obtained from the technical reports and monitoring each TURF has to prepare for the authority each year, databases the authority has and interviews with artisanal fishermen. Three states of TURFs were identified: unsustainable, poorly sustainable and sustainable. The resources exploited in the analyzed TURFs are the chilean abalon or "loco" (Concholepas concholepas), the key hole limpets "lapa negra" (Fissurella latimarginata), and "lapa rosada" (Fissurella cumingi), the kelps "huiro negro" (Lessonia berteroana), and "huiro palo" (Lessonia trabeculata), the surf clam "Macha" (Mesodesma donacium), the scallop "ostión del norte" (Argopecten purpuratus) and the seaurchin "erizo rojo" (Loxechinus albus). Results show general low performance for population, production and economic indicators, but good performance for social and institutional indicators. Overall the system shows a poor sustainability, which principally means unstable populations, landings and income in most of the TURFs. This result, which differs from most published analyses of the system, is explained mainly by the impossibility to reach a stable fishery through management of so small areas, given the natural variability of the species and the general environment. The good performance of some TURFs cannot be explained by a single factor, which is consistent with the complexity of the system, which makes it little amenable for proper management.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Sustainability Analysis of the Benthic Fisheries Managed in the TURF System in Chile

Ramos

Stotz

2020

International Journal of the Commons

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“…PT is part of the protected area of the Santa Lucía River saline wetlands in Uruguay (IMPO 2015), which is a feeding and nursery ground for sh of economic interest (Jaureguizar et al 2003), and for relevant invertebrates and aquatic bird species (Merentiel 2014; Silveira 2022). The coastal zone of the protected area, including PT, supports an artisanal shery targeting the whitemouth croaker Micropogonias furnieri, the southern king weak sh Macrodon atricuada, and the menhaden Brevoortia aurea (Defeo et al 2009).…”

Section: Study Areamentioning

confidence: 93%

“…Important commercial sh species, such as croakers, weak sh, and menhaden, spawn in the Rio de la Plata (RDP) (Defeo et al 2009). Unlike most estuaries, sh species in the RDP are characterized by spawn pelagic eggs (Berasategui et al 2004).…”

Section: )mentioning

confidence: 99%

Estuarine Front Dynamics: A Key Driver of Fish Larvae Dispersion in a Large Subtropical Estuary

Muñoz

Bonilla

Arocena

et al. 2023

Preprint

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Estuarine fronts are critical in the retention and dispersion of ichthyoplankton. This study evaluates the response of ichthyoplankton assemblage to front dynamics in one of the world's largest estuaries, the Río de la Plata. Surveys were conducted between October 2014 and December 2017, using the turbidity front (TF) location determined by satellite imagery as a proxy for the estuarine front. Although most larval taxa belonged to the freshwater category, the highest abundances were found in the estuarine category. Contrary to most estuaries, the incidence of pelagic egg spawners was high in the studied estuary. The highest species richness and abundance occurred during spring and summer, linked to the spawning seasons and locations. TF dynamics was the primary driver of interannual variability in ichthyoplankton assemblages, revealing opposite trends with ENSO (El Niño-Southern Oscillation) events. A strong El Niño event (2015–2016) led to decreased total abundance and dominance of freshwater larvae with a seaward shift of the TF, while a weak La Niña event (2016–2017) resulted in increased abundance of marine larvae with the retraction of the TF. Based on current climatic predictions, it is likely that the estuarine frontal zones will be affected in the future, which could have a significant impact on ichthyoplankton assemblage. Therefore, coastal conservation is critical and should be integrated into management plans to preserve ichthyoplankton dynamics and fish populations.

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“…The increase in the number and magnitude of climatic factors in Latin America and globally, acting on multiple temporal and spatial scales (Hall 2011), has generated the need to understand how climate variability and anthropogenic effects affect the performance of SSFs (Defeo et al 2014). The understanding of climate variability includes processes in a wide range of spatial and temporal scales, the correlation of these processes concerning anthropogenic activities, such as fishing, has scientific importance (Poveda 2004).…”

Section: Introductionmentioning

confidence: 99%

Climate variability and small-scale fisheries of the Albuquerque Cays Island, insular Colombian Caribbean

González¹,

Ferro²,

Olaya³

et al. 2022

Lat. Am. J. Aquat. Res.

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The relationship between climate variability and the small-scale fishery (SSF) of the Albuquerque Cays was studied from 2004 to 2018. The environmental variables analyzed were: sea surface temperature (SST), wind magnitude, and chlorophyll (Chl-α). The fishery is multi-species; 410 individuals were identified, belonging to 4 orders, 15 families, and 62 species, of which 38.7% are reef, 35.5% demersal, and 25.8% pelagic. The most dominant species were Caranx latus, Elagatis bipinnulata, Coryphaena hippurus, Lutjanus vivanus, Ocyurus chrysurus, Thunnus atlanticus, Sphyraena barracuda, Canthidermis sufflamen, Etelis oculatus, Acanthocybium solandri, Lutjanus jocu, Balistes vetula, Lutjanus buccanella, followed by Rhomboplites aurorubens and Mycteroperca bonaci. The pelagic species that contribute the most in biomass and commercial importance are S. barracuda, A. solandri, T. atlanticus, and E. bipinnulata, the most important due to their high market value. A significant correlation was found among SST, Chl-α, wind magnitude, and catch per unit effort (CPUE) anomalies. The highest CPUE values occurred in January, March, June and September were associated with the passage of cold fronts and hurricanes, giving way to new fishing opportunities and conservation of some resources.

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Variabilidad climática y su impacto en pesquerías de pequeña escala de invertebrados en América Latina

Cited by 6 publications

References 49 publications

Sustainability Analysis of the Benthic Fisheries Managed in the TURF System in Chile

Sustainability Analysis of the Benthic Fisheries Managed in the TURF System in Chile

Estuarine Front Dynamics: A Key Driver of Fish Larvae Dispersion in a Large Subtropical Estuary

Climate variability and small-scale fisheries of the Albuquerque Cays Island, insular Colombian Caribbean

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