El Niño Southern Oscillation (ENSO) effects on fisheries and aquaculture

Abstract

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The Impact of Climate Change Adaptation Strategies on Income and Food Security: Empirical Evidence from Small-Scale Fishers in Indonesia

“…Second, climate change affects the biological conditions of the ocean such as diseases, and changes in species distribution and species abundance. Third, it impacts the socioeconomic condition, such as disrupted fishing activities and reduced fishing productivity [5]. Grafton [6] claimed that climate change alters species, changing the distribution and mix of species that will have a rippled effect on marine and fisheries ecosystems.…”

Climate anomalies influence tooth growth patterns of South American sea lions

“…With regard to ENSO, South American sea lion populations from the Pacific ecosystem suffered significant population decline as a result of physical stress and starvation on females, juveniles, and pups during positive phases (Edwards, 2018;Oliveira, 2011;Oliveira et al, 2012). Along the southeastern coast of South America strong freshwater discharges, northerly wind anomalies, and upwelling during extreme El Niño events, generate an increase in the primary productivity along the continental shelf north of 45 S (Bertrand et al, 2020;Machado et al, 2013). In this sense, physical variations caused by ENSO are connected with weather in the rest of Southern Ocean, including the Southern Atlantic basin (Meredith et al, 2008;Stenseth et al, 2003;Trathan et al, 2003;White & Peterson, 1996).…”

“…However, our results did not indicate any ENSO effects on interannual variability of the width GLGs. Possibly, strong and positive events such as 1972-1973, 1982, and 1997-1998(Bertrand et al, 2020 could influence South American sea lion growth in Patagonia, while moderate events or even ENSO negative phases, have not influenced these populations. The latter could be due to a weak impact of environmental conditions on the food web during these events, which was mitigated by feeding strategies of South American sea lions.…”

Challenges for the development of environmentally sustainable cage culture farming in Lake Maninjau, Indonesia: an institutional perspective

“…El Niño, or more precisely the El Niño-Southern Oscillation (ENSO), and La Niña are periods of extreme weather across South East Asia and Africa triggered by sudden shifts in the surface temperature of the South-Eastern Pacific Ocean. El Niño and La Niña both resulted in severe negative effects on aquaculture production (New et al 2001;Gomez-Uchida et al 2018;Bertrand et al 2020). Specific to Lake Maninjau, a report from MoPW (2013) described that rain and strong wind, typical for La Niña conditions, triggers mixing and MFK events in the lake.…”