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Climate change effects on illegal, unreported and unregulated fishing

A range of human pressures is threatening the sustainability of marine fisheries. Amongst those, overfishing, partly driven by Illegal, Unreported and Unregulated (IUU) fishing, is a major stressor. Thirty percent of global fish catch goes unreported, found a recent study by Nereus Program collaborator Sea Around Us.

But the relationship between IUU fishing and climate change is a new topic. I speculate that climate change impacts on fisheries may indirectly increase IUU fishing.

The status and future of bluefin tunas in our global ocean: The Bluefin Futures Symposium

by Guillermo Ortuño Crespo

For three days from January 18th to 20th, Monterey, California, has become an aggregation hotspot for more than 100 of the world’s foremost experts on the conservation and management of the three bluefin tuna species that inhabit our global ocean. The Bluefin Futures Symposium represents the first-ever international gathering of leading science, policy, industry and conservation leaders to address the current stock status, research efforts and management uncertainties, topics which hold the key to ensuring the future sustainability of harvesting these ocean predators.

Sea Around Us study finds 30 per cent of global fish catch is unreported

Countries drastically underreport the number of fish caught worldwide, and the numbers obscure a significant decline in the total catch.

The new estimate, released today in Nature Communications, puts the annual global catch at roughly 109 million metric tons, about 30 per cent higher than the 77 million officially reported in 2010 by more than 200 countries and territories. This means that 32 million metric tons of fish goes unreported every year, more than the weight of the entire population of the United States.

Rebecca Asch gives lecture on climate change and seasonality in the oceans

Climate change is resulting in the earlier arrival of spring conditions in many ecosystems around the world. Rebecca Asch, Nereus Fellow (Princeton), gave a lecture at Wellesley College, USA, on November 13 entitled “Climate Change and Seasonality in the Oceans: How will Changing Seasonal Cycles Affect Marine Food Webs?” This was an invited talk sponsored by the Department of Biological Sciences.

Collaboration with Stockholm Resilience Centre on global fish biomass distribution model

Colleen Petrik, Senior Nereus Fellow at Princeton, visited the Stockholm Resilience Centre at the University of Stockholm from October 26 to 30 to collaborate with former Nereus Fellow James Watson. While with the Nereus Program, Watson developed a simulation model of global fish biomass distribution. This model demonstrated that the ability of fish to swim towards high food and growth environments had a drastic effect on the spatial distribution of fish biomass, especially that of top predators.

Nereus at IMBER IMBIZO IV in Trieste, Italy

The fourth Integrated Marine Biogeochemistry and Ecosystem Research (IMBER) IMBIZO (a Zulu word meaning ‘meeting or gathering’) workshop took place at the Istituto Nazionale di Oceanografia and Geofisica (OGS) in Trieste, Italy, from October 26 to 30th, 2015. The meeting gathered scientists and researchers from all over the world to discuss how we integrate knowledge of marine and human systems, and address multiple scales and stressors.

Fish alter migration patterns as global waters warm

Water spills from the edge of a giant, melting iceberg on the cover of the November 2015 issue of Science.

The special issue focused on the effects of climate change on our ocean systems, and highlighted research by Dr. William Cheung, an Associate Professor with the Changing Ocean Research Unit at the University of British Columbia, and Director (Science) of the Nereus Program. The journal used a map Dr. Cheung and his team created that describes the effects of changing water temperatures on fish species migration.