The rapid development of fisheries in the 1950’s facilitated declines in predator biomass, overexploitation, collapse of fish stocks, and degradation of marine habitats. A new PLOS ONE paper investigates past changes in trophic functioning of marine ecosystems cause by human-induced changes in species assemblages by applying an ecosystem approach to fisheries.
Managing living marine resources in a dynamic environment: The role of seasonal to decadal climate forecasts
Variations in climate lead to fluctuations and changes in fish stocks; they can have effects on such things as fish behaviour, distributions and growth. Because of this, fisheries management has to respond dynamically to these fluctuations. If management decisions are made primarily on past patterns, the negative impacts can be exacerbated, especially with climate change.
The ten most popular stories on the Nereus Program website in 2016, including on El Ninos, fishing subsidies, Brexit, science fiction prototyping, the TPP, salps, jellyfish fisheries, vaquita and the South China Sea.
Biogeochemical regions of the Mediterranean Sea: an objective multidimensional and multivariate environmental approach
The study “Biogeochemical regions of the Mediterranean Sea: an objective multidimensional and multivariate environmental approach” was recently published in Progress in Oceanography with Nereus Fellow Gabriel Reygondeau (UBC) as the lead author. In the paper, a biogeochemical/ecological spatial framework was defined for ecosystems of the Mediterranean Sea.
“Spatial differentiation of marine eutrophication damage indicators based on species density” was recently published in Ecological Indicators, co-authored by Nereus Alumnus Miranda Jones (UNEP-WCMC) and Nereus Director of Science William Cheung. The paper looks at developing an index to assess eutrophication effects on marine ecosystems and introducing an ecosystem response indicator to nitrogen loadings to coastal waters.
This chapter explores recent and future impacts of rapid temperature changes in the North Sea, identified as a ‘hot spot’ of climate change, with respect to biological, operational, and economic concerns in fisheries. The region is one of the most important fishing grounds in the world.
By Jenn Paul Glaser, Nereus Program Consulting Artist
Our goal was to produce painterly digital collages that were conceptual in nature but grounded in state-of-the-art research. The culminating body depicted a total of about 30 species within at least 16 diverse marine ecosystems.
The ocean has provided incredible services for us — taking up 28% of carbon emissions since preindustrial levels and absorbing 93% of the Earth’s excess heat since the 1970s — but because of this, it is undergoing changes. In order to manage ocean ecosystems and resources in the future, we must begin to understand what those changes may look like using climate change impact projections.
Salps, a type of gelatinous zooplankton, are often confused with jellyfish and while jellyfish research has increased drastically, salps have been ignored. The authors write that there “has been no comprehensive study on the biology or ecological impact of salps in almost 20 years”. This paper looks at four misconceptions about salps, including that salps are jellyfish, salps are rare, salps are trophic dead ends, and salps have a minor role in biogeochemical cycles.
Around the world in ten years: Phytoplankton are moving around the oceans faster than previously thought
Floating marine species and objects can drift from one area in the surface ocean to any other spot across the globe in less than a decade, finds a new study published in Nature Communications by Nereus Program alumnus James Watson, currently a research scientist at Stockholm Resilience Centre.