Gray’s Reef National Marine Sanctuary. Photo by NOAA’s National Ocean Service, Flickr.
Highly protected marine reserves can help mitigate against the impacts of climate change, a study by a team of international scientists has concluded.
Scientists say reserves can help marine ecosystems counter fight five key impacts of climate change: ocean acidification; sea-level rise; increased intensity of storms; shifts in species distribution, and decreased productivity and oxygen availability.
Photo by Tak, Flickr.
Twenty-three experts involved in the study “Antarctica and the strategic plan for biodiversity,” recently published in PLoS Biology, debunked the popular view that Antarctica and the Southern Ocean are in a better environmental shape than the rest of the world. In fact, the difference between the status of biodiversity in the region and planet Earth as a whole is negligible.
Some artisanal fleets in West Africa have grown so much in terms of number of boats, vessel size and capacity, and the aggregate engine power that they deploy that they have become comparable to the smaller industrial fleets operating in the region.
A new study by the Sea Around Us project reveals that, in the past 60 years, total artisanal fishing effort in the waters that extend from the coast of Morocco to the coast of Angola has increased by 10-fold.
Photo by Matana_and_Jes, Flickr
New research supports the creation of more marine reserves in the world’s oceans because, the authors say, fish can evolve to be more cautious and stay away from fishing nets.
The research suggests that by creating additional “no-take” areas, some fish will stay within marine reserves where they are protected from fishing. While other fish will move around the ocean, these less mobile fish will continue to live in the protected areas, pass this behaviour on to their offspring, and contribute to future generations, increasing the overall stock.
Every year for the past 60 years, an average of 20 million tonnes of fish caught in the global ocean have not been used to nourish people.
A new study emerging from the Sea Around Us project at the University of British Columbia’s Institute for the Oceans and Fisheries reveals that from 1950 to 2010, 27 per cent of commercial marine landings were diverted to uses other than direct human consumption.
This trend has not changed in recent years and it poses serious questions regarding food security, as most of the diverted fish are classified as food-grade or prime food-grade.