Tag: climate change

The looming extinction of the Maui dolphin

Maui’s dolphin. Photo by New Zealand Department of Conservation, Flickr

The world’s rarest and smallest known subspecies of dolphin, the Maui dolphin, is about to go extinct. Its population is down to 60 individuals from 2,000 in the 1970s.

Journalist Christopher Pala just launched a series of articles focusing on the reasons behind the disappearance of this subspecies of the Hector’s dolphin and the actions governments are taking (or not) to stop the death toll from rising.

Follow this link to read the first article of the series in Science.

Indigenous people eat 15 times more seafood than non-Indigenous people

indigenous-coastal-environments-landscape-map-center-01-660x465

Researchers from the Nereus Program at the University of British Columbia’s Institute for the Oceans and Fisheries developed a global database of over 1,900 Indigenous communities and estimated seafood consumption at 2.1 million metric tonnes per year or 2% of global catch.

In other words and as the infographic above shows, coastal First Nations consume 74 kg of seafood per capita, whereas the global average is 19 kg. Continue reading →

Impacts of climate change on contaminants in fisheries

Dr. Elsie Sunderland (left). Photo: Valentina Ruiz Leotaud.

Dr. Elsie Sunderland (left). Photo: Valentina Ruiz Leotaud.

By: Valentina Ruiz Leotaud.

On November 17th, the Nereus Program hosted a talk with a VIP guest speaker: Dr. Elsie Sunderland, the Thomas D. Cabot Associate Professor of Environmental Science and Engineering at the John A. Paulson School of Engineering and Applied Science at Harvard University.

In an hour-long presentation, which took place at UBC’s Green College, Dr. Sunderland summarized part of the work that her research group is undertaking on the biogeochemistry of global contaminants.

Many environmental contaminants biomagnify in marine food webs, reaching high concentrations in top predators, which means that they are posing health risks to humans and wildlife.

Sunderland started by saying that focusing just on carbon pollutants provides a very narrow view that ignores the vast array of substances affecting the environment. Even when policymakers think they are choosing the greenest options when it comes to energy generation, they might be doing quite the opposite.

Dr. Elsie Sunderland.

Dr. Elsie Sunderland.

Continue reading →

Climate change has impacted global fisheries for decades

CheungGraphic_web_editedA new paper from the Sea Around Us Project published in the journal Nature reveals that warmer ocean temperatures are driving marine species towards cooler, deeper waters, and this in turn, has affected global fisheries catches.

William Cheung, Reg Watson and Daniel Pauly used temperature preferences of fish and other marine species as a sort of “thermometer” to assess effects of climate change on the world’s oceans between 1970 and 2006. They found that global fisheries catches were increasingly dominated by warm-water species.

Click on the image to see how the catch composition of global fisheries has changed in different parts of the world.

To find out more about the research you can access the following resources:
Comment piece in Nature News & Views
Press release
Article published in Nature