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In Deep Water
A Pretty Kettle of Fish
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News - Sockeye Salmon Populations at Risk

News - Sockeye Salmon Populations at Risk | In Deep Water | Scoop.it

Salmon populations are exposed to many human threats, including overfishing, mixed-stock fisheries, habitat loss, habitat degradation, negative genetic and ecological interactions with hatchery fish, disease and parasites from fish farms. These threats operate at both the local and broad geographic scale, singularly or in various combinations and with varying degrees of intensity. Climate change is likely to increase risk to salmon in the future, particularly those already vulnerable in southern locations.

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Jellyfish on the rise: study

Jellyfish on the rise: study | In Deep Water | Scoop.it
Jellyfish are increasing in the majority of the world's coastal ecosystems, according to the first global study of jellyfish abundance by University of British Columbia researchers.

 

Jellyfish directly interfere with many human activities – by stinging swimmers, clogging intakes of power plants, and interfering with fishing. Some species of jellyfish are now a food source in some parts of the world.


"By combining published scientific data with other unpublished data and observations, we could make this study truly global – and offer the best available scientific estimate of a phenomenon that has been widely discussed," says Daniel Pauly, principal investigator of the Sea Around Us Project and co-author of the study. "We can also see that the places where we see rising numbers of jellyfish are often areas heavily impacted by humans, through pollution, overfishing, and warming waters."

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