Emergent patterns in nature and society

Ocean acidification threatens fisheries, says UNEP – SciDev.Net

Scidev reports:

Rising CO2 emissions, a quarter of which eventually dissolve in the oceans to produce carbonic acid, have caused a 30 per cent drop in ocean pH values, reflecting an increase in ocean acidity, according to the report, produced by the UN Environment Programme (UNEP).

[…]

Acidification can reduce the growth and affect the development of smaller fish. For example, it can impair orientation and sense of smell in young clownfish, making them more vulnerable to predators.

A major concern, said the report, is that corals and shellfish may find it harder to form their skeletons, resulting in “significant future impacts on catches of crabs, mussels and other shellfish; species dependent on coral reefs and ones such as salmon that feed on smaller, shell-building organisms lower down the food chain”.

Fisheries and aquacultures are an important source of food and income for most of the world’s poorer communities, with around a billion depending on fish as their sole source of protein.

via Ocean acidification threatens fisheries, says UNEP – SciDev.Net.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s