27 - Marine Biodiversity
For the moment, marine biodiversity is more endangered by overfishing than by climate change or acidification. But in the long term, these two phenomena will considerably increase their pressure. The FAO estimates that between 660 and 820 million people worldwide, about 10% of the world's population, are directly or indirectly dependent on fisheries and aquaculture.
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2Causes
1Consequence
Yes, because of fishing.
4Other possible causes
There's probably some sort of link here...
With this link, we highlight all the degradations that humans are inflicting on marine life such as plastic pollution and overfishing. It's irrelevant to climate change, but it's interesting to make the connection anyway.
Calcification problems do not only affect pteropods and coccolithophores. Coral reefs are also affected, for example, so this link is acceptable.
Oils slicks in the ocean are an example of a link between fossil fuels and marine biodiversity.