Two specimens of chub mackerel in a basket

Mean Temperature of the Catch now available on Sea Around Us website

Two specimens of chub mackerel in a basket

Global warming is expected to push stocks of highly migratory straddling species in the Indo-Pacific, such as chub mackerel, from EEZs toward the high seas by mid-century. Photo by Matsumomushi, Wikimedia Commons.

Sea Around Us website users will now be able to access the Mean Temperature of the Catch (MTC), as an ecosystem indicator derived from the reconstructed catches of a large fraction of the 283 Exclusive Economic Zones (EEZs) presented on our website.

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New Zealand Fishing Boats

Overfishing and climate change impacts on New Zealand’s fish populations were hidden – until now

New Zealand Fishing Boats

New Zealand fishing boats. Photo by QFSE Media, Wikimedia Commons.

Pelagic-oceanic fish commonly caught in warmer waters, such as skipjack tuna and blue mackerel, have been increasing in New Zealand’s waters since the 1950s, while cold-water species such as southern bluefin tuna display strong reductions in overall catch from the 1970s onwards, new research has found.

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