Fish Get Freaky Sooner As Ocean Heats Up

In an interesting new study by CSIRO, it has been found that the breeding patterns of various marine life are changing as ocean temperatures rise due to Global Warming.

Research has found that as the ocean’s surface temperatures rise, the breeding and migration times of various marine species have been advancing. It has been determined that on average, these patterns have been advancing at a rate of 4.4 days each decade, as opposed to an advance of between 2.3 – 2.8 days each decade for land based species.

Interesting also is that despite the ocean’s surface temperatures rising at a rate three times slower than land air temperatures, marine life are reacting to the effects at a significantly faster rate than terrestrial species.

It was also found that South-East tropical and subtropical species of fish, molluscs and plankton are shifting much further south through the Tasman Sea. And sea birds and various types of cool-water seaweeds have been shifting further south through the Indian Ocean from regions north of Perth.

CSIRO marine ecologist Dr Elvira Poloczanska said that “essentially, these findings indicate that changes in life events and distribution of species indicates we are seeing widespread re-organisation of marine ecosystems”. She explains the phenomenon further; “We expect marine organisms to have responded to recent climate change, with magnitudes similar to or greater than those found for terrestrial species.”

These shifts in behaviour may result in shifts in habitat areas, leading to significant repercussions for current recreational and commercial fishing areas, as well as new potential for other areas.

To read more about CSIRO’s study, click here.

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