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Oceanic warming causing plankton decrease

The amount of phytoplankton – tiny marine plants – in the top layers of the oceans has declined markedly over the last century, research suggests.

Writing in the journal Nature, scientists say the decline appears to be linked to rising water temperatures.

They made their finding by looking at records of the transparency of sea water, which is affected by the plants.

The decline – about 1% per year – could be ecologically significant as plankton sit at the base of marine food chains.

Read the original article at: BBC News

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