National News

Fish, corals and trees react as one to changing climate

Research shows between 1984 and 2003 the growth of two types of marine fish and a coral slowed during El Niño years when waters were cooler, whereas in La Niña years, with warmer sea temperatures and generally more rainfall, growth rates increased. This would seem to spell good news as oceans are predicted to continue warming. Read more about this UWA Oceans Institute study.

CSIRO and UTAS: Warmer seas in Tassie

Felt a little hot under the collar this summer? Analysis of water temperatures around Tasmania show that seas off the east coast were a whopping 4.4 degrees Celsius above average, partly due to the warm East Australian Current extending southwards. Read more in The Conversation.

Tasmanian salmon: Hope falling water temperatures will help local farmers

Tasmanian water temperatures are beginning to fall after a hot summer, signalling some relief on the way for local salmon growers.  Salmon farmer Tassal has blamed warm waters for its withdrawal from two tenders for supply contracts with Coles because the temperatures were impacting on the growth rates for its farmed fish. Read the full story at ABC News.

Game fish follow warm route south

There was a summer spike in strange marine sightings in the South West/Capes region [of WA], as fish typically found in the State’s north made their way down via the warming Leeuwin Current. Spanish mackerel, marlin and redthroat emporer were just a handful of fish species recently spotted along the South West coast, all of which generally favour the warmer northern waters, writes the Busselton Dunsborough Times.

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