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ICE WORLD
More Antarctic protections urged on World Penguin Day
By Martin PARRY
Sydney (AFP) April 25, 2017


The world needs to do more to protect the Antarctic wilderness and its wildlife, scientists warned Tuesday, as they marked World Penguin Day.

The flightless seabirds -- a favourite with children for their clumsy, waddling gait -- offer a useful yardstick for researchers to judge the health of their habitat.

"Penguins are great ambassadors for understanding the need to conserve Southern Ocean resources," Christian Reiss, an Antarctic fisheries biologist at the US-based National Oceanic and Atmospheric Administration, told AFP.

"They are the iconic species of this ecosystem and the fate of their populations will depend on effective ecosystem-based management, including understanding the role of climate change and human impacts."

A Pew study in 2015 showed two thirds of the world's 18 penguin species, which range from the volcanic Galapagos Islands on the equator to the frozen sea ice of Antarctica, were in decline.

Antarctic penguins in particular are vulnerable to climate change, with shifting ice reducing habitat while warming seas affect their prey.

Scientists blame intense fishing pressure on forage species such as krill, as well as pollution, degradation of breeding grounds, and climate change.

According to the International Union for Conservation of Nature Red List of Threatened Species, only two types of penguin -- Adelie and King -- are increasing in numbers.

- Struggling to adapt -

Penguins live most of their lives at sea but return to land to breed and molt, making them important gauges of marine health that are easily accessible to researchers, who can then develop realistic and effective conservation ocean strategies.

Stanford University marine scientist Cassandra Brooks, who specialises in the Antarctic, said penguin populations on the frozen continent were both increasing (Adelies in the Ross Sea) and decreasing (Chinstraps in the Antarctic Peninsula area).

"In short, we know climate change is dramatically changing the Antarctic environment and that the animals that comprise the Southern Ocean ecosystem are struggling to adapt," she told AFP.

"Scientists need to continue working to untangle the complex interactions between climate change and penguin populations."

A deal sealed last year by the Conservation of Antarctic Marine Living Resources (CCAMLR) -- an international grouping tasked with overseeing conservation and sustainable exploitation of the Antarctic Ocean -- will see a massive US and New Zealand-backed marine protected area established in the Ross Sea.

The sea is one of the last intact marine ecosystems in the world, home to penguins, seals, Antarctic toothfish, whales and huge numbers of krill, a staple food for many species.

It is considered critical for scientists to study how such ecosystems function and to understand the impact of climate change on the ocean.

But two other proposals -- the Australia and France-led East Antarctica sanctuary and a German plan to protect huge tracts of the Weddell Sea -- are still under negotiation.

The East Antarctica sanctuary proposal spans one million square kilometres (386,000 square miles) while the Weddell Sea plan would extend from the southeast of South America over an area of some 2.8 million square kilometres.

"A network of Southern Ocean MPAs (marine protected areas), which include no-take zones in areas important to penguin life history, may help ensure their survival in an uncertain future," said Brooks.

The CCAMLR holds its annual meeting in Hobart, Australia, in October.

ICE WORLD
Water is streaming across Antarctica
New York NY (SPX) Apr 20, 2017
In the first such continent-wide survey, scientists have found extensive drainages of meltwater flowing over parts of Antarctica's ice during the brief summer. Researchers already knew such features existed, but assumed they were confined mainly to Antarctica's fastest-warming, most northerly reaches. Many of the newly mapped drainages are not new, but the fact they exist at all is signifi ... read more

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Beyond the Ice Age

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