(Credit: Gerald Mayr) An international team of scientists have announced the discovery of a previously unknown species of prehistoric penguin. The bird waddled around off the east coast of New Zealand between 55 and 60 million years ago. And it was a giant as far as penguins go. (From NPR/By Rhitu Chatterjee) -- The [...]
There are not many jellyvores in the world, or so scientists have long thought. Gelatinous sea animals, like jellyfish and ctenophores, have traditionally been regarded as “dead ends” in food webs. Because they are so low in calories (jellyfish are about 95 percent water), it was thought that most predators would not benefit from eating them. But a recent study has identified a new, unexpected jelly-eater: penguins.
If projections for melting Antarctic sea ice through 2100 are correct, the vanishing landscape will strip Emperor penguins of their breeding and feeding grounds and put populations at risk. But like other species that migrate to escape the wrath of climate change, can these iconic animals be spared simply by moving to new locations? According to new research led by the Woods Hole Oceanographic Institution (WHOI), they cannot. Scientists report that dispersal may help sustain global Emperor penguin populations for a limited time, but, as sea ice conditions continue to deteriorate, the 54 colonies that exist today will face devastating declines by the end of this century. They say the Emperor penguin should be listed as an endangered species. The study was published in the June 6, 2017 edition of the journal Biological Conservation.
The yellow-eyed penguin—a rare species named for its distinctive band of golden feathers—has become one of New Zealand’s most prominent cultural icons (second to the kiwi, of course). Images of the penguins are stamped on the country’s $5 notes and splashed across airport billboards. Tourism centered on the birds contributes some $100 million NZD to the local economy each year. But a new study suggests that these beloved penguin populations are perilously declining, Kendra Pierre-Louis reports for Popular Science.
The number of Adélie penguins living in East Antarctica may be double what scientists previously thought. New data collected by researchers at the University of Adelaide in Australia estimates the population number at nearly six million—almost four million higher than previous estimates.
Member Highlight: NASA Collaboration Allows Citizen Scientists To Lend A Hand In Penguin Conservation
Tracking penguin populations in Antarctica is a critical component of understanding environmental changes in the region.Now, thanks to a collaboration between NASA and Stony Brook University, citizen scientists can lend a hand through the use of a new, interactive, and user-friendly website that tracks Antarctic penguin populations and provides information to scientists.
A forty year study on a remote Antarctic island shows that while populations of two penguin species are declining, a third is increasing. Analysis of census data from Signy Island in the South Orkney Islands reveals that, between 1978 and 2016, the number of chinstrap penguin pairs declined by nearly 70 per cent. Pairs of Adélie penguins dropped by more than 40 per cent but the number of gentoo penguin pairs more than trebled.
Two species of sub-Antarctic penguin have surprised scientists in New Zealand by travelling up to 15,000km (9,320 miles) during six months spent at sea.
The new study, published in the journal Scientific Reports on Wednesday, looked at various levels of warming expected over this century as predicted by the Intergovernmental Panel on Climate Change, the United Nations' group that is the gold standard for climate forecasts.
(Click to enlarge) Adelie penguin (Pygoscelis adeliae) (Credit: Wikimedia Commons) A colony of Adelie penguins faces being wiped out after an iceberg the size of Rome became lodged in their bay.(From the Independent/by May Bulman ) -- An estimated 150,000 penguins of Cape Denison in Commonwealth Bay have been killed since the iceberg measuring 1,120 square [...]
A study of how climate change has affected emperor penguins over the last 30,000 yrs found that only 3 populations may have survived during the last ice age, and that the Ross Sea in Antarctica was likely the refuge for one of these populations.
In a part of the world that is experiencing the most dramatic increase in temperature and climate change, two very similar species of animals are responding very differently.
The first global census of the Adélie penguin, long considered a key indicator species to monitor and understand the effects of climate change and fishing in the Southern Ocean, has revealed its population (3.79 million breeding pairs) to be 53 percent larger than previously estimated.
A long-term study of the links between climate and marine life along the rapidly warming West Antarctic Peninsula reveals how changes in physical factors such as wind speed and sea-ice cover send ripples up the food chain, with impacts on everything from single-celled algae to penguins.
(Click to enlarge) The study was conducted by lead author Stephanie Jenouvrier, a biologist with the Woods Hole Oceanographic Institution (WHOI), and colleagues at the Centre d’Etudes Biologiques de Chizé (French Centre National de la Recherche Scientifique), the National Center for Atmospheric Research, the Cooperative Institute for Research in Environmental Sciences, and the University [...]
Finding Elusive Emperor Penguins: Both Surveyors and Satellites Needed to Study Remote Penguin Populations
Field surveys and satellites complement each other when studying remote penguin populations, according to research published June 25 in the open access journal PLOS ONE by André Ancel from the CNRS at Strasbourg and colleagues.
A new study led by the University of Minnesota offers new insights on the long-term future of emperor penguins by showing that the penguins may be behaving in ways that allow them to adapt to their changing environment better than we expected.
Big Thaw Projected for Antarctic Sea Ice: Ross Sea Will Reverse Current Trend, Be Largely Ice Free in Summer by 2100
Antarctica's Ross Sea is one of the few polar regions where summer sea-ice coverage has increased during the last few decades, bucking a global trend of drastic declines in summer sea ice across the Arctic Ocean and in two adjacent embayments of the Southern Ocean around Antarctica.
A proposal by the United States and New Zealand to create a huge ocean reserve in Antarctic waters has been sharply reduced in scale after opposition from Russia and other nations with large fishing industries.
Emperor penguins (Aptenodytes forsteri) are famous for their dapper outerwear, but that feather coat actually gets colder than the surrounding frigid air, according to a study published online today in Biology Letters.
If global temperatures continue to rise, however, the Emperor penguins in Terre Adélie, in East Antarctica may eventually disappear, according to a new study by led by researchers from the Woods Hole Oceanographic Institution (WHOI).
From gannets to seagulls, puffins to penguins, all seabirds suffer the same drop in birth rates when the supply of fish drops to less than a third of maximum capacity.
A Yale-led study of the evolutionary history of Antarctic fish and their "anti-freeze" proteins illustrates how tens of millions of years ago a lineage of fish adapted to newly formed polar conditions -- and how today they are endangered by a rapid rise in ocean temperatures.
A drop in carbon dioxide appears to be the driving force that led to the Antarctic ice sheet's formation, according to a recent study led by scientists at Yale and Purdue universities of molecules from ancient algae found in deep-sea core samples.
Penguin populations have plunged by as much as 50 percent during the past three decades in the West Antarctic Peninsula and Scotia Sea, scientists report.
The eighth annual Penguin Bowl lived up to its name as Antarctic conditions hit the Three Rivers region and dumped over 53 centimeters of snow on the Pittsburgh Zoo.