Showing posts with label antarctica. Show all posts
Showing posts with label antarctica. Show all posts

Thursday

First evidence of microplastics in Antarctic snow

First evidence of microplastics in Antarctic snow


Source: own work, using Blue Marble data from http://visibleearth.nasa.gov/view_rec.php?id=2433
Author: Dave Pape
Permission: (Reusing this file)
Public domain: This work has been released into the public domain by its author, Davepape. This applies worldwide.

Abstract:

In recent years, airborne microplastics have been identified in a range of remote environments. However, data throughout the Southern Hemisphere, in particular Antarctica, are largely absent to date. We collected snow samples from 19 sites across the Ross Island region of Antarctica. Suspected microplastic particles were isolated and their composition confirmed using micro-Fourier transform infrared spectroscopy (µFTIR). We identified microplastics in all Antarctic snow samples at an average concentration of 29 particles L−1, with fibres the most common morphotype and polyethylene terephthalate (PET) the most common polymer. To investigate sources, backward air mass trajectories were run from the time of sampling. These indicate potential long-range transportation of up to 6000 km, assuming a residence time of 6.5 d. Local sources were also identified as potential inputs into the environment as the polymers identified were consistent with those used in clothing and equipment from nearby research stations. This study adds to the growing body of literature regarding microplastics as a ubiquitous airborne pollutant and establishes their presence in Antarctica.

Thursday

Penguinology

I never realized there was such a word as "Penguinology". So what do you call a person that studies Penguins or the study of Penguins?


Tuesday

Rarest and possibly the most ancient of all living penguins...

Yellow-eyed Penguin headImage via WikipediaYellow Eyed Penguin

From Site:



Description & Characteristics:
Rarest of all the penguins, the Yellow-eyed penguin inhabits coastal forests of New Zealand and neighboring southern islands. Unique in appearance and behavior, these solitary birds have experienced population declines in the last 50 years due to habitat loss and predation by introduced species. 
Yellow-eyed penguins have distinctive golden feathers which form a crown on their heads. This along with a bright yellow stripe running to the eye and around the back of the head are the distinguishing features of these elusive birds. They have slate grey-blue blacks with a white breast and belly, flesh colored feet, and thick reddish-purple bills. Immature birds have grey eyes and lack the yellow eye band and yellow head plumage. Chicks are covered with thick dark brown down feathers. Both sexes are alike, although the male does have slightly larger head and feet.
Yellow-eyeds spend most of their day at sea, feeding in the warm New Zealand waters. Amazing underwater swimmers, they can dive to depths of 400 feet and are adapted to holding their breath for up to four minutes.They may travel up to 20 miles from shore to feeding grounds at the edge of the Continental Shelf. There they scan the depths for opal fish, silverside, sprat, aruhu, red cod, and arrow squid.
Yellow-eyed penguins are forest nesting birds, preferring to nest in a secluded site backed up to a bank, tree or log. Coastal deforestation, however, has forced these penguins to seek refuge among tall shore grasses where adults, eggs and chicks frequently become prey to introduced dogs, cats, stoats, ferrets, and rats. Although they nest in loose 'colonies', mated Yellow-eyed penguins seek solitude, often nesting out of sight of each other.
During their lengthy breeding season, which runs from mid-August to mid-March, the penguins come ashore in the evening and waddle clumsily up the beach to their inland nest sites. In September to mid-October, Females lay two eggs in nests of sticks and coarse grass which provide shelter from the hot sun and protection from storms. The incubation period is about 45 days and both parents keep watch over the eggs. The average hatching date on mainland New Zealand is the beginning of November. Both eggs usually hatch. At this point, one parent remains with the chicks while the other parent goes to sea to hunt for food. Unusual among penguins, the chicks stay with the parents and do not form 'crèches' (nursery groups). Chicks fledge from mid-February to mid-March and are then able to head out to sea on their own.
Despite being swift swimmers, Yellow-eyed penguins can fall prey to seals and sharks at sea, though by far the biggest threats to their survival are on land. Significant protection measures have been introduced lately to curb population losses, including legislation aimed at reducing the numbers of non-native mammalian predators and slowing habitat loss.

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Friday

Emperor penguin's old clothes are unveiled

Amplify’d from www.nature.com
Fossilized feathers reveal colourful past.
A 36-million-year-old fossilized penguin skeleton found on a cliff-face in Peru has given scientists insight into how penguin feathers, originally used for flight, adapted to swimming. The fossil, found by palaeontology student Ali Altamirano of the Museum of Natural History in Lima, contained intact pigments which researchers say mean that, instead of the black and white plumage of modern-day penguins, the ancient bird sported grey and reddish-brown feathers.

Water emperor

Fossil wing feathers of Inkayacu paracasensis.
The well-preserved feathers of Inkayacu paracasensis are a rare find.Science/AAAS
The fossil includes an intact skull with a long, hooked beak, wing and leg bones, vertebrae and impressions of feathers. The species has been named Inkayacu paracasensis — meaning the water emperor of Paracas, the Peruvian natural reserve in which it was found. The research team estimates that the living bird would have been about 1.5 metres long when swimming and have weighed about 55–60 kilograms, making it twice as heavy as a modern emperor penguin (Aptenodytes forsteri) and among the biggest extinct giant penguins found so far.
The bird's presence in Peru adds to evidence that penguins diversified and spread around the world early in their evolution, says Clarke. Other ancient penguins reached modern-day New Zealand, Antarctica and other parts of South America, where in 2005 Clarke's Peruvian collaborators found another giant penguin from the same time period (See 'Giant penguins lived in Peru').
Read more at www.nature.com
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Sunday

The Fairy Penguin-The World's Smallest Penguin

Little Penguin or Fairy Penguin (Eudyptula min...Image via Wikipedia

The Fairy Penguin-The World's Smallest Penguin
From Site:

Of the World's seventeen penguin species Eudyptula minor, the Fairy Penguin, is the most diminutive. Breeding as far north as Port Stephens in Australia it is found only in Australia with sub species in New Zealand. Although penguins are usually associated with ice and the frozen poles, this penguin lives happily on warm, sandy beaches and the balmy Indian Ocean. Despite their popularity as a tourist attraction, knowledge about their population and biology is still lacking and accurate population estimates are uncertain.

Read more at Suite101: The Fairy Penguin-The World's Smallest Penguin http://marine-conservation.suite101.com/article.cfm/the-fairy-penguin-the-worlds-smallest-penguin#ixzz0q5T5FyUB
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Wednesday

Rare Black Penguin

clipped from www.telegraph.co.uk


An "astonishing" black penguin suffering from a rare condition has been
photographed by wildlife enthusiasts.

Rare black penguin: Pictured: 'astonishing' rare black penguin living on South Georgia

The penguin, believed to be suffering from a condition known as melanism, was
spotted on Fortuna Bay, a sub-Antarctic island of South
Georgia,
about 860 miles off the
Falklands
.
“Observing this black penguin waddle across South Georgia's black sand beach
revealed no different behaviour than that of his fellow penguins. In fact,
he seemed to mix well,” he wrote on a National
Geographic blog
.


“Regarding feeding and mating behaviour there is no real way to tell, but I do
know that we were all fascinated by his presence and wished him the best for
the coming winter season.”


Biology experts say that because black penguins are particularly rare there is
very little research discussing the subject.

It is estimated that about one in every 250,000 penguins shows evidence of the
condition.

Thursday

What would it take you to "Vote For A Penguin Whisperer"?

Gentoo Penguin, Pygoscelis papuaImage via Wikipedia

Time To Vote This Penguin To Antarctica!
GrrlScientist is competing to become the official blogger on a voyage of a lifetime to Antarctica.
Go Here to Vote and read why you should vote for her: "A Gift of The Adventure of a Lifetime"

From Quark Site:
BLOG YOUR WAY TO ANTARCTICA
Travel on a $20,000 Expedition
for Free!

Quark Expeditions is searching for an Official Blogger to join a voyage to Antarctica. Do you have a passion for the polar regions? A commitment to the environment? An insatiable urge to photograph penguins?

Post your entry and tell the world why you should be our blogger. Be creative! On September 30, 2009, the entrant with the most number of votes will be selected as the winner.

The Official Quark Blogger will travel with a guest to Antarctica in February 2010 and blog about their experience, chronicling the action, the emotion, and the drama as their polar adventure unfolds.



And the answer is.... just a couple of minutes of your time!
So why you still here?
Go vote and spread the word ;)
If you've got more email address, since your only allowed one email address per vote...
Vote a second time and let's double those votes!
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Tuesday

Penguin poo is visible from space


From Site:

Scientist trying to locate colonies of emperor penguins in Antarctica have found an unusual way to do it ... looking for their poo from space.

Researchers have had problems working out exactly where the penguins live because individually they are not big enough to show up on satellite images.

But the British Antarctic Survey have found that while the flightless birds are too small to be seen, the mess they leave on the ice isn't.

Scientists have now discovered 10 new colonies of penguins all because of the reddish-brown streaks on the ice ... they never mentioned that in March of the Penguins.
[via: http://newslite.tv]

Saturday

Women Working In Antarctica

This website is produced by video journalist Mary Lynn Price to present some of the short video portraits of of women working in Antarctica created during the 2008 Austral Spring Season.

The video portraits of Women Working In Antarctica will be used as part of the Ocean Institute's Girls in Ocean Science program, based in Dana Point, California.

A video journalist based in La Jolla, California, Mary Lynn produces high definition videos and video podcasts about interesting subjects underwater and above.

[via:http://WomenInAntarctica.com]