This is a series of ten videos about studying sanderlings in Greenland, by Dutch biologists Jeroen Reneerkens and Stefan Sand, doing research about sanderlings in the Zackenberg area in north-east Greenland in 2012.
The life of G3BGGW – 12 February 2015
No, not a character from Star Wars. G3BGGW is a sanderling which was ringed in Iceland in May 2013. He was found dead on February 1, 2015 on Texel. What makes this bird so special is that he was not only seen several times in the past two years, but he was even seen alive a day before his death. So, the day of his death is very accurately known, something bird researcher Jeroen Reneerkens has experienced only a few times. Such small birds are almost never found when they die, let alone so quickly.
What’s in a name?
Thanks to his rings this sanderling was recognizable. When he came in sight of the telescopes of various bird watchers, viewers have noted the series of rings and passed the information on to the ring station. The letters in his name are about the colours: G = green, B = blue, W = white; the numeral 3 indicates that one of the rings is a flag, in this case a green flag, this was on “position 3”: above the rings on the left leg. Bird rings are read from left to right and from top to bottom.
Winter beach guest
Sanderlings are found on Dutch beaches outside the breeding season, so from late July to late May. The largest numbers you see on beaches in the winter months. They breed in the far north. … Those little birds that fast run back and forth with the surf – that are sanderlings. It seems like they are trying to go as close as possible to the water without making their feet wet. But actually they are looking for worms that appear quickly from the sand when the seawater flows over them. In the water there is plankton on which the worms feed. The birds try to catch the worms.
In Iceland G3BGGW was ringed and weighed. He weighed 71 grams and had OK fat stores to fly even further towards Greenland to breed. In winter sanderlings slim to about 50-55 grams. Five months later, he was seen on Texel, north of beach post 12. Then he came back a year later on the island, on November 5, 2014 at beach post 9. Presumably he remained until his death in this environment. Two days before his death he was seen on the parking lot near the beach. That is very strange for such a beach bird. There it cannot find food. The birdwatcher thought that he did not look too healthy there. The next day the bird was seen again on the beach and the next day he lay dead along the road to this beach.
Jeroen Reneerkens for years has been doing research into sanderlings. To do that, he has a large network of people in many countries who help with the rings and retrieval of this species. Except for Iceland also in Greenland, Scotland, England, the Netherlands, Portugal, Mauritania, Ghana and Namibia research teams are involved. There are 6,000 birds ringed and 61,000 observations noted. A chore, but it provides a lot of information on which the survival of sanderlings can be mapped accurately. Furthermore, the scientists discovered that while most sanderlings are worm eaters, they eat shellfish only in Ghana! They swallow them in their entirety and so have strong stomach muscles. The life of bird G3BGGW is not over. Jeroen will investigate this bird further. By viewing its organs and fat, he hopes to find out why the animal died: by disease, age, something else? Such a fresh dead bird is an unique opportunity!
This video says about itself:
Living with the Inugguit
In 2010, Dr Stephen Leonard embarked on a year-long trip to live with the Inugguit of north-west Greenland, the northernmost settled people on Earth. His aim was to record the language, stories and songs of these communities. The traditional life of the community and its future is potentially threatened by a number of factors, one of which is climate change. Dr Leonard lived as a member of those communities, travelled on hunts, and recorded and filmed as he went. Here he talks about some of his experiences and reflects on a year spent in the midst of a fading culture.
By Gwyn Griffiths in Britain:
Book review: The Polar North
Monday 17th November 2014
A new book on the Inugguit people, who are struggling to survive in the face of environmental catastrophe, is a warning to us all, says GWYN GRIFFITHS
The Polar North
by Stephen Pax Leonard
(Francis Boutle Publishers, £20)
THE POLAR North is a remarkable story of tiny Inugguit communities with a culture and a language spoken by less than 1,000 people struggling to survive in the hostile environment of west Greenland and in a world that is changing culturally and environmentally.
The book’s two main concerns are the effects of global warming and globalisation on a precarious way of life and it is no small feat of endurance that Stephen Pax Leonard was able to survive the harsh environment and be accepted by a close-knit, often claustrophobic, society for a whole year during his research.
The immediacy of the writing makes for a gripping narrative and although Leonard at times hints at depression in the dark period of the year as well as discomfort during that of 24-hour daylight, he does not dwell on it. What he has produced is a scrupulously honest but hugely sympathetic view of these communities.
The book has stark warnings, primarily of climate change. Since the early 1990s it has not been possible to travel by dog sledge to Canada because the Smith Sound is now partly open all year round.
In January 2011, the sun rose two days earlier than normal over Ilulissat and the best explanation for this is a shocking one. The ice cap is melting, lowering the horizon.
As the sea ice, fundamental to the Inugguit way of life, contracts so does the culture. The transmission of stories, through which vital survival information was transferred, is dying out and the young people of north-west Greenland have only a fraction of the knowledge of the old hunters.
Empty minds become glued to Danish children’s television and violent video games. Alcohol abuse and suicide are major social problems.
The passing of a language and culture of fewer than 1,000 speakers may be irrelevant to many but if the polar Inugguit are the canary in our cultural coal mine, then such a loss may have more relevance than we realise.
There is never any opposition to biodiversity but language activists, linguists and anthropologists are constantly being asked to defend linguistic and cultural diversity.
Fifty per cent of the world’s languages will not exist by the end of this century and we are on the road to the fastest rate of linguistic and cultural destruction in history, driven by the forces of globalisation and consumerism.
The book examines with fascinating detail the links between language and the environment, along with the subtleties and nuance of Inugguit communication.
An excellent introduction to the subject and, in providing a wider context of concern, an essential read.
This video is called Superfish Bluefin Tuna.
From the Technical University of Denmark:
Sep 05, 2014
On a warm summer day in August 2012, Greenlandic fishermen and biologists caught an unusual catch while conducting an exploratory fishery for mackerel.
Three large bluefin tuna, each weighing ca. 100 kg, were among the several tonnes of mackerel that were caught that summer. The presence of bluefin tuna in waters near Greenland is a very rare event, and there are no other scientific reports of its presence so far north as the Denmark Strait. The most recent report of its occurrence near Greenland was a stranding in 1900 in the southwesternmost tip of Greenland at Qaqortoq (formerly known as Julianehåb).
“Bluefin tuna usually search for prey in areas where surface temperatures are warmer than 11 C. However, because temperatures in August 2012 in the Denmark Strait were so warm, and because one of its favorite prey species, mackerel, had already expanded its range into the region, it is likely that bluefin tuna has expanded or is presently expanding its habitat to more northerly regions,” explains professor Brian MacKenzie, who together with senior scientist Mark Payne, senior scientist Jesper Boje (both from DTU Aqua), senior scientist Jacob Højer (Danish Meteorological Institute) and Department Head Helle Siegstad (Greenland Nature Institute, GNI), has been investigating the reasons why bluefin tuna and its summer dining menu are on the way to more northerly regions than usual.
The investigation, which was conducted as part of the EU projects Euro-Basin and NACLIM at the Centers for Ocean Life and Macroecology, Evolution and Climate, has been published in the August 2014 issue of the peer-reviewed scientific journal Global Change Biology.
Disappearance from Danish waters
The reason why Brian MacKenzie and his colleagues initially became interested in these tuna bycatches was to document changes in its migration behaviour and distributional range, and how these are being influenced by climate change and the abundances of both bluefin tuna themselves and their prey.
“The scientific community does not have a solid understanding of the factors that affect the migrations and geographical distribution of bluefin tuna and many other migratory species, but new knowledge like this can potentially help explain the unsolved mystery of why bluefin tuna disappeared from waters near Denmark and in the Norwegian Sea during the 1960s, and especially when they might come back,” says Brian MacKenzie, noting that in addition to the appearance in Denmark Strait in 2012, Iceland and Norway have been allocated new fishing quotas (30 tonnes each) for the species in 2014.
“The new quota allocations are presumably because the species has begun to expand its northerly feeding areas farther north. If summer temperatures continue to increase during this century, and if both bluefin tuna and its prey species are managed in sustainable ways, then it is likely that bluefin tuna could become a regular summer visitor in east Greenland waters, at least as far north as the Denmark Strait,” states Brian MacKenzie.
One, two or many tuna
The Denmark Strait is normally a much colder area without warm-adapted species such as bluefin tuna. How many tuna were present in summer 2012 is unknown.
“The data we have available are too limited to estimate how many tuna came so far north, but because the species is a schooling species, with schools having ca. 10-100 individuals, and because the fishermen caught the three tuna in the same haul, it is likely there were many more present,” Brian MacKenzie said.
“We are planning further investigations to determine whether this new migration behaviour toward more northern waters could be the result of an increase in the total population of Bluefin tuna,” the DTU Aqua-professor stress.
“Regardless of whether the stock has increased or not, climate-related changes in distributions of commercial fish like these we have seen already for mackerel and herring will mean that international management authorities will need to develop new fishery and ecosystem management plans,” says co-author Helle Siegstad, Head of the Department for Fish and Shellfish, GNI.
“We have already seen during the past few years with the case of the expansion of mackerel and herring into waters near the Faroe Islands, Iceland, Norway and now Greenland how complicated the discussions between jurisdictions can become. It will be important in future that we can provide authorities with a solid scientific and data basis, on for example bluefin tuna, when they are making new fishery management decisions,” says Brian MacKenzie.
The study, which details in depth the data as well as discusses key questions relating to the migratory origins of the tuna caught in Greenland, will form part of a theme session topic at the ICES Annual Science Conference which kicks off on 15 September in the Spanish coastal city of A Coruña.
This video says about itself:
26 March 2014
T[amisiocaris]. borealis, an ancient predator, probably used its spiny appendages to sweep through the water for prey and then bring it into its mouth, as these animations show. Credit: Martin Stein. Read more here.
From Wildlife Extra:
Large ocean predators evolved into gentle giants 520 million years ago
April 2014: Large marine creatures that roamed the Earth’s oceans more than 520 million years ago have been found to filter food from the water in a similar way to today’s blue whales and evolved into a gentle sea giant from a large marine predator that feasted on large prey, say scientists.
Newly discovered fossils from North Greenland showed that these ancient giant marine animals used bizarre facial appendages to trawl for nekton and plankton from the seas.
The North Greenland fossil, called Tamisiocaris, was a member of the iconic anomalocarids group of early marine animals which roamed the Cambrian and later Ordovician oceans. They swam using a set of flaps down either side of the body and probably captured large prey with specialised grasping appendages in the front of the mouth.
The team demonstrates that the Tamisiocaris had evolved into a suspension feeder by modifying its grasping appendages into a filtering apparatus that could be swept like a net through the water trapping small crustaceans and other organisms as tiny as half a millimetre in size.
The research, funded by the Agouron Institute, Carlsberg Foundation and Geocenter Denmark, was led by the University of Bristol and also included researchers at Durham University, the University of Bath and the University of Copenhagen.
As well as shedding light on the evolution of the Tamisiocaris, the researchers said their discovery also showed how productive the Cambrian period was and how vastly different species of anomalocarids evolved at that time. It also provides further clues into the ecosystems that existed hundreds of millions of years ago, they said.
Study lead author Dr Jakob Vinther, a lecturer in macroevolution at the University of Bristol, said: “The fact that large, free-swimming suspension feeders roamed the oceans tells us a lot about the ecosystem.
“Feeding on the smallest particles by filtering them out of the water while actively swimming around requires a lot of energy – and therefore lots of food.”
In order to fully understand how an anomalocarid could have fed, Dr Martin Stein from the University of Copenhagen, Denmark, created a 3D computer animation of the feeding appendage to explore the range of movements it could have made.
Dr Stein said: “Tamisiocaris would have been a sweep net feeder, collecting particles in the fine mesh formed when it curled its appendage up against its mouth.
“This is a rare instance when you can actually say something concrete about the feeding ecology of these types of ancient creatures with some confidence.”
The research about this was published here.
April 2014: An international team of researchers from the US, China and the UK have discovered the earliest known cardiovascular system in fossilised remains of an extinct marine shrimp that lived over 520 million years ago. The finding sheds new light on the evolution of the body in the animal kingdom and shows that even the earliest creatures had internal systems that strongly resemble those found in their modern descendants: here.
This video from the USA is called Greenland Rocks, for Geologists.
Giant Canyon Found Entombed under Greenland Ice
By Environment Correspondent Alister Doyle
Other studies have also revealed a rift valley entombed in Antarctica‘s ice in 2012 that scientists said may be speeding the flow of ice towards the sea, and a jagged “ghost range” of mountains buried in Antarctica in 2009 similar to the Alps.
“It’s remarkable to find something like this when many people believe the surface of the Earth is so well mapped,” lead author Jonathan Bamber, of the University of Bristol in England, said of the canyon described in Friday’s edition of the journal Science.
“On land, Google Street View has photographed just about every building in every major city,” he told Reuters of the study, using ice-penetrating radar and carried out with colleagues in Canada and Italy.
The canyon is 750 km (470 miles) long in central and north Greenland and comparable in scale to parts of the Grand Canyon that is twice as deep – 1.6 km – at its deepest, they wrote. The Greenland canyon is buried under about 2 km of ice.
About as long as the Rhone river in France and Switzerland, the ravine was probably cut by an ancient river that eroded rocks as it flowed north before temperatures cooled and ice blanketed Greenland 3.5 million years ago, they wrote.
The gorge probably still plays a role in draining some meltwater from beneath the ice sheet.
The scientists used airborne data collected mainly by NASA and by scientists in Britain and Germany to piece together maps of the canyon. At some frequencies, ice is transparent to radio waves that bounce off the bedrock.
Bamber said the gorge would help scientists refine models of how Greenland’s ice sheet slowly flows downhill but was unlikely to affect understanding of how global warming is melting ice.
“I don’t think it’s particularly influential” in determining the rate of ice flow, echoed David Vaughan of the British Antarctic Survey. He said the canyon was so deep under the ice that it was unlikely to be affected by any warming trend for many decades.
Vaughan led a four-year international study called ice2sea, which said in May that world sea levels could rise by between 16.5 and 69 cm (6-27 inches) with moderate global warming by 2100, partly because of a thaw of Greenland and Antarctica.
He told Reuters a few blanks remain on the map, including two areas of east Antarctica that scientists jokingly dub the “Poles of Ignorance”.
(Reporting by Alister Doyle; Editing by Alistair Lyon)
More details about the “making of” on newswatch.nationalgeographic.com/2013/06/18/how-a-stunning-aurora-video-was-made/.
The soft light of the arctic regions attracted me magically so that I decided to dedicate a project to it. Around the polar circle light occupies a very important role, especially in winter. During the freezing months the sun creeps only along the horizon providing thus long hours of this tender twilight that occurs before sunrise and after sunset. But the nights are even longer and then another special light brights up the sky: the aurora borealis. In this film I wanted to show how individual the northern lights are: they may dance very fast in a frenetic rhythm or explode in a red-purple firework or they may just glow greenish over the starry sky vaguely distinguishable by the human eye. Every night there is a different night show – if the polar lights appear as they use to be very shy divas.
As a non resident of the Arctic regions it was very difficult for me to hunt the northern lights. I travelled different times to the distant regions at the polar circle. It was not easy enduring the freezing temperatures and the darkness and sleeping in the tent or in the car when the harsh wind was shaking it too strong. But after a year I had the incredible luck to gather enough video material for this film project. Especially on my last trip to Tromsö in february 2013 I experienced incredible beautiful aurora borealis.
The surreal atmosphere of the landscapes is emphasized thanks to the wonderful music of the talented and creative composer Pablo Garmón vimeo.com/pablojgarmon.