Posts Tagged ‘Baltic Sea’

Dog drifts 75 miles on ice, rescued in Baltic Sea

Tuesday, February 2nd, 2010

By MONIKA SCISLOWSKA Associated Press Writer

WARSAW, Poland (AP) – A frightened, shivering dog was rescued after floating at least 75 miles (120 kilometers) on an ice floe down Poland’s Vistula River and into the Baltic Sea, officials said Thursday.

Now his saviors just have to figure out who really owns him.

Four people have already claimed him, but so far rescuers say there’s been no wagging tail of joy from the miracle dog they nicknamed “Baltic.”

The dog’s frozen odyssey came as Poland suffers through a winter cold snap, with temperatures dipping to below minus 4 degrees Fahrenheit (minus 20 Celsius).

The thick-furred male dog was found adrift Monday 15 miles (24 kilometers) out in the Baltic Sea by the crew of the Baltica, a Polish ship of ocean scientists carrying out research.

Researcher Natalia Drgas said Thursday the rescue was difficult and at one point it seemed the dog had drowned.

“It was really a tough struggle. It kept slipping into the water and crawling back on top of the ice. At one point it vanished underwater, under the ship and we thought it was the end, but it emerged again and crawled on an ice sheet,” Drgas said.

At that point, the crew lowered a pontoon down to the water and a crew member managed to grab the dog by the scruff of his neck and pull him to safety.

Too weak to shake off the frigid water, Baltic was dried and wrapped in blankets. After he warmed up, he was massaged, fed and soon got on his feet to seek company, Drgas said.

A firefighter in Grudziadz, on the Vistula river 60 miles (100 kilometers) inland from the Bay of Gdansk, told The Associated Press the dog was spotted Saturday floating on ice through the city. Firefighters tried to save him but could not approach the dog due to shifting ice sheets, said the officer, who spoke on condition of anonymity.

The Baltica crew, now moored in the port city of Gdynia, have been searching for the dog’s owners, ship captain Jerzy Wosachlo said. So far four people have claimed him, but Baltic has not claimed any of them back, Drgas said.

The dog didn’t welcome the first two people to come for him, keeping his distance and showing no recognition toward a couple on Wednesday and a woman on Thursday who both said he was theirs. Two other would-be owners were still en route to Gdynia for a possible reunion.

Once in port, the brown-and-black mongrel was taken to a veterinarian, who found him in surprisingly good condition and estimated his age at around 5 or 6 years old. Veterinarian Aleksandra Lawniczak said the 44-pound (20-kilogram) dog was clearly frightened but in strikingly good shape and had suffered no frostbite.

A dog with thick fur and a layer of fat can survive such cold conditions for as long as eight days if it has water to drink, Lawniczak said.

She described Baltic as a friendly dog who was clearly well treated before getting lost.

Wosachlo said the research team is prepared to adopt Baltic if his original owner is never found.

Climate Change Influences The Size Of Marine Organisms: Big Advantage For The Small

Monday, September 7th, 2009

ScienceDaily (Sep. 7, 2009) — The ice is melting, the sea level is rising and species are conquering new habitats. The warming of the world climate has many consequences. Researchers now report that climate change influences the size of aquatic organisms.

Drastically profound change of Phytoplankton: the left pictures shows a microscopic photo of the spring bloom on current environmental conditions. Big diatoms are dominating. With a warming of six degrees (right picture) much smaller flagellates are dominating. (Credit: IFM-GEOMAR)

For a long time scientists have observed the biological consequences of global climate change. One of the most famous symptoms is the shift of habitats from the equator further north or further south. More recent studies show that not only the habitats but also the size of organisms is affected.

Dr. Martin Daufresne of the HYAX Lake Ecosystem Laboratory in Aix-en-Provence, France, as well as Prof. Ulrich Sommer and Dr. Kathrin Lengfellner of the Leibniz-Institute of Marine Sciences (IFM-GEOMAR) in Kiel have shown that global warming leads to reduced body size of organisms in the ocean and in freshwater. Very different organisms showed this tendency: bacteria, plankton-algae, zooplankton and fishes in the North and Baltic Sea and in French rivers.

Three mechanisms seem to play a role in this process.

  • First: The proportion of smaller species grows.
  • Second: The proportion of smaller individuals grows within one species.
  • Third: The animals reach sexual maturity with smaller body size.

“This development affects the functioning of the whole eco-system: The body size is decisive for what animals can eat and by whom they are eaten. A shift to smaller species and individuals within the fish population could lead to a reduction of zooplankton because small fish will eat less fish and more zooplankton. This could pave the way fvor massive and unpleasant algal blooms. Furthermore, with smaller fish the economic value of fishery declines”, explains Prof. Sommer.

The bacteria, algae and zooplankton were examined in experiments of Baltic Sea plankton as part of the German Research Foundation-programme AQUASHIFT. The results about fish size are based on long term measurements in the North Sea, the Baltic Sea and in French Rivers.


Journal reference:

  1. Daufresne et al. Global warming benefits the small in aquatic ecosystems. Proceedings of the National Academy of Sciences, 2009; DOI: 10.1073/pnas.0902080106

Adapted from materials provided by Leibniz Institute of Marine Sciences (IFM-GEOMAR).

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