For many of the animals will increase climate change is increasingly becoming a threat: temperatures, habitat is lost, food is scarce. In order to survive, they have developed quite different strategies. Different species of birds, for example, put it back already today, more routes or evaded to the North, and in the altitude where it is cooler.
Now, a new investigation, what was previously suspected by only a: migratory birds, their physique change because of climate change even. Ornithologists of the Field Museum in Chicago have found that the animals in the course of the years have become smaller and lighter. Her body contracted on average by 2.4 percent.
The total body, leg bone length, the mass, size, everything has decreased in the last forty years. The birds adapt to global warming. Because according to the "miner's rule" can have the escape of smaller animals in relation to their volume, more surface to the heat. Counterparts in colder regions are generally larger and more compact so you can store more heat.
during The investigation period grew, however, the wings of the birds by 1.3 percent. So you could be in company also with smaller bodies, their long walks, write the researchers, collected since 1978, every spring of dead migratory birds, and cataloged, and measured. About 70’000 animals of 52 different species stored in the magazine of the Museum in Chicago. All the examined species of birds were small, it was also for the ornithologists as a Surprise.
Observed for forty years, migratory birds: The ornithologist David Willard, co-author of the new study. Photo:
migratory birds are not the Only ones who have changed their physique. Researchers at the University of Maryland found 2014 a similar effect in the case of salamanders in North America. These burn like other land animals more energy, because it is getting warmer and drier. To be able to still deliver the same performance, shrank the body of six Salamander species in the examined 55 years, by an average of 8 percent.
in 2012, as calculated by the canadian University of British Columbia, such as the global warming of the seas on the animal world could have an impact. Because of this, the oxygen content drops in the water, fish consume less oxygen and stop earlier to grow.
most of the fish in tropical waters are affected according to the calculations. In the Indian ocean you will lose up to the year 2050 about a quarter of their body weight in the Atlantic ocean, 20 per cent and in the Pacific, 14 percent.
mountain goats in the Italian Alps have such a weight loss is already behind. Researchers at Durham University made 2014 the discovery that the animals are shrinking because of rising temperatures in the mountains. They weighed 25 percent less than counterparts in the same age thirty years earlier.
Also on the Galapagos Islands in the Pacific off South America, an exciting observation was made: Every few years the living iguanas will lose the size up to twenty percent of your body, because you are preparing for the weather phenomenon El Niño, where you will find less food. Nevertheless, it can starve to death as a result of an El Niño Phase, up to 90 percent of the Iguana Population.
Other animals are endangered due to climate change are also strong. The latest report of the world biodiversity tätsrats showed in may of this year, how closely the climate conditions and the development of the nature (read more about it here). Most of the animals are dependent, therefore, on a balanced and stable climate. Because you no longer find this, is happening on earth is just a gigantic species die.
Created: 09.12.2019, 22:28 PM