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Home https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Science https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Many animals can not adapt quickly enough to climate change

Many animals can not adapt quickly enough to climate change



<img src = "https://cdn.arstechnica.net/wp-content/uploads/2019/04/7803467530_67fc38693c_b-800×531.jpg" alt = "Bonobos bear the print of an ancient, vanished species of monkey. As the oceans and forests are transformed, and ecosystems are shocked, perhaps a million species break into the brink of extinction, but there is still hope for these organisms, some will change their behavior in response to rising global temperatures; could, say, be reproduced earlier in the year when it is cooler, others may even evolve to cope – perhaps through the because the smaller frames lose their heat faster

However, scientists now have no idea how these adaptations can develop.A new document in Nature Communications co-author of more than 60 researchers, aims to bring clarity.Through sifting 1

0,000 previous studies, the researchers found that the climatic chaos we have inhabited could be too intense [Editor’s note: The researchers scanned 10,000 abstracts, but their analysis is based on data from 58 studies]. Some species seem to adapt, yes, but they do not do it fast enough. To determine how a species adapts to crazy climates, you usually look at two things: morphology and phenology. Morphology refers to physiological changes such as the above-mentioned contraction effect; phenology is related to the time of life events such as reproduction and migration.

The species in the new study distort the birds, largely because the birds are relatively easy to observe. Researchers can create breeding boxes, for example, that allow them to enter when adults put eggs when chickens hatch, how big chicks are, and so on. And they can map how this all changes when the climate gets warm.

Considering these types of studies together, the authors of the paper Nature Communications found that the 17 species of birds they studied seemed to alter their phenology. "Birds in the Northern Hemisphere show moderate adaptive responses, although these adaptive responses are not enough to keep populations in the long run," says lead author Victoria Radchuk of the Leibniz Wildlife Institute's Zoological and Wildlife Research Institute. In other words, birds simply can not cope. Laying their eggs earlier, they encourage their chicks to hatch when there are plenty of insects to eat, which happens when temperatures rise in the spring. But they do not change fast enough.

This is not a phenomenon related to climate change caused by man. Life on Earth is so varied because it is so adaptable: temperatures rise or fall, and the species can move to a new habitat and evolve to make something different over time. But what we humans have unleashed on this planet is incomparable. "We are experiencing something about 1,000 times faster than the temperature observed in the paleo," says Radchuk. "There are limits to these adaptive responses and the delay becomes too great."

This means that now more than ever we must aggressively protect habitats to support species. "I think the results of this article really add plenty of caution that we should not hope that the species will adapt to the changing climate and changing habitats that we do not have to do anything," says Mark Reynolds, lead scientist for the migratory birds' program of environmentalists who did not participate in the study.

Indeed, this book is a terrible window of what can happen to ecosystems in general. The bird does not live in a vacuum – it feeds and defiles itself. The ecosystem is unattainably complex, all kinds of interacting beings, making these dynamics extremely difficult to learn, especially when the Earth's climate changes so quickly.

"This is not an Internet type of network, it's not a power grid," said Peter Ruppenarin, a curator of geology and paleontology at the California Academy of Sciences who was not involved in this work. "These are systems that have very specific structures and configurations for them. We have bad documentation for this. "

At a very basic level, if insects begin to multiply earlier in the year because the planet is warming up, birds have to change their life cycle. This means that birds predators also do. "A phenological change in one kind can have a pulsation effect through the system," says Ropnarin.

Another major consideration here is the length of the offspring. Species that produce offspring faster tend to adapt better to changes. That's why bacteria can develop resistance to antibiotics so quickly: they multiply as crazy, and individual bacteria with happy genetics to survive, win and pass these genes. Something like an elephant that may not be reproduced for up to 20 years in a 50-year life, works with longer times and can try to adapt to change.

that, compared to other animal families, birds are relatively adaptive in their phenology: they can change the time of migration, for example. A less mobile critic like a frog has no such luxury. But these researchers have found that flexibility is no longer sufficient for salvation.

This story originally appeared on wired.com.


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