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Climate change would be altering deer to give birth early

Climate change would be altering deer to give birth early 86

Credit: Elsemargriet / Pixabay

Usually, we think of evolution as a slow process that takes place over millions of years. However, a team of scientists has now documented how deer on a Scottish island seem to be evolving over the course of decades, possibly in response to climate change, which makes them give birth earlier, at the beginning of the year.

According to a study published in the open access journal PLOS Biology, these deer, who live on the island of Rum, near the west coast of Scotland, have undergone genetic changes that have contributed to the animals having children almost two weeks earlier over the past four decades.

Previous studies by other groups of scientists have shown that deer on this island have been giving birth before, partly as a result of warmer temperatures that have altered their behavior and the functioning of their bodies.

Genetic changes in deer

However, the latest study sheds light on the important role of adaptive genetic changes in this process. The researchers say that this work represents some of the first evidence that evolutionary changes are affecting the time of year when wild animals give birth.

Timothée Bonnet, lead author of the study of the Australian National University said in a statement:

This is one of the few cases in which we have documented the evolution in action, which shows that it can help populations adapt to climate warming. ”

For their research, Bonnet and his colleagues examined the field records and genetic data that scientists collected from the deer population living on the island between 1972 and 2016.

Red deer on the Isle of Rum, Scotland
Red deer on the Isle of Rum, Scotland. Credit: J. Pemberton

Bonnet told the website Newsweek:

That population of red deer has been monitored intensely since the 1970s, and even before in less detail. That is why researchers have been able to notice changes in birth dates over the years. That is the fundamental motivation for our study: try to understand that change. ”

Impact of climate change on deer

The team’s analysis revealed that red deer hinds, known as hinds, with genetic adaptations that made them give birth at the beginning of the year, they tended to have more offspring throughout their lives. Therefore, responsible genes offer an evolutionary advantage and as a result they have become increasingly common in this deer population in recent decades.

Bonnet said:

We discovered that the genetic makeup of the population had changed to determine the dates of birth before spring. We discovered that genetic change is probably a response to natural selection, but we do not know what causes selection: it could be climate change, change in population density or any unknown factor that has changed in recent decades.

It is very difficult to say when climate change causes genetic change, but genetic change occurs at a rate similar to direct (non-genetic) responses to climate warming and fast enough to matter in the ecological dynamics related to climate change. ” .

Climate change would be changing deer to give birth early
Credit: smarko / Pixabay

Sally Thomas, from Scottish Natural Heritage, who also did not participate in the study, said in a statement:

These findings are a fascinating example of the impact that climate change can have on wildlife. More and more research shows that climate change is influencing species throughout the United Kingdom and the world. ”

Climate change is affecting life on our planet Earth in several ways and scientists say that for species to survive they must adapt by experiencing genetic changes or migrating to more suitable habitats, for example.

But a recent research published in the magazine Proceedings of the National Academy of Sciences suggests that genetic adaptation along with dispersion in new ranges could put species in conflict with each other.

This finding could mean that scientists have been underestimating how the global climate change will affect biodiversity and the amount of extinctions that will occur.

Some scientists have argued that the Earth is currently experiencing its sixth mass extinction, with species that disappear significantly faster than historical reference rates.

In fact, a historical report by the UN recently warned that 1 million species around the world run the risk of disappearing due to human pressures and climate change.

The scientific study has been published in PLOS Biology.

Source: Newsweek

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Planet Earth

Scientists – It is much colder today than in the last 8,000 years

Scientists - It is much colder today than in the last 8,000 years 99
Ted Scambos / NSIDC

Undisputed temperature reconstructions from around the world show that for much of the Holocene (last 10,000 years), the planet was much warmer than it is today.

Kenneth recently wrote how many new studies of glacier and sea ice sizes show that Iceland is 2-4 ° C colder today than it has been in the past 8,000 years. Only the late 19th century was a little colder.

This post was posted on WUWT and the author provided additional graphics there from other parts of the world showing that the early Holocene was warmer around the world.

First, South America, which shows 100 years ago that it was much warmer from the 1930s to the 1950s than it is today:

Scientists - It is much colder today than in the last 8,000 years 100

Next, we have a 7000-year reconstruction of the Canadian Arctic temperature:

Scientists - It is much colder today than in the last 8,000 years 101

Note that, as many of us already know, the Arctic was much warmer in the early Holocene than it is today.

Finally, let’s take a look at the Swiss Alps, which are 9,000 years old:

Scientists - It is much colder today than in the last 8,000 years 102

Here we see that today it is very cold in the Alps compared to the early Holocene. Old tree trunks found under the glaciers confirm this.

A WUWT reader added that he has “a lot more of this type of graphs, which show very clearly that the whole wolrld has been much warmer for much of the last 10,000 years than it is now.”

And there are really a lot of them!

Medieval warm period, confirmed by hundreds of works

Sebastian Lüning’s remarkable and outstanding Medieval Warm Period reference map, shows hundreds of climatic reconstructions from this period. There we find a lot of research that shows that there is nothing unusual about today’s climate compared to what it was 1000 years ago.

Here are 80 charts from 58 peer-reviewed articles showing the same.

Source

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Planet Earth

Polar vortex: “wild” winter is coming in the US, Northern Europe and East Asia after the 16th of January

Polar vortex: "wild" winter is coming in the US, Northern Europe and East Asia after the 16th of January 103

In the upper atmosphere above the North Pole, experts saw a rapidly swirling vortex of cold air that could bring severe frosts to the United States, Northern Europe and East Asia. Serious cold snap and snowy weather are expected after January the 16th.

Snowfalls and a cold snap hit South Korea since the start of 2021, hitting historic snow maximums and temperatures. In the country, for the first time since 1964, television and newer communications are sending people cold snap warnings:

https://twitter.com/sonyeoljin/status/1346841272347082752?ref_src=twsrc%5Etfw

The situation is similar in Japan, where a new snow storm hit historic highs:

On January 7, the thermometer In Beijing dropped to -20 degrees Celsius, breaking the 1966 record. In other regions of China, the temperature is also not sugar, and you can only move around in special uniforms:

The cold even reached Taiwan, where the temperature in some areas dropped below freezing point, snow poured down and people realized that rice terraces can be used as a ski jump:

Even more snow went to Spain, where on January 6, 2021, a temperature of -34.1 ° C was recorded – the lowest on record. After that, a snow storm hit the country, which has not been seen for 80 years:

https://youtu.be/pHU533Krs5M

The same thing happens in Canada and in the northern states of the United States:

It seems that after a stratospheric warming, the subpolar vortex began to split:

The vortex itself is a standard phenomenon. However, this time experts were surprised at his movement. It is possible that in the near future it will be divided into two parts. 

Scientists associate the strange behavior with the changed climate in the Arctic, which has become warmer. From September to December, the amount of ice cover decreased significantly.

The polar vortex is a low-pressure region located in the stratosphere and filled with cold air. When the jet stream of air that holds the vortex weakens, the low pressure area moves south. 

As the ice shrinks, more moisture will move inland. It will turn to snow, so snowfalls are expected. Snow, in turn, reflects heat, leading to a cold snap.

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Planet Earth

Hospital in Naples was evacuated after a new, huge sinkhole appeared

Hospital in Naples was evacuated after a new, huge sinkhole appeared 104

Eyewitnesses said they heard a loud crash at dawn when a huge hole in the ground formed outside the Ponticelli Ospedale del Mare hospital in eastern Naples.

Early in the morning of January 8, 2021, a sinkhole occurred in the parking lot of a clinic in Naples. The depth of the formed cavity is about 20 meters, the total area of ​​the hole is about 2,000 square meters.

No casualties were found at the scene; firefighters say the sinkhole “affected an area of ​​about 500 square meters” and engulfed several cars parked near the hospital.

As the press writes and as a little can be seen from the videos, rescuers and firefighters were running around the pit together with the governor of the area.  But who should be there in the forefront are Italian geologists, since Naples stands in the very center of the volcanic system known as the Phlegrean Fields.

If the surface collapsed, moreover – the surface reinforced with concrete and reinforced from below with some kind of communications, then we are talking about serious soil deformations caused by the activity of magma.

Italy has been in doubt since the summer of 2020, because swarms were observed there in very atypical places in May, and according to the forecasts of old Italian seismologists, who had witnessed many strong earthquakes, it should have boomed in the August region.

Fortunately, nothing bad happened to Italy and there was no big earthquake. But, since there are swarms, it means that something is being prepared, the magma is gathering strength. 

Following this particular sinkhole event – an obvious sign that a major earthquake in Italy is already very close.

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