Research shows a change of 50,000 years

New research by Jovasam shows how human influences, especially through the rise of agriculture and livestock, have affected the communities of natural artisans as much as the ice age.

The bone bones from six continents have revealed how people have changed the groups of stagnant parties around the world, according to new research, which shows the history of 50,000 years of animal.

International study, which was published last month The letters of biologyIt shows that during the last ice age, the communities of the stars created separate samples in natural climate areas and geographical barriers. But after the start of about 10,000 10,000 years ago, only a handful of livestock species spread with humans and rotate these natural boundaries forever.

“This study shows how agriculture and hunting have worked together as powerful global forces for the reorganization of the environmental system, which still creates challenges for protection,” says John Al -Rowe, an associate professor from Makori University, co -author of this study.

Researchers compared the list of species of the last ice era – in particular, the late Plastson Geological Covenant, which ended 11,700 years ago, with the Holson lists, our current era, which began after the end of this ice age.

“We have reviewed the list of hundreds of archaeological and psychological sites in several continents over the past 50,000 years,” says Professor Berry Brook, author of the University of Tasmania University.

During the plason, natural factors such as climate milestone, and physical obstacles such as mountain ranges and oceans formed makeup of large seeds of communities. In the same climate, animals had a tendency to live together, which produces anticipated continental samples.

But Holson made dramatic changes in the distribution of species, which are directly linked to the human development of agriculture and the raising of the selected species of animal.

Domestic disruption

In examining archaeological records, researchers were found only 12 rape species, including cattle, sheep, pigs and horses – which are shown globally in almost HALF half -sites, which mainly changes the formation of animal communities.

“After the start of farming, only a handful of livestock species spreading with humans turned around the natural boundaries, which renovated the communities around the world.”

The influential animals, which were influenced, included familiarity animals.

“All the rare species have had an effect, including donkeys, sheep, goats, pigs and dogs,” says Ellerway. “Large enclosures like horses and cows are important because they monopolize food resources wherever they are in large numbers.”

Although the birds were excluded from the central analysis due to their false fossil records in this study, Associate Professor Al -Rowe says domestic hen also found 29 out of more than 350 sites, mostly in Europe and the Middle East.

Researchers developed a new computer cluster method to show that pets have connected the Holosian archeology locations thousands of kilometers away. At the same time, in every case after human arrival, many wild seeds became breastfeeding, not during a particular event of climate change worldwide.

When domestic animals were spread geographically in remote areas, the ecosystem ended with similar recipes. For example, after adopting both the Middle East species, the backbone community in Europe and Africa became more the same.

Beyond megafona

Although human influences were found almost everywhere, Plystoson’s extinction in these regions was more severe, with less evolutionary history between humans and local species, such as North and South America, Australia, New Zealand and Madagascar.

After the plason, the effects of agriculture were also dramatic in terms of the region. Some regions, such as New Guinea and Sri Lanka, faced minimal changes, while high levels of species were seen in Europe, the United States, Australia and some parts of Africa.

The late Ice Edge’s previous degradation has highlighted the disappearance of major physical “megaphuna”-large animals such as large animals such as large animals, woolen mammotes and giant marsophyllus-but-but-maraculosis.

“When the megafona disappeared like Memotes, we were expected to increase the size of the population of wild species that survived the absence of food competition, but that did not,”

The clustering shows the distribution of species

Using a new method called “Chase Clustering”, the team made fossil sites based on the list of very similar species, regardless of where the sites are geographically.

“The grouping of rare animals connects the sites thousands of kilometers away, while many wild stars have disappeared in those areas,” says Elrew.

Generally, geographically due to common climate and environment, there are equal animals in the nearby sites. But the new method has lost some traditional methods: Human activity broke this style by spreading the same form of animals.

The study shows that the chase clustering procedure has the ability to be extensively applied to research to cope with the cluster.

Modern implications

Some researchers connect the species of the past with major changes in the hunting or climate of deep humans in the history of the earth, yet despite the major climate changes in the plason, it is either beneficial for most of the stars or does not agree with extinction.

However, this study suggests that the vanity of the hunting plason species was met with many different agricultural effects in Holson.

“In the last 10,000 years, humans have monitored the wholesale change of communal communities, which has a combination of pets,” says Ellerway.

“Extension’s ecosystem has not been really natural for the last 10,000 years or more, so in the toughest regions like Australia and the United States, national parks are lacking more than half of the local seminaries that are not available for humans.”

He offers a dramatic example from Australia: “A layer of excavation in a tough entrance cave in Western Australia includes 17 species of larger seeds, including thalassen, Tasimani Devil, Thailakolio, Zigometosar, a major vomiting, and a different type of vomiting, and a variety of unhealthy. Make the ecosystem inaccessible.

This content was originally published in the Lighthouse at Macorie University.