Sentences with phrase «of animal migration»

«Stable isotopes are a powerful tool for understanding patterns of animal migration,» adds Nelson.

Until now, most studies of animal migration have focused on large, easy - to - study birds and mammals.

Permafrost is melting; the timing of animal migrations is changing; and a host of other things that have great inherent stability are changing.

Permafrost is melting; the timing of animal migrations is changing; and a host of other things that have great inherent stability are changing.

Not exact matches

The author compares the diminishing migrations of birds from North America to Central and South America to the plight of the poor: «If this is happening with wild animals, we may easily guess who is to follow.»

Although much research has focused on understanding how animals guide their migrations across large regions of the planet, we know very little about this phenomenon, particularly for large, difficult - to - track species.

Because of Madagascar's diverse variety of rocks with different chemistries and ages — a result of the island's ancient history of colliding with other landmasses and then drifting apart — tracking animal mobility and migration patterns can be performed with confidence, explains Crowley.

A large herd of caribou reportedly drowned in Canada in the 1980s, and there are still some huge migrations of animals, such as reindeer.

The wildebeest migration is the largest terrestrial migration on the planet, and others of its kind have largely disappeared as humans have killed off animals or cut off their migration routes.

Strapping a geolocator to a bunch of animals is usually a pretty good way to see what kind of migrations they pull off.

While it may not include the thrill of the chase inherent in the live tracking of animals, DNA is nevertheless useful for discerning migration routes — especially if those migrations happened thousands of years ago.

But our study shows that we also have to include the active biological processes, such as animal migrations, to predict and calculate the ocean's ability to absorb anthropogenic emissions of CO2,» says Professor Katherine Richardson of the University of Copenhagen, who is also one of the authors behind the study.

We see continent - scale migration of animals and plants, ranges are shifting.

Many of the major migrations on Earth, especially on land, have already been lost, he explains, and few landscapes are left on Earth where the migratory animals do not have to share land resources with agriculture and other human activities.

He sees the capability of using the team's research in the future to design models that will help game managers, conservation managers, farmers and tour operators predict animal migration, whether it's zebras or other migratory animals.

The seafloor animals of the Southern Ocean shelf have long been isolated by the deep ocean surrounding Antarctica and the Antarctic Circumpolar Current, with little scope for southward migration.

Evoked by a new analysis of a fossil tooth of the long - extinct animal, called Diprotodon, the scenario would be the only known seasonal mass migration among marsupials and their close kin.

In this episode, Liz Johnson and Felicity Arengo from the American Museum of Natural History take Scientific American podcast host Steve Mirsky for a walk in the park — Central Park — to talk about the spring bird migration and the role that Central Park and other green spaces plays in the lives of birds and other animals.

Later migrations of mainland animals may have led to the evolution of Sumatran and Bornean orangutans

As a comparison, annual mass migrations of animals across the Serengeti plains of Africa cover about 800 kilometers.

Cuvelier referred to cross-border fire suppression, water issues and animal migration concerns that would be complicated with the building of a wall.

Norway's Svalbard archipelago hosts some 150 bird species, including the Arctic tern, which makes the longest migration of any animal (nearly 45,000 miles to the Antarctic and back).

Studies on animals with mating or migration patterns that revolve around lunar cycles could also illuminate the underlying biological drivers as well as the evolutionary benefit of having a moon - synced clock.

These findings contribute to broader stories of ways in which people move domestic animals around the world through migration, exchange and trade.

It has long been debated whether that change in subsistence strategy involved the mass migration of people from the Near East bringing innovative technologies and domestic animals to Europe or whether it was due to a transmission of cultural practices passed on from neighbouring populations.

The corridor has been considered a potential route for human and animal migrations between the far north (Alaska and Yukon) and the rest of North America, but when and how it was used has long been uncertain.

The team looked at the DNA sequence of mitochondrial cytochrome b gene to gain more precise genetic information and gain insight into the history of the animals» migration routes.

«In the next 10 years,» she says, «a lot of the key findings of migration are going to come from these tiny little animals.»

From their privileged vantage point, satellites are particularly well - suited to observe habitat transformation and help scientists forecast impacts on the distribution, abundance and migration of animals.

Now, an analysis of one animal's teeth suggests that it undertook long, seasonal migrations like...

It is the longest recorded migration of any animal.

According to a new analysis of a fossil tooth of the long - extinct animal, called Diprotodon, the scenario would be the only known seasonal mass migration among marsupials and their close kin.

A white shark's big fat liver, which can plump up to more than a quarter of an animal's body weight, turns out to be the fuel tank for extreme migrations.

By combining data from two kinds of tracking tags attached to the animals, an unusual analysis shows that sharks fatten up for the demands of migration much the way birds do, says Gen Del Raye of the University of Hawaii in Manoa.

«Animals can adapt to climate change, mainly by relying on migration, depopulation — which consists of starvation and cannibalism — and dietary change,» he explains.

They've found a bump in animal migration three million years ago, but a spike in flora migration 10 million years ago, in support of the revisionist time frame.

Other studies have gauged how climate changes will affect migration, flowering, and other factors that could put plants and animals out of step with the world around them.

When the migrations dwindled, the organisms that relied on the carcasses of animals that came to grief may have declined or vanished, he says.

By using fruit fly as a model system, Minna Poukkula working at the Institute of Biotechnology, University of Helsinki, has found out how actin - rich protrusions contribute to cell migration in animal tissues.

And for instances where plants or animals don't seem to be adjusting, «assisted migration might be an important component,» he says, although he and Sax note that the implications of this practice are not well understood and can be quite risky.

«Finding these animals is going to take some effort, as our computer - simulation analysis of the data showed that we need more photos from more localities just to get a better estimate of migration patterns at even regional scales,» Dr Meekan said.

Analysis of the images provided data on sex - ratio bias, site fidelity and aggregation, hotspot sites, size and migration patterns of the animal — details that improve scientists» understanding of the species and help conservation efforts to protect them and their environment.

The top graph shows the migration of animals in the mesopelagic zone up to surface waters at night to feed, and back down at daybreak.

However, at mid-slope depths there is an abundant and diverse ecosystem where a huge volume of animals make daily vertical migrations to feed at the surface during the night.

They placed human neural stem cells in the rostral migration stream — a pathway in the rat brain that carries cells towards the olfactory bulb, which governs the animal's sense of smell.

Malaria cases increase with deforestation, researchers have found, while new roads through the rain forest provide corridors for the migration of people, insects and animals that serve as intermediate hosts for pathogens, Wilson said.

The finding supports a case made by Jared Diamond and others that migration along the same lines of latitude in Eurasia promoted the sharing of crops, animals and technology, but that wide variations in climate found in the New World's north - to - south orientation hindered cultural exchanges

One of the great unknowns in the history of life is the part that Antarctica may have played in the evolution and migration of vertebrates (backboned animals) during the key time interval that spans the end of the Age of Dinosaurs and the beginning of the Age of Mammals (the Cretaceous — Paleogene or K — Pg, between 100 and 40 million years ago).

«We've known there's been an interchange of animals between Asia and North America in the late Cretaceous period, but this is the first example we have of a fossil in the High Arctic region showing how this migration may have taken place,» says John Tarduno, professor of geophysics at the University of Rochester and leader of the Arctic expedition.

Moreover, mebendazole inhibited invasion and migration of cancer cells in vitro, and formation of metastases in vivo in experimental animals.