Sentences with phrase «in ancient ecosystems»
«Palaeothentid marsupials once included a diversity of species that filled a variety of roles in ancient ecosystems.
https://www.sciencedaily.com/ Not exact matches
But it was before the explosion itself, «during these anoxic phases... that a lot of morphological novelty arises,» Erwin explains, likely in small, soft - bodied animals that existed on the sidelines of ancient ecosystems and which left little to no fossil record.
«Tiny «vampires»: Paleobiologist finds evidence of predation in ancient microbial ecosystems: Evidence dates back more than 740 million years.»
The researchers now think that cyanobacteria played a larger role than previously believed in creating phosphorites in shallow waters, thereby allowing today's scientists a unique window into ancient ecosystems.
Studying the ancient DNA of gray whales has opened a new door into how ecosystems have changed over time — and underscores the unprecedented pace of change in today's human - altered world, Alter says.
Similar analyses of fossils of other members of the same ancient ecosystem may reveal that multiple species participated in the ancient migrations, scientists say.
The key lies in organic materials found in fossil bones, which contain evidence for how ancient ecosystems functioned, according to a new study available online and in the September issue of the Journal of Herpetology.
The Norian Chinle Formation in the Southwestern United States provides a snapshot into an ancient terrestrial ecosystem with its famous petrified tree trunks and various plant and vertebrate remains.
He points to research that shows that mammoths and other large herbivores trampling across the ancient Arctic ecosystems helped maintain the grasslands by knocking down trees and spreading grass seeds in the dung.
«Ancient ecosystem response to «big five» mass extinction: Ingenious modeling shows that the stability of ancient ecosystems depended on species with important, big - picture roles in food web.Ancient ecosystem response to «big five» mass extinction: Ingenious modeling shows that the stability of ancient ecosystems depended on species with important, big - picture roles in food web.ancient ecosystems depended on species with important, big - picture roles in food web.»
The ecosystem may be nourished at least in part by microbes that feed on organic goo in the subglacial mud — the remains of ancient plankton that died and sank to the bottom millions of years ago, when the world was warmer and this place was a sunlit sea.
«If a species arrives in a new environment or is introduced by ancient people, how long is enough time for a species to be considered «native» or part of the ecosystem — 1,000 or 10,000 years ago?»
If you're studying ancient climate trends then you should be aware of the many intricacies of our planets ecosystem, making this question narrow in scope.
The new discovery suggests that the hadrosaurs not only roamed in herds but also flourished in the ancient high - latitude, polar ecosystem.
Her recent book, «How to Clone a Mammoth,» offers a critical, pragmatic, perspective about de-extinction that is rooted in her ancient DNA expertise, Dr. Shapiro is a protagonist for the appropriate, ethical, and responsible application of de-extinction technologies for conservation of living species and their ecosystems.
Stromatolite fossils not only «provide obvious evidence of ancient life that is visible with the naked eye, but that they are complex ecosystems,» Nutman said in a statement, adding that the newly discovered fossils are about 220 million years older than the world's previous oldest stromatolite fossils that were found in Western Australia in 2006.
They'll gather samples, photos and reams of data in an effort to understand what an ancient, largely undisturbed ecosystem looks like.
This has potentially broad implications sulfate and oxygen levels in the oceans during this time, for the our understanding of Earth's ancient ecosystems.
Instead of revering the «bow in the cloud» of Genesis, that ancient sign of His promise never again to destroy Earth's living creatures, the cultists said to look to the white comet, to a new covenant in which animals didn't fit, and on one continent after another, they found ways to tip already endangered whole ecosystems toward their bowls of ashes.
One day you're on top of ancient Mayan ruins and the next you're up close and personal with two endangered animals in completely different ecosystems.
Tailored for those interested in experiencing the wonderful and varied marine ecosystem of the Turneffe Atoll combined with the mainland adventures of Belize's jungles and ancient history.
With its unique species and virtually untouched ecosystem, Santa Cruz Island is a microcosm of ancient California, allowing visitors the opportunity to travel back in time to experience what the coast might have been like before the introduction of exotic species.
These ecosystems, primarily the Arctic tundra (5), peatlands (1), and tropical rain forests (6, 7, 8), harbor ancient, highly - concentrated carbon stocks, which are rapidly released during fire events like the one in Indonesia.
For thousands of years the people of the area managed to live in harmony with these ancient trees, understanding the importance of their unique forest ecosystem.
To this end, Kareiva advises conservationists to craft «a new vision of a planet in which nature — forests, wetlands, diverse species, and other ancient ecosystems — exists amid a wide variety of modern, human landscapes.»
Posted in Advocacy, Climatic Changes in Himalayas, Disaster and Emergency, Disasters and Climate Change, Ecosystem Functions, Flood, Governance, Government Policies, Migration, News, Population Comments Off on Ancient Waterways Bend To Climate Change
Appalachian forests are an ancient and unique ecosystem, one of the oldest in the world, with some of the highest levels of biodiversity to be found in a temperate zone.
We'll see what it might take to preserve ancient, endangered ecosystems in the face of pressures from a global economy and a slew of looming 21st century threats.
Since college professors are experts in subjects of study that can be quite compelling (ranging from ancient empires to the study of astronomy to marine ecosystems), their lives and livelihoods may also seem quite compelling.