Sentences with phrase «of ancient ecosystems»

«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.»

For years we have been told that invasive alien species are driving native ones to extinction and eroding the integrity of ancient ecosystems.

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.

Not exact matches

Recognized as one of the greater Temecula Valley's natural treasures, the Plateau features unique ecosystems like ancient Engelmann oak woodlands and rare bunchgrass prairie.

«As the poles are thought to harbor ecosystems like those from millions of years ago, our data suggest that more ancient animals were slow - growing,» Moss says.

«Palaeothentid marsupials once included a diversity of species that filled a variety of roles in ancient ecosystems.

«Tiny «vampires»: Paleobiologist finds evidence of predation in ancient microbial ecosystems: Evidence dates back more than 740 million years.»

He and the dozen senior scientists he has assembled for this expedition are reconstructing the ancient ecosystem of the Hell Creek Formation.

So when Horner was casting about for a potentially fruitful location to reconstruct an ancient ecosystem, he recognized that Hell Creek offered the opportunity to pursue a number of related lines of inquiry, including reexamining the factors that led to mass extinction.»

New research using ancient animal depictions tracks the collapse of Egypt's ecological networks one extinction at a time, offering a glimpse into how climate change and human impacts have altered the structure and stability of ecosystems over millennia.

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.

Today, there is no modern terrestrial ecosystem like that of ancient Abaco, with reptiles filling the roles of largest herbivore and carnivore.

By sequencing whatever DNA emerges (called eDNA) from even a thimbleful of ancient soil, researchers are reconstructing ancient ecosystems as far back as 700,000 years ago with astonishing clarity.

As the planet faces the dawn of a sixth mass extinction, scientists are searching for clues about the uncertain road ahead by exploring how ancient ecosystems collapsed and bounced back from traumatic upheavals.

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.

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.

Studying the wildlife of a modern East African savanna ecosystem provides students an analog for studying the ancient environment of the Lake Turkana Basin, which millions of years ago was much more lush and green than today.

This has potentially broad implications sulfate and oxygen levels in the oceans during this time, for the our understanding of Earth's ancient ecosystems.

The film creates its own, more politically evolved version of Kipling's literary ecosystem, with its ancient animal beliefs and practices, such as predators and prey declaring a «water truce» during a drought so that they can all drink unmolested from a parched watering hole.

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.

Due to its separation from the mainland and the late settlement of European colonists approximately 200 years ago, Tasmania is home to a unique ecosystem featuring ancient forests and species of wildlife that live nowhere else on the planet.

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.

Theorists also suggest that the kelp forests would have helped these ancient colonists by providing a stable way of life and preventing them from having to adapt to new ecosystems and develop new survival methods even as they traveled thousands of miles.

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.

Walk through ancient Maya cities such as Tikal, canoe the Macal River and through an underground water cave system used for Maya ritual burials, horseback ride or mountain bike through rich ecosystems, search for wildlife among pristine rainforest and enjoy the solitude of a jungle riverside landscape.

The diverse collections also boast artifacts of ancient history and natural science: fossil collections, a 143 - pound meteorite, an Egyptian mummy, shards of Babylonian cuneiform tablets, samplings of early Mediterranean jewelry, and representations of Berkshire ecosystems including local mammals, birds, reptiles, fish, insects, plants, and minerals.

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.»

George is devastated by this invasion of his homeland and the violation of his citizen's rights but equally concerned with the certain destruction to the ecosystem and especially ancient water systems that can never be «fixed.»

A voyage to the outer edges of Australia's Great Barrier Reef has brought back pieces of an ancient, fossilized ancestor to the vast, living ecosystem.

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.

Elder Dragons are rare, elusive monsters that have lived since ancient times, and are able to bring about the destruction of entire ecosystems if they desire.

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.