Sentences with phrase «of ancient pollens»

In particular, from the early 20th century forward, a few scientists in Sweden and elsewhere developed the study of ancient pollens («palynology»).

With the help of a graduate student, Williams will look for a kind of mammoth proxy: sporormiella, a fungus that lives in the dung of large herbivores, and grains of ancient pollen that can reveal what kind of vegetation once grew around the lake.

Not exact matches

Paleoclimatologists have probed ancient silt for grains of crop pollen and charcoal from fires, for instance, in attempts to say definitively whether and when human beings were on the scene.

In the new study, pollen grains of a modern dwarf pine species, considered an analog for the ancient species, were similarly malformed under high levels of ultraviolet - B radiation (bottom row).

Using ancient DNA, along with the remains of pollen, plants, and animals collected from lake sediments, a new study has an answer: about 12,600 years ago.

Cannabis is also mentioned in the Talmud, Judaism's key ancient text, and evidence of its pollen or oil has been found in several ancient Egyptian tombs, including that of the pharaoh Ramses II.

Bees began specializing as pollen and nectar feeders and living in social groups about 60 million years ago — their ancient biology was then suddenly expected to keep pace with a barrage of changes that humans had exposed them to over just 200 years.

The fossil find, an ancient relative of today's bleeding hearts, poses a new puzzle in the study of plant evolution: did Earth's dominant group of flowering plants evolve along with its distinctive pollen?

The team also took core samples of mud from 1 to 2 meters below the seafloor and analyzed ancient pollen to determine the age of the samples.

By varying the strength of its scent, an ancient plant drives pollen - laden bugs from males to females

(One of the smelliest proxies that they used is pollen preserved in ancient packrat middens.)

The extreme age of this clonal colony of huon pines in Tasmania was discovered by carbon - dating ancient pollen found at the bottom of a nearby lakebed.

A recent study of ancient lake - bottom sediments found layers of charcoal next to layers of shrub pollen, suggesting a close link between shrubs and wildfire.

Most telling were studies in the 1930s and 1940s of Scandinavian lakes and bogs, using ancient pollen to find what plants had lived in the region when the layers of clay («varves») were laid down.

Professor Moore knew more about ancient pollen than he did about the psychology of eighteen - year - olds and, by trying to stop us from taking plate tectonics seriously, he just made it more intriguing.

Geophysics and soil science, carbon dating, knowledge of cultural artefacts, stories and other evidence provided from ancient documents and carvings, pollen analysis, human DNA from local populations, etc. — each had evolved in independently of one - another, but would now be combined to deepen any 21st century archaeology's approach to understanding the pot.