Tag Archives: biology

Big animals’ extinction forever alters environment, study shows

… them,according to a joint report by UC Berkeley, Stanford University, California State University Sacramento and the University of Chile. “Ecological studies have shown that if you pull out a top predator or a key herbivore today, you get dramatic change in the ecosystem,” said Anthony Barnosky, a UC Berkeley professor of integrative biology and the study leader. “Our study makes it clear that in the past, such changes have lasted for thousands of years. These extinctions really do …

The role of species competition in biodiversity

By Christopher Packham | July 7, 2015   (Phys.org)—Over long spans, biodiversity is a fluid and shifting balance of species and influences. Species diversification occurs in response to a host of complex factors, both biotic and abiotic, and understanding them is a major challenge of evolutionary biology. A group of researchers in Sweden, Switzerland and Brazil have collaborated on a study of North American canids to show that competition from multiple carnivore clades is responsible for …

New butterfly species found in forests of Arunachal | Zee News

… weeks in March every year, presumably spending a large part of the remaining year in a dormant state in larval or pupal stages, which are still unknown and the butterflies feed primarily on bird-droppings along cool streams in the forests. Even if the butterfly species has been described and named, much of its biology is still a mystery, Yogesh said. For instance, its larval host plants, breeding behavior and precise habitat requirements are unknown. The Banded Tit was recently described in a …

Genome Study Brings Woolly Mammoth DNA Back From the Dead / Sputnik International

… evolution works, because mammoths are so closely related to living elephants, which have none of the traits they had.” According to the findings, published on Thursday in the journal ‘Cell Reports,’ the mammoth DNA had some 1.4 million genetic variants which enabled them to survive in cold environments, linked to skin and hair development, fat metabolism, temperature sensation and circadian clock biology. To continue reading this article, please click on this link: …

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