Biology news


Science Daily July 5th 2007 ... although this is an old story it is never the less interesting. Apparently, wolves in Alaska became extinct at the same time as the mammoths and some other large mammals. It seems the region was re-colonised by grey wolves in the Holocene, from a southern species that slightly differed in anatomy. This raises the issue of overkill and Clovis people. Why would Clovis people exterminate the wolf from Alaska - and is there any evidence of Clovis people that far north.

Smoke and Fire

Science Daily ... a paper in Journal of Natural Products claims fire and smoke play a significant role in the rebirth and regeneration of forest and grassland. Smoke seems to affect and promote the germination of seeds of many species following landscape fires. A chemical component in smoke produced from burning plant material has been isolated - and is responsible for the rapid growth that takes place after fires.

Biological Enigmas

Science Daily, November 20th 2009 ... palaeobiological researchers have found evidence that during mass extinction events that punctuate the history of life, open ocean marine life was more susceptible. The research involved an analysis of fossils from the palaeo biology database and concluded that different marine environments responded differently to whatever the agents of mass destruction might be - in other words there were more deep sea fossils than shallow sea life forms.

The Tree that Refuses to Die

Discovery News, 23rd December 2009 ... a tree in southern California, stranded in a suburban environment, has the appearance of a gnarled thicket of stunted oak trees wedged between a heap of stones and boulders - but it is a biological wonder. The centre grove of trees is actually a single plant that is estimated to be 13,000 years old. Genetic analysis has revealed each of its 70 stems, or truncated branches, a few feet tall, are genetically identical - they are one and the same plant.