Sentences with phrase «dieback on»

These Siberian pines are very bulbous — you can see there's been dieback on certain parts of the trunk, and then you can see there's regrowth.

Not exact matches

Tens of millions of ash trees across Europe are dying from the Hymenoscyphus fraxinea fungus — the most visible signs that a tree is infected with ash dieback fungus are cankers on the bark and dying leaves.

The material on Amazon forest dieback was in the IPCC assessment as were the numbers on recent sea level (thought the IPCC did not use the information on recent contributions from land ice in their estimate for 21st century warming.)

Tighter controls on timber and plant movements into Europe are necessary to prevent further disastrous effects of plant diseases, a new study of the ash - dieback pathogen advises.

Exeter scientists have discovered that asexual spores of the ash dieback fungus (Hymenoscyphus fraxineus) are infectious and can germinate on leaves or infect seedlings via soil.

A Queen Mary scientist will embark on a new project to decode the ash tree's entire genetic sequence in the hope of stopping Britain's trees from being completely devastated by the Chalara ash dieback fungal disease.

Forest dieback is a major result of a potential shift to a perpetually positive IPO which is represented in some models and the methodology of this re-estimate of carbon budgets relies on recent cooling that was caused by shifts in SO2 emissions from the western hemisphere to the eastern in the 2000's.

«Nightmarish scenarios follow from these data,» he goes on, «multiyear drought punctuated by intense heat waves leading to rapid ecosystem diebacks that in turn trigger other nonlinear processes of erosion and fire.

Another reason why Willis thinks we ought not be overly concerned by coral reef dieback is that coral grows relatively quickly, at the rate of 30 - 40 mm per year (see Willisâ $ ™ s post on 11/01/06 posting on â $ œThe End of the Global Warming Debateâ $?

-- Dr. Bernard Ulrich, University of Gottingen, on forest dieback in Germany, 1981

-- The second, being the observed change of some trees» CO2 - enhanced growth storing more carbon in their standing wood, is of very limited potential and is not rising at anywhere near the rate of the countervailing increase since 1980 of the impacts on forests of droughts, heat waves and surface ozone concentrations in terms of growth - suppression and of pests, ailments, dieback and rising frequency, duration and intensity of wildfires.

We focus on comparing impacts from two particular forests that historically demonstrate vulnerability to increased rates of tree loss from dieback and / or deforestation.

abrupt climate change occurring «over periods as short as decades or years,» which could be brought on by positive feedbacks triggered by such events as ice sheet collapse on a large scale, the collapse of part of the Gulf Stream, dieback of the Amazon forest, or coral reef die - off.

They are cited throughout the literature on Amazon dieback.