Sentences with phrase «causing poleward shifts»
It is no surprise therefore that coastal marine species have shown some of the fastest responses to climate change in any system, with species - specific responses to thermal stress causing poleward shifts in biogeographic distributions towards cooler environments, as well as changes in phenology and regime shifts.
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«Regardless of the cause,» the authors note, «the poleward shift of the jet streams and the associated subtropical dry zone, if it continues, could have important societal implications.»
Other aspects of global warming's broad footprint on the world's ecosystems include changes in the abundance of more than 80 percent of the thousands of species included in population studies; major poleward shifts in living ranges as warm regions become hot, and cold regions become warmer; major increases (in the south) and decreases (in the north) of the abundance of plankton, which forms the critical base of the ocean's food chain; the transformation of previously innocuous insect species like the Aspen leaf miner into pests that have damaged millions of acres of forest; and an increase in the range and abundance of human pathogens like the cholera - causing bacteria Vibrio, the mosquito - borne dengue virus, and the ticks that carry Lyme disease - causing bacteria.
Model projections indicate that the Hadley Circulation will shift its downward branch poleward in both the Northern and Southern Hemispheres, causing drying as a result.
Firstly, the intensification and poleward shift of the westerly wind causes a strengthening of the upper overturning circulation.
NSF - funded scientists believe at least part of the answer lies in the frozen tundras of Siberia, where greater - than - average autumn snowfall causes weather patterns in the Arctic regions to shift southward into the midlatitudes during the winter, while less - than - average snowfall causes the patterns to retreat poleward.
Melting Arctic ice - sheets will reduce ocean salinities (IPCC, 2001), causing species - specific shifts in the distribution and biomass of major constituents of Arctic food webs, including poleward shifts in communities and the potential loss of some polar species (such as the narwhal, Monodon monoceros).