The scientists» analysis of more than 25,000 bones and 170,000 live animals showed that the distribution of species among the bones corresponded well to the living community, even through periods of
rapid ecological change.
Although the Biological Review Team acknowledged «there is ample evidence that bearded seals have adapted successfully many times to both large and
rapid ecological changes» they argued «history is not, on its own, an assurance that bearded seals can adapt to the changes projected for the foreseeable future.»
Not exact matches
It further states that research on living resources in the Gulf show long term
ecological changes in species diversity and a large scale, often
rapid change, in the ecosystem's food - web that is both «difficult and impossible to reverse.»
Although an evolutionary innovation can open up new
ecological niches, traits which are essentially beneficial can put species at a disadvantage in the context of
rapid environmental
changes.
On a planet that is undergoing profound
change, the Arctic is experiencing some of the most
rapid changes, leading to historic, unexpected, and largely unprecedented physical and
ecological transformation.
Large specialized carnivores don't do well with large - scale
ecological change, especially if is
rapid.
In his concluding chapter, Snyder describes the Holocaust as an act of «
ecological panic» -LSB-...] In the 21st century, he speculates,
rapid and destructive climate
change could lead to wholesale food shortages caused by desertification of huge areas of the planet, or alternatively drastic economic collapse and state bankruptcies.
With the
rapid changes in the arctic environment, the North Slope of Alaska (NSA) has become a focal point for atmospheric and
ecological research.
These events resulted in substantial
ecological and economic impacts, including sustained loss of kelp forests, coral bleaching, reduced surface chlorophyll levels due to increased surface layer stratification, mass mortality of marine invertebrates due to heat stress,
rapid long - distance species» range shifts and associated reshaping of community structure, fishery closures or quota
changes, and even intensified economic tensions between nations.»
[G] iven the
rapid pace of
ecological change in the Arctic, the long generation time, and the highly specialised nature of polar bears, it is unlikely that polar bears will survive as a species if the sea ice disappears completely.
At best,
changes of such magnitude would trigger dramatic re-organization of ecosystems across the globe that would play out over the next few centuries; at worst, extinction rates would elevate considerably for the many species adapted to pre-global warming conditions, via mechanisms described above (inability to disperse or evolve fast enough to keep pace with the extremely
rapid rate of climate
change, and disruption of
ecological interactions within communities as species respond individualistically).
Ecological surprises include
rapid and abrupt
changes in temperature and precipitation, leading to an increase in extreme events such as floods, fires and landslides, increases in eutrophication, invasion by alien species, or
rapid and sudden increases in disease (Carpenter et al., 2005).
This
rapid surge in greenhouse gases could trigger unprecedented climate
change and lead to «severe
ecological and economic disruptions,» the report said.