In the face of today's ecological crises, could we use cloning to reduce or reverse the impact we've had on our world?
There is an increasing awareness of ecosystem services and use of ecological engineering in today's search for more sustainable wastewater treatment systems, but there is still great uncertainty about how to compare and evaluate the ecological sustainability of different systems.
Several studies have been conducted to compare the classification systems used by American undergraduates, who do not need to rely on ecological knowledge in today's industrialized world, and members of an Itzaj-Mayan culture, who are still dependent on the environment for their survival (Lopez et al. 1997, Atran 1999, Coley et al. 1999, Atran et al. 2004).
"Cleared slopes are actually more like forests than graded slopes," said Jennifer W. Burt, the lead author of the study, published in last month's issue of Ecological Applications.
The findings, reported in tomorrow's issue of Nature, suggest that the ecological consequences of some of the world's 36,000 dams may be felt by large water bodies rather than simply the dammed rivers themselves and the surrounding lands.
In 2009, P. cespitosum's ecological range included sites with higher average soil moisture than those it inhabited in 1994, as well as wetter microsites (Table 1; Fig. 2).
In 1959 Mr. McHarg's ecological focus intensified when he created a course titled "Man and the Environment," a wide-ranging exploration of the relationship between human evolution and natural history.
The change between 1994 and 2009 in P. cespitosum's ecological distribution within northeastern North America does not appear to be related to such changes within that range, since we found no changes in the presence or abundance of interacting plant or animal species.
Physiological versatility was measured in 2006 and ecological resilience between 2006 200814.
This week, he invited in France's ecological protest groups, more used to taking their grievances to the streets than to the Elysée Palace.
