An ecosystem consists of the organisms in an area linked together with their physical and chemical environment. Climate change influences the productivity, distribution, diversity, and seasonality of ecosystems.
Spiny forest of Ifaty, Madagascar, featuring various baobao species, Madagascar ocotillo, and other vegetation.
Home and Away: Are Invasive Plant Species
Really That Special?
Invasive plants are a major environmental problem--but how abundant are they?
Invasive plant species...
Colorado River water supply Last Updated on 2012-09-11 at 14:20
This curriculum module will look at the Colorado River water supply, climate issues and water extraction issues. We will study the data, the possible consequences to various... More »
Ocean acidification troublesLast Updated on 2012-08-21 at 21:50
The seas in which corals and other calcifying species dwell are turning acidic, their pH slowly dropping as Earth's oceans acidify in response to increased carbon dioxide... More »
Amphibians: Tough Times for Toads and FrogsLast Updated on 2012-08-13 at 12:03
Amphibians have not fared very well in recent years. Since 1980, 32.3% of amphibious species (1,856 out of 5,743 known species) have declined in population size, 7.4% sit... More »
Agriculture IILast Updated on 2012-07-26 at 11:56
Humans began to cultivate food crops about 10,000 years ago. Prior to that time, hunter-gatherers secured their food as they traveled in the nearby environment. When they... More »
Drought in Eastern AfricaLast Updated on 2012-07-12 at 10:51
More Frequent Drought
Likely in Eastern Africa
The increased frequency of drought observed in eastern Africa over the last 20 years is likely to continue as long as... More »
Predators: influence over habitatsLast Updated on 2012-06-14 at 21:52
Study of grasshoppers' diets shows that animals are an important part of organic matter decomposition. While being hunted, prey animal diets may affect how soil releases... More »