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TreeHugger is a sustainability website that reports on news, and other subjects like eco-friendly design, homes, and gardens. It was rated the top sustainability blog of 2007 by Nielsen Netratings, [1] and was included in Time Magazine's 2009 blog index as one of the top twenty-five blogs. [2] The website boasts "over 100 expert writers."
Classification and spatial representation of ecosystems is a major challenge in itself. [30] While a standard taxonomy of organisms has existed for nearly 300 years, [ 31 ] the principles for systematization of ecosystem diversity have only been laid out recently and still require wider adoption.
The IUCN Red List of Threatened Species by the International Union for Conservation of Nature is the best known worldwide conservation status listing and ranking system. . Species are classified by the IUCN Red List into nine groups set through criteria such as rate of decline, population size, area of geographic distribution, and degree of population and distribution fragmenta
A habitat or species management area (IUCN Category IV) is similar to a natural monument or feature, but focuses on more specific areas of conservation (though size is not necessarily a distinguishing feature), like an identifiable species or habitat that requires continuous protection rather than that of a natural feature. These protected ...
Although biodiversity loss can be monitored simply as loss of species, effective conservation demands the protection of species within their natural habitats and ecosystems. Following human migration and population growth, species extinctions have progressively increased to a rate unprecedented since the Cretaceous–Paleogene extinction event.
Conservationists have claimed that not all the species can be saved, and they have to decide which their efforts should be used to protect. This concept is known as the Conservation Triage. [166] The extinction threat is estimated to range from 15 to 37 percent of all species by 2050, [182] or 50 percent of all species over the next 50 years. [15]
The rate of species loss is greater now than at any time in human history, with extinctions occurring at rates hundreds of times higher than background extinction rates. [35] [38] [39] and expected to still grow in the upcoming years. [39] [40] [41] As of 2012, some studies suggest that 25% of all mammal species could be extinct in 20 years. [42]
Species evenness is the relative number of individuals of each species in a given area. [1] Species richness [2] is the number of species present in a given area. Species diversity [3] is the relationship between species evenness and species richness. There are many ways to measure biodiversity within a given ecosystem.