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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."
Some species-focused databases attempt to compile comprehensive data about particular species , while others focus on particular species attributes, such as checklists of species in a given area (FEOW) or the conservation status of species (CITES or IUCN Red List). Nomenclators act as summaries of taxonomic revisions and set a key between ...
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.
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.
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.
Biodiversity conservation focuses primarily on preserving the diversity of species, sustainable utilization of species and ecosystems, and maintaining life-supporting systems and essential ecological processes. Conservation of species is an important sustainability goal to prevent biodiversity loss. As urbanization is expanding across the globe ...
The Red List of 2012 was released 19 July 2012 at Rio+20 Earth Summit; [17] nearly 2,000 species were added, [18] with 4 species to the extinct list, 2 to the rediscovered list. [19] The IUCN assessed a total of 63,837 species which revealed 19,817 are threatened with extinction.
A neutral model that can analytically predict both the relative species abundance (RSA) at steady-state and the STD at time t has been presented in Azaele et al. (2006). [12] Within this framework the population of any species is represented by a continuous (random) variable x, whose evolution is governed by the following Langevin equation: