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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 ...
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
Following human migration and population growth, species extinctions have progressively increased to a rate unprecedented since the Cretaceous–Paleogene extinction event. [citation needed] Known as the Holocene extinction event this current human-induced extinction of species ranks as one of the world's six mass extinction events. Some ...
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.
Population viability analysis (PVA) is a species-specific method of risk assessment frequently used in conservation biology.It is traditionally defined as the process that determines the probability that a population will go extinct within a given number of years.
The All Species Foundation (stylized as ALL Species Foundation) was an organization aiming to catalog all species on Earth by 2025 through their All Species Inventory initiative. [1] The project was launched in 2000 by Kevin Kelly , Stewart Brand and Ryan Phelan.