decrease in species diversity

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• Species richness — is the number of species in a given area. It is represented in equation form as S.Typically, species richness is used in conservation studies to determine the sensitivity of ecosystems and their resident species. The actual number of species… …   Wikipedia

• Diversity — Science and technology Biodiversity, the degree of variation of life forms within a given ecosystem, biome, or an entire planet. Diversity Index, a statistic intended to assess the diversity of any population in which each member belongs to a… …   Wikipedia

• diversity — noun ADJECTIVE ▪ considerable, enormous, extraordinary, great, immense, remarkable, rich, tremendous, wide ▪ There is need for g …   Collocations dictionary

• Endangered species — An endangered species is a population of an organism which is at risk of becoming extinct because it is either few in numbers, or threatened by changing environmental or predation parameters. An endangered species is usually a taxonomic species,… …   Wikipedia

• National Invasive Species Act — The National Invasive Species Act (NISA) was sponsored by U.S. House Representative Steve LaTourette on September 28, 1996, and it became Public Law No. 104 332 (H.R. 4283) on October 26, 1996. The official purpose, as introduced, is: “To provide …   Wikipedia

• Texella reddelli — Taxobox name = Bee Creek Cave Harvestman fossil range = Late Pleistocene Recent status = EN status system = iucn3.1 trend = stable regnum = Animalia phylum = Arthropoda classis = Arachnidaia ordo = Laniatores familia = Phalangodidae genus =… …   Wikipedia

• Manasbal Lake — Location Kashmir Valley Coordinates …   Wikipedia

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• Tropical Andes — is a hotspot named the “global epicenter of biodiversity” according to the Critical Ecosystem Partnership Fund.The tropical Andes area is an area of rich biodiversity. This location holds about 45,000 plant species of which 20,000 are endemic.… …   Wikipedia

• Permian–Triassic extinction event — …   Wikipedia

• Conservation grazing — is the use of semi feral or domesticated grazing livestock to maintain and increase the biodiversity of natural or semi natural grasslands, heathlands, wood pasture, wetlands and many other habitats.[1][2] Conservation grazing is generally less… …   Wikipedia