نتایج جستجو برای: iucn red list

تعداد نتایج: 261354  

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2009
Matt W Hayward

Thorough evaluation has made the International Union for Conservation of Nature (IUCN) Red List the most widely used and accepted authority on the conservation status of biodiversity. Although the system used to determine risk of extinction is rigorously and objectively applied, the list of threatening processes affecting a species is far more subjectively determined and has not had adequate re...

2017
Pedro Cardoso

The International Union for the Conservation of Nature Red List is the most useful database of species that are at risk of extinction worldwide, as it relies on a number of objective criteria and is now widely adopted. The R package red - IUCN Redlisting Tools - performs a number of spatial analyses based on either observed occurrences or estimated ranges. Functions include calculating Extent o...

Journal: :Zootaxa 2014
Claudia Hemp Klaus-Gerhard Heller Elżbieta Warchałowska-Śliwa Andreas Hemp

The female of Tropidonotacris grandis is described and information on distribution, habitat, song, chromosomes and nymphal development of this species given. The populations of northern Tanzania all occur in deciduous dry forest, a habitat highly endangered by destruction and therefore T. grandis must be regarded at least as a vulnerable species according to the IUCN red list. 

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