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Data Deficient
A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessarily indicate that the species has not been extensively studied; but it does indicate that little or no information is available on the abundance and distribution of the species. The IUCN recommends that care be taken to avoid classing species as "data deficient" when the absence of records may indicate dangerously low abundance: "If the range of a taxon is suspected to be relatively circumscribed, if a considerable period of time has elapsed since the last record of the taxon, threatened status may well be justified""The Categories," in IUCN (1983). (see also precautionary principle). See also * IUCN Red List data deficient species * List of data deficient amphibians * IUCN Red List data deficient species (Annelida) * List of data defic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List Data Deficient Species (Cnidaria)
On 29 January 2010, the IUCN Red List of Threatened Species identified 149 data deficient species in the Cnidaria phylum ( Animalia kingdom). Anthozoa Actiniaria Edwardsiidae Scleractinia Acroporidae Agariciidae Astrocoeniidae Caryophylliidae Dendrophylliidae Euphylliidae Faviidae Flabellidae Fungiidae Meandrinidae Merulinidae Mussidae Oculinidae Pectiniidae Pocilloporidae Poritidae Siderastreidae Turbinoliidae Hydrozoa Milleporina Fire corals (''Millepora'') are a genus of colonial marine organisms that exhibit physical characteristics similar to that of coral. The name coral is somewhat misleading, as fire corals are not true corals but are instead more closely related ... Milleporidae References * IUCN 2009. IUCN Red List of Threatened Species, v2009.2. Source of the above listonline IUCN Red List Retrieved d.d. 29 January 2010. {{DEFAULTSORT:Iucn Red List Data Deficient Species (Cnidaria) *Cnidaria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data Deficient Species
A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessarily indicate that the species has not been extensively studied; but it does indicate that little or no information is available on the abundance and distribution of the species. The IUCN recommends that care be taken to avoid classing species as "data deficient" when the absence of records may indicate dangerously low abundance: "If the range of a taxon is suspected to be relatively circumscribed, if a considerable period of time has elapsed since the last record of the taxon, threatened status may well be justified""The Categories," in IUCN (1983). (see also precautionary principle). See also * IUCN Red List data deficient species * List of data deficient amphibians * IUCN Red List data deficient species (Annelida) * List of data def ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Data Deficient Reptiles
As of September 2016, the International Union for Conservation of Nature (IUCN) lists 910 data deficient reptile species. 18% of all evaluated reptile species are listed as data deficient. Of the subpopulations of reptiles evaluated by the IUCN, two species subpopulations have been assessed as data deficient. This is a complete list of data deficient reptile species evaluated by the IUCN. Species which have data deficient subpopulations (or stocks) are indicated. Turtles and tortoises Species Subpopulations *Leatherback sea turtle ''(Dermochelys coriacea)'' (2 subpopulations) Lizards There are 419 lizard species evaluated as data deficient. Anguids Diplodactylids Chameleons Anoles Gekkonids Wall lizards Skinks Spectacled lizards Sphaerodactylids Night lizards Worm lizards Neotropical ground lizards Dragon lizards Phrynosomatids Varanids Liolaemids Other lizard species Snakes There are 480 snake species evaluated as d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Data Deficient Plants
As of September 2016, the International Union for Conservation of Nature (IUCN) lists 1674 data deficient plant species. 7.6% of all evaluated plant species are listed as data deficient. The IUCN also lists 18 subspecies and 57 varieties as data deficient. No subpopulations of plants have been evaluated by the IUCN. This is a complete list of data deficient plant species, subspecies and varieties evaluated by the IUCN. Algae There are 49 alga species evaluated as data deficient. Green algae *'' Ectochaete perforans'' *'' Rhizoclonium robustum'' Red algae Charophyta Bryophytes There are seven bryophyte species evaluated as data deficient. Mosses Liverworts Pteridophytes There are 58 pteridophyte species evaluated as data deficient. Leptosporangiate ferns There are 50 species in the class Polypodiopsida evaluated as data deficient. Polypodiales There are 42 species in the order Polypodiales evaluated as data deficient. =Dryopteridaceae= = Polypodiaceae= =Blech ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Data Deficient Molluscs
As of September 2016, the International Union for Conservation of Nature (IUCN) lists 1988 data deficient mollusc species. 27% of all evaluated mollusc species are listed as data deficient. The IUCN also lists 40 mollusc subspecies as data deficient. No subpopulations of molluscs have been evaluated by the IUCN. This is a complete list of data deficient mollusc species and subspecies evaluated by the IUCN. Gastropods There are 1526 species and 37 subspecies of gastropod evaluated as data deficient. Vetigastropoda *'' Teinostoma fernandesi'' *'' Teinostoma funiculatum'' Stylommatophora Stylommatophora includes the majority of land snails and slugs. There are 392 species and 32 subspecies in the order Stylommatophora evaluated as data deficient. Partulids Subulinids Species Subspecies *'' Opeas nothapalinus crenatum'' *'' Pseudoglessula leroyi fasciata'' Achatinellids Endodontids Charopids Helicarionids Orthalicids Euconulids Rhytidids Streptaxid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Data Deficient Mammals
As of September 2016, the International Union for Conservation of Nature (IUCN) lists 783 data deficient Mammalia, mammalian species. 14% of all evaluated mammalian species are listed as data deficient. The IUCN also lists 30 mammalian subspecies as data deficient. Of the subpopulations of mammals evaluated by the IUCN, four species and/or subpopulations have been assessed as data deficient. This is a complete list of data deficient mammalian species and subspecies evaluated by the IUCN. Species and subspecies which have data deficient subpopulations (or stocks) are indicated. Where possible common names for taxa are given while links point to the scientific name used by the IUCN. Primates There are 20 species and 26 subspecies of primate evaluated as data deficient. Hylobatidae, Gibbons Subspecies *Hylobates lar yunnanensis, Yunnan lar gibbon Lemuroidea, Lemurs Species Subspecies *Hapalemur griseus ranomafanensis, Ranomafana bamboo lemur Tarsiidae, Tarsiers Cercopithe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Data Deficient Invertebrates
As of July 2016, the International Union for Conservation of Nature (IUCN) lists 5278 data deficient invertebrate species. 29% of all evaluated invertebrate species are listed as data deficient. The IUCN also lists 57 invertebrate subspecies as data deficient. No subpopulations of invertebrates have been evaluated by the IUCN. This is a complete list of data deficient invertebrate species and subspecies as evaluated by the IUCN. Nemertea species *'' Argonemertes stocki'' Annelids Onychophora *''Mesoperipatus tholloni'' Molluscs There are 1988 mollusc species and 40 mollusc subspecies assessed as data deficient. Gastropods There are 1526 gastropod species and 37 gastropod subspecies assessed as data deficient. Vetigastropoda *'' Teinostoma fernandesi'' *'' Teinostoma funiculatum'' Stylommatophora Stylommatophora includes the majority of land snails and slugs. There are 392 species and 32 subspecies in the order Stylommatophora assessed as data deficient. = Partulids= = ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Data Deficient Insects
As of July 2016, the International Union for Conservation of Nature (IUCN) lists 1702 data deficient insect species. 28% of all evaluated insect species are listed as data deficient. No subpopulations of insects have been evaluated by the IUCN. This is a complete list of data deficient insect species and subspecies as evaluated by the IUCN. Blattodea *'' Miriamrothschildia zonatus'' Orthoptera There are 50 species in the order Orthoptera assessed as data deficient. Acridids Tettigoniids Phaneropterids Other Orthoptera species Hymenoptera There are 316 species in the order Hymenoptera assessed as data deficient. Colletids Melittids Apids Halictids Andrenids Megachilids Mantises Lepidoptera Lepidoptera comprises moths and butterflies. There are 87 species in the order Lepidoptera assessed as data deficient. Pyralids Swallowtail butterflies Lycaenids Nymphalids Skippers Other Lepidoptera species Beetles There are 377 beetle species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Data Deficient Fishes
As of September 2016, the International Union for Conservation of Nature (IUCN) lists 3191 data deficient fish species. 21% of all evaluated fish species are listed as data deficient. The IUCN also lists 12 fish subspecies as data deficient. Of the subpopulations of fishes evaluated by the IUCN, 34 species subpopulations have been assessed as data deficient. This is a complete list of data deficient fish species and subspecies evaluated by the IUCN. Species and subspecies which have data deficient subpopulations (or stocks) are indicated. Cartilaginous fishes Chondrichthyes includes sharks, rays, skates, and sawfish. There are 475 species and three subpopulations of cartilaginous fish evaluated as data deficient. Angelsharks Rays and skates There are 253 species and one subpopulation in the order Rajiformes evaluated as data deficient. Narkids Eagle rays Guitarfish species Whiptail stingrays Narcinids Species Subpopulations * Apron ray ''(Discopyge tschudii)' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Data Deficient Birds
As of December 2020, the International Union for Conservation of Nature (IUCN) lists 52 data deficient avian species. 0.47% of all evaluated avian species are listed as data deficient. No subpopulations of birds have been evaluated by the IUCN. This is a complete list of data deficient avian species evaluated by the IUCN. Where possible common names for taxa are given while links point to the scientific name used by the IUCN. Procellariiformes Gruiformes Owls Passerines Caprimulgiformes Other bird species See also * Lists of IUCN Red List data deficient species * List of least concern birds * List of near threatened birds * List of vulnerable birds * List of endangered birds As of December 2019, the International Union for Conservation of Nature (IUCN) lists 460 endangered avian species. 4% of all evaluated avian species are listed as endangered. No subpopulations of birds have been evaluated by the IUCN. For a s ... * List of critically endangered bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
