The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of 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 Chinese paddlefish, also known as Chinese swordfish, is a reportedly extinct species of fish that was native to the Yangtze and Yellow River basins in China. At maturity, the species measured an average length of 3 m (9.8 ft), making it one of the largest species of primarily freshwater fishes. It was the only species in the genus Psephurus and one of two living species in the paddlefish family (Polyodontidae), the other being the American paddlefish. It was an anadromous species, meaning that it spent part of its adult life at sea, while migrating upriver to spawn. Unlike its close relative, the Chinese paddlefish was largely piscivorous, and mainly preyed on small to medium-sized fish.
Haliotis cracherodii, the black abalone, is a species of large edible sea snail, a marine gastropod mollusk in the family Haliotidae, the abalones.
The conservation status of a group of organisms indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation status: not simply the number of individuals remaining, but the overall increase or decrease in the population over time, breeding success rates, and known threats. Various systems of conservation status exist and are in use at international, multi-country, national and local levels as well as for consumer use.
The halfmoon, also known as the blue perch, is a species of marine ray-finned fish, a sea chub from the subfamily Scorpidinae, part of the family Kyphosidae. It is native to the coasts of the eastern Pacific Ocean off western North America. It is fished for using hook and line and it is a desirable food fish.
A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation. They do not qualify as threatened, near threatened, or conservation dependent.
A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be endangered in the near future, although it does not currently qualify for the threatened status.
Pectinaria is a genus of sand tube-building annelid fanworms in the family Pectinariidae.
Fibulacamptus bisetosus is a species of harpacticoid copepod in the family Canthocamptidae. It is found in Australia.
Fibulacamptus gracilior is a species of harpacticoid copepod in the family Canthocamptidae. It is found in Australia.
Haplophthalmus abbreviatus is a species of woodlouse in the family Trichoniscidae. It is found in Europe & Northern Asia.
Haplophthalmus rhinoceros is a species of woodlouse in the family Trichoniscidae. It is found in Europe and Northern Asia.
Hesperodiaptomus augustaensis is a species of calanoid copepod in the family Diaptomidae.
Hesperodiaptomus is a genus of copepods in the family Diaptomidae, containing 18 species. Two species – H. augustaensis and H. californiensis – are endemic to the United States and listed as vulnerable species on the IUCN Red List.
Mycena californiensis is a species of fungus in the family Mycenaceae. It is a common and abundant species in the coastal oak woodlands of California, where it grows saprobically, feeding on the fallen leaves and acorns of various oak species. First described in 1860 by Berkeley and Curtis, the species was collected four years earlier during an exploring and surveying expedition. It was subsequently considered a doubtful species by later Mycena researchers, until a 1999 publication validated the taxon. Mycena elegantula is considered a synonym.
H. californiensis may refer to:
The kelp pipefish is a species of the pipefish. It inhabits the eastern Pacific from the Bodega Bay in northern California, United States, to southern Baja California, Mexico. It is a marine subtropical demersal fish, up to 50 centimetres (20 in) length.
Atherinopsis californiensis, the jack silverside or jacksmelt, is a species of neotropical silverside native to the Pacific coast of North America from Oregon, United States to southern Baja California, Mexico. This species grows to 45 cm (18 in) in total length and is important commercially as a source of human food. It is the only known member of its genus. The adults occur in inshore areas, such as bays. They form schools. This species is a demersal spawners in inshore habitats, it is oviparous and the larvae are planktonic, living at the very surface of the water and feeding on phytoplankton. The eggs are attached to one another and to the substrate by adhesive filaments in the chorion.
The Californian conger, also known as the ringeye conger, is an eel in the family Congridae. It was described by Robert H. Kanazawa. It is a tropical, marine eel which is known from the eastern central and southeastern Pacific Ocean, including Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, and Peru. It is known to dwell at a depth of 50 metres. Males reach an average total length of 40 centimetres, but can reach a maximum TL of 60 cm.
Heteropodagrion sanguinipes is a species of damselfly in the family Thaumatoneuridae. It is found in South America.
