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The Ocean Biodiversity Information System (OBIS), formerly Ocean Biogeographic Information System, is a web-based access point to information about the distribution and abundance of living species in the ocean. It was developed as the information management component of the ten year Census of Marine Life (CoML) (2001-2010), but is not limited ...
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
2008. Headquarters. Ostend, Belgium. Coordinates. 51°13′40.25″N 2°56′28.07″E / 51.2278472°N 2.9411306°E / 51.2278472; 2.9411306. Website. marinespecies.org. The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. [1]
Lake George, New York, an oligotrophic lake. The Trophic State Index (TSI) is a classification system designed to rate water bodies based on the amount of biological productivity they sustain. [1] Although the term "trophic index" is commonly applied to lakes, any surface water body may be indexed. The TSI of a water body is rated on a scale ...
The number of additional fossil species is estimated between 60,000 and 100,000, [5] and the proportion of undescribed species is very high. Many taxa remain poorly studied. [6] Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms.
The Rio Grande cutthroat trout (Oncorhynchus virginalis virginalis) [2], a member of the family Salmonidae, is found in northern New Mexico and southern Colorado in tributaries of the Rio Grande. [3][4] It is one of 9 subspecies [2] of the Rocky Mountain cutthroat trout [2][5][6][7] native to the western United States, and is the state fish of ...
Algae (UK: / ˈ æ l ɡ iː / AL-ghee, US: / ˈ æ l dʒ iː / AL-jee; [3] sg.: alga / ˈ æ l ɡ ə / AL-gə) are any of a large and diverse group of photosynthetic, eukaryotic organisms.The name is an informal term for a polyphyletic grouping that includes species from multiple distinct clades.
Taxonomy of diatoms. Light microscopy of several species of living freshwater diatoms. Diatoms belong to a large group called the heterokonts, which include both autotrophs such as golden algae and kelp; and heterotrophs such as water moulds. The classification of heterokonts is still unsettled: they may be designated a division, phylum ...