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The blue wildebeest (Connochaetes taurinus), also called the common wildebeest, white-bearded gnu or brindled gnu, is a large antelope and one of the two species of wildebeest. It is placed in the genus Connochaetes and family Bovidae , and has a close taxonomic relationship with the black wildebeest .
In some areas, the blue wildebeest migrates over long distances in the winter, whereas the black wildebeest does not. [31] The milk of the black wildebeest contains a higher protein, lower fat, and lower lactose content than the milk of the blue wildebeest. [32] Wildebeest can live more than 40 years, though their average lifespan is around 20 ...
Pelagic zones. The ocean can be conceptualized as being divided into various zones, depending on depth, and presence or absence of sunlight.Nearly all life forms in the ocean depend on the photosynthetic activities of phytoplankton and other marine plants to convert carbon dioxide into organic carbon, which is the basic building block of organic matter.
Worldwide, continental shelves occupy a total area of about 24 million km 2 (9 million sq mi), 8% of the ocean's total area and nearly 5% of the world's total area. [ 29 ] [ 30 ] Since the continental shelf is usually less than 200 metres deep, it follows that coastal habitats are generally photic , situated in the sunlit epipelagic zone .
From shallow waters to the deep sea, the open ocean to rivers and lakes, numerous terrestrial and marine species depend on the surface ecosystem and the organisms found there. [1] The ocean's surface acts like a skin between the atmosphere above and the water below, and hosts an ecosystem unique to this environment.
Ocean chlorophyll concentration as a proxy for marine primary production. Green indicates where there are a lot of phytoplankton, while blue indicates where there are few phytoplankton. – NASA Earth Observatory 2019. [1] Marine primary production is the chemical synthesis in the ocean of organic compounds from atmospheric or dissolved carbon ...
The pelagic food web, showing the central involvement of marine microorganisms in how the ocean imports nutrients from and then exports them back to the atmosphere and ocean floor. A marine food web is a food web of marine life. At the base of the ocean food web are single-celled algae and other plant-like organisms known as phytoplankton.
The western white-bearded wildebeest on average reaches 1.30-1.42 m (4.26-4.65 feet) tall, and weighs 180-225 kg (396-496 pounds) at its maximum weight. It has a long white beards, black front face, and a darker colored body, smaller horns, and a swaying dark black tail.