- Industry: Government
- Number of terms: 30456
- Number of blossaries: 0
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
A two-stage type of cell division in sexually reproducing organisms that results in the development of sperm and egg cells . In meiosis, a diploid cell divides to produce four haploid cells, each with half the original chromosome content. In organisms with a diploid life cycle, the products of meiosis are called gametes. In organisms with an alternation of generations, the products of meiosis are called spores.
Industry:Natural environment
An environment characterised by extremes in growth conditions, including temperature, salinity, ph, among others .
Industry:Natural environment
Any species of bony fishes in the family Apogonidae. Cardinal fishes are often brightly coloured with attractive patterns, usually in shades of red or brown. Most are small tropical marine species, although some live in brackish and even fresh water waters.
Industry:Natural environment
ESI maps serve as quick references for oil and chemical spill responders and coastal zone managers. They contain three kinds of information: (1) Shorelines (color-coded to indicate their sensitivity to oiling); (2) Sensitive biological resources (such as seabird colonies and marine mammal hauling grounds. They are depicted by special symbols on the maps); and (3) Sensitive human-use resources (such as water intakes, marinas, and swimming beaches). Project scientists have created collections of ESI maps, called ESI atlases, for most coastal areas in the US, including Alaska, Hawaii, the Great Lakes, and the Trust Territories. Each atlas includes maps and additional data and information. Starting in 1995 with the outer coast of California, ESI project members began using a Geographic Information System (GIS) to produce updated ESI maps that are higher in quality and can be more readily reproduced.
Industry:Natural environment
In sponges, an internal cavity that is lined with choanocytes.
Industry:Natural environment
The common name of a large group of over 800 species within seven families of bony fishes in the suborder Blennioidei. Blennies are small, usually scaleless fishes with comb-like teeth living in coastal and coral reef areas, including seagrass beds and tidepools. At least one species lives in fresh water. Most are are characterised by possessing blunt foreheads, elongated, tapering bodies, and a continuous long dorsal fin. The pelvic fins are usually anterior to the pelvic fins, and in the jugular in position. Many species are cryptic or inhabit the surge zone. Most are herbivores.
Industry:Natural environment
The movement of genes through or between populations as the result of out-crossing and natural selection.
Industry:Natural environment
The sonar-like ability used by bats, dolphins, some whales, and two groups of cave-dwelling birds to detect objects in their environment. Using echolocation, the animal emits high-frequency sounds that reflect off of an object and return to the ears or other sensory receptors.
Industry:Natural environment
With refefence to oil spills, to simulate a spill-type release in a flow-through laboratory setting, an initial and relatively high concentration of a contaminant is allowed to dissipate under continuous water flow .
Industry:Natural environment
A dating method used to determine the age of samples containing carbon. The method measures the disintegration of the 14C atom. 14C is produced in the atmosphere by cosmic ray bombardment, and has a half-life of 5,570 years, making it useful for dating samples in the range of 0-40,000 years.
Industry:Natural environment
