- Industry: Government
- Number of terms: 30456
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
A plant that grows partly or wholly in water whether rooted in the substrate or floating without anchorage, as the water hyacinth; an aquatic plant.
Industry:Natural environment
A type of natural selection that removes individuals from one end of a phenotypic distribution and thus causes a shift in the distribution. The frequency of an allele is changed in a constant direction, either toward or away from fixation for that allele. Directional selection occurs when individuals at one phenotypic extreme have an advantage over individuals with more common phenotypes.
Industry:Natural environment
An external layer of secreted cuticular material in many Anthozoa. The term is synonymous with "cuticle." In woody plants, the periderm is a protective secondary tissue produced by the cork cambium .
Industry:Natural environment
Fishes in the orders Clupeiformes (herrings and herring-like fishes), and Elopiformes (ladyfishes and tarpons) whose flesh might contain a toxin, clupeotoxin, by ingesting certain dinoflagellates which contain the toxin.
Industry:Natural environment
One of many genes of small effect that influence the development of a quantitative trait; results in continuous variation and in quantitative inheritance.
Industry:Natural environment
Sandy areas found in depressions and gullies in a coral reef, or between patch reefs, or in deeper areas below or beyond the reef. Seemingly near barren during the day, at night sand flats teem with biological activity; also a sandy tidal flat barren of vegetation. A tidal flat is an extensive, nearly horizontal, marshy or barren tract of land that is alternately covered and uncovered by the tide. It consists of unconsolidated sediment (mostly mud and sand).
Industry:Natural environment
The cultivation of marine organisms under controlled conditions; a synonym for marine aquaculture.
Industry:Natural environment
The number or amount of something, e.g., the number of organisms per unit of habitat space or number of individuals in a stock or a population.
Industry:Natural environment
The study of everything that happens to an organism’s body after it dies; includes probable cause and manner of death, movement of the body, chemical and physical alteration, burial, decomposition, diagenesis and fossilization.
Industry:Natural environment
A bony fish in the family Holocentridae. Squirrelfishes are small, brightly coloured spiny-finned fishes, commonly found living on coral reefs. Most squirrelfishes are reddish in colour mixed with silver and white. All species have large eyes. During the day they are usually found hiding in crevices or beneath ledges. They are crepuscular species, most active at low light levels and at night.
Industry:Natural environment
