- 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 technique used to analyse a photograph of a quadrat (photo-quadrat), in which a grid of random dots is placed over an image of the photo-quadrat. It assumes that the proportion of dots that lies on a substrate is equal to the proportional area of the substrate.
Industry:Natural environment
An area favoured for birth or egg deposition and where juveniles and immature members of a community feed and grow. For example, mangrove root areas serve as nursery grounds for many coral reef fishes.
Industry:Natural environment
Any discrete area that is used by a species for reproduction or obtaining other resources, such as food and shelter; an area of distinct habitat type; patchiness occurs when a habitat is divided (fragmented)into usable areas, called "patches," which are separated from one another by nonusable habitat .
Industry:Natural environment
Describes an immobile organism because of its attachment to a substrate. The term has also been applied to organisms, such as anemones, that move very slowly.
Industry:Natural environment
In genetic engineering, an easily identified gene that is inserted into an organism, along with a desired gene. The presence of the marker gene demonstrates that the transformation was successful.
Industry:Natural environment
Membranes possessed by amniote (reptiles, birds, and mammals) embryos that allow these classes of vertebrates to be free of aquatic habitats for reproduction, and in their evolution, occupy terrestrial habitats. The membranes are the amnion, yolk sac, allantois and chorion.
Industry:Natural environment
The leathery case which contains the developing embryo in hagfishes, sharks, rays, skates and chimaeras; also called a "mermaid's purse".
Industry:Natural environment
The rupture of a cell nucleus, releasing disintegrated chromatin.
Industry:Natural environment
A coral disease characterised by circular lesions with coral tisue degradation on the Caribbean elkhorn coral, Acropora palmata. The pathogen is a bacterium, Serratia marcescen.
Industry:Natural environment
