- Industry: Government
- Number of terms: 30456
- Number of blossaries: 0
- Company Profile:
NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
One of the short unsegmented processes located on each side of most of the body segments in many annelid worms. Parapodia (pl) function in locomotion and often also as tactile or branchial organs. In some marine snails (e.g., sea hares and pteropods) it is a broad lateral expansion of either side of the foot, forming a broad swimming organ.
Industry:Natural environment
The direction in which a vessel is pointed at any given moment.
Industry:Natural environment
The passively floating or weakly motile aquatic plants (phytoplankton) and animals (zooplankton).
Industry:Natural environment
The systematic and usually standardised collection or inventorying, processing, and analysis of representative portions of a biological community or defined site with its habitats, to determine the community structure and function.
Industry:Natural environment
Video transects are systematically sampled by identifying the benthos occurring at fixed points along the transect to the highest taxonomic level possible. The AVTAS software is used to analyse the video transects. During analysis the data are saved into a Microsoft Access¼ database. In order to eliminate confounding in data analyses due to observer biases, transects from each site are analysed by two observers. The observer who actually surveyed the reef in the field analyses transect one from site one and then every alternate transect. A second observer analyses the remaining transects.
Industry:Natural environment
A cavity ("little lake") in a matrix-like substance. For example, cartilage cells (chondrocytes) are located in lacunae in the cartilagenous matrix; bone cells (osteocytes) are located in lacunae in bone matrix.
Industry:Natural environment
A fibrous protein in the mesoglea which provides skeletal support for sea fans and other members of the Order Gorgonacea.
Industry:Natural environment
A low ridge at the seaward margin of a reef flat, largely composed of skeletons of calcareous algae. A synonym of Lithothamnion ridge.
Industry:Natural environment
A specific region of an enzyme where a substrate binds and catalysis takes place.
Industry:Natural environment
