Property:Definition
From Coastal Wiki
This is a property of type Text. It links to pages that use the form MstConcept.
C
Free-swimming spherical larva, composed of a simple gastrovascular system and short comb-rows; resembles typical adult ctenophore (see Stachowitsch, 1992, Ruppert & Barnes, 1994). +
With straight sides and a circular section (Thompson, 1995). +
Free-swimming bryozoan larva, the body is triangular, compressed and enclosed in a bivalve shell (see Ruppert & Barnes, 1994). +
Final lecithotrophic larval stage, characterized by bivalved carapace, compound eyes, prehensile antennules and thoraic appendages (cirri) (see Stachowitsch, 1992). +
D
Where the species degrades marine infrastructures or archaeological sites. +
A taxon is Data Deficient when there is inadequate information to make a direct, or indirect, assessment of its risk of extinction based on its distribution and/or population status. A taxon in this category may be well studied, and its biology well known, but appropriate data on abundance and/or distribution are lacking. Data Deficient is therefore not a category of threat. Listing of taxa in this category indicates that more information is required and acknowledges the possibility that future research will show that threatened classification is appropriate. It is important to make positive use of whatever data are available. In many cases great care should be exercised in choosing between DD and a threatened status. If the range of a taxon is suspected to be relatively circumscribed, and a considerable period of time has elapsed since the last record of the taxon, threatened status may well be justified. +
Min Value +
Where floating rafts of man-made materials become vectors for an invasive species. +
Living at or near the bottom of a sea or lake but having the capacity for active swimming (from Lincoln ''et al.'', 1998). +
Description of an organism's relationship with other organisms +
An organism that feeds on fragmented particulate organic matter within or on the substratum (adapted from Lincoln ''et al.'', 1998). +
Maximum to minimum recorded depth (expressed as metres below chart datum). +
The depth within the substratum at which the organism is found (max recorded in metres). +
Species detected in invasion pathways for example in ballast water, or as a hull-fouling organism. +
Species that have been recorded as present in the wild with no further information. +
