Property:Definition
From Coastal Wiki
This is a property of type Text. It links to pages that use the form MstConcept.
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A subzone of the sublittoral in which upward-facing rocks are dominated by erect algae, typically kelps; it can be further subdivided into the upper and lower infralittoral (based on Hiscock, 1985). The term is also used by Glémarec (1973) to refer to areas (étages) with a eurythermal environment of great seasonal and also daily and tidal amplitude. 1) lower The part of the infralittoral subzone which, on hard substrata, supports scattered kelp plants (a kelp park) or from which kelps are absent altogether and the seabed is dominated by foliose red and brown algae. It may be difficult to distinguish the lower infralittoralwhere grazing pressure prevents the establishment of foliose algae. 2) upper The part of the infralittoral subzone which, on hardsubstrata, is dominated by Laminariales forming a dense canopy, or kelp forest (based on Hiscock, 1985). +
Specialist - modified siphon to capture prey +
A symbiotic association in which one symbiont lives in close association with another, generally in the tube or burrow or actually within a body chamber of the host (Brusca, 1980). +
Liable to suffer minor damage, chips or cracks as result of physical impacts. +
Fertilization (gametes meet) within the body (or body cavity or accessory organ) of the individual +
Living within the system of cavities and channels formed by the spaces between grains in a sediment (interstitial space). +
Terms and definitions used in the World Register of Introduced Marine Species (WRIMS). +
Country or sea area that is recorded as the known introduced range of the species. +
Species whose presence is uncertain, maybe reported as present anecdotally but not confirmed. +
Species that are known to be invasive- those species in whose cases evidence of impact has been recorded or which is spreading aggressively. +
Terms used to describe 'Invasiveness' of species. +
A species whose 'invasiveness' has not been specified in its introduced range. The species is known to be present and has been reported but there is no comment on its invasiveness. +
Species whose invasiveness is uncertain. +
Gametes similar in size, shape and behaviour, not differentiated into male or female (Lincoln ''et al.'', 1998) +
Haploid and diploid phases morphologically identical +
1) Breeding several times per lifetime. 2) Organisms that have repeated reproductive cycles (Lincoln ''et al.'', 1998). +
J
Swimming is effected by contraction of the body or body cavity to produce a 'jet' of water, e.g. medusae and cephalopods (from Barnes ''et al.'', 2006) +
