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A list of all pages that have property "Definition" with value "0.5-<3 psu". Since there have been only a few results, also nearby values are displayed.

Showing below up to 95 results starting with #1.

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List of results

    • Traits:BrackishSalinity  + (0.5-<30 psu)
    • Traits:Oligohaline  + (0.5-<5 psu (included under MNCR Low, <18 psu))
    • Traits:ModeratelyStrong  + (1 to 3 knots (0.5-1.5 m/sec.))
    • Traits:Rockpools  + (1) A pool of water among rocks left behind by the ebbing tide. 2) a depression in the littoral zone of a rocky seashore where, at low tide, seawater is left behind (Hiscock, 1996).)
    • Traits:Iteroparous  + (1) Breeding several times per lifetime. 2) Organisms that have repeated reproductive cycles (Lincoln ''et al.'', 1998).)
    • Traits:Exposed  + (1) Coasts which face the prevailing wind b1) Coasts which face the prevailing wind but which have a degree of shelter because of extensive shallow areas offshore, offshore obstructions, or a restricted (less than 90°) window to open water. These sites are not generally exposed to large waves or regular swell. 2) Open coasts facing away from prevailing winds but with a long fetch, and where strong winds are frequent.etch, and where strong winds are frequent.)
    • Traits:ForkLength  + (1) Length of a fish measured from the tip 1) Length of a fish measured from the tip of the snout to the posterior end of the middle caudal rays. This measurement is used instead of standard length for fishes on which it is difficult to ascertain the end of the vertebral column, and instead of total length in fish with stiff, forked tail, e.g., tuna. Mostly used in fishery biology and not in systematics. (FishBase)</br></br>2) Fork length (FL) refers to the length of a fish measured from the tip of the snout to the end of the middle caudal fin rays and is used in fishes in which it is difficult to tell where the vertebral column ends. (Wikipedia)</br></br>3) Fork length (FL) can be specified as:<ul><li>Maximum length: Size (in cm) of the largest male/unsexed or female specimen ever caught. (FishBase)<li>Common length: Size (in cm) at which male/unsexed or female specimen(s) are commonly caught or marketed. (FishBase)</ul>specimen(s) are commonly caught or marketed. (FishBase)</ul>)
    • Traits:VeryExposed  + (1) Open coasts which face into prevailing 1) Open coasts which face into prevailing winds and which receive wind-driven waves and oceanic swell without any offshore obstructions for several hundred kilometres, but where deep water is not close to the shore (50 m depth contour further than about 300 m). 2) Open coasts adjacent to extremely exposed sites but which face away from prevailing winds.but which face away from prevailing winds.)
    • Traits:Sand  + (1) Particle size 0.063 -4 mm (Hiscock 1996) 2) >90% sand (Long, 2006))
    • Traits:CoarseCleanSand  + (1) Particle size 0.5 - 4 mm (Hiscock, 1996))
    • Traits:GravelShingle  + (1) Particle size 4 -16 mm. 2) Clean stone or shell gravel including dead maerl (Hiscock, 1996) 3) >80% gravel (Long, 2006).)
    • Traits:Mud  + (1) Particle size <0.063 mm (silt / clay fraction) (Hiscock, 1996) 2) >90% mud (Long, 2006))
    • Traits:Viviparous  + (1) Producing live offspring from within the body of the parent (Lincoln ''et al.'', 1998). 2) Development of an embryo within the body of the parent, in part, resources passing directly from parent to embryo (Barnes ''et al.'', 2006).)
    • Traits:SexualReproduction  + (1) Reproduction involving the regular alte1) Reproduction involving the regular alternation of gamete formation by meiosis, and gamete fusion (karyogamy) to form a zygote (Lincoln ''et al.'',1998). 2) Reproduction where recombination of genetic material, derived from more than one parent is possible (Barnes ''et al''. 2006), true amphimixis involves random segregation of genes and random association of parental contribution (gametes).iation of parental contribution (gametes).)
    • Traits:Clay  + (1) Sediment particles less than 0.004 mm in size (Wentworth, 1922). 2) A soft very fine-grained sedimentary rock composed primarily of clay-sized particles (Hiscock, 1996).)
    • Traits:TotalLength  + (1) The greatest length of the whole body b1) The greatest length of the whole body between the most anterior point of the body and the most posterior point, in a straight line, not over the curve of the body. Sometimes, when there are two equal lobes, the caudal rays are squeezed together and their tip is taken as the most posterior point (excluding the caudal filaments), or the longest lobe is squeezed to the midline (maximum length or extreme tip length). Also an imaginary line may be drawn between the two lobe tips and length to its mid-point taken as the most posterior point (total auxiliary length or bilobular length). Usually the tip of the most posterior lobe of the fin in normal position is taken as the posteriormost point (total normal length or natural tip length). Total length is used by taxonomists in Myxini, Petromyzontiformes, usually in Elasmobranchii and sometimes in other fishes. Standard length is usually employed with Teleostei. Abbreviated TL. (FishBase)</br></br></br>2) Total length (TL) refers to the length of a fish measured from the tip of the snout to the tip of the longer lobe of the caudal fin, usually measured with the lobes compressed along the midline. It is a straight-line measure, not measured over the curve of the body. (Wikipedia)</br></br>Total length measurements are used in slot limit and minimum landing size regulations. (Wikipedia)</br></br>3) Total length (TL) can be specified as:<ul><li>Maximum length: Size (in cm) of the largest male/unsexed or female specimen ever caught. (FishBase)<li>Common length: Size (in cm) at which male/unsexed or female specimen(s) are commonly caught or marketed. (FishBase)</ul>specimen(s) are commonly caught or marketed. (FishBase)</ul>)
    • Traits:Supralittoral  + (1) The lower terrestrial zone, characteris1) The lower terrestrial zone, characteristically dominated by orange and white-to-grey lichens on hard substrata with scattered salt-tolerant higher plants and mosses (Hiscock, 1996). 2) The region of the shore directly above the highest water level and subject to wetting by spray or wave splash (Lincoln ''et al.'', 1998).or wave splash (Lincoln ''et al.'', 1998).)
    • Traits:StandardLength  + (1) The measurement from the most anterior 1) The measurement from the most anterior tip of the body to the midlateral posterior edge of the hypural plate (in fish with a hypural plate) or to the posterior end of the vertebral column (in fish lacking hypural plates). It may be restricted to the tip of the snout if the lower jaw projects. The base of the caudal fin (end of the vertebral column or posterior edge of the hypural plate) is determined by flexing the tail up while the caudal peduncle is held down. The resultant wrinkle or caudal flexure indicates the caudal base. It may also be determined by probing or dissection. Sometimes the posteriormost point is the last scale, the last pored scale or the beginning of the caudal fin rays. It is the usual scientific measurement for length of a fish except in Myxini, Petromyzontiformes, Elasmobranchii and Holocephali. This measurement is used because long-preserved fish often lose the tips of the caudal fin rays through breakage after the desiccation effect of alcohol. See total length and fork length. In Holocephali the length is usually taken from the tip of the snout to the origin of the upper caudal fin because the caudal filament breaks off frequently. In Scaridae it is taken back to the rear margin of the second to last lateral line scale, because the large scales obscure the point of caudal flexure. In small dead fish, the end point is detected by bending the caudal fin to one side. In fishery work, as a result of the use of the measuring board, standard-, fork- and total length are taken from the most anterior part of the head. Abbreviated as SL. (FishBase)</br></br>2) Standard length (SL) refers to the length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate. Simply put, this measurement excludes the length of the caudal fin. (Wikipedia)</br></br>Standard length measurements are used with Teleostei (most bony fish), while total length measurements are used with Myxini (hagfish), Petromyzontiformes (lampreys), and (usually) Elasmobranchii (sharks and rays), as well as some other fishes. (Wikipedia)</br></br>3) Standard length (SL) can be specified as: a) Maximum length: Size (in cm) of the largest male/unsexed or female specimen ever caught. (FishBase); b) Common length: Size (in cm) at which male/unsexed or female specimen(s) are commonly caught or marketed. (FishBase).e commonly caught or marketed. (FishBase).)
    • Traits:Eulittoral  + (1) The region between the highest and lowest extent of the tide on the shore. 2) The shore zone between the lowest and highest seasonal water level in a lake (Lincoln ''et al.'', 1998))
    • Traits:Sublittoral  + (1) The zone exposed to air only at its upp1) The zone exposed to air only at its upper limit by the lowest spring tides, although almost continuous wave action on extremely exposed coasts may extend the upper limit high into the intertidal region. The sublittoral extends from the upper limit of the large kelps and includes, for practical purposes in nearshore areas, all depths below the littoral. Various sub-zones are recognized (based on Hiscock, 1985). 2) The marine zone extending from the lowest limit of the intertidal to the outer edge of the continental slope (rephrased from Lincoln ''et al.'', 1998).(rephrased from Lincoln ''et al.'', 1998).)
    • Traits:AlphaMesohaline  + (10-<18 psu)
    • Traits:Pebbles  + (16-64 mm. May be rounded or flat. Substrata which are predominantly pebbles.)
    • Traits:BetaPolyhaline  + (18-<25 psu)
    • Traits:Polyhaline  + (18-<30 psu (included under MNCR Reduced, 18-30 psu))
    • Traits:BirdsDirectiveAnnex1  + (194 species and sub-species are particularly threatened. Member States must designate Special Protection Areas (SPAs) for their survival and all migratory bird species.)
    • Traits:AlphaPolyhaline  + (25-<30 psu)
    • Traits:SmallBoulders  + (256 -512 mm; may be unstable.)
    • Traits:Strong  + (3 to 6 knots (1.5-3 m/sec.))
    • Traits:AlphaOligohaline  + (3-<5 psu)
    • Traits:SandyGravel  + (30 -80% gravel with sand (see Long, 2006).)
    • Traits:BetaHaline  + (30-36 psu)
    • Traits:MarineSalinity  + (30-40 psu (equals MNCR Full))
    • Traits:AlphaHaline  + (36-40 psu)
    • Traits:BetaMesohaline  + (5-<10 psu)
    • Traits:Mesohaline  + (5-<18 psu (equals MNCR Low, <18 psu))
    • Traits:Cobbles  + (64-256 mm. May be rounded or flat. Substrata that are predominantly cobbles.)
    • Traits:BirdsDirectiveAnnex2  + (82 bird species can be hunted. However, the hunting periods are limited and hunting is forbidden when birds are at their most vulnerable: during their return migration to nesting areas, reproduction and the raising of their chicks.)
    • Traits:FreshwaterSalinity  + (<0.5 psu)
    • Traits:Weak  + (<1 knot (<0.5 m/sec))
    • Traits:HyperSaline  + (>40 psu)
    • Traits:LargeBoulders  + (>512 mm; likely to be stable (Hiscock, 1996).)
    • Traits:VeryStrong  + (>6 knots (>3 m/sec))
    • Traits:ExternalTube  + (A built-structure inhabited by an organismA built-structure inhabited by an organism and essential to its survival, but not part of its body, composed of hardened (either rigid or flexible) secretions, with or without the addition of embedded particles, with those particles either selectively collected from the environment or passively becoming glued during formation (pers. comm. Read, G.).d during formation (pers. comm. Read, G.).)
    • Traits:Planula  + (A ciliated, free swimming larva; lacks a mouth but in older stages may include a gastrovascular cavity (Stachowitsch, 1992))
    • Traits:Protandrous  + (A condition of hermaphroditism in plants and animals where male gametes mature and are shed before female gametes mature (Holmes, 1979).)
    • Traits:Protogynous  + (A condition of hermaphroditism in plants and animals where female gametes mature and are shed before male gametes mature (Holmes 1979).)
    • Traits:Mat  + (A dense mass which blankets the substratum.)
    • Traits:Forest  + (A dense stand of large plants in which the upper branches (trees) or laminae (macroalgae) overlap to form a canopy that shades the under story of flora and fauna.)
    • Traits:FeedingMethodBehaviour  + (A description of how the oganism gathers food, and from where)
    • Traits:LarvalSttlementSubstratum  + (A description of the preferred substratum for larval settlement)
    • Traits:ReproductiveSeason  + (A description of the season(s) or months of the year during which reproduction occurs)
    • Traits:VerticalBiologicalZone  + (A description of the vertical biological zone or zonation in which an organism resides. The zone is determined by depth, physical, chemical and biological factors.)
    • Traits:Saltmarsh  + (A flat, poorly drained coastal swamp inundated by most high tides (Lincoln ''et al.'', 1998).)
    • Traits:Budding  + (A form of asexual multiplication in which A form of asexual multiplication in which a new individual begins life as an outgrowth from the body of the parent. It may then separate to lead an independent existence or remain connected or otherwise associated to form a colonial organism (Barnes ''et al.'', 1993).lonial organism (Barnes ''et al.'', 1993).)
    • Traits:Fission  + (A form of asexual multiplication involving division of the body into two or more parts each or all of which can grow into new individuals (Barnes ''et al.'', 1993).)
    • Traits:Veliger  + (A free-swimming molluscan larva, characterized by lobed extensions of the peroral trochus (velum), larval shell and rudimentary foot (Stachowitsch, 1992).)
    • Traits:AscidianTadpole  + (A free-swimming tadpole-like larva of ascidians, characterized by a head (bearing internal organs and adhesive papilla) and tail (with notochord and neural tube) (Stachowitsch, 1992).)
    • Traits:HabitatModification  + (A general term to describe how the organism lives in or interacts with its habitat (adapted from BIOTIC, Bolam ''et al.'', 2013).)
    • Traits:Cave  + (A hollow normally eroded in a cliff (or vertical rock) with the penetration being greater than the width of the entrance (Hiscock, 1996).)
    • Traits:Pediveliger  + (A late veliger that is able to use its foot to crawl and provide temporary attachment)
    • Traits:Rataria  + (A later larval stage in siphonophores, composed of a floating colony with a disc-shaped float, and an elongated body surrounded by the rim of the growing disc (Stachowitsch, 1992))
    • Traits:Diplontic  + (A life cycle characterized by a diploid adult stage producing haploid gametes by meiosis, the zygote forming by fusion of a pair of gametes (Lincoln ''et al.'', 1998).)
    • Traits:Haplontic  + (A life cycle in which meiosis occurs in the zygote to produce the haploid phase but in which only the zygote is diploid (Lincoln ''et al.'', 1998).)
    • Traits:Strandline  + (A line on the shore composing debris deposited by a receding tide; commonly used to denote the line of debris at the level of extreme high water (Lincoln ''et al.'', 1998).)
    • Traits:EnclosedCoast  + (A marine inlet or harbour fully enclosed from the open sea except at the entrance, not normally open to the sea at two ends. The connection with the open sea is normally less restricted than is the case with lagoons (Hiscock, 1996).)
    • Traits:Cushion  + (A mass or pillow of soft material.)
    • Traits:Elevation  + (A measure of height above chart datum, recorded in metres)
    • Traits:BodySize  + (A measurement of the size of the organism.A measurement of the size of the organism. Note - the measurement used to express body size varies within taxonomic groups. For example, some disciplines measure diameter, others carapace length, total body length or wing span. Also body size can vary with gender and life stage. size can vary with gender and life stage.)
    • Traits:Width  + (A measurement or extent of something from side to side; the lesser of two or the least of three dimensions of a body (OED) Note: For width you can specify the measurement type (minimum, maximum, average), gender (male, female) and life stage.)
    • Traits:CrevicesFissures  + (A narrow crack in hard substratum where penetration is deeper than the width at the entrance; a crevice is <10 mm wide at the entrance, while a fissure is >10 mm (Hiscock ,1996))
    • Traits:Epifloral  + (A plant living on the surface of the substratum.)
    • Traits:Endophytic  + (A plant living within another plant (Lincoln ''et al.'', 1998))
    • Traits:Nectochaeta  + (A polychaete larval stage where the first set of chaetal bundles and parapodia develop, although the ciliary girdle remains for swimming (see Stachowitsch, 1992).)
    • Traits:Parenchymella  + (A poriferan larva composed of a ciliated ball of cells (blastula), with a brief swimming phase (Ruppert & Barnes, 1994).)
    • Traits:Amphiblastula  + (A poriferan larva, composed of a hollow ball of cells, with one hemisphere ciliated (Ruppert & Barnes, 1994).)
    • Traits:Fragility  + (A qualitative estimate of the susceptibility of a species to physical damage.)
    • Traits:Exoskeleton  + (A rigid external structure that supports and/or protects the body of an organism and that is mainly completely secreted by the epidermis (derived from Lawrence 2005).)
    • Traits:SimpleAxialProboscis  + (A sac-like proboscis relying on fluid presA sac-like proboscis relying on fluid pressure from the coelom for eversion. There is no particular development of musculature or glands. The worms tend to have reduced septa in the anterior part of the body allowing the contruction of the posterior part of the body to exert considerable force on the proboscis because of the free movement of the coelomic contents. Muscles associated with a thickened first septum (gular membrane) and the proboscis are used for retraction.and the proboscis are used for retraction.)
    • Traits:SeasonalFeeding  + (A seasonal migration for the purpose of following food or moving to suitable feeding grounds)
    • Traits:SeasonalEnvironment  + (A seasonal migration in order to remain within suitable environmental conditions.)
    • Traits:SeasonalReproduction  + (A seasonal migration in order to reproduce.)
    • Traits:Tentacles  + (A slender, flexible limb or appendage in an animal, especially around the mouth of an invertebrate, used for grasping or moving about, or bearing sense organs (OED).)
    • Traits:SpecialisedStage  + (A specialised dormancy or diapause stage in the life cycle of the organism)
    • Traits:Fluctuating  + (A species which exhibits fluctuating densities (either undefined in the literature or otherwise not mentioned in the abundance terms/parameters described here).)
    • Traits:Monoculture  + (A species which exists to the exclusion of all other species including dense mats or in 100% of survey counts.)
    • Traits:Rare to dominant  + (A species which is fluctuates between relatively low to high densities (accounts for such phenomena as population explosions).)
    • Traits:Rare to common  + (A species which is found in relatively low to moderate densities (accounts for non-discrete nature of abundance terms/parameters described here).)
    • Traits:Common to dominant  + (A species which is found in relatively moderate to high densities (accounts for non-discrete nature of abundance terms/parameters described here).)
    • Traits:Locally common  + (A species which is observed to have a patchy distribution in terms of being common only at some locations.)
    • Traits:Rare  + (A species which is present at low or relatively low densities; used to describe single occurrences of the species where appropriate.)
    • Traits:Dominant  + (A species which is very abundant or present at high densities or relatively high densities.)
    • Traits:Invasiveness Not specified  + (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.)
    • Traits:Common  + (A species with is abundant or present at moderate or relatively moderate densities.)
    • Traits:Sphere  + (A sphere or globe)