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A list of all pages that have property "Definition" with value "Species that are reported as present but only 'sometimes'". Since there have been only a few results, also nearby values are displayed.

Showing below up to 25 results starting with #1.

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List of results

  • Traits:Hydrostatic  + (Skeletal support provided by hydrostatic pressure from a fluid filled cavity (e.g. the coelum) surrounded by muscles. Hydrostatic pressure provides skeletal support in sea anemones, jellyfish, nematodes, annelids, echinoderms, and other groups.)
  • Traits:MixedCalcareousMaterial  + (Skeleton composed of a mixture of any of aragonite, calcite, high magnesium calcite or amorphous CaCO3)
  • Traits:CalcareousSkeleton  + (Skeleton composed of calcareous spicules (sponges/echinoderms), plates, spines, bones or other structures)
  • Traits:Filiform  + (Slender and thread-like (Kozloff, 1996).)
  • Traits:SmallTribePridePackPod  + (Small group of individuals that work together for mutual benefit, often held together by familial (matriarchal/patriarchal) bonds (e.g. a pack or wolves, a pod of dolphin, a pride of lions, a tribe of humans).)
  • Traits:Flaccid  + (Soft, limp, flabby (Brusca, 1980).)
  • Traits:Choanocytes  + (Special feeding cell of sponges)
  • Traits:Palps  + (Specialist - Protobranch molluscs)
  • Traits:GillRakers  + (Specialist - e.g. planktivorous fish such as basking shark)
  • Traits:Lophophore  + (Specialist - filter feeding organ e.g. brachiopods, phoronids, bryozoans)
  • Traits:PiercingToxic  + (Specialist - modified radula used to inject toxins, e.g. cone shells)
  • Traits:InhalentSiphon  + (Specialist - modified siphon to capture prey)
  • Traits:OralPodia  + (Specialist - modified tube feet in holothurians)
  • Traits:Radulae  + (Specialist - protrusile anterior region of digestive tract; refers to chitinized teeth along the radular membrane (Stachowitsch, 1992).)
  • Traits:AristolesLantern  + (Specialist - sea urchins)
  • Traits:FilerBasket  + (Specialist e.g. sea squirts)
  • Traits:Glochidium  + (Specialist larval form in some freshwater Specialist larval form in some freshwater bivalves, characterized by a bivalve shell, with or with a pair of hooks, and a long adhesive thread or tentacle. It lives as a temporary parasite on the gills or fins of fish. In some species a modified glochidium is termed a 'lasidium' before attachment and a 'haustorium' after attachment (Stachowitsch, 1992).um' after attachment (Stachowitsch, 1992).)
  • Traits:Detected in invasion pathway  + (Species detected in invasion pathways for example in ballast water, or as a hull-fouling organism.)
  • Traits:Management recorded  + (Species for which some management action including prevention has been recorded in its introduced range.)
  • Traits:TypeII  + (Species indifferent to enrichment, always present in low densities with non-significant variations with time (from initial state, to slight unbalance). These include suspension feeders, less selective carnivores and scavengers.)
  • Traits:Alien  + (Species introduced by man into places out of their natural range of distribution.)
  • Traits:Reported  + (Species that are 'reported' to be present but with no further information.)
  • Traits:Of concern  + (Species that are demonstrating aggressive spread and there is concern about its spread OR species where some concern has been recorded- this may be due to known records of its invasiveness and impacts in other areas of their known introduced range.)
  • Traits:Invasive  + (Species that are known to be invasive- those species in whose cases evidence of impact has been recorded or which is spreading aggressively.)
  • Traits:Present/controlled  + (Species that are known to be present in their introduced range and are subject to some control option.)
 (Species that are reported as present but only 'sometimes')
  • Traits:Sometimes present  + (Species that are reported as present but only 'sometimes'.)
  • Traits:MSFDIndicators  + (Species that comprise indicators or componSpecies that comprise indicators or components of indicators for the Marine Strategy Framework Directive (, with emphasis on Descriptors 1, 2, 3, 4 and 6. emphasis on Descriptors 1, 2, 3, 4 and 6.)
  • Traits:Not invasive  + (Species that has not demonstrated any invasive traits in its introduced range.)
  • Traits:Established and stable  + (Species that have become established in their introduced range but are not known to be spreading aggressively.)
  • Traits:Established and expanding  + (Species that have become established in their introduced range and are known to be increasing in abundance and expanding their range.)
  • Traits:Established  + (Species that have become established in their introduced range.)
  • Traits:Border Intercept  + (Species that have been intercepted at borders as a result of detection procedures.)
  • Traits:In captivity/cultivated  + (Species that have been introduced and maintained in captivity or cultivated for example those species that are farmed in aquaculture or mariculture facilities.)
  • Traits:Detected in the wild  + (Species that have been recorded as present in the wild with no further information.)
  • Traits:Eradication unconfirmed  + (Species that have been subject to an eradication event but have not been confirmed as eradicated.)
  • Traits:Eradicated  + (Species that have been subject to an eradication event and have been confirmed as eradicated.)
  • Traits:Recorded in error  + (Species that have reported or recorded in error.)
  • Traits:Native - Endemic  + (Species that is native and endemic to a country or sea area i.e. a species that is unique to a location or habitat.)
  • Traits:Native - Non-endemic  + (Species that is native to an area but is not endemic to it i.e. a species that has a wide native range.)
  • Traits:Native  + (Species that is native to the country or sea area.)
  • Traits:Extirpated  + (Species that were present but have been declared extinct.)
  • Traits:Absent  + (Species that were reported at some time to be present but were not recorded subsequently are reported to be ‘Absent’.)
  • Traits:TypeIII  + (Species tolerant to excess organic matter Species tolerant to excess organic matter enrichment. These species may occur under normal conditions, but their populations are stimulated by organic richment (slight unbalance situations). They are surface deposit-feeding species, as tubicolous spionids.t-feeding species, as tubicolous spionids.)
  • Traits:TypeI  + (Species very sensitive to organic enrichment and present under unpolluted conditions (initial state). They include the specialist carnivores and some deposit-feeding tubicolous polychaetes.)
  • Traits:Occurrence Not specified  + (Species which may be listed as alien or introduced but whose occurrence has not been specified.)
  • Traits:Origin uncertain  + (Species whose biological status is uncertain i.e. it is uncertain if the species is native or alien to the location.)
  • Traits:Invasiveness Uncertain  + (Species whose invasiveness is uncertain.)
  • Traits:Origin unknown  + (Species whose origins cannot be verified OR a species whose origin has not been specified in the source information.)
  • Traits:Introduction unverified  + (Species whose presence is uncertain, maybe reported as present anecdotally but not confirmed.)
  • Traits:Stacks  + (Stacks of indivudal cells/frustules (e.g. in diatoms), like a pack of cards.)