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Vai kāds lūdzu varētu pateikt vai tiešam invazīvās sugas iedalās invazīvajas svešzemju un izvazīvajās vietējās sugās kā teikts vikipedijā?un ja tā ir tad, vai piemēram bebrs būtu pieskaitāms pie invazīvās vietējās sugas?
23, 2009, 18:51kazha
:-:

    «Oxford Reference Online Premium Collection» šāds vārdu savirknējums nav atrodams. Toties tur ir sekojoši skaidrojumi:

    invasive species
    An aggressive introduced species which spreads and dominates its new location, competing with and often replacing native species and proving difficult to remove. Also known as invader . See also introduced species.

    introduced species
    A species that has been brought into an area where it does not naturally occur, outside its known historic range , usually by humans, and which is able to survive and reproduce. Also known as alien, exotic species, or non‐native species.

    native species
    A species that is within its known natural range , and occurs naturally in a given area or habitat, as opposed to an introduced species or invasive species . Also known as endemic species, indigenous species . Contrast non‐native species.

    (A Dictionary of Environment and Conservation. Chris Park. Oxford University Press, 2007.)

    Īsumā – invazīvā suga ir ievazāta suga, kas sākusi pati izplatīties. Nevar vienlaikus būt invazīva un vietēja suga.

    24, 2009, 0:24Zirneklītis
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