GardenWeb Glossary of Botanical Terms
Search results for: species
Number of matches: 12
- species (abr. sp., pl. spp.)
- A fundamental category of taxonomic classification that ranks below a genus and above subspecies; a population or series of populations whose individuals have the potential to freely breed with one another and that is discontinuous in variation from other populations or series of populations. The plural abreviation "spp." is usually used to refer to all the individual species within a genus, e.g., Cornus spp. refers to all the plants within the dogwood genus.
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- species diversity
- Almost the same as species richness, but in more technical literature, an ecosystem that is said to be more diverse if the species present have equal population sizes and less diverse if many species are rare and some are very common.
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- species richness
- The number of species within a region. See also: species diversity.
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- adventitious species
- An alien or exotic species; an invasive species.
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- aggregate species
- A group of species that are so closely related that they are regarded as a single species.
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- buffer species
- A plant or animal which may serve as an alternate food supply for a consumer animal, lessening the demand for a more desirable food species.
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- casual species
- Species which occur rarely in a community, such as a lilac, Syringa, but does not naturalize young plants in the area.
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- differential species (alt. differentiating species)
- A species with high fidelity to a particular community that can be used to distinguish vegetation units.
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- dominant species
- A species that exhibits ecologic dominance or social dominance over adjacent ones. See also: secondary species.
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- exotic species (syn. alien species)
- A species that is not native to a particular geographic location, but may have become naturalized there.
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- population density (syn. species density)
- The concentration of individuals in relation to the space they occupy; how close individuals occur. See also: abundance, cover.
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- secondary species
- The species subordinate to the dominant species, like dogwood, Cornus, in an oak, Quercus, forest.
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- This is version: 2.1 Last updated: February 4, 2002.
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