Plectonema
Plectonema A genus of filamentous cyanobacteria (section III) which can carry out nitrogen fixation. They are often difficult to distinguish from Lyngbya and Phormidium (the LPP group). They are found in aquatic environments and on soil. Species growing on soil help to bind together soil particles and prevent erosion.
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species group Sibling Species , sibling species Species that are identical in outward appearance or very nearly so. Despite the similarity, however, they qualify as species by being… Centrifugal Speciation , centrifugal speciation The principle that new species are likely to arise towards the centre of the range of the present species, rather than at the… Fugitive Species , fugitive species (opportunist species) A species typical of unstable or periodically extreme environments, e.g. deserts or ephemeral ponds, and chara… Indifferent Species , indifferent species A species with no real affinity for any particular community, but which is not rare (as an accidental species would be). It is fi… Species , The term species, in the most general sense, refers to the various kinds of living things. Thus, species are generally recognized as distinct, fully…
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Plectonema