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Protist Diversity and Geographical Distribution (Paperback, 2009 ed.)
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Protist Diversity and Geographical Distribution (Paperback, 2009 ed.)
Series: Topics in Biodiversity and Conservation, 8
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Conservation and biodiversity of protists The conservation of
biodiversity is not just an issue of plants and vertebrates. It is
the scarcely visible invertebrates and myriads of other microscopic
organisms that are crucial to the maintenance of ecological
processes on which all larger organisms and the composition of the
atmosphere ultimately depend. Biodiversity and Conservation
endeavours to take an holistic view of biodiversity, and when the
opportunity arises to issue collections of papers dealing with
too-often neglected groups of organisms. The protists, essentially
eukaryotes that cannot be classi?ed in the kingdoms of animals,
fungi, or plants, include some of the lea- known groups of
organisms on earth. They are generally treated as a separate
kingdom, commonly named Protista (or Protoctista) in textbooks, but
in reality they are a mixture of organisms with disparate a?nities.
Some authors have hypothesized that the numbers of protists are not
especially large, and that many have extraordinarily wide
distributions. However, the p- ture that unfolds from the latest
studies discussed in this issue is di?erent. There are many species
with wide ranges, and proportionately more cosmopolitan species
than in macroorganism groups, as a result of their long
evolutionary histories, but there are also de?nite patterns and
geographical restrictions to be found. Further, some protists are
linked to host organisms as mutualists or parasites and necessarily
con?ned to the distributions of their hosts.
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