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Dictyostelid Cellular Slime Molds from Hawai'i

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Title: Dictyostelid Cellular Slime Molds from Hawai'i
Authors: Landolt, John C.
Wong, George J.
Issue Date: Jan 1998
Publisher: University of Hawaii Press
Citation: Landolt JC, Wong GJ. 1998. Dictyostelid cellular slime molds from Hawai'i. Pac Sci 52(1): 98-103.
Abstract: Soil and litter samples, collected from Hawai'i on the islands of
Hawai'i, O'ahu, and Kaua'i, were examined for occurrence and distribution of
dictyostelid cellular slime molds. In total, 194 samples, from 20 different sites
and representing several plant communities, were collected during June 1995
and processed in the laboratory soon thereafter. A total of 10 species and one
variety was recovered, seven of which have not been reported previously from
Hawai'i. The greatest species richness (seven) and highest densities (up to 63
clones per gram of fresh soil/litter) were found on the island of Hawai'i, with
lower values obtained for sites on O'ahu and Kaua'i. It was rare for dietyostelids
to be recovered from more than 30% of the samples collected at any
given site. A number of sites were characterized by recovery of a single species,
and at least one site on each island sampled was devoid of recoverable dictyostelids.
Overall, dictyostelid densities were quite low compared with those at
other locations in subtropical and temperate regions of the Northern Hemisphere,
and the values for species richness are lower than those reported for
most neotropical mainland locations. These observations suggest a rather
modest dictyostelid community in Hawai'i, at least during the relatively dry
period when sampling was carried out. Lack of a windborne dispersal mechanism
may be responsible for the limited distribution of dictyostelids in Hawai'i
and possibly other island groups that are remote from continental land masses.
ISSN: 0030-8870
Appears in Collections:Pacific Science Volume 52, Number 1, 1998

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