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STUDIES ON THE BIOGEOGRAPHY AND ECOLOGY OF THE FRESHWATER PHAEOPHYCEAN ALGA HERIBAUDIELLA FLUVIATILIS 1
Author(s) -
Wehr John D.,
Stein Janet R.
Publication year - 1985
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.0022-3646.1985.00081.x
Subject(s) - biogeography , ecology , biology , range (aeronautics) , streams , flora (microbiology) , sampling (signal processing) , paleontology , computer network , materials science , filter (signal processing) , computer science , bacteria , composite material , computer vision
ABSTRACT A biogeographical survey of the freshwater brown alga Heribaudiella fluviatilis (Areschoug) Svedelius was conducted in southern British Columbia (Canada) and northern Washington (U.S.A.). Surveys of 121 reaches on streams and rivers revealed 25 populations, including the first record for the U.S.A. A strongly noncoastal distribution provides no evidence of a marine‐based source for its distribution in the region. Streams with Heribaudiella typically have a: current velocity greater than 1.0 m · s −1 ; rocky substrata; range of width from 1.7–60 m; broad range of Ca concentration; and, ranged from heavily shaded to fully open location. Although once thought rare in North America, it was fairly widespread in the region and often abundant within a given sampling site. Biogeographic and ecological data suggest that Heribaudiella may be a common, but often overlooked, component of the flora of rivers.