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Anchor Species and Epiphytes in intertidal Algal Turf

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Title: Anchor Species and Epiphytes in intertidal Algal Turf
Authors: Stewart, Joan G.
Issue Date: Jan 1982
Publisher: University of Hawai’i Press
Citation: Stewart JG. 1982. Anchor species and epiphytes in intertidal algal turf. Pac Sci 36(1): 45-59.
Abstract: This study characterizes a turflike vegetation composed of benthic
marine algae, in the low intertidal in southern California, by means of
quantitative relative abundance data collected over a 2-yr period. The algae
comprise a relatively homogeneous assemblage that is fastened to the substrate
by one to six "anchor" taxa with thalli that persist throughout the year and
become reestablished on exposed surfaces within several months. Two species of
Corallina together occupy more than 60 percent of the total substrate sampled.
Epiphytes attached to these anchor species include 42 species that are consistently
found and another 25 that are infrequently or incidentally recorded.
Abundances of several of the epiphytes fluctuated during the sampling period,
but the number of species present showed no distinct seasonal change. In the
northern GulfofCalifornia a similar-appearing turf includes several of the same
species in different proportions, but anchor species are different. Many unrelated
taxa in both turfs exhibit the same morphological characters. A census of
macroinvertebrates associated with the southern California vegetation suggests
that grazing is not important in maintaining the relatively uniform height of these plants.
ISSN: 0030-8870
Appears in Collections:Pacific Science Volume 36, Number 1, 1982

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