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Ecological Aspects of the Distributions of Fishes at Fanning Island

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Title:Ecological Aspects of the Distributions of Fishes at Fanning Island
Authors:Chave, E.H.
Eckert, D.B.
Date Issued:Jul 1974
Publisher:University of Hawai'i Press
Citation:Chave EH, Eckert DB. 1974. Ecological aspects of the distributions of fishes at Fanning Island. Pac Sci 28(3): 297-317.
Abstract:The nearshore marine environment of Fanning Island (30 55' N,
159 23' W) was subjectively partitioned into seven habitats which are briefly
described. Efforts were made to sample in each in order to obtain as complete as
possible a record of the fish species present. Observations were made underwater
by skin and SCUBA diving during July-August 1972, and April 1973; 214 species
of fishes (96 genera in 37 families) were seen. Tables provide semiquantitative
abundance estimates for each species in every habitat, and a list of characteristic
species associated with various substrates within the habitats. Semiquantitative
abundance estimates were used to generate diversity estimates and two measures of
faunal resemblance for the habitats taken two at a time. Relationships between the
faunas of the different habitats were used to generate hypotheses about ecological
relationships between habitats. It is argued that strong surge and tidal currents
strongly influence the distributions of Fanning Island fishes, separating outer reef
fishes from lagoon fishes by a rich zone associated with the English Harbor channel.
Our observations include the addition of 57 species to the Line Islands fish fauna.
Their zoogeographical affinities support an earlier determination of a central
Pacific character for the Line Islands fishes.
Appears in Collections: Pacific Science Volume 28, Number 3, 1974

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