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SPATIAL VARIATION PATTERNS IN THE MARINE MACROALGA XIPHOPHORA GLADIATA SSP. GLADIATA (PHAEOPHYTA). II. MORPHOLOGICAL VARIATION OVER LARGE SPATIAL SCALES 1
Author(s) -
Rice Ellen L.,
Kenchington Trevor J.
Publication year - 1990
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.0022-3646.1990.00522.x
Subject(s) - cline (biology) , biology , geographic variation , variation (astronomy) , spatial ecology , ecology , astrophysics , physics , population , demography , sociology
The geographic expression of inter‐regional morphological variation in Xiphophora gladiata ssp. gladiata was examined using a combination of discriminant function analyses, canonical correlation analysis and linear regression analysis. The pattern of that expression is an irregularly‐stepped cline over scales of hundreds of kilometers, superimposed on a weak complex of microclines driven by exposure and (perhaps) other locally‐varying environmental factors. The large‐scale irregular cline is probably a response to the physico‐chemical characteristics of regional water masses.