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Distribution, Morphology, And Genetic Affinities Of Dwarf Embedded Fucus Populations From The Northwest Atlantic Ocean, Arthur C. Mathieson, Clinton J. Dawes, Aaron L. Wallace, Anita S. Klein
Distribution, Morphology, And Genetic Affinities Of Dwarf Embedded Fucus Populations From The Northwest Atlantic Ocean, Arthur C. Mathieson, Clinton J. Dawes, Aaron L. Wallace, Anita S. Klein
New Hampshire Agricultural Experiment Station Publications
Dwarf embedded Fucus populations in the Northwest Atlantic Ocean are restricted to the upper intertidal zone in sandy salt marsh environments; they lack holdfasts and are from attached parental populations of F. spiralis or F. spiralis x F. vesiculosus hybrids after breakage and entanglement with halophytic marsh grasses. Dwarf forms are dichotomously branched, flat, and have a mean overall length and width of 20.3 and 1.3 mm, respectively. Thus, they are longer than Irish (mean 9.3 mm) and Alaskan (mean 15.0 mm) populations identified as F cottonii. Reciprocal transplants of different Fucus taxa in a Maine salt marsh confirm that …