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(Article of periodic en Anglais - 1983)

Document title

Relationship between form, function, and distribution of two Arctostaphylos species (Ericaceae) and their putative hybrids

Authors(s) and Affiliation(s)

BALL C. T. ; KEELEY J. ; MOONEY H. ; SEEMANN J. ; WINNER W. ;

Abstract

Plants of Arctostaphylos viscida occur in xeric, low elevation habitats in the Sierra Nevada. A. patula occurs in more mesic, high elevation sites. Where the distributions of these two species overlap, putative hybrids are formed. At a site of co-occurrence of these species we analyzed vegetative characters, reproductive characters, water relations, energy balances, and microhabitat quality for each of 81 Arctostaphylos plants which were randomly selected across a local environmental gradient. These plants represented not only an apparent genetic cline but also a cline of xerophytism. The plants with mesic characteristics were excluded from xeric habitats but those with xeric features were found to be relatively insensitive to microhabitat aridity.

Source

Article of periodic

published at : Acta oecologica. Série Oecologia plantarum Montreuil

Editor :

Millesime : 1983, vol. 4, no2 [pp. 153-164]

Bibliographic references : 18 réf.

Language

Anglais

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