Community structure of endemic Mimosa species and environmental heterogeneity in a semi-arid Mexican valley
2002; Wiley; Volume: 13; Issue: 5 Linguagem: Inglês
10.1658/1100-9233(2002)013[0697
ISSN1654-1103
AutoresSara Lucı́a Camargo-Ricalde, Shivcharn S. Dhillion, Rosaura Grether,
Tópico(s)Plant Taxonomy and Phylogenetics
ResumoAbstract In this paper we analyse six communities with seven Mimosa species in the Tehuacan-Cuicatlan valley, Mexico. All species are endemic to Mexico and four are endemic to the valley. Mimosa species are found in (1) the ‘matorral xerofilo’ (arid tropical scrub): Mimosa calcicola, M. lacerata, M. luisana, M. polyantha and M. purpusii, and (2) the ‘selva baja caducifolia’ (tropical deciduous forest): M. adenantheroides, Mimosa texana var. filipes. Most of them occur in similar soil environments, while M. polyantha and M. calcicola establish in particular soil conditions and only M. luisana establishes in two different sites showing a wider range of adaptation to soil characteristics. The communities studied include 24 plant families, 51 genera and ca. 70 species (5% of the total flora estimated in the valley). Heterogeneity was found among the communities. Our results point to the replacement of ‘matorral xerofilo’ and ‘selva baja caducifolia’ by ‘matorral espinoso’ (thorny scrub). Thorny species (e.g. ...
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