Plant community attributes of a tropical dry forest physiognomically dominated by Heteroflorum sclerocarpum (Fabaceae)
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Published:2022-11-11
Issue:1
Volume:101
Page:57-75
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ISSN:2007-4476
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Container-title:Botanical Sciences
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language:
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Short-container-title:Bot. Sci.
Author:
Ibarra-Manriquez GuillermoORCID, Urrea-Galeano Lina AdonayORCID, Cortés-Flores JorgeORCID, Hernández-Esquivel Karen BeatrizORCID, Navarrete-Segueda ArmandoORCID, Ek-Rodríguez Iván LeonardoORCID
Abstract
Background: Heteroflorum (Fabaceae) is a monospecific genus endemic to western Mexico. Community attributes of the forest where H. sclerocarpum is found are scarcely known, as well as its similarity with other tropical seasonal forests.
Question: What is the composition, structure, and diversity of the tropical deciduous forest where H. sclerocarpum is physiognomically dominant?
Study site and date: The study was carried out in the buffer area of the Zicuirán-Infiernillo Biosphere Reserve, in the Churumuco municipality of Michoacán, Mexico (2014).
Methods: In three 0.1-ha sites, we sampled trees with a diameter at breast height ≥ 1 cm and lianas whose rooted stem had a diameter of ≥ 1 cm. We calculated the density, biomass, rank-abundance, rank-basal area curves, and alpha and beta diversity measures for each site.
Results: We recorded 64 species from 21 families in 0.3 ha. Fabaceae had the highest number of genera, species, individuals, and biomass in all sites sampled. The sites varied in richness (33-41 species), density (176-247 individuals), basal area (2-2.9 m2), and maximum height of trees (12-16 m). Rank-abundance curves differed significantly. Rarefaction curves showed that 0Dα and 1Dα did not differ among sites, while 2Dα separated one of the sites, which also showed a different diversity profile. Beta diversity did not show a strong species turnover among sites (0Dβ, 1.38-1.45; 2Dβ, 1.35-1.56).
Conclusions: The composition of trees and shrubs in the forest sampled was similar to other seasonal forests, while the density and diversity were among the lowest values.
Publisher
Botanical Sciences, Sociedad Botanica de Mexico, AC
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