Biogeographic analysis of ferns and lycophytes in Oaxaca: A Mexican beta-diverse area
| Autor: | Ricardo Balam-Narváez, Raúl Contreras-Medina, David Espinosa, Isolda Luna-Vega, Julio Cesar Ramírez-Martínez, Azael I. García-Martínez |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Botanical Sciences. 100:204-222 |
| ISSN: | 2007-4476 2007-4298 |
| Popis: | Background: Spatial patterns related to richness and endemism of Mexican ferns and lycophytes are not well known, particularly in highly biodiverse areas; among these, Oaxaca is considered a highly biodiverse Mexican state. Questions: Where are located the centers of richness and endemism of lycophytes and ferns in Oaxaca? Both groups of plants support the idea of beta-diverse state condition for Oaxaca? Study site and research period: The study includes all territory of Oaxaca, between 2015 and 2019. Methods: We analyzed the species distribution using grid cells of 20’ × 20’ of latitude and longitude as study units. For this, we applied species richness, endemism indexes (weighted endemism and corrected weighted endemism), and components of biodiversity (a, b and g), associated with a complementarity index. The distributional data of the species were mainly obtained from herbarium specimens. Results: The richness areas are concentrated in the Sierra Norte and Istmo regions. Three important areas in richness and endemic species are suggested from the endemism indexes. Most of the grid-cell combinations resulted in high values from the complementarity analysis suggesting a high species turnover. Conclusions: The diversity analyses suggested that Oaxaca is a beta-diverse state. The NOM-059 needs a serious, urgent, and critical revision for ferns and different biological groups. The Areas Voluntarily Designated for Conservation in Oaxaca play a major role in relation to Natural Protected Areas for conservation of ferns and lycophytes. |
| Databáze: | OpenAIRE |
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