IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2015  > Vol12 No.4
Diversity, Endemism and Conservation of Ferns (Polypodiales) in the Mexican Mountain Component
Corresponding AuthorLUNA-VEGA Isolda
Source PublicationJournal of Mountain Science
AbstractWe analyzed the distributional patterns of 95 selected species of leptosporangiate ferns inhabiting the Mexican Mountain Component, using grid-cells of one geographical degree as unit areas, applying endemism indices and richness and beta diversity analyses. Distributional data were obtained from several herbaria and specialized literature. Five grid-cells appear to be important for fern species richness, as they contain 35 to 49 species. These grid-cells are located in the Sierra Madre Oriental (SMO), Trans-Mexican Volcanic Belt (TMVB) and the Sierra Madre del Sur (SMS). Mean richness by latitudinal belts of one degree showed that the belts with highest values are related to the TMVB and SMS. A total of 13 grid-cells were recognized as important from the perspective of endemism; most of them are located also in the SMO, TMVB and SMS. The richest grid-cells coincided with one of the main centres of endemism for ferns obtained in this study, located in the convergence of the southern part of the SMO, the eastern portion of the TMVB and the northern part of the SMS, reflecting the high humidity existing on the mountain slopes facing the Gulf of Mexico. Some important grid-cells recognized from richness and endemism analyses coincide with Mexican Natural Protected Areas. The beta diversity analysis showed a low degree of similarity among grid-cells, implying a high species replacement, as theresult of environmental heterogeneity occurring in the Mexican mountain systems.On the other hand, the spatial analysis suggested a pattern of phytogeographical regionalization comprising two main areas: the Mexican Transition Zone and the Mexican Central Plateau. Ferns play an important role in the Mexican biodiversity and contributing to the beta diversity of Mexico.
KeywordBiogeography Distributional Patterns Leptosporangiate Ferns Mexico
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Document Type期刊论文
CollectionJournal of Mountain Science_Journal of Mountain Science-2015_Vol12 No.4
Corresponding AuthorLUNA-VEGA Isolda
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GB/T 7714
SANGINÉS-FRANCO Celia,LUNA-VEGA Isolda,CONTRERAS-MEDINA Raúl,et al. Diversity, Endemism and Conservation of Ferns (Polypodiales) in the Mexican Mountain Component[J]. Journal of Mountain Science,2015,12(4):891-904.
APA SANGINÉS-FRANCO Celia,LUNA-VEGA Isolda,CONTRERAS-MEDINA Raúl,ESPINOSA David,TEJERO-DÍEZ José Daniel,&RIVAS Gerardo.(2015).Diversity, Endemism and Conservation of Ferns (Polypodiales) in the Mexican Mountain Component.Journal of Mountain Science,12(4),891-904.
MLA SANGINÉS-FRANCO Celia,et al."Diversity, Endemism and Conservation of Ferns (Polypodiales) in the Mexican Mountain Component".Journal of Mountain Science 12.4(2015):891-904.
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