Aspectos generales de la flora vascular de la Península de Yucatán, México

Abstract

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Patterns of Species Richness and Distribution of the Genus Laelia s.l. vs. Laelia s.s. (Laeliinae: Epidendroideae: Orchidaceae) in Mexico: Taxonomic Contribution and Conservation Implications

“…Although the genus is widely distributed throughout the Mexican territory, it has a greater affinity towards temperate forests, mainly in the western and southwestern regions of the country, which register the greatest diversity. Consequently, it is not uncommon to find low species richness in the lowlands of the southeast of the country, specifically in the Yucatan Peninsula, given its abiotic characteristics and dominant humid tropical forest [ 42 , 43 ]. Similarly, the scarce presence of the group in the north of the country, in the xerophytic scrubland biome, is not surprising, since an arid climate typical of the nearctic region dominates here, making it unfavorable for the establishment of a large number of groups [ 44 ] and orchid endemism [ 42 ], especially from the subtribe Laeliinae, whose species are strictly neotropical [ 45 ].…”

Rebrote arbóreo en la regeneración del bosque tropical de Calakmul, Campeche, México

“…El patrón de similitud entre los bosques secundarios y maduros que se presentan en esta región, ha sido reportado en otros estudios, por ejemplo González-Valdivia et al (2012), al estudiar bosques tropicales en Tenosique, Tabasco, México, señalan que los bosques conservados con respecto a los secundarios la similitud del arbolado es menor que el 20 %. Las causas de la heterogeneidad interna en estos bosques, tanto primarios como sucesionales, no han sido plenamente dilucidadas, pero en el caso de Calakmul, posiblemente se relacionen con la abigarrada variedad de microcondiciones de suelo y relieve, la hidrología, a la exposición de las pendientes y a la actividad milenaria del hombre (Duno de Stefano et al, 2018), además de las variaciones y heterogeneidad ecosistémica, que resultan de los disturbios naturales frecuentes, como explican Swanson et al (2010). Más investigaciones en este campo se hacen necesarias para comprender la sucesión (Dupuy et al, 2012).…”

Biogeographical History of the Yucatan Peninsula Endemic Flora (Spermatophyta) from a Phylogenetic Perspective1

“…extended.tre) that includes 74, 533 species and all 479 families known to date. For this purpose, a list of vascular plant species obtained from the YPBP Digital Flora (Duno et al, 2019) and updated with the aforementioned endemic species list was used. Because V.Phylomaker uses the list of species accepted by The Plant List (TPL; http://www.theplantlist.org/) as a reference, in order for the program to identify the correct branch insertion position, new names were updated using the r.bind function.…”