Endemic regions of the vascular flora of the peninsula of Baja California, Mexico

Riemann, Hugo; Ezcurra, Exequiel

doi:10.1658/1100-9233(2007)18[327:erotvf]2.0.co;2

Cited by 10 publications

(20 citation statements)

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“…In addition, for one functional group, the monocot geophytes, significant areas of endemism were identified in the Trans‐Mexican Volcanic Belt, the Sierra Madre Oriental, and in the Tehuacán Valley, which also agrees with our results (Sosa & Loera, ). Moreover, the southernmost mountainous area in the Baja California peninsula was identified as having high degree of endemism (Riemann & Ezcurra, ).…”

Section: Discussionmentioning

confidence: 99%

“…). Earlier research has focused solely on endemism for certain plant groups such as the Tigridieae (Iridaceae), Bursera , oaks, cacti, monocot geophytes and ferns, and a number of studies have focused on patterns of species richness and endemic taxa in certain regions of Mexico (Dávila‐Aranda et al, ; Contreras‐Medina & Luna‐Vega, ; Riemann & Ezcurra, ; Hernández & Gómez‐Hinostrosa, ; De‐Nova et al, ; Gámez et al, ; Rodríguez‐Correa et al, ; Sanginés‐Franco et al, ; Munguía‐Lino et al, ; Sosa & Loera, ; De‐Nova et al, ). The majority of these studies identified the southern regions of the Sierra Madre Oriental and Sierra Madre Occidental mountain ranges, the Trans‐Mexican Volcanic Belt and the Tehuacán Valley as having high degrees of endemism.…”

Section: Introductionmentioning

confidence: 99%

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Evolutionary history of the flora of Mexico: Dry forests cradles and museums of endemism

Sosa

De‐Nova

Vásquez‐Cruz

2018

J of Sytematics Evolution

115

102

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Mexico is considered an exceptional biogeographic area with a varied endemic flora, however spatial phylogenetic measures of biodiversity have not yet been estimated to understand how its flora assembled to form the current vegetation. Patterns of species richness, endemism, phylogenetic diversity, phylogenetic endemism and centers of neo-and paleo-endemism were determined to examine differences and congruence among these measures, and their implications for conservation. Of 24 360 vascular plant species 10 235 (42%) are endemic. Areas of endemism and phylogenetic endemism were associated with dry forests in zones of topographic complexity in mountain systems, in deserts, and in isolated xeric vegetation. Every single locality where seasonally tropical dry forests have been reported in Mexico was identified as an area of endemism. Significant phylogenetic diversity was the most restricted and occurred in the Trans-Mexican Volcanic Belt and in the Sierra de Chiapas. Notably, the highest degree of phylogenetic clustering comprising neo-, paleo-, and super-endemism was identified in southernmost Mexico. Most vascular plant lineages diverged in the Miocene (5-20 mya) when arid environments expanded across the world. The location of Mexico between two very large landmasses and the fact that more than fifty percent of its surface is arid favored the establishment of tropical lineages adapted to extreme seasonality and aridity. These lineages were able to migrate from both North and South America across Central America presumably during the Miocene and to diversify, illustrating the signature of the flora of Mexico of areas of endemism with a mixture of neo-and paleo-endemism.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evolutionary history of the flora of Mexico: Dry forests cradles and museums of endemism

Sosa

De‐Nova

Vásquez‐Cruz

2018

J of Sytematics Evolution

115

102

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“…The El Vizcaíno Desert is one of the primary endemic zones of the peninsula, with unique bird, reptile and mammal species (Castellanos, Salinas, & Ortega-Rubio, 2001;Leache, Crews, & Hickerson, 2007;Riemann & Exequiel, 2007). The largest plant communities are xerophytes and halophytes (Peinado, Delgadillo, & Aguirre, 2005).…”

Section: Study Areamentioning

confidence: 99%

Regional Landscape Change in Fishing Communities of the Mexican North Pacific

Álvarez¹,

Seingier²,

Bocco

et al. 2015

Landscape Research

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The study of rural communities is a key element in understanding economic activities and conserving successful methods of resource management and social organisation. The conceptual and operational research axes were interdisciplinary environmental geography and integrative concept landscape. A participatory geographic information system (PGIS) was built to incorporate scientific and local knowledge. Regional landscape changes were analysed in fishing communities of the Mexican North Pacific, based on three historical maps. The main land-and seascape changes were: extensive stockbreeding disappeared; intensive agriculture increased; human settlements expanded; and fishing zones were created, divided and expanded seawards. Marine environment was the most changeable territory, reflecting the dominance of fishing activities. The PGIS proved to be a useful tool for identifying and understanding the changes in fishery management and the resulting dynamics of marine landscape zoning in the various communities, and in future projects would be equally applicable to coastal management and territorial organisation.

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“…This fragmented distribution is further encouraged by the orophilous character of the species, with plant populations occurring up to 2070 m asl (Mota, Valle & Cabello, 1993). The distribution of C. boissieri populations can be described as following a similar pattern to that of sky islands in North America (Dechaine & Martin, 2005;Riemann & Ezcurra, 2007) or inselbergs in Brazil (Sarthou, Samadi & Boisselier-Dubayle, 2001;Barbará et al, 2007). The effect of habitat fragmentation on the genetic variability of plant populations, and the possible impact of palaeogeological events (e.g.…”

Section: Introductionmentioning

confidence: 99%

Variability, genetic structure and phylogeography of the dolomitophilous speciesConvolvulus boissieri(Convolvulaceae) in the Baetic ranges, inferred from AFLPs, plastid DNA and ITS sequences

et al. 2014

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Convolvulus boissieri is an edaphic endemic plant which grows in the Baetic ranges always in association with high mountain xeric dolomitic outcrops. As these dolomitic areas appear in a 'soil-island' pattern, the distribution of this species is disjunct. Populations of this species frequently include a low number of individuals, which could have an important impact on their genetic diversity and viability. Convolvulus boissieri provides an excellent opportunity to study the genetic and phylogeographical aspects of species linked to dolomites. We used amplified fragment length polymorphism markers and nuclear (internal transcribed spacer region of the nuclear ribosomal cistron) and plastid sequences (trnL-trnF, rpl32-trnL and trnQ-5′rps16). Data were generated from 15 populations, representing the distribution area of the species. For sequence analysis and estimation of divergence times we also used sequences from other Convolvulus species. Results revealed low intrapopulational genetic diversity and a strong interpopulational structure. Furthermore, we found clear-cut differentiation caused by the existence of two large population groups separated by the Guadiana Menor river basin. Estimation of divergence times indicated that divergence took place during the Pleistocene glaciations. Genetic diversity and differentiation are similar to those other species exhibiting naturally fragmented distribution with a sky islands pattern. In phylogeographical terms, the successive glaciation-interglaciation cycles caused the species to spread from the western sites to eastern sites, the latter being more exposed to the effects of glaciation.

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Endemic regions of the vascular flora of the peninsula of Baja California, Mexico

Cited by 10 publications

References 0 publications

Evolutionary history of the flora of Mexico: Dry forests cradles and museums of endemism

Evolutionary history of the flora of Mexico: Dry forests cradles and museums of endemism

Regional Landscape Change in Fishing Communities of the Mexican North Pacific

Variability, genetic structure and phylogeography of the dolomitophilous speciesConvolvulus boissieri(Convolvulaceae) in the Baetic ranges, inferred from AFLPs, plastid DNA and ITS sequences

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