Land Use and Land Cover Change in Highland Temperate Forests in the Izta-Popo National Park, Central Mexico

Galicia, Leopoldo; García‐Romero, Arturo

doi:10.1659/0276-4741(2007)27[48:lualcc]2.0.co;2

Cited by 43 publications

(27 citation statements)

References 32 publications

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“…In fact, the most diverse populations, which were historically source populations, are found in the eastern part of the range and are not currently protected. The north‐eastern highlands of the TVB are threatened by severe encroachment due to urban and agricultural development (García‐Romero, 2002; Galicia & García‐Romero, 2007). The preservation of populations with high genetic diversity is especially important for preserving adaptive genetic variation and evolutionary potential in the face of global environmental change (Spielman et al.…”

Section: Discussionmentioning

confidence: 99%

Isolation in habitat refugia promotes rapid diversification in a montane tropical salamander

Parra‐Olea¹,

Windfield-Pérez²,

Velo‐Antón³

et al. 2011

Journal of Biogeography

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Aim Our goal was to reconstruct the phylogenetic history and historical demography of highly divergent populations of the endemic plethodontid salamander Pseudoeurycea leprosa, to elucidate the timing and mechanisms of divergence in the Trans‐Volcanic Belt of Mexico. Location The Trans‐Volcanic Belt (TVB) of central Mexico, including the states of Mexico, Morelos, Puebla, Tlaxcala and Veracruz. Methods We sequenced the cytochrome b mitochondrial DNA gene for 281 individuals from 26 populations and nine mountain ranges in the TVB, and used Bayesian phylogenetic reconstruction and Markov chain Monte Carlo coalescent methods to infer historical demographic parameters and divergences among populations in each mountain system. Results We found deep genetic divergences between eastern and central TVB mountain systems despite their recent volcanic origin. Populations of P. leprosa show a pattern of refugial populations in the north‐eastern and eastern limits of the species’ distribution, and genetic evidence of rapid population expansion in mountain ranges of the central TVB. The oldest divergences among populations date to c. 3.8 Ma, and the most recent divergences in the central TVB are Pleistocene in age (c. 0.7 Ma). Main conclusions Given the timing and order of population diversification in P. leprosa, we conclude that early isolation in multiple habitat refuges in north‐eastern and eastern mountain ranges played an important role in structuring population diversity in the TVB, followed by population expansion and genetic divergence of the central range populations. The dynamic climatic and volcanic changes in this landscape generally coincide with the history of intra‐specific diversification in P. leprosa. Climate‐driven changes in habitat distribution in an actively changing volcanic landscape have shaped divergences in the TVB and very likely contributed to the high levels of speciation and endemism in this biodiverse region.

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Section: Discussionmentioning

confidence: 99%

Isolation in habitat refugia promotes rapid diversification in a montane tropical salamander

Parra‐Olea¹,

Windfield-Pérez²,

Velo‐Antón³

et al. 2011

Journal of Biogeography

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“…In central Mexico, some Quercus forests (dominated by Quercus deserticola and Quercus frutex among others) are often associated with water-stress conditions similar to those found in scrubs (Medina Lemus and Tejero-Díez 2006). Also, severe deforestation in the last century in central Mexico has led to the establishment of shrub-or scrub-type vegetation in sites previously occupied by Quercus or other tree species (Rzedowski 1978;Challenger 1998;Galicia and García-Romero 2007). In particular, in one scrub locality sampled in this study (Concordia), we found several sparsely Quercus sp.…”

Section: Differential Morphological Expression Of C Bipinnatus Undermentioning

confidence: 50%

Morphological variation of Cosmos bipinnatus (Asteraceae) and its relation to abiotic variables in central Mexico

Paniagua-Ibáñez

López-Caamal

Mussali-Galante

et al. 2015

Rev. Chil. de Hist. Nat.

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Background: Morphological variability can lead to serious taxonomic problems in species with wide distribution ranges. Although morphological variability is partly due to ontogenetic programming, abiotic variables can also exert a significant effect on micro-and macromorphological characters. In this paper, we studied the morphological variability (43 characters) of Cosmos bipinnatus associated to different vegetation types in central Mexico. We searched for significant correlations between the overall morphology of C. bipinnatus and abiotic variables such as altitude and soil parameters (pH, organic matter content, NH 4 , NO 3 , PO 4 , total N and total P content). We also analyzed the Simplified Relative Distance Plasticity Index (RDPI s ). Results: Locality had a significant effect in all but three morphological characters measured. Also, 71.43 % of the characters had a significant correlation with at least one abiotic variable. PO 4 content was significantly correlated with paleae characters, while pH had a significant effect in ligule coloration. Discriminant function analysis revealed that C. bipinnatus individuals collected at grasslands and Pinus forests form separate clusters, while individuals collected at scrubs and Quercus forests showed considerable overlap. The RDPI s across all sites showed very low levels of plasticity in almost all characters. Conclusions: Some abiotic variables (altitude, soil NH 4 and PO 4 content, and soil pH) largely contribute to the differential phenotypic expression of C. bipinnatus in central Mexico. However, we found that the number of external phyllaries, the trichome length, and the petiole area can be considered diagnostic traits of C. bipinnatus as they did not show differences within and between collected sites. We hypothesize that the low levels of plasticity found in C. bipinnatus across sites is due to the high tolerance of the species to different environmental conditions.

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“…TMF temperate montane forest, MCF montane cloud forest, TRF tropical rain forest, TSDF tropical semideciduos forest of the Yucatán peninsula, TDF tropical dry forests along the Pacific Coast of Mexico, CHD chihuahuan desert, CRP coral reefs, Pacific, CRC coral reefs, Caribbean, MF mangrove forest, KF kelp forest, SLE saline lake ecosystems c ecosystem (Table S1). These forests are characterized by slower rates of recovery where land use conversion to agriculture and forestry are considered the major anthropogenic disturbance (Galicia and García-Romero 2007). Infrastructure development near this ecosystem can influence greater areas.…”

Section: Terrestrial Ecosystemsmentioning

confidence: 99%

An assessment of natural and human disturbance effects on Mexican ecosystems: current trends and research gaps

et al. 2012

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Mexico harbors more than 10% of the planet's endemic species. However, the integrity and biodiversity of many ecosystems is experiencing rapid transformation under the influence of a wide array of human and natural disturbances. In order to disentangle the effects of human and natural disturbance regimes at different spatial and temporal scales, we selected six terrestrial (temperate montane forests, montane cloud forests, tropical rain forests, tropical semi-deciduous forests, tropical dry forests, and deserts) and four aquatic (coral reefs, mangrove forests, kelp forests and saline lakes) ecosystems. We used semiquantitative statistical methods to assess (1) the most important agents of disturbance Electronic supplementary material The online version of this article (affecting the ecosystems, (2) the vulnerability of each ecosystem to anthropogenic and natural disturbance, and (3) the differences in ecosystem disturbance regimes and their resilience. Our analysis indicates a significant variation in ecological responses, recovery capacity, and resilience among ecosystems. The constant and widespread presence of human impacts on both terrestrial and aquatic ecosystems is reflected either in reduced area coverage for most systems, or reduced productivity and biodiversity, particularly in the case of fragile ecosystems (e.g., rain forests, coral reefs). In all cases, the interaction between historical human impacts and episodic high intensity natural disturbance (e.g., hurricanes, fires) has triggered a reduction in species diversity and induced significant changes in habitat distribution or species dominance. The lack of monitoring programs assessing before/after effects of major disturbances in Mexico is one of the major limitations to quantifying the commonalities and differences of disturbance effects on ecosystem properties.

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Land Use and Land Cover Change in Highland Temperate Forests in the Izta-Popo National Park, Central Mexico

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 43 publications

References 32 publications

Isolation in habitat refugia promotes rapid diversification in a montane tropical salamander

Isolation in habitat refugia promotes rapid diversification in a montane tropical salamander

Morphological variation of Cosmos bipinnatus (Asteraceae) and its relation to abiotic variables in central Mexico

An assessment of natural and human disturbance effects on Mexican ecosystems: current trends and research gaps

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