David Valenzuela-Galván

Dr. David Valenzuela-Galván

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Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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22 January 2024 in Proceedings of the National Academy of Sciences
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Journal Article
Open access
DADaniel Martín Auliz-Ortiz
Daniel Martín Auliz-Ortiz
JBJulieta Benítez-Malvido
Julieta Benítez-Malvido
VAVíctor Arroyo-Rodríguez
Víctor Arroyo-Rodríguez
RDRodolfo Dirzo
Rodolfo Dirzo
Miguel Angel Pérez-FarreraMiguel Angel Pérez-Farrera
Miguel Angel Pérez-Farrera
MMMiguel Martínez-Ramos
Miguel Martínez-Ramos
Protected areas are of paramount relevance to conserving wildlife and ecosystem contributions to people. Yet, their conservation success is increasingly threatened by human activities including habitat loss, climate change, pollution, and species overexploitation. Thus, understanding the underlying and proximate drivers of anthropogenic threats is urgently needed to improve protected areas’ effectiveness, especially in the biodiversity-rich tropics. We addressed this issue by analyzing expert-provided data on long-term biodiversity change (last three decades) over 14 biosphere reserves from the Mesoamerican Biodiversity Hotspot. Using multivariate analyses and structural equation modeling, we tested the influence of major socioeconomic drivers (demographic, economic, and political factors), spatial indicators of human activities (agriculture expansion and road extension), and forest landscape modifications (forest loss and isolation) as drivers of biodiversity change. We uncovered a significant proliferation of disturbance-tolerant guilds and the loss or decline of disturbance-sensitive guilds within reserves causing a “winner and loser” species replacement over time. Guild change was directly related to forest spatial changes promoted by the expansion of agriculture and roads within reserves. High human population density and low nonfarming occupation were identified as the main underlying drivers of biodiversity change. Our findings suggest that to mitigate anthropogenic threats to biodiversity within biosphere reserves, fostering human population well-being via sustainable, nonfarming livelihood opportunities around reserves is imperative.

22 September 2021 in Conservation Genetics
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Journal Article
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AFAlejandro Flores-Manzanero
Alejandro Flores-Manzanero
DVDavid Valenzuela-Galván
David Valenzuela-Galván
ACAlfredo D. Cuarón
Alfredo D. Cuarón
EVElla Vázquez-Domínguez
Ella Vázquez-Domínguez

21 January 2011 in Mammalian Species
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Journal Article
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AVAlejandra de Villa-Meza
Alejandra de Villa-Meza
RARafael Avila-Flores
Rafael Avila-Flores
ACAlfredo D. Cuarón
Alfredo D. Cuarón
DVDavid Valenzuela-Galván
David Valenzuela-Galván
Procyon pygmaeus Merriam, 1901, commonly called the Cozumel raccoon, is a procyonid that is endemic to Cozumel Island, Mexico. It is the smallest mem

29 November 2018 in Ethnobiology and Conservation
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Journal Article
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TGTania Vianney Gutiérrez-Santillán
Tania Vianney Gutiérrez-Santillán
UAUlysses Albuquerque
Ulysses Albuquerque
DVDavid Valenzuela-Galván
David Valenzuela-Galván
FZFrancisco Reyes Zepeda
Francisco Reyes Zepeda
LVLuis-Bernardo Vázquez
Luis-Bernardo Vázquez
LALeonardo Uriel Arellano-Méndez
Leonardo Uriel Arellano-Méndez
Systematic reviews and meta-analytical approach are a tool used in different social and biological disciplines, but its application in evaluating ethnobiological information is scarce. Thus, through this analytical approach, we seek to answer if there are any patterns in the mexican ethnozoological scientific production. We searched for studies published between 2005 and 2015 in catalogues, repositories and databases. For evaluating significative differences among seven variable datasets, we first used non parametric Kruskal-Wallis tests and then Tukey multiple comparison tests. We also determined the link between researchers and institutions with a multidimensional non-metric scaling analysis. We found 295 published studies, book chapters were the most representative (27%), diffusion articles (20%), impact factor articles (15%) and indexed articles (14%). There are significant differences in the number of publications among the evaluated years, among thematic areas, study focus (qualitative/quantitative), ethnographic and biological methods. Regarding academic linking, we identified 94 author adscription institutions, however, no research networks were identified. Our results suggest that the amount, diffusion and reach of mexican ethnozoological production show a tendency to non-periodic publishing, predilection for qualitative approach, a low use of statistical and ethnobiological analysis, as well as an inadequate selection of biological methods. We suggest this data analysis approach will allow a better standardization for information taking and processing, aiding the discipline in its growth and consolidation.


20 October 2021 in Animal Conservation
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Journal Article
Open access
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DVDavid Valenzuela-Galván
David Valenzuela-Galván
ACA. D. Cuarón
A. D. Cuarón
MMM. A. Martínez‐Morales
M. A. Martínez‐Morales
LVL.‐B. Vázquez
L.‐B. Vázquez
EVElla Vázquez-Domínguez
Ella Vázquez-Domínguez
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