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<p>The fragmentation of tropical deciduous forests in the Mexican state of Chiapas has resulted in small remnants immersed in an agricultural matrix. Often, these forest fragments are delimited by live fences, which may be ecologically important in terms of the potential habitat connectivity. In this work, we compared the structure, diversity, and species composition of dung beetle assemblages in three representative habitats (forest, live fences, and cattle pastures) in the region. Six samplings were conducted during the 2019 rainy season, using pitfall traps baited with pig dung. A total 2,025 individuals of 23 species and 14 genera, were captured. Diversity was higher in the forest, but species composition reveals a high similarity of this habitat with the live fence, while the cattle pasture composition shows a clear segregation, indicating the existence of two different assemblages between the three habitats. The high similarity with forest in species composition and the presence of an indicator species suggest that live fences function as conspicuous elements that allow high connectivity between forest patches, facilitating the movement of some species that avoid open areas in the agricultural landscape.</p>

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Dung beetle assemblages in forest fragments and adjacent matrix: are live fences important for preserving diversity in a fragmented landscape?

  • 期刊论文

  • 发表日期：

    2025年12月22日

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  • Martín A. Hernández-Molina,
  • Gibrán Sánchez-Hernández,
  • Eduardo Rafael Chamé-Vázquez,
  • Jorge Ari Noriega,
  • Cesar Tejeda-Cruz

摘要

The fragmentation of tropical deciduous forests in the Mexican state of Chiapas has resulted in small remnants immersed in an agricultural matrix. Often, these forest fragments are delimited by live fences, which may be ecologically important in terms of the potential habitat connectivity. In this work, we compared the structure, diversity, and species composition of dung beetle assemblages in three representative habitats (forest, live fences, and cattle pastures) in the region. Six samplings were conducted during the 2019 rainy season, using pitfall traps baited with pig dung. A total 2,025 individuals of 23 species and 14 genera, were captured. Diversity was higher in the forest, but species composition reveals a high similarity of this habitat with the live fence, while the cattle pasture composition shows a clear segregation, indicating the existence of two different assemblages between the three habitats. The high similarity with forest in species composition and the presence of an indicator species suggest that live fences function as conspicuous elements that allow high connectivity between forest patches, facilitating the movement of some species that avoid open areas in the agricultural landscape.