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<p>Dung beetles provide key ecological services in grazed ecosystems, including nutrient cycling, soil fertilisation, secondary seed dispersal and parasite control, and are widely used as indicators of environmental change. We studied the diversity and structure of dung beetle assemblages across two bioclimatic areas (arid and semi-arid) of the Djelfa region. Four steppe ecosystems were sampled, Aleppo pine forest, dune cordon, steppe rangeland and an Atlas pistachio Daya<i>,</i> using selective pitfall traps from March 2016 to February 2017. A total of 41,855 individuals representing 65 species (42% of Algeria’s known coprophagous Scarabaeoidea) were collected. Dwellers showed greatest species richness and abundance, whereas rollers contributed most to total biomass. Species richness was highest in the dune cordon and lowest in the Daya. Fine-scale variation in grazing intensity significantly influenced the abundance of nesting guilds. These findings underline the need to conserve steppe ecosystems to protect dung beetle biodiversity.</p>

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Diversity and structure of the dung beetle assemblage (Coleoptera: Scarabaeoidea) across steppe ecosystems in Djelfa, Algeria

  • 期刊论文

  • 发表日期：

    2026年5月11日

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  • Sabrina Amraoui,
  • Nadia Bouragba,
  • Ahmed Brague,
  • Gahdab Chakali,
  • Lynda Beladjal

摘要

Dung beetles provide key ecological services in grazed ecosystems, including nutrient cycling, soil fertilisation, secondary seed dispersal and parasite control, and are widely used as indicators of environmental change. We studied the diversity and structure of dung beetle assemblages across two bioclimatic areas (arid and semi-arid) of the Djelfa region. Four steppe ecosystems were sampled, Aleppo pine forest, dune cordon, steppe rangeland and an Atlas pistachio Daya, using selective pitfall traps from March 2016 to February 2017. A total of 41,855 individuals representing 65 species (42% of Algeria’s known coprophagous Scarabaeoidea) were collected. Dwellers showed greatest species richness and abundance, whereas rollers contributed most to total biomass. Species richness was highest in the dune cordon and lowest in the Daya. Fine-scale variation in grazing intensity significantly influenced the abundance of nesting guilds. These findings underline the need to conserve steppe ecosystems to protect dung beetle biodiversity.