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Populations and assemblages living on the edge: dung beetles responses to forests-pasture ecotones.
Martínez-Falcón, Ana Paola; Zurita, Gustavo A; Ortega-Martínez, Ilse J; Moreno, Claudia E.
Afiliação
  • Martínez-Falcón AP; Centro de Investigaciones Biológicas-Instituto de Ciencias Básicas e Ingenierías, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo, Mexico.
  • Zurita GA; Instituto de Biología Subtropical-Facultad de Ciencias Forestales, Universidad Nacional de Misiones-CONICET, Puerto Iguazú, Misiones, Argentina.
  • Ortega-Martínez IJ; Centro de Investigaciones Biológicas-Instituto de Ciencias Básicas e Ingenierías, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo, Mexico.
  • Moreno CE; Centro de Investigaciones Biológicas-Instituto de Ciencias Básicas e Ingenierías, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo, Mexico.
PeerJ ; 6: e6148, 2018.
Article em En | MEDLINE | ID: mdl-30581687
Edge effects alter insect biodiversity in several ways. However, we still have a limited understanding on simultaneous responses of ecological populations and assemblages to ecotones, especially in human modified landscapes. We analyze edge effects on dung beetle populations and assemblages between livestock pastures and native temperate forests (Juniperus and pine-oak forests (POFs)) to describe how species abundances and assemblage parameters respond to edge effects through gradients in forest-pasture ecotones. In Juniperus forest 13 species avoided the ecotones: six species showed greater abundance in forest interior and seven in pasturelands, while the other two species had a neutral response to the edge. In a different way, in POF we found five species avoiding the edge (four with greater abundance in pastures and only one in forest), two species had a neutral response, and two showed a unimodal pattern of abundance near to the edge. At the assemblage level edge effects are masked, as species richness, diversity, functional richness, functional evenness, and compositional incidence dissimilarity did not vary along forest-pasture ecotones. However, total abundance and functional divergence showed higher values in pastures in one of the two sampling localities. Also, assemblage similarity based on species' abundance showed a peak near to the edge in POF. We propose that conservation efforts in human-managed landscapes should focus on mitigating current and delayed edge effects. Ecotone management will be crucial in livestock dominated landscapes to conserve regional biodiversity and the environmental services carried out by dung beetles.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: PeerJ Ano de publicação: 2018 Tipo de documento: Article País de afiliação: México País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: PeerJ Ano de publicação: 2018 Tipo de documento: Article País de afiliação: México País de publicação: Estados Unidos