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Artículo

The spatial variation in ant species composition and functional groups across the Subantarctic-Patagonian transition zone

Fergnani, Paula NildaIcon ; Sackmann Braceras, PaulaIcon ; Ruggiero, AdrianaIcon
Fecha de publicación: 06/2013
Editorial: Springer
Revista: Journal of Insect Conservation
ISSN: 1366-638X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Zoología, Ornitología, Entomología, Etología

Resumen

The role of ecotones in the maintenance of species diversity is rather controversial; they may represent either biodiversity hotspots with unique and rare forms, or be transitional areas that hold marginal populations of species. We analyse the taxonomic and functional composition of ant species assemblages across the Subantarctic-Patagonian transition to evaluate the role that transitional shrublands may play in the maintenance of the taxonomic and functional differentiation. We collected ants using 450 pitfall traps within a ~150 × 150 km area. Species were classified into functional groups in relation to stress and disturbance, and in foraging groups according to their foraging behavior. An indicator value for each species in each habitat was calculated. The steppes and the forests strongly differed in ant species and functional composition. Climatic effects combined with structural components of plant environment explained about 23–27 % of the variation in ant composition. The shrublands did not show a distinctive fauna, and show greater similarity in ant species composition and in the proportional occupancy of functional groups to the steppes than to the forests. They harbor neither rare nor indicator species, except for Lasiophanes valdiviensis, and thus this reinforces the idea that they are not a habitat source of species, but an area of encounter between two distinct forest- and steppe- ant faunas, where a high number of local distributional limits of ant species overlap.
Palabras clave: Formicidae , Ecotone , Biogeographic Transition , Indval , Rda , Cluster Analysis
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/6664
URL: http://link.springer.com/article/10.1007/s10841-012-9510-3
DOI: http://dx.doi.org/10.1007/s10841-012-9510-3
Colecciones
Articulos(INIBIOMA)
Articulos de INST. DE INVEST.EN BIODIVERSIDAD Y MEDIOAMBIENTE
Citación
Fergnani, Paula Nilda; Sackmann Braceras, Paula; Ruggiero, Adriana; The spatial variation in ant species composition and functional groups across the Subantarctic-Patagonian transition zone; Springer; Journal of Insect Conservation; 17; 2; 6-2013; 295-305
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