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Assessing rodent community responses in disturbed environments of the Chilean Patagonia

  • Karla P. García EMAIL logo , Juan Carlos Ortiz Zapata , Mauricio Aguayo und Guillermo D’Elia
Veröffentlicht/Copyright: 1. November 2012
mammalia
Aus der Zeitschrift mammalia Band 77 Heft 2

Abstract

The effects of a perturbation gradient on a Patagonian rodent community were assessed over the course of a year by comparing the community parameters in natural and different disturbed environments in the central Chilean Patagonia. The studied habitat types were mature forest, second-growth forest, forest plantations, and agricultural grassland. We recorded eight species of sigmodontine rodents (Abrothrix longipilis, Abrothrix olivaceus, Chelemys macronyx, Geoxus valdivianus, Irenomys tarsalis, Loxodontomys micropus, Oligoryzomys longicaudatus, and Reithrodon auritus). Most species experience an increment in abundance from summer to autumn, with a notable decrease in winter and spring. The grassland showed lower species abundance than the mature forest. However, we did not detect significant differences in diversity, evenness, or species richness among the forest habitats. Our results suggest that rodents basically distinguish between forested and open areas, but not the specific plant composition of each habitat. Thus, the change in land use in the central Chilean Patagonia has not significantly affected the community parameters of diversity, evenness, or species richness.

Keywords: Chilean Patagonia; community parameters; land use; perturbation; Sigmodontinae
Corresponding author: Karla P. García, Departamento de Zoología, Universidad de Concepción, Casilla 160-C, Concepción, Chile

This study was supported by Project FONDECYT 1070511 and 1110737, Project DIUC Semilla Patagonia 205.113.066 from Universidad de Concepción, and Project MECESUP AUS0805. We thank Mirta Ramirez, Francisco Meza, Víctor Mata, and Corporación Nacional Forestal (CONAF) of the Región de Aysén for granting permits to work on their lands. We thank Guillermo Solar and Guardaparques of Service Forest of Chile Víctor Carumilla and Luis Montecinos for their valuable assistance in the field. Nicole Colin assisted in the statistical analysis. Lafayette Eaton translated and provided criticisms of the manuscript.

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Received: 2012-3-29
Accepted: 2012-9-13
Published Online: 2012-11-01
Published in Print: 2013-05-01

©2013 by Walter de Gruyter Berlin Boston

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https://doi.org/10.1515/mammalia-2011-0134
Schlagwörter für diesen Artikel
Chilean Patagonia; community parameters; land use; perturbation; Sigmodontinae

Artikel in diesem Heft

  1. Masthead
  2. Masthead
  3. Original Studies
  4. Age-gender feeding differences in dwarf blue sheep, Pseudois schaeferi (Cetartiodactyla, Bovidae) magnified by the expansion of an invasive plant species
  5. Trophic niche of two sympatric frugivorous bat species in a periurban area of southern Brazil
  6. Feeding on the edge: the diet of the hazel dormouse Muscardinus avellanarius (Linnaeus 1758) on the northern periphery of its distributional range
  7. Asian badger (Meles leucurus, Mustelidae, Carnivora) habitat selection in the Xiaoxing’anling Mountains, Heilongjiang Province, China
  8. Habitat selection, philopatry and spatial segregation in rural Irish hedgehogs (Erinaceus europaeus)
  9. Population dynamics of Akodon montensis and Oligoryzomys nigripes in an Araucaria forest of Southern Brazil
  10. The impact of body mass at birth on postnatal growth in captive Kuhl’s pipistrelle, Pipistrellus kuhlii (Chiroptera, Vespertilionidae)
  11. Differences in population parameters of Rattus norvegicus in urban and rural habitats of central Argentina
  12. Assessing rodent community responses in disturbed environments of the Chilean Patagonia
  13. Skull ontogeny of Lycalopex culpaeus (Carnivora: Canidae): description of cranial traits and craniofacial sutures
  14. Short Notes
  15. Multiple paternity in Asian black bear Ursus thibetanus (Ursidae, Carnivora) determined by microsatellite analysis
  16. First record of a melanistic golden jackal (Canis aureus, Canidae) from Turkey
  17. New records of the Spectacled Slender Opossum Marmosops ocellatus (Didelphimorphia, Didelphidae) with comments on its geographic distribution limits
  18. Second record of the pale brown ghost bat Diclidurus isabella (Thomas, 1920) (Chiroptera, Emballonuridae) from Brazil and range extension into southwestern Brazilian Amazonia
  19. Observation of successful mobbing of an insectivorous bat, Taphozous nudiventris (Emballonuridae), on an avian predator, Tyto alba (Tytonidae)
  20. Natalus macrourus (Gervais, 1856) (Chiroptera: Natalidae) is a senior synonym of Natalus espiritosantensis (Ruschi, 1951)
  21. Book Reviews
  22. Book reviews
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