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Title: Spatially explicit population dynamics in a declining population of the tropical rodent, Bolomys lasiurus
Authors: Ghizoni, Ivo Rohling
Layme, Viviane Maria Guedes
Lima, Albertina Pimental
Magnusson, William Ernest
Keywords: Fire
Food Availability
Habitat Structure
Population Decline
Population Dynamics
Para [brazil]
South America
Western Hemisphere
Bolomys Lasiurus
Issue Date: 2005
metadata.dc.publisher.journal: Journal of Mammalogy
metadata.dc.relation.ispartof: Volume 86, Número 4, Pags. 677-682
Abstract: We investigated the effects of food availability, fire, and habitat structure on population rates of increase of the rodent Bolomys lasiurus in forty 4-ha plots distributed over an area of about 200 km2 in Amazonian savannas near Alter do Chão, Pará, Brazil. Mean rodent density over the entire study area declined by about one-half during the study period, despite largely independent density fluctuations within plots. Fires had no detectable association with density and population growth rates. Both densities and population growth rates were significantly associated with availability of invertebrate prey and a multivariate index of habitat structure. Invertebrate availability varied temporally within plots, and was not predictable from knowledge of vegetation structure or fire events. © 2005 American Society of Mammalogists.
metadata.dc.identifier.doi: 10.1644/1545-1542(2005)086[0677:SEPDIA]2.0.CO;2
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