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Effects of extra food on population fluctuation patterns of the muroid rodent Calomys venustus
Author(s) -
Castellarini F.,
Polop J.
Publication year - 2002
Publication title -
austral ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.688
H-Index - 87
eISSN - 1442-9993
pISSN - 1442-9985
DOI - 10.1046/j.1442-9993.2002.01178.x
Subject(s) - rodent , population , juvenile , home range , biology , population density , ecology , zoology , demography , habitat , sociology
Population dynamics in the South American muroid rodent Calomys venustus are described from a 14‐year continuous data series, using the auto‐regressive integrated moving average ( arima ) model. Population responses to experimental food addition were analysed in two experimental areas, over two periods, using intervention analysis. There was no consistent evidence that food quantity leads to peaks in population density. Significant increases were related to densities of transients and juvenile individuals.