caa a22 4500 378934880 CHVBK 20180305123638.0 cr unu---uuuuu 161128e20041001xx s 000 0 eng 10.1515/mamm.2004.012 doi (NATIONALLICENCE)gruyter-10.1515/mamm.2004.012 Population dynamics of four marsupials and its relation to resource production in the Atlantic forest in southeastern Brazil [Elektronische Daten] [Rosana Gentile, Ricardo Finotti, Vitor Rademaker, Rui Cerqueira] Variations in mammal population sizes can be related to the availability and abundance of their resources. This study reports the population dynamics of four didelphid marsupials (Didelphis aurita, Philander frenatus, Marmosops incanus and Metachirus nudicaudatus) and its relation to litter fall, used as a measure of resource production. A capture-mark-recapture study (CMR) was carried out in a disturbed area of the Atlantic forest in Rio de Janeiro State, Brazil, in three grids in the locality of Garrafão from April 1997 to February 1999, every other month. Litter was collected every month using 15 squared litter traps of 0.25 m2 in the grids (5 in each grid). Leaves, twigs, reproductive structures and total litter fall rates were calculated as tons ha-1month-1. Population densities, survivorship and recruitment rates were estimated. For D. aurita and P. frenata, population densities were correlated positively only with litter production. For M. incanus, population density was correlated positively with survivorship, litter production and negatively with rainfall. M. nudicaudatus population density was correlated only with recruitment and twigs abundance. The availability of fruits and arthropods had a large influence in the proximal causes on the variation of small mammal populations. In forests where there is an adequate rate of decomposition of the litter, we may understand how resources influence population variation, and litter becomes the base of resources for such marsupials in the Atlantic forest. Copyright 2004, Walter de Gruyter Population Dynamic nationallicence marsupials nationallicence Mammalia nationallicence forest nationallicence Brasil nationallicence Gentile Rosana 1. Laboratório de Biologia e Controle da Esquistossomose, Departamento de Medicina Tropical, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, CP 926, 21045-900 Rio de Janeiro, RJ (Brazil) aut Finotti Ricardo 2. Departamento de Ecologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, CP 68020, 21941-590 Rio de Janeiro, RJ (Brazil) aut Rademaker Vitor 3. Laboratório de Biologia e Controle da Esquistossomose, Departamento de Medicina Tropical, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, CP 926, 21045-900 Rio de Janeiro, RJ (Brazil) aut Cerqueira Rui 4. Departamento de Ecologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, CP 68020, 21941-590 Rio de Janeiro, RJ (Brazil) aut Mammalia Walter de Gruyter 68/2-3(2004-10-01), 109-119 0025-1461 68:2-3<109 2004 68 mamm https://doi.org/10.1515/mamm.2004.012 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/mamm.2004.012 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gentile Rosana 1. Laboratório de Biologia e Controle da Esquistossomose, Departamento de Medicina Tropical, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, CP 926, 21045-900 Rio de Janeiro, RJ (Brazil) aut NATIONALLICENCE 700 1- Finotti Ricardo 2. Departamento de Ecologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, CP 68020, 21941-590 Rio de Janeiro, RJ (Brazil) aut NATIONALLICENCE 700 1- Rademaker Vitor 3. Laboratório de Biologia e Controle da Esquistossomose, Departamento de Medicina Tropical, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, CP 926, 21045-900 Rio de Janeiro, RJ (Brazil) aut NATIONALLICENCE 700 1- Cerqueira Rui 4. Departamento de Ecologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, CP 68020, 21941-590 Rio de Janeiro, RJ (Brazil) aut NATIONALLICENCE 773 0- Mammalia Walter de Gruyter 68/2-3(2004-10-01), 109-119 0025-1461 68:2-3<109 2004 68 mamm CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter