Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 3
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Drastic population size change in two populations of the Golden-striped salamander over a forty year period - are eucalypt plantations to blame? 16
Arntzen, J.W..
Over the last half century the Iberian peninsula has seen the large scale planting of exotic gum trees (Eucalyptus sp.) therewith reducing space for native wildlife. An additional effect of the gum tree plantations may be the lowering of the water table in adjacent streams, to which amphibian species with a larval niche in the running sections of small streams would be especially susceptible. In northwestern Iberia that niche is occupied by the Golden-striped salamander, Chioglossa lusitanica. I here report on the demographic trends of two C. lusitanica populations over a forty year period, in two areas of one mountain range near Porto in northwestern Portugal. In both areas advantage was taken of the migration pattern of C. lusitanica to sites for...
Tipo: Article / Letter to the editor Palavras-chave: Amphibian decline; Chioglossa lusitanica; Demographic modelling; Gum tree; Iberia; Monoculture; Portugal; Urodela; Vortex; 42.82.
Ano: 2015 URL: http://www.repository.naturalis.nl/record/569285
Imagem não selecionada

Imprime registro no formato completo
Frogs Call at a Higher Pitch in Traffic Noise 7
Parris, Kirsten M; University of Melbourne; Australian Research Centre for Urban Ecology, Royal Botanic Gardens Melbourne; k.parris@unimelb.edu.au; Velik-Lord, Meah; University of Melbourne; meah@unimelb.edu.au; North, Joanne M. A.; University of Melbourne; fflojjo@yahoo.com.
Male frogs call to attract females for mating and to defend territories from rival males. Female frogs of some species prefer lower-pitched calls, which indicate larger, more experienced males. Acoustic interference occurs when background noise reduces the active distance or the distance over which an acoustic signal can be detected. Birds are known to call at a higher pitch or frequency in urban noise, decreasing acoustic interference from low-frequency noise. Using Bayesian linear regression, we investigated the effect of traffic noise on the pitch of advertisement calls in two species of frogs, the southern brown tree frog (Litoria ewingii) and the common eastern froglet (Crinia signifera). We found evidence that L. ewingii calls at a higher pitch in...
Tipo: Peer-Reviewed Reports Palavras-chave: Acoustic interference; Ambient noise; Amphibian decline; Animal behavior; Bioacoustics; Road ecology; Signal design; Traffic noise; Urban ecology; Vocal communication; Litoria ewingii; Crinia signifera.
Ano: 2009
Imagem não selecionada

Imprime registro no formato completo
Quantifying the Road-Effect Zone: Threshold Effects of a Motorway on Anuran Populations in Ontario, Canada 7
Eigenbrod, Felix; Geomatics and Landscape Ecology Research Laboratory, Department of Biology, Carleton University, Ottawa, Canada; felix.eigenbrod@gmail.com; Hecnar, Stephen J.; Department of Biology, Lakehead University, Thunder Bay, Ontario, Canada; shecnar@lakeheadu.ca; Fahrig, Lenore; Geomatics and Landscape Ecology Research Laboratory, Department of Biology, Carleton University, Ottawa, Ontario Canada; lfahrig@ccs.carleton.ca.
Tipo: Peer-Reviewed Reports Palavras-chave: Accessible habitat; Amphibian decline; Anuran populations; Ecological thresholds; Forests; Fragmentation; Habitat loss; Piecewise regression; Road ecology..
Ano: 2009
Registros recuperados: 3
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional