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Statements

Subject Item
n2:RIV%2F60460709%3A41210%2F11%3A53158%21RIV12-MSM-41210___
rdf:type
n6:Vysledek skos:Concept
dcterms:description
A positive effect of (meta)population density on emigration has been predicted by many theoretical models and confirmed empirically in various organisms. However, in butterflies, the most popular species for dispersal studies, the evidence for its existence has so far been equivocal, with negative relationships between density and emigration being reported more frequently. We analysed dispersal in sympatric metapopulations of two Maculinea butterflies, intensively surveyed with mark–release–recapture methods for 7 years. Dispersal parameters, derived using the virtual migration model, were assessed against butterfly densities, which fluctuated strongly over the study period. Emigration was positively correlated with density, and this effect was particularly strong at densities above carrying capacity, when emigration increased up to threefold in females and twofold in males compared with the normal levels. In turn, density had little impact on other dispersal parameters analysed. A positive effect of (meta)population density on emigration has been predicted by many theoretical models and confirmed empirically in various organisms. However, in butterflies, the most popular species for dispersal studies, the evidence for its existence has so far been equivocal, with negative relationships between density and emigration being reported more frequently. We analysed dispersal in sympatric metapopulations of two Maculinea butterflies, intensively surveyed with mark–release–recapture methods for 7 years. Dispersal parameters, derived using the virtual migration model, were assessed against butterfly densities, which fluctuated strongly over the study period. Emigration was positively correlated with density, and this effect was particularly strong at densities above carrying capacity, when emigration increased up to threefold in females and twofold in males compared with the normal levels. In turn, density had little impact on other dispersal parameters analysed.
dcterms:title
Evidence for positive density-dependent emigration in butterfly metapopulations Evidence for positive density-dependent emigration in butterfly metapopulations
skos:prefLabel
Evidence for positive density-dependent emigration in butterfly metapopulations Evidence for positive density-dependent emigration in butterfly metapopulations
skos:notation
RIV/60460709:41210/11:53158!RIV12-MSM-41210___
n6:predkladatel
n7:orjk%3A41210
n3:aktivita
n17:S
n3:aktivity
S
n3:cisloPeriodika
3
n3:dodaniDat
n12:2012
n3:domaciTvurceVysledku
n16:7853580
n3:druhVysledku
n14:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
198447
n3:idVysledku
RIV/60460709:41210/11:53158
n3:jazykVysledku
n15:eng
n3:klicovaSlova
Carrying capacity, Dispersal, Maculinea, Mark–recapture, Virtual migration model
n3:klicoveSlovo
n5:Dispersal n5:Carrying%20capacity n5:Mark%E2%80%93recapture n5:Maculinea n5:Virtual%20migration%20model
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[AA04B949C210]
n3:nazevZdroje
Oecologia
n3:obor
n11:EG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
2
n3:rokUplatneniVysledku
n12:2011
n3:svazekPeriodika
167
n3:tvurceVysledku
Vrabec, Vladimír Nowicki, Piotr
n3:wos
000295984800007
s:issn
0029-8549
s:numberOfPages
9
n9:doi
10.1007/s00442-011-2025-x
n19:organizacniJednotka
41210