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Titolo:
Geographical and genetic distances among zooplankton populations in a set of interconnected ponds: a plea for using GIS modelling of the effective geographical distance
Autore:
Michels, E; Cottenie, K; Neys, L; De Gelas, K; Coppin, P; De Meester, L;
Indirizzi:
Katholieke Univ Leuven, Aquat Ecol Lab, B-3000 Louvain, Belgium KatholiekeUniv Leuven Louvain Belgium B-3000 b, B-3000 Louvain, Belgium Katholieke Univ Leuven, Lab Forest Nat & Landscape Res, B-3000 Louvain, Belgium Katholieke Univ Leuven Louvain Belgium B-3000 s, B-3000 Louvain, Belgium
Titolo Testata:
MOLECULAR ECOLOGY
fascicolo: 8, volume: 10, anno: 2001,
pagine: 1929 - 1938
SICI:
0962-1083(200108)10:8<1929:GAGDAZ>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
HABITAT CONNECTIVITY; NATURAL-POPULATIONS; DISPERSAL; FLOW; LANDSCAPE; DAPHNIA; DYNAMICS;
Keywords:
allozymes; connectivity; dispersal; genetic differentiation; GIS; landscape ecology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
57
Recensione:
Indirizzi per estratti:
Indirizzo: Michels, E Katholieke Univ Leuven, Aquat Ecol Lab, Ch de Beriotstr 32, B-3000 Louvain, Belgium Katholieke Univ Leuven Ch de Beriotstr 32 Louvain Belgium B-3000
Citazione:
E. Michels et al., "Geographical and genetic distances among zooplankton populations in a set of interconnected ponds: a plea for using GIS modelling of the effective geographical distance", MOL ECOL, 10(8), 2001, pp. 1929-1938

Abstract

In systems of interconnected ponds or lakes, the dispersal of zooplankton may be mediated by the active population component, with rivulets and overflows functioning as dispersal pathways. Using a landscape-based approach, we modelled the effective geographical distance among a set of interconnected ponds (De Maten, Genk, Belgium) in a Geographic Information System (GIS) environment. The first model (the Landscape Model; LM) corrects for the presence of direct connections among ponds and was based on the existing landscape structure (i.e. network of connecting elements among ponds, travellingdistance and direction of the current). A second model (the Flow Rate Model; FRM) also incorporated field data on flow rates in the connecting elements as the driving force for the passive dispersal of the active zooplanktonpopulation component. Finally, the third model (the Dispersal Rate Model; DRM) incorporated field data on zooplankton dispersal rates. An analysis ofthe pattern of genetic differentiation among Daphnia ambigua populations inhabiting 10 ponds in the pond complex reveals that the effective geographical distance as modelled by the flow rate and the dispersal rate model provide a better approximation of the true rates of genetic exchange among populations than mere Euclidean geographical distances or the landscape model that takes into account solely the presence of physical connections.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 06:55:56