The dispersal of the earthworm Aporrectodea giardi responds faster to habitat quality than to cumulative use of habitat in experimental conditions

Abstract : The study of the spatial distribution of soil organisms is one of the key research areas for understanding soil functioning. However, we still know little about the role of dispersal in the distribution of soil organisms such as earthworms. Critically, the relative strength of the external factors that trigger dispersal movements has not been documented. In this work, we test the relative importance of habitat quality and the cumulative use of habitat as drivers of dispersal of an anecic earthworm (Aporrectodea giardi) by observing their dispersal rates over 1, 2, 4, 8, 16 and 32 days. The results suggest that cumulative dispersal rates were higher and reached a maximum value more rapidly when individuals were introduced into unsuitable rather than suitable soil. This suggests that earthworm dispersal responded more rapidly and this response was more pronounced with respect to the cumulative use of the habitat. It seemed that there were two types of dispersal: one triggered quickly to escape unsuitable conditions and another in response to a cumulative use of the habitat.
Type de document :
Article dans une revue
Applied Soil Ecology, Elsevier, 2013, 71, pp.45-47. 〈10.1016/j.apsoil.2013.05.009〉
Liste complète des métadonnées

https://hal-bioemco.ccsd.cnrs.fr/bioemco-00881362
Contributeur : Jérôme Mathieu <>
Soumis le : vendredi 8 novembre 2013 - 10:17:27
Dernière modification le : jeudi 11 janvier 2018 - 06:26:59

Identifiants

Citation

Jérôme Mathieu, Gael Caro, Thibaud Decaens, Jerome Mathieu. The dispersal of the earthworm Aporrectodea giardi responds faster to habitat quality than to cumulative use of habitat in experimental conditions. Applied Soil Ecology, Elsevier, 2013, 71, pp.45-47. 〈10.1016/j.apsoil.2013.05.009〉. 〈bioemco-00881362〉

Partager

Métriques

Consultations de la notice

151