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Auteur S. Hartley |
Documents disponibles écrits par cet auteur (2)

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S. Hartley | 1998The chemical composition of galled and ungalled plant tissue was compared in a series of experiments. Gall and adjacent plant tissue was analysed for 20 species of gall-former on II different plant species. There were clear differences between g[...]![]()
article/chapitre/communication
I. Williams ; T. Jones ; S. Hartley | 20011. Both resources and natural enemies can influence the distribution of a herbivore. The ideal free distribution predicts that herbivores distribute themselves to optimise utilisation of resources. There is also evidence of herbivores seeking ou[...]