Effects of competitive interactions and habitat structure on life-history traits and dispersal in land snails. [Thesis is based on the following papers]: I. Experimental evidence for intra- and interspecific competition in two species of rock-dwelling land snails ; II. Intra- and interspecific influences on age at first reproduction and fecundity in the land snail Balea perversa ; III. Reponses in growth, reproduction and life span to reduced competition pressure in the land snail Balea perversa; IV. Effects of food availability and intra-and interspecific interaction on the dispersal tendency in the land snail Chondrina clienta ; V. Are roads barriers to dispersal in the land snail Arianta arbustorum ?; VI. Effect of habitat form on dispersal in the land snail Arianta arbustorum ; VII. Influence of life-history traits on range expansion of a land snail population: a simulation model; VIII. Reduced reproductive compatibility in the land snail Arianta arbustorum from distant populations / by Bruno Bauer & Anette Baur

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