Differences in habitat quality explain nestedness in a land snail meta-community

Article Abstract:

The study tested whether litter-dwelling land snails in boreal riparian forest exhibited a nested community structure, and whether such a pattern was related to differences in environmental variables among sites. Analyses of nestedness are seldom performed on equal sized plots, and the study shows the importance of understanding that variation in environmental variables among sites can result in nested communities.

Environmental aspects, Snails, Taigas, Taiga

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Resources, habitats and metapopulations- whither reality?

Article Abstract:

Most metapopulation models and tests of model components are developed using species where adult and larval resources are potentially coincident. It is suggested that there is a level of complexity to resource distribution that was overlooked in spatial population modelling of butterflies, both within habitats and at the landscape scale.

Growth, Butterflies, Animal ecology, Company growth

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Changes in sexual selection resulting from novel habitat use in the sand goby

Article Abstract:

The availability and size distribution of nest sites and their consequences for their habitat preference, fish distributions and the breeding system in sand gobies breeding in two different habitats are compared. The larger average size of nests on rocky bottoms explains the habitat-related differences.

Fish populations, Animal breeds

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