Scale-dependence of movement rates in stream invertebrates

Article Abstract:

The study of the scale-dependence of migration rates in stream invertebrates is conducted with the use of analytical models and random walk simulations in a one-dimensional habitat. Results reveal that the models and the published data on drift distances can be used to effectively calculate the expected scale-dependence of per capita emigration rates, under a wide range of environmental conditions.

Animal migration, Invertebrates

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The functional response of a predatory plant preying on swarming zooplankton

Article Abstract:

Research on predation relationships between Utricularia vulgaris, an aquatic carnivorous plant, and the cladoceran zooplankton Polyphemus pediculus shows that P. pediculus swarming accounts for lower predation at higher population densities, and for density dependent attack rate in U. vulgaris.

Sweden, Statistical Data Included, Models, Predation (Biology), Predation, Carnivorous plants

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Herbivory and plant resource competition: a review of two interacting interactions.

Article Abstract:

The prevalence and potential for interactive effects between herbivory and competition on plant growth and biomass is discussed. The mismatch between the spatial scale of herbivore behavior and the spatial heterogeneity of the plant community that give rise to interactive effects is examined.

Analysis, Plant communities, Growth (Plants), Plant growth, Herbivores

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