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Patterns of density dependence in growth, reproduction and survival are important for predicting the population dynamics of a species. The patterns may change with environmental factors, such as the harshness of winter, but very little is known about such patterns and their mechanisms in unmanipulated natural populations of invasive animal species.We studied the extent of density dependence in the...
Hydrilla verticillata (Hydrocharitaceae) is an exotic invasive macrophyte that has caused severe ecological and economic damage worldwide. H. verticillata has invaded the main channel of the river in the Upper Paraná River floodplain (Brazil), but it has not become established in floodplain lakes. Although some abiotic factors have been shown to affect the success of H. verticillata invasions,...
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