Prey selection in horned lizards following the invasion of Argentine ants in southern California

Article Abstract:

Research indicates that the Argentine ant, an invasive species, was not incorporated into the diet of coastal horned lizards upon introduction. Studies conducted on California horned lizard populations show that native ant displacement caused by Argentine ants resulted in the incorporation of non-ant arthropods in horned lizard diets, suggesting that invasive species should be closely monitored for negative effects on native population dynamics.

California, Food and nutrition, Predation (Biology), Ants, Horned toads, Horned lizards

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Invasion dynamics of Cytisus scoparius: a matrix model approach

Article Abstract:

A model is presented for plant population dynamics of Cytisus scoparius, or broom, across prairie and urban fields at various stages of invasion. Results suggest that control of C. scoparius invasions requires the destruction of 70% of seeds in urban landscapes and more than 99.9% of sees in prairie landscapes.

United States, Models, Shrubs, Vegetation dynamics, Broom (Plant), Plant populations

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