Faunal effects of shrub concentration

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1975

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Arthropods were sampled, throughout the year, from equal biomasses of shrubs (Baccharis hamilifblia L.) in high and low shrub concentration communities. These were natural communities whose dominant non-shrub plant species were similar and in approximately the same relative proportions. The shrubs in the high shrub concentration communities were found to harbor a significantly greater total number, biomass, and species richness of herbivorous insects per unit shrub biomass than those in the low. These same shrubs also contained a significantly greater total number, biomass, and species richness of arthropods per unit shrub biomass than those in the low shrub concentration communities.

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