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A Simple Planting Technique for Re-establishing Trees Where Frequent Inundation Occurs

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Published on: January 26, 2018

Quality over quantity: buffer strips can be improved with select native plant species.

K A Gill¹, R Cox, M E O'Neal

¹Department of Entomology, Iowa State University, Ames, IA 50011, USA.

Environmental Entomology

|April 26, 2014

Summary

Buffer strips with diverse native plants attract more beneficial insects. Optimizing plant selection, even with modest diversity, enhances insect biodiversity and ecosystem services.

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Area of Science:

Ecology
Entomology
Conservation Biology

Background:

Buffer strips are important for biodiversity and ecosystem services.
Current buffer strip plant compositions may not be optimal for beneficial insects.

Purpose of the Study:

To assess the impact of plant diversity in buffer strips on beneficial insect communities.
To compare the effectiveness of different plant community compositions for attracting beneficial insects.

Main Methods:

Conducted a 2-year field experiment with nine buffer strips varying in plant diversity.
Compared insect communities in buffers with single species, prairie reconstruction species, and beneficial insect-attracting species.
Measured insect diversity, abundance, and relationship with plant diversity and floral resources.

Main Results:

A positive relationship was observed between plant community diversity, flower abundance, and beneficial insect diversity/abundance.
Buffers with species selected for insect attraction yielded more beneficial insects than prairie reconstruction communities.
Single-species buffers had the lowest beneficial insect diversity and abundance.

Conclusions:

Plant communities in existing buffers are often suboptimal for beneficial insects.
Incorporating diverse, flowering perennial native species can enhance buffer strips as beneficial insect habitat.
Optimizing buffer strips requires intentional selection of attractive native species, even at lower diversity levels.
Prairie reconstruction plant communities may lack optimal species or densities for supporting diverse beneficial insects.