Monitoring Insect Diversity

Insect Diversity in Viticulture - Influence of Management and Landscape

In this research project, the influence of different forms of management and near-natural habitat structures in the vicinity of vineyards on biodiversity was investigated. As DNA metabarcoding experts, we were commissioned to record the species diversity and species composition of insects living in vineyards.

Proportion of Near-Natural Habitats as Central Factor

The impressive results of the study show that landscape structure has a decisive influence on insect diversity in viticulture. With an increasing proportion of near-natural habitats such as wooded areas, hedgerows or wildflower meadows, species diversity increases significantly, while the type of cultivation has a lesser influence on biodiversity. With this knowledge, winegrowers can take targeted measures to promote biodiversity and design their vineyards accordingly.

DNA Metabarcoding as a Useful Tool

Thanks to DNA metabarcoding, we were not only able to estimate species diversity and species composition in viticulture, but also to identify relevant species. In particular, knowledge about the presence of pests and beneficial insects on cultivated land is of central importance for viticulture. For example, analysis of DNA sequences has identified heat-loving species that spread northward from the Mediterranean region, as well as other introduced species that affect viticulture. These findings are of great value for making informed decisions for long-term monitoring and sustainable management.

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