UWIEHMS6

2785

15 janvier 2021 10:06

15 janvier 2021 10:06

Biodiversity in grassland is declining, i.e. because grassland use has been intensified. For example, excessive cutting prevents plants from flowering and pollinators such as butterflies no longer find enough food. In 2018, a field trial was set up to at two sites in south Germany to explore measures to improve biodiversity on the edges of intensively used meadows (min. four cuts per year). Here, five conservation strip variants are tested in 5-m-wide strips of min. 50 m length. These conservation strips are compared with the middle of the corresponding field, which is used intensively. The conservation strips have not been fertilised since 2019 and are used less frequently. Additionally, seed mixtures were sown in 2018 to increase the number of flowers. The results show that already in the first year in some cases the number of plant species was significantly higher in the conservation strips than in the middle of the intensively used meadows. However, there was no significant difference in the number of butterfly species.

None

• AB - Utile à l'AB
• FREDO environnement
• GEO Allemagne
• biodiversity
• flower strip
• grassland
• insect diversity
• species richness

807

10/2020

1 octobre 2020