Development of the natural biodiversity on the experimental station of the Trenthorst estates since conversion towards organic farming in 2001
The protection and development of the natural biodiversity is one of the principle goals of organic farming. The development of organic agriculture must consider these goals.
The research focus on system comparison at the location of the estate Trenthorst in Schleswig-Holstein (Germany): organic versus conventional as well as different types of organic: with and without livestock or low or high intensity of production. The research does assess the impact of the farming system development on natural biodiversity.
After conversion towards organic farming in 2001 the entire estate of 600 ha (340 arable land, 130 ha permanent grassland, 80 ha forest, 50 ha miscellaneous) was assessed to check the status of the biodiversity. Main species groups as segetal and grassland flora, ground beetles, ground spiders, birds, hares, deers (farm land species), earth worms, collembolae (soil species) as well as zoobentos, amphibia (water species) are monitored in non-regular periods and the impact of the farming system developement assessed.
In the last years the number of studies concerning organic farming and biodiversity has expanded significantly. A total of 343 papers with 396 citations (83 %) came to the conclusion, that organic farming shows for more biodiversity compared with conventional farming.
Nevertheless, it was not clear from these studies, what are the reasons and what will happen in the case of changing the organic system (more intensive, changing crop rotation and management system, more or less livestock)?
How does develop the segetal and grassland flora?
1.2001 - 12.2020
Project status: ongoing