The population of Brown Hares in the Swiss lowland has been declining for years. In the St. Galler Rhine valley farmland has been ecologically improved with biodiversity promoting areas (BFF) since 1994 with the aim to promote the Brown Hare amongst other species. In this study, we compared the population trend of the Brown Hare with the increase of the BFFs, and also analysed the correlation of Brown Hare density with the proportions of BFF-types and semi-natural areas by means of a habitat model. Therefore a raster with 65 cells was laid over the study site. Since 1998, mainly extensively used meadows showing high ecological quality or including structures (bushes, uncut grass) were implemented and their percentage increased from 1,9 % in 2003 to 5,6 % in 2012. At the same time the Brown Hare population has grown significantly. The habitat model showed that the Brown Hare density in early spring nights was significantly positively correlated with the proportion of extensively used meadows with high ecological quality per cell. The improvement of meadows in the Swiss lowland towards high ecological quality and structural richness is thus a valuable startingpoint when promoting the Brown Hare.
A comparison of different methods of winter-wheat fertilisation with nitrogen showed that nitrogen surpluses can be significantly reduced by means of site-specific variable-rate nitrogen fertilisation.
Fabian Y., Roberti G., Jacot K., Gramlich A., Benz R., Szerencsits E., Churko G., Prasuhn V., Leifeld J., Zorn A., Walter T. (ꝉ), Herzog F.
Many tile drainage systems on arable land are in need of renewal. Cantons and stakeholders will now be given a decision-making tool enabling them to assess such areas in detail and to find sustainable solutions.
Ammonia emissions from the Swiss farming sector have scarcely declined over the past 20 years. This is because the factors leading to either an increase or decrease in emissions have for the most part cancelled each other out between 2000 and 2020.