Essay from the year 2012 in the subject Biology - Miscellaneous, grade: 2,7, Wageningen University (Fundamental and Applied Biology of Insects), course: Fundamental and Applied Biology of Insects, language: English, abstract: Grassland in Europe and other parts of our world offers many animals an appreciable biotope. Not only insects also spiders adopt this specific vegetation influenced by dry and poor soil as their habitat. In Europe the grassland disappears more and more. Many of these areas were under farmers hands and are left fallow nowadays. After a certain period it will happen that bigger herbals such as trees and bushes obtain the fallow area. In this essay a certain study case made from the Swedish University of Agricultural Science will show how grazers influence the diversity of insects. Grazers such as cattle, sheep and horses are introduced as mowing animals with the goal to avoid the growth of larger plants as trees and bushes.