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| The study of cultural landscapes and, in particular, the areas of agricultural use is the subject of agricultural ecology. Ecologists for a long time confined to the study of landscape forms, which are less or not exposed to human. They explored the highlands, water, caves, swamps, dunes, deserts, grasslands, forests, tundra, and only recently became engaged in agricultural landscapes. It was believed that the fields, meadows and pastures in between hedgerows Farmers are only interested in diseases and pests of crop plants and to include in their studies, at best, yet direct enemies of pests. Therefore suggests itself to combine both of these areas and expand research on plant protection to the whole of science - ecology of agricultural land. The object of research in agricultural ecology may also be species, population or ecosystem. For each of these approaches are especially favorable conditions. Often it is a common plants and animals, biology and life demands that already have information from different geographical areas. On this basis it is possible to draw conclusions on the implementation of the physiological potential of the species in different environmental conditions. Often affected by outbreaks of pests, which for many species recorded already for a long time, so that the change in population density and approval in the life of these species can be studied particularly well. Finally, in the agricultural landscape are all transitions from relatively simple systems with few species-rich components to complex structures, which can serve as an example biocenoses shelter plantings or windbreaks. |