135512document50626Pierer_NutrCycl_Agroecosystems_2016.pdfapplication/pdf527e66113a83a9091bf095bea783a42eMD518821472016-04-18 11:27:49https://pure.iiasa.ac.at/id/eprint/12298/1/Pierer_NutrCycl_Agroecosystems_2016.pdf