Schwellenwerte, Umwelt, Politik, Nachhaltigkeit, Gesundheit, Fischerei, Wasserqualität, Wasservorkommen, Landnutzung, Bodenerosion, endliche Ressourcen, Europa, Studie ###>tresholds, environment, tipping point, policy, sustainability, health, fisheries, water quality, water quantity, land use, soil degradation, non-renewable resources, Europe, study