… leaf damage, and long term exposure affects growth and crop yield. Thresholds, target values and long-term objectives An information threshold of 180 µg/m 3 and an alert threshold of 240 µg/m 3 applies for ozone concentration in ambient air. As target value for the protection of human health, a maximum daily 8-hour mean of 120 … leaf damage, and long term exposure affects growth and crop yield. Thresholds, target values and long-term objectives An information threshold of 180 µg/m 3 and an …

… Water law has been shaped by Europe since the mid-1970s. Numerous EU directives set targets and procedures for water management. These must be transposed into national …