Despite these efforts, biodiversity loss continued, as in most European countries. Two-thirds of freshwater fish, one out of three birds, and one out of four mammals are threatened, which is high by OECD standards. Habitat deterioration due to fragmentation, agriculture intensification and land abandonment has been the major driver of biodiversity loss. There are still few marine protected areas (MPAs) offshore but a significant part of the coastal waters (130 000 ha) has been included in the Natura 2000 network.