Biodiversity 3 Forestry grassland Conservation 2 Ecosystems 2 biodiversity 2 temporal variation 2 Alpine grasslands 1 Alps 1 Annual dynamics 1 Arid regions 1 Atmospheric chemistry 1 Bavarian Alps 1 Biodiversity pattern 1 Biodiversity patterns 1 Birds 1 Breeding Bird Survey (BBS) 1 Breeding bird survey 1 CO 1 CO2 fertilization 1 Carbon dioxide 1 Central Alps 1 China 1 Deposition 1 Driving factors 1 Dynamic habitat index 1 Dynamic habitat indices 1 Ecological conservation 1 Ecological environments 1 Ecology 1