Annual dynamics 1 Biodiversity 1 Biodiversity pattern 1 Biodiversity patterns 1 Birds 1 Breeding Bird Survey (BBS) 1 Breeding bird survey Conservation 1 Dynamic habitat index 1 Dynamic habitat indices 1 Ecosystems 1 Forestry 1 Gross Domestic Product 1 Gross primary productivity 1 Image resolution 1 Indicator indicator 1 Lag effects 1 Lag-effect 1 MODIS 1 Radiometers 1 Resolution 1 Species richness 1 Species-energy theory 1 Surveys 1 USA 1 United States 1 annual variation 1 biodiversity 1 bird 1 grassland 1