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animal migration(4)
foraging(4)
magnetic reconnection(4)
magnetopause(4)
population density(4)
biomass (ecology)(3)
carbon sequestration(3)
ecosystems(3)
el niño-southern oscillation(3)
forecasting(3)
forests(3)
land use(3)
mars(3)
seasons(3)
urban areas(3)
agricultural soil science(2)
animal sexual behavior(2)
aurora(2)
birds(2)
conservation science(2)
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