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Name File Type Size Last Modified
  processed_data 11/02/2020 10:56:AM text/x-stata-syntax 4.4 KB 11/02/2020 05:33:AM
1_1_clean_birds_data.R text/x-r-syntax 4.4 KB 09/01/2020 11:59:AM
1_2_clean_species_data.R text/x-r-syntax 5.6 KB 09/02/2020 07:48:AM
1_3_clean_bird_mass_data.R text/x-r-syntax 4.2 KB 09/02/2020 07:48:AM
1_4_clean_selected_species.R text/x-r-syntax 3.8 KB 09/02/2020 07:48:AM text/x-stata-syntax 19.4 KB 09/02/2020 07:48:AM text/x-stata-syntax 10.8 KB 10/29/2020 06:49:PM text/x-stata-syntax 12.7 KB 10/29/2020 06:40:PM
5_plot_map.R text/x-r-syntax 17.2 KB 10/29/2020 06:38:PM

Project Citation: 

Liang, Yuanning, Rudik, Ivan, Zou, Eric, Johnston, Alison, Rodewald, Amanda, and Kling, Catherine. Data and Code for: Conservation co-benefits from air pollution regulation: Evidence from birds. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2020-11-02.

Project Description

Summary:  View help for Summary Understanding the drivers of abundance and biodiversity decline across numerous taxa is imperative for designing conservation policy. We use highly detailed citizen science data to show that there is a strong, robust negative association between bird abundance and ambient ozone concentrations in the United States. In particular, we find that a regulation aimed at reducing ozone precursors has significantly bolstered populations in the eastern US. Our estimated effects suggest that the large decline in average United States ozone concentrations over the past several decades has averted the loss of potentially billions of birds. Environmental policies nominally aimed at humans can also provide substantial benefits to other species.

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