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Name File Type Size Last Modified
0_prep_data.do 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
2_prep_analysis_data.do text/x-stata-syntax 19.4 KB 09/02/2020 07:48:AM
3_master.do text/x-stata-syntax 10.8 KB 10/29/2020 06:49:PM
4_appendix.do 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
README.docx application/vnd.openxmlformats-officedocument.wordprocessingml.document 16.7 KB 11/02/2020 07:12:AM
functions.do text/x-stata-syntax 3.9 KB 10/29/2020 10:12:AM
nbp.xlsx application/vnd.openxmlformats-officedocument.spreadsheetml.sheet 10.4 KB 10/30/2020 08:13:AM
  processed_data 11/02/2020 10:56:AM
r_packages.png image/png 122 KB 09/01/2020 01:56:PM
trend.xlsx application/vnd.openxmlformats-officedocument.spreadsheetml.sheet 17.5 KB 11/01/2020 04:44:PM
    Total of 15 records. Records per page

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. https://doi.org/10.3886/E125422V2

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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