Wetland bird estimates before and after wetland restorations in agricultural landscapes, Sweden

The purpose of this data was to evaluate and quantify wetland restoration efficiency for a scientific paper. The data contains pair counts of wetland bird species in wetlands that have been restored. The observations include time series, including Before and After wetland restoration. The data has been compiled from various published reports. Data: data contains bird pair abundance data in created wetlands in Swedish agricultural landscapes. Data collection description: Data from various published reports have been compiled into one dataset. The data contains bird species observations in wetlands that have been restored in the past 50 years. The bird surveys include mainly the estimates of bird pair abundances before and after restoration, but occasionally broods were estimated. The data also include wetland areas, year of restoration and inventory, as well as references to the original reports that reported the bird numbers, but here they are compiled into one data set. The variables are described in detail in the documentation file.