Dataset for study Long-term changes in urban bird populations: correspondence of the trends between urban and rural areas

<p>Dataset used for a study &quot;Long-term changes in urban bird populations: correspondence of the trends between urban and rural areas&quot;</p> <p>Data structure:</p> <p>Type = type of environment (R - rural, U - urban)<br> POID = unique identifier of each census point across all transects<br> Transect = unique identifier of a transect (each contains 20 census points)<br> Point = unique identifier of a point within one transect<br> Year = year of the count<br> Species&nbsp;&nbsp; &nbsp;= scientific name of bird species<br> Count = number of birds counted</p> <p>Each species has its own datafile.</p>