Rapid Biodiversity Assessment GRID Sampling Barrow, Northern Alaska, June/July 2008

This data set contains Rapid Biodiversity Sampling data from a GRID. It includes raw count data for 419 bird observations and 480 insect observations from 30 sampling plots in Barrow, Northern Alaska (app. 156.57717 longitude and 71.24467 latitude). All bird observations carry a radial distance from observer information and were collected according to DISTANCE Sampling point transects. Respectively, a DISTANCE trapping web protocol, allowing for detectability correction in abundance estimates, was applied for ground-living insects. Each plot was visited three times according to the PRESENCE software to obtain occupancy. These data have been data-mined by the author (Nemitz 2008) using RandomForest, Distance Sampling and PRESENCE. All species names are verified according to current ITIS taxonomy. A more detailed biological analysis is coming forward, and will be published elsewhere. Comparable Biodiversity GRID data so far is available for 5 other regions (Nicaragua, Central Alaska, Russian Far East, Papua New-Guinea, Costa Rica). Data from the other study sites are also available online. For details please contact authors.