Niche properties constrain occupancy but not abundance patterns of native and alien woody species across Hawaiian forests

This data set accompanies the manuscript titled "Niche properties constrain occupancy but not abundance patterns of native and alien woody species across Hawaiian forests" published in Journal of Vegetation Science.<br><b>Objective</b>: We examine abundance-occupancy relationships of native and alien woody plant species, and the role of niche properties and functional traits related to dispersal and competition in shaping occupancy and abundance patterns.<br><b>Data</b>: The data file is compiled for 64 native and alien woody species that occur across the Hawaiian archipelago.<br><b>Description of data</b>: <br><br>Scientific_name: scientific name of each woody species<br>Native_Status: either native or alien<br>FirstRecord: Year alien species first recorded in Hawai'i. NAs for native species.<br>WD: wood density, in g cm^-3. Includes imputed values; please consult Table S1 to see which values are imputed. <br><br>SeedMass_mg: seed mass in mg. Includes imputed values; please consult Table S1 to see which values are imputed<br>Height_m: Maximum height in m. No values are imputed. <br><br>Niche_breadth: Estimated as n-dimensional hypervolume, based on climatic and topographic variables. Only estimated for 58 of the 64 species.<br><br>Niche_position: Estimated as absolute value of the centroid of the n-dimensional hypervolume from the first dimension. Only estimated for 58 of the 64 species.<br><br> Island: Indicates island for which abundance and occupancy were estimated. <br><br>meanRelAbund: Mean relative abundance for each species per island. Values estimated from forest plots. <br><br>medRelAbund: Median relative abundance for each species per island. Values estimated from forest plots. <br><br>Rel_Occupancy: Relative occupancy per species per island. Estimated as the percentage of 32 km2 grid cells in which a species is present.