Scale-dependent diversity patterns affect spider assemblages of two contrasting forest ecosystems
Created at: 2012-05-11
Initial title: Contrasting species richness and turnover, but similar hunting mode diversity of spiders in subtropical and temperate forests
Envisaged journal: Schuldt A, Assmann T, Schaefer M (2013) Scale-dependent diversity patterns affect spider assemblages of two contrasting forest ecosystems. Acta Oecologica: 10.1016/j.actao.2013.02.009
Envisaged date: 2013-02-11
. Spiders are important generalist predators in forests. However, differences in assemblage structure and diversity can have consequences for their functional impact and conservation approaches. Such differences are particularly evident across latitudes, which can be used to assess general patterns and region-specific characteristics of predator assemblages.
2. Here, we analyze the relationships between species, family and functional (foraging guild) richness as well as α- and β-components of epigeic spider diversity in semi-natural temperate and subtropical forests.
3. As expected, spider species and family richness were higher in subtropical plots. However, foraging guild richness at the plot level did not differ between regions, indicating that spider assemblages in both regions can take on similar functional roles independent of species richness.
4. While this might suggest higher functional redundancy among spiders in the subtropical plots, the observed patterns were caused by a much higher species turnover among these plots, potentially due to region-specific differences in the relative importance of local and regional filters that shape species assemblages.