Martin Zobel, Rüdiger Otto, Lauri Laanisto, Agustín Naranjo-Cigala, Meelis Pärtel andJosé María Fernández-Palacios (2011) The formation of species pools: historical habitat abundance affects current local diversityGlobal Ecology and Biogeography 20 (2): 251259. http://onlinelibrary.wiley.com/doi/10.1111/j.1466-8238.2010.00593.x/abstract