Tree species diversity influences herbivore abundance and damage: meta-analysis of long-term forest experiments Vehviläinen, Harri ; Koricheva, Julia ; Ruohomäki, Kai Abstract Publication: Oecologia Pub Date: May 2007 DOI: 10.1007/s00442-007-0673-7 Bibcode: 2007Oecol.152..287V