Cynipid abundance at Petite Charnie, France, in 2008 and 2009

This dataset contains Cynipid gall abundance from an oak provenance trial at Petite Charnie in France. 2400 trees were sampled from 20 provenances of Quercus petraea and Quercus robur in 2008 and 2009. Cynipids have two gall generations each year so trees were sampled in spring (sexual generation) and autumn (asexual generation). 10 twigs were surveyed for galls on all parts of the terminal shoot (buds, leaves, stem, catkins) from each tree in spring and autumn. Counts were made for each species and generation.