Data from: Search for top-down and bottom-up drivers of latitudinal trends in insect herbivory in oak trees in Europe

This file correspond to the dataset that has being used in the article
‘Search for top-down and bottom-up drivers of latitudinal trends in insect
herbivory in oak trees in Europe’ by Valdés-Correcher et al. 2020
published in Global Ecology and Biogeography. Variables included in the
dataset : Variable Detailed explanation of the variables Tree_ID
Identity given to each oak Partner_ID Identity given to each scientific
and school partner Partner type Type of partner as there were scientific
partners and also school partners Country Country where the oak was
sampled Latitude and Longitude Coordinates of the oak sampled Installation
Date where plasticine caterpillars were installed Survey The survey when
plasticine caterpillars were checked for predation activity Removal Date
when caterpillars were removed from the oak Caterpillars attacked by birds
Number of caterpillars that were attacked by birds in each survey
Caterpillars installed Total number of caterpillars installed in each oak
in each survey Leaf damage The percentage of leaf area that was consumed
   or mined by insect herbivores (averaged leaf damage
at the oak level) Incidence of leaf-miners The proportion of leaves with
leaf-mines Incidence of gall-inducers The proportion of leaves with galls
Miners.1 Number of leaves with mines Miners.0 Number of leaves without
mines Galls.1 Number of leaves with galls Galls.0 Number of leaves without
galls Year Year when oak was sampled Spring temperature (amj) The mean
temperature from April to June Spring Precipitation (amj) The mean
precipitation from April to June Circumference of the tree Circunference
of the oak at 1.30m Bird predation Ratio of % attacked caterpillars on
exposition period Lignin (mg g⁻¹ )   Condensed tannins (mg g⁻¹ )
  Hydrolysable tannins (mg g⁻¹ )   Flavonoids (mg g⁻¹ )
Leaf traits including leaf phenolics and nutritional traits Soluble sugar
(g L⁻¹)   Cellulose (g)   N:P ratio   C:N ratio