Spiders are dominant terrestrial predators that consume a large variety of prey and engage
in intraguild predation. Although the feeding habits of certain species are well known, the
trophic structure of spider assemblages still needs to be investigated. Stable isotope
analysis enables characterisation of trophic relationships between organisms because it
tracks the energy flow in food webs and indicates the average number of trophic transfers
between a given species and the base of the web, thus being a useful tool to estimate the …