Data from: Top-down control by an aquatic invertebrate predator increases with temperature but does not depend on individual behavioural type

Variation in behavioural traits among individuals within a population can
have implications for food webs and ecosystems. Temperature change also
alters food web structure and function, but potential interactions between
warming and intraspecific behavioural variation are largely unexplored. We
aimed to test how increased temperature, individual activity level of a
predatory backswimmer (Anisops assimilis), and their interaction
influenced the strength of top-down control of zooplankton and
phytoplankton. We used stable isotopes to support our assumption that the
study population of A. assimilis is zooplanktivorous, and behavioural
trials to confirm that activity level is a repeatable trait. We
established freshwater microcosms to test for effects of warming,
backswimmer presence, and backswimmer behavioural type on zooplankton
density, zooplankton composition, and phytoplankton chlorophyll a.
Top-down control was present and was generally stronger at increased
temperature. There was no indication that predator behavioural type
influenced the strength of top-down control either on its own or
interactively with temperature. Predator behavioural type may not be
associated with ecologically important function in this species at the
temporal and spatial scales addressed in this study, but the links between
behaviour, temperature, and food web processes are worthy of broader
exploration.