On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

Streetlight Traps

Streetlights with traps installed in Hagley Park, Christchurch for Experiment 1. High pressure sodium light on the left and 4000 K LED on the right. Transparent perspex traps that could be raised and lowered on a pulley from ground-level were installed on the streetlight poles. Non-toxic odourless sticky paste (Tanglefoot™) was painted on the traps, which captured insects flying around the lights. Traps were lowered and replaced each evening.