Abundance of Zelandopsyche ingens, 2002-4, after experimental manipulation

We conducted a replicated density perturbation experiment to manipulate late instar larvae of nine populations of a stream caddisfly, Zelandopsyche ingens, and measured the resulting abundance of the next generation over two years covering the complete lifecycle of one cohort to evaluate influences on their population dynamics. Two datasets are included that cover Z. ingens abundance at (a) the manipulation and (b) patterns of the generation after the manipulation. The locations of the streams used around the University of Canterbury's Cass Mountain Research Field Station in the upper Waimakariri River catchment, New Zealand are described in a map and table in the associated publication.<br>