Journal Article
Modelling the time course of shade, temperature, and wood recovery in streams with riparian forest restoration
Robert J. Davies‐Colley; Mark A. Meleason; Raeme M.J. Hall; J. Christopher Rutherford
New Zealand Journal of Marine and Freshwater Research · Vol. 43, Issue 3 · pp. 673-688 · 2009
Abstract
Action is increasingly being taken in New Zealand and elsewhere to restore ecological function to streams through planting of riparian zones. We used simulation modelling to explore the relative performance of three strategies to restore the riparian zone of a pastoral stream to native forest by: (1) passive regeneration; (2) planting then abandonment of a Pinus radiata plantation; and (3) active restoration by planting selected native trees. We linked the forest model LINKNZ with a shade and temperature model (sWAIORA), and a wood model (OSU_STREAMWOOD) to simulate recovery trajectories for key forest stream attributes in hypothetical streams (1.3–14.0 m channel width) in the central North Island, New Zealand. Both active restoration strategies outperformed passive regeneration in shade, temperature and stream wood volume for most of the simulation time (800 years). Although the abandoned pine plantation provided greatest shade initially (