Taharoa data deficient shallow lakes survey May 2014

Report: TR 2014/64

Authors: Bruno David, Callum Bourke, Tracie Dean-Speirs, Mark Hamer, Adrian Jepson, Mike Lake, Steve Scothern, Patrick Whaley  (Waikato Regional Council) Thomas Emmitt, Tertia Thurley, Lucy Bridgman (Department of Conservation) Rohan Wells, Mary DeWinton, Aleki Taumoepeau (National Institute of Water and Atmospheric Research)

About this report

Eighteen out of 71 shallow lakes in the Waikato region have been defined as ‘data deficient’, meaning that there is insufficient information known about them to enable an effective classification for prioritising management efforts and interventions. In this multiagency (Waikato Regional Council, Department of Conservation and the National Institute of Water and Atmospheric research) study baseline physico-chemical, submerged plant and ecological information was collected for four of these lakes (Numiti, Rotoroa, Piopio, Rototapu) located on the west coast near Taharoa. Physico-chemical information included the collection of dissolved oxygen/temperature and depth profiles from each lake and standardised collection of information for lake clarity and nutrient concentrations. Biological information included fyke and minnow trapping for fish, observations and call recordings for birds, marginal terrestrial and aquatic plant assessments (Lake SPI) and littoral sweeps and water column hauls for aquatic invertebrates. Results for each lake are discussed including potential priorities for future management of these relatively remote dune lakes.

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Taharoa data deficient shallow lakes survey May 2014 [PDF, 3 MB]