Now showing items 1-5 of 7

  • Catchment land use and trophic state impacts on phytoplankton composition: a case study from the Rotorua lakes’ district, New Zealand

    Paul, Wendy J.; Hamilton, David P.; Ostrovsky, Ilia; Miller, Steven D.; Zhang, Austin; Muraoka, Kohji (Springer-Verlag, 2012)
    Trophic state of lakes has been related to catchment land use, but direct links between phytoplankton taxa and land use are limited. Phytoplankton composition, represented by relative cell abundance of phyla, was measured ...
  • Destratification – fact sheet

    Tempero, Grant Wayne; Paul, Wendy J. (Lake Ecosystem Restoration New Zealand (LERNZ), University of Waikato, 2015)
    During summer, the surface waters of lakes warm and become less dense than the colder bottom waters. This process is known as stratification and prevents surface and bottom water mixing. Stratification can occur intermittently ...
  • Flocculation and sediment capping – fact sheet

    Tempero, Grant Wayne; Paul, Wendy J. (Lake Ecosystem Restoration New Zealand (LERNZ), University of Waikato, 2015)
    Sediment capping and flocculation are in-lake techniques designed to reduce internal nutrient loads from the bottom sediments of lakes. These loads are roughly equivalent in magnitude to external loads. Case studies of the ...
  • Low-dose alum application trialled as a management tool for internal nutrient loads in Lake Okaro, New Zealand

    Paul, Wendy J.; Hamilton, David P.; Gibbs, Max M. (RSNZ Publishing, 2008)
    Aluminium sulfate (alum) was applied to Lake Okaro, a eutrophic New Zealand lake with recurrent cyanobacterial blooms, to evaluate its suitability for reducing trophic status and bloom frequency. The dose yielded 0.6 g ...
  • New Zealand Guidelines for cyanobacteria in recreational fresh waters: Interim Guidelines

    Wood, Susanna A.; Hamilton, David P.; Paul, Wendy J.; Safi, Karl A.; Williamson, Wendy M. (Ministry for the Environment, New Zealand, 2009)
    This document is divided into four main sections, plus 14 appendices. Section 1. Introduction provides an overview of the purpose and status of the document as well as advice on who should use it. Section 2. Framework ...