Top down or bottom up? Feasibility of water clarity restoration in the lower Karori Reservoir by fish removal

Hicks, Brendan J.; Hamilton, David P.; Ling, Nicholas; Wood, Susanna A.

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cber.bio.waikato.ac.nz

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Hicks, B. J., Hamilton, D., Ling, N. & Wood, S. (2007). Top down or bottom up? Feasibility of water clarity restoration in the lower Karori Reservoir by fish removal. CBER Contract Report No. 70, report prepared for the Karori Wildlife Sanctuary Trust. Hamilton, New Zealand: Centre for Biodiversity and Ecology Research, Department of Biological Sciences, School of Science and Engineering, The University of Waikato.

Permanent Research Commons link: https://hdl.handle.net/10289/3794

Abstract

As part of an overall ecosystem assessment of lower Karori Reservoir Sabctuary, Wellington, a number of variables are being monitored routinely, including temperature, nutrients, and phytoplankton and zooplankton populations. Ammonium (NH₄) tends to be the dominant species of inorganic nitrogen most of the time except in late winter when nitrate (NO₃) becomes dominant. Total nitrogen concentrations place Karori Sancturay in a mesotrophic to eutrophic category.

Date

2007

Type

Commissioned Report for External Body

Series

CBER Contract Report

Report No.

No.70

Collections

Science and Engineering Papers [2559]