Exclusion and removal of pest fish from Lake Ohinewai – fact sheet
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Tempero, G. W., Ling, N., & Daniel, A. J. (2015). Exclusion and removal of pest fish from Lake Ohinewai – fact sheet. Hamilton, New Zealand: Lake Ecosystem Restoration New Zealand (LERNZ), University of Waikato.
Permanent Research Commons link: https://hdl.handle.net/10289/9722
Many of the shallow lakes in the lower Waikato River floodplain have significantly degraded water quality as a result of nutrient and sediment enrichment from non-point sources. Pest fish species such as koi carp, goldfish, and catfish have exacerbated lake decline by resuspending lake sediments and uprooting submerged macrophytes. This this resulted in a collapse of submerged macrophytes and progression from clear-water oligotrophic state to a eutrophic (algal-dominated) state.
Lake Ecosystem Restoration New Zealand (LERNZ), University of Waikato