Kawerau Wastewater Ponds
The Kawerau Pulp and Paper Mill in the eastern Bay of Plenty uses a large network of wastewater ponds to treat water used in the paper making process before discharging it to a local river.
These wastewater treatment ponds were the site of a large scale habitat restoration project to improve the ecological condition of the area, but no natural resource information was available to plan and deliver the project.
As the project site was largely a wilderness area there were no details about the distribution and abundance of wildlife across the site.
Collecting this information provided an important baseline to identify and record the resident wildlife that inhabited the site. This data informed decisions about priorities for habitat restoration and a fauna survey also provided a measure against which future changes in wildlife could be understood.
We undertook a systematic and quantitative survey of bird populations to map the distribution and record the abundance of birds in the project area.
This was carried out using standard census techniques along fixed transect lines so the results could be replicated in the future and the data would be comparable to the baseline information.
Introduced mammals were also identified and their abundance was indexed using standard trapping techniques. Three different trapping networks using different traps were deployed to identify the range of species suspected to be resident on the site.