Five replicate quantitative periphyton samples (415 mm2) were collected from the edge and mid-stream in a riffle of the Patea River. Water depth 0.3-0.8 m at time of sampling. The samples were pooled for taxonomic analysis. The objective was to characterise periphyton biomass and community composition at the site, which was below the Patea Dam and experienced low levels of dissolved oxygen. Note that the exact day of sampling is unknown.

Biodiversity of springs and rock seepages 2003

Massey Periphyton 2003 These samples were collected by Massey University from Horizons Regional Council river monitoring sites. NIWA analysed the samples.

Periphyton was sampled from Canavans Creek, Franz Josef, as part of an EEA for potential realignment works for this small creek if a stop babnk were to be built. Four sites were selected, and periphyton collected non-quantitatively by scraping rocks. Relative abundances were assessed by coded abundance.

Periphyton samples were collected from landslide lakes in the Mokihinui, Karamea and Young (Otago) catchments, to allow an assessment of the likely periphyton communities in the reservoir formed by the proposed Mokihinui hydroelectric dam. Data from up to three replicate samples at each site have been merged to give overall taxa relative abundances (%).

Periphyton samples were collected from two sites on Waianiwaniwa River upstream and downstream of the site of a proposed landfill, as part of an environmental assessment. Six - 10 quantitative samples were collected (rock scrapes) from each site on 1 December 1999, and analysed for biomass. Community composition was determined from a pooled sample of upstream and downstream locations at each site.

Periphyton samples were collected from over 20 stream sites in four catchments east of Te Anau, which were potentially affected by a proposed monorail to take tourist traffic from the Mararoa River to Te Anau Downs. Samples comprised 3 - 4 subsamples, pooled, at each site.

Pooled periphyton samples were analysed for species relative abundance (assessed on a scale of 1 to 8, converted to 1 - 5 for this database) from 29 sites in the Otago Region, in summer 2003. This was part of the annual SOE monitoring.

Periphyton samples were collected from small tributaries and rock seepages in the Mokihinui Gorge withinthe area that would be inundated by the reservoir formed by the proposed Mokihinui hydroelectric dam. For comparison, samples were also collected from similar habitats in the Mokihinui catchment outside the affected area, and from the Karamea, a neighbouring catchment. Community composition was determined for up to three samples at each site, covering a range of habitats (i.e. habitats were kept separate).

Diatoms from 20 ponds on Bealey Spur, all collected on 24/08/2001