CHR 501321 – Calothrix thermalis (Schwabe) Hansg.
Data provider:
Allan Herbarium
Barcode:
CHR 501321
Specimen type:
Sheet
Database record added:
17 October 1995
Database record updated:
24 February 2023
Components
Primary component
Active identification
Determined name:
Calothrix thermalis (Schwabe) Hansg.
Determiner:
Cassie U.V.
Identification date:
Preferred name:
Calothrix thermalis (Schwabe) Hansg.
Division:
Cyanoprokaryota
Class:
Cyanophyceae
Order:
Nostocales
Family:
Rivulariaceae
Identification type:
Determination
Collection events
Primary collection event
Collection event type:
Field
Standard locality
Location:
Waiotapu, Artist's Palette area
Georeferences:
Latitude and Longitude (WGS84):
-38.3414 176.357
Verbatim locality:
Waiotapu, Artist's Palette area.
Verbatim collector:
Cassie U.V., Hedenquist J.
Standardised collector:
Una V. Cassie Cooper; J. Hedenquist
Verbatim date:
12-MAY-1984
Start date:
1984-05-12
Land District:
South Auckland Land District
Country:
New Zealand
Native lands:
Ngāti Rangitihi
Ngāti Tahu / Ngāti Whaoa
Raukawa
Tūhourangi
Georeferences:
New Zealand Map Series 1:
N85 82- 79- (WGS84 -38.340209 176.363074)
New Zealand Map Series 260: U16 03- 12- (WGS84 -38.341434 176.356906)
Latitude and Longitude (WGS84): 38°20´ S 176°21.5´ E (WGS84 -38.333333 176.358333)
New Zealand Map Series 260: U16 03- 12- (WGS84 -38.341434 176.356906)
Latitude and Longitude (WGS84): 38°20´ S 176°21.5´ E (WGS84 -38.333333 176.358333)
Habitat:
Flat steps of silica terrace.
Notes:
U.V.C. 3119(15) Dark olive-green pockets of filamentous algae on flat steps (enclosed by semi-circular rings of silica) on 900 years old silica terrace - incipient new white terrace - grey over most of surface but dried out to a white near bottom. Pale grey filamentous structure on sloping faces of terrace steps are either porous silica or dead algal filaments or both.Living algae were growing beneath the surface cover of silica. Best grey algal growth had occurred in regions of greatest flow; but the filaments looked dead. Could there be a race between algal cell formation (i.e. Photosynthesis) and silica deposition? YES. Temperature: 26.5 degrees C, pH 6.5. In side flow channel, algae grow best in transition zone where rapid flow has ceased and Temp. has cooled off. Flats above is warmed slightly by spring water from below. "Artist's Palette": Orange, antimony, green/yellow, sulphur arsonic, grey sulphurous mud. "Champagne" pool overflowing on to terraces, is a crater formed by a steam explosion about 900yrs BP. Clay and blocky material of the area was ejected by the eruption. The "Terraces" cover 1.2 hectares; largest in N.Z. since 1886 Eruption. Sinter, about 50cm thick, 25cm thick near "Bridal Veil Falls", has been deposited over a period of 900 years. It contains (opaline, silica, arsenic, antimony, gold, silver, and other metals. At southern end of Terrace, black stream of algae cover cooler areas (20 degrees C) running in wavy lines about 0.5m wide from below wooden walk-ramp towards lower end of flat area. A salisified test of a chirononid larva was observed by J.Hedenquist.
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