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Dr Alan Channing

Hot spring environments and ecosystems through time
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Taupo Volcanic Zone, North Island, New Zealand

The Taupo Volcanic Zone (TVZ) of North Island New Zealand with distribution of active geothermal systems.
For original map and details of geothermal areas and plant conservation status visit Waikato region geothermal map

Orakei Korako Thermal Area

Partitioning of flora at Orakei Korako. Apparently barren vent pools and sinter aprons in centre of image pass laterally into raised ground with patchy thermal ground community with forest community beyond.

Clubmoss Lycopodiella cernua (low bright green plants in the foreground) and ??kanuka (Kunzea ericoides)?? growing on the margin of a run of stream at Orakei Korako.

Fimbristylis velata (a member of the Cyperaceae) in thermal run-off at Orakei Korako.
In New Zealand occurs occasionally at northern coastal and geothermal sites. Known from one geothermal site in the Waikato Region (also occurs at Lake Whangape in the Waikato Region).

Triglochin striata (arrow grass): In New Zealand, generally a coastal species which occasionally occurs inland. Known from at least six geothermal sites in the Waikato Region from the following geothermal fields; Waikite, Waiotapu, Ngatamariki, Reporoa, Ohaaki, and Waiarakei-Tauhara.

Arrow grass (Triglochin striata) at Waikite Valley.

Apodasmia similis (oioi) a member of the Restionaceae: In New Zealand occurs mostly in estuaries, salt-marshes, dunes, sandy flats and hollows. Inland populations include areas surrounding hot springs.