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On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

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NIWA

Java tsunami - 08 04
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Rohan Wells

Endemic quillworts have spiky appearance, grow to 0.3 m tall, and reproduce by spores in the leaf base (Photo: Rohan Wells)
Rohan Wells; Trevor James, AgResearch

Endemic quillworts have spiky appearance, grow to 0.3 m tall, and reproduce by spores (see arrow) in the leaf base (Photo: Trevor James, AgResearch).
John Clayton

Quillworts collected from across a depth range at a site give fine scale information on genetic variation within lake populations (Photo: John Clayton).
Deborah Hofstra

In RAPDs the DNA components are separated within a gel and patterns in band presence (see arrow) indicate genetic relatedness (Photo: Deborah Hofstra).
Quillworts from lakes of different regions show geographic patterns of relatedness based on the RAPDs method of genetic analyses. More genetically similar populations occur on shorter 'branches'.
P. de lange

Lake Rotomanuka North (photo by P. de Lange)
P. de Lange

Lake Rotopiko (Serpentine) North (photo by P. de Lange)
M. De Winton

Charophyte oospores ('seed'). (Photo: M. De Winton)
R. Wells

John Clayton samples a luxuriant carpet of bryophytes at 20 m depth in Lake Rotoroa, Nelson. (Photo: R. Wells)
R. Wells

Bryophyte community at 20-m depth in Lake Rotoroa. (Photo: R. Wells)
R. Wells

Mary de Winton retrieves a sample of bryophytes from 40- m depth in Lake Wakatipu. (Photo: R. Wells)
M. de Winton

Some moss species found deep within lakes, including one with minute, scale-like leaves. (Photos: M. de Winton).
J. Clayton

Streams draining to Lake Wakatipu had rich communities of bryophytes, one likely source of the deep-water assemblage (Photo: J. Clayton)
R. Wells

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