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The Lakes380 team heads north to Auckland

By Rose Gregersen, PhD student, Auckland University

Lake Tomorata

The third installment of Lakes380 field sampling brought the team to Auckland’s dune lakes.

First up was and environmental DNA survey at Tomarata Lake, which lies on the edge of Mangawhai forest. Being away from laboratory facilities can be difficult, but the team is comprised of well-experienced problem solvers, and an improvised motel laboratory was quickly constructed and day one ended with a late night of sample processing.

Day two we returned to Tomarata to collect sediment cores and water quality samples. Close by Lake Spectacle was next on our list. Getting stuck in the mud here  tested our four-wheel drive capabilities (or should I say, our ability to read rental car manuals, how many scientists do you think it takes to switch over to four-wheel drive?).

We cruised through day three at the beautiful Lake Kareta in South Head; smooth sailing credited to the fantastic facilities, company, and kai provided by Ed and Nicole Donald who are passionate about the future of this lake.

Captions (clockwise): Rose field sampling. The ATV loaded and ready for the sand dune trip. Sampling Lake Wainamu. Susie and Andrew work late into the night filtering eDNA samples (but remain happy).

After refreshing our forestry safety protocols on the morning of day four, we headed further up South Head to sample in the footsteps of Kawheru the giant; lakes Rototoa and Kuwakatai. Rototoa lived up to its namesake of “strong lake”, challenging us to a tug of war over the first core. It seems our determination convinced the lake to return the corer with core intact, along with what felt like permission to continue sampling. After Rototoa we ventured into the forest to peaceful Lake Kuwakatai. Unable to launch the motor boat, we paddled the raft out managing to complete all our sampling from one vessel.

The final day took us south to Lake Wainamu, a unique lake surrounded by beautiful native bush and towering black sand dunes. Access to the lake would have been impossible without the expert ATV dune driving skills of Harry from Auckland council. With help from Kevin Simon (Auckland University) and Matt Bloxham (Auckland Council) we sampling and pack down went super smoothly and was the perfect to end a successful trip.

Left: Sampling team with Harry and Matt (Auckland Council) at Lake Wainamu. Right: Sampling team with Ed and Nicole Donald at Lake Kareta.

One of the really fantastic aspects of this project is meeting and talking with members of the community, people who are passionate about the health of Aotearoa’s lakes. There are some stories lake sediment cannot tell.

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Sampling for fish eDNA in lakes

Check out these new eDNA posters! eDNA is an ama Check out these new eDNA posters! 

eDNA is an amazing new tool that can help us understand and protect the taiao (environment) - but it can't do everything. It needs to be used to complement other techniques and aligned with Indigenous and local knowledge. These new posters highlight these benefits and provide suggestions on some questions to ask before launching into an eDNA based project!

Email us for a high resolution PDF that you can print out. eDNA@cawthron.org.nz

When working with eDNA projects we like to co-design the project with our partners. We also love sharing our knowledge and helping train the next generation of scientists to become sentinels of the taiao.

#lake #eDNA #ecology #molecularecology #freshwater #lakes380 #cawthron #gnsscience #instaScience⁠ #NZscience
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About

  • The Project
  • The Science
    • Field Sampling
    • Laboratory Analysis
    • Student Projects
  • Science Aims
  • Rohe Studies
    • Rangitīkei Iwi Rohe Study
    • Wairarapa Moana iwi rohe study
  • Virtual Experience
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  • Iwi Relationships
  • The Team
    • Lakes380 Team
    • Advisory Groups
    • Lakes380 Co-lead Institutes​
    • National Collaborators
    • International Collaborators
  • Partners

Resources

  • Contact & Links
  • Blog, News & Publications
  • Video Gallery
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