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Detecting cyanobacteria in sediment cores

Cyanobacteria are present in all lakes, but when conditions are favorable they can multiply (bloom) and take over the lake ecosystem, especially in the summer. We can see this change in cyanobacteria over time by studying their remnants in lake sediment cores,. Pigments produced by the cyanobacteria have been studied for decades, while more recent methods target DNA from cyanobacteria directly. Both techniques can inform us about historical levels of cyanobacteria, and whether they used to be as high as they are now… BUT there are pro’s and con’s of both methods.

To learn more, see the latest paper by Maïlys Picard and colleagues, “Molecular and Pigment Analyses Provide Comparative Results When Reconstructing Historic Cyanobacterial Abundances from Lake Sediment Cores”, published in Microorganisms last week!

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Something in the water

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Lakes Appreciation Month – What do we value about our lakes?

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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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Lake Areare

North of Hamilton

Waikato

Lake Pupuke

Takapuna, Northshore

Auckland

Lake Bright

Fiordland National Park

Southland

Duncan Stream Tarn 3

West of Lake Pukaki

Canterbury

Lake Emily

Ashburton

Canterbury

Lake Grasmere / Ōpōreaiti

Arthurs Pass

Canterbury

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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
  • Social Science
  • 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
  • Results
  • Glossary