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New article published! A DNA-based tool to monitor and detect kākahi

A team of Lakes380 team researchers led by Konstanze Steiner have developed a new DNA-based tool to assist with detecting and monitoring kākahi (freshwater mussel) in lakes and rivers.

There are three species of kākahi (freshwater mussel) found in lakes and rivers in Aotearoa-New Zealand. As filter-feeders, they play a crucial role in freshwater ecosystems and have high cultural importance.

The new DNA-based method allows us to detect and distinguish these species in water and sediment samples. It will provide new data to complement the traditional approaches to monitoring which have included dive surveys. While dive surveys are extremely valuable, they are time consuming and expensive meaning we can’t monitor as many waterbodies as we need to. The new DNA tool has already proved to be a very valuable method for large scale screening, and the team is now applying the method to sediment core samples to track historical populations.

You can read the publication for free here.

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Congratulations Jamie Howarth

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New manuscript on Rototoa (Auckland)

New manuscript on Lake Rototoa in Auckland has bee New manuscript on Lake Rototoa in Auckland has been published!!

A new manuscript titled - Resolving 500 years of anthropogenic impacts in a mesotrophic lake: Nutrients outweigh other drivers of lake change - led by Dr Rose Gregersen (Victoria University of Wellington) has been published in the prestigious journal Environmental Science & Technology.

The research explores the history of Rototoa, a lake in the Auckland region of Aotearoa-New Zealand. The researches combined sediment core analysis with historical data, and ecological experiments to determine what was causing the decline in lake health in recent decades. 

The researchers show that the health of the lake remained stable despite catchment deforestation and erosion, and the introduction of several non-native fish species. The most significant and sustained changes in lake health coincided with nitrogen and phosphorus fertilizers in the catchment.

Congratulations Rose on your excellent research!

Visit www.lakes380.com for a link to the full manuscript.

#Lakes380 #Cawthron #GNS #ScienceLife #NZscience #research #researchLife #VictoriaUniversityofWellington #Aucklandlakes #rototoa #paleolimnology #sedimentcores
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About

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    • Rangitīkei Iwi Rohe Study
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