Kurtis Nisbet

Kurtis Nisbet serves as a Researcher at Griffith University's School of Environment and Science in Brisbane, Australia, where he has worked as a Scientific Officer since 2019. He completed his Bachelor of Science with First Class Honours in 2018.

His research specializes in forest ecosystem processes, particularly examining deadwood decomposition and its critical role in the global carbon cycle. Nisbet investigates how climate variables and insect activity influence wood decay rates across different biomes, with significant implications for climate change modeling.

His most notable contribution is co-authoring groundbreaking research published in Nature that calculated global carbon emissions from decaying wood for the first time, revealing 10.9 billion tonnes of carbon released annually. This research demonstrated insects contribute approximately 29% of this total, with their impact disproportionately higher in tropical regions where they facilitate nearly one-third of carbon release from deadwood.

Nisbet participated in an extensive international collaboration involving over 30 research groups across six continents, placing wood samples from 140+ tree species at 55 forest sites worldwide. By using mesh cages to exclude insects from half the samples, the team isolated insect contributions to decomposition processes.

• Forest carbon cycling dynamics
• Insect-mediated decomposition processes
• Climate change impacts on ecosystem functions
• Tropical versus temperate decomposition rates
• Deadwood management implications for carbon sequestration

His work demonstrates that deadwood decomposition rates increase significantly with rising temperatures, particularly in tropical regions where annual mass loss reaches 28.2% compared to 6.3% in temperate zones. These findings suggest climate change will accelerate carbon release from deadwood, creating a positive feedback loop that could exacerbate global warming trends.