Publications by authors named "T Jucker"
Capturing how tree growth and survival vary through space and time is critical to understanding the structure and dynamics of tree-dominated ecosystems. However, characterising demographic processes at scale is inherently challenging, as trees are slow-growing, long-lived and cover vast expanses of land. We used repeat airborne laser scanning data acquired across 25 km of semi-arid, old-growth temperate woodland in Western Australia to track the height growth, crown expansion and mortality of 42 213 individual trees over 9 yr.
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- * Analysis of data from over 1 million forest plots and thousands of tree species shows that wood density varies significantly by latitude, being up to 30% denser in tropical forests compared to boreal forests, and is influenced mainly by temperature and soil moisture.
- * The research also finds that disturbances like human activity and fire alter wood density at local levels, affecting forest carbon stock estimates by up to 21%, emphasizing the importance of understanding environmental impacts on forest ecosystems.
Objective: Pressure ulcers (PUs) severely impact health outcomes in neonatal intensive care, with up to 28% prevalence and doubled mortality rates. Due to their only partially developed stratum corneum, neonates are highly susceptible to PUs because of a lack of adequate support surfaces. The occipital region of the head and hip are the main risk areas due to immobility and newborn body proportions.
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- The study investigates how disturbance rates and tree growth in tropical forests will be impacted by climate change, focusing on how these factors interact over time.
- Using airborne LiDAR technology, researchers analyzed changes in canopy height across 8000 hectares of old-growth tropical forests over 4-5 years, comparing sites in Borneo, the eastern Amazon, and the Guiana shield.
- Findings indicate that while the eastern Amazon and Guiana shield forests maintained stable canopy heights, Borneo experienced a decline due to more frequent small-scale disturbances, suggesting taller trees are more vulnerable and may face greater threats from extreme weather linked to climate change.