Publications by authors named "K E Cushman"
Article Synopsis
- The Amazon forest is losing more carbon than it can absorb due to deforestation and degradation, complicating efforts to pinpoint the exact sources of carbon loss.
- A detailed airborne laser scanning survey assessed carbon gains and losses, indicating that human activities like clearing and logging, along with natural disturbances like windthrow, are significant contributors to carbon emissions in the region.
- Overall, the study found a net loss of 90.5 Tg C per year, emphasizing that forest degradation has a more substantial impact on carbon loss than deforestation alone.
Introduction: Many falls in older adults are due to a loss of mediolateral stability during gait. This investigation examines if a simple beam-walking task can assess fall risk in older adults by taxing mediolateral control during gait.
Material And Methods: 50 older adults (65-96 yrs.
Tree mortality is a major control over tropical forest carbon stocks globally but the strength of associations between abiotic drivers and tree mortality within forested landscapes is poorly understood. Here, we used repeat drone photogrammetry across 1500 ha of forest in Central Panama over 5 years to quantify spatial variation in canopy disturbance rates and its predictors. We identified 11,153 canopy disturbances greater than 25 m in area, including treefalls, large branchfalls and standing dead trees, affecting 1.
View Article and Find Full Text PDFField measurements demonstrate a carbon sink in the Amazon and Congo basins, but the cause of this sink is uncertain. One possibility is that forest landscapes are experiencing transient recovery from previous disturbance. Attributing the carbon sink to transient recovery or other processes is challenging because we do not understand the sensitivity of conventional remote sensing methods to changes in aboveground carbon density (ACD) caused by disturbance events.
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