PhD project offered by the IMPRS-gBGC in July 2018

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The role of windthrow in biomass dynamics and structure central Amazon forests

Susan Trumbore , Daniel Magnebosco Marra

Project description

Amazon forests account for ~25% of global land biomass and tropical tree species. Yet, we still understand little of the role played by disturbance mechanisms like windthrow and recovery as controls on biomass and community structure over century timescales. The potential for climate-change to alter the severity and/or frequency of downbursts that can cause windthrow can therefore lead to changes in future forest biomass. In central Amazon forests near Manaus, Brazil, we are conducting a detailed study to observe wind damage at the level of a few trees or tree crowns, and to put this in the larger context of biomass balance in a large permanent plot. We conduct this research as part of a the joint Brazilian-German research consortium ATTO (Amazon Tall Tower Observatory).
The focus of this PhD project is to combine field measurements of biomass change with measures of changes in canopy structure using remote sensing observations, and to link these to wind conditions observed at the same site. The PhD candidate shoul have a good command of statistics and will be expected to work in the field as well as interpret optical remote sensing data, plus potentially repeat Lidar measurements. There is also potential to collaborate with researchers conducting similar studies at other sites in Brazil and Peru. The project will shed light on mechanisms of tree mortality in the central Amazon, and provide the potential to link remote sensing at different levels of spatial resolution.

Requirements

Applications to the IMPRS-gBGC are open to well-motivated and highly-qualified students from all countries. Prerequisites for this PhD project are
  • a Master’s degree in Forestry, Biology, Geography, Ecology or Environmental Sciences
  • experience in processing and analyzing remote sensing data and/or experience in field measurements under demanding conditions (like those in tropical forests) are highly desired
  • experience with isotopes preferred
  • excellent oral and written communication skills in English
  • and readiness to work within a multidisciplinary research team
The Max Planck Society seeks to increase the number of women in those areas where they are underrepresented and therefore explicitly encourages women to apply. The Max Planck Society is committed to increasing the number of individuals with disabilities in its workforce and therefore encourages applications from such qualified individuals.

a) ATTO tower from aircraft, b) Trees downed by wind in a central Amazon forest
a) ATTO tower from aircraft, b) Trees downed by wind in a central Amazon forest


>> more information about the IMPRS-gBGC + application