Dear colleagues,

Due to the current health situation we, the IUFRO Task Force on Monitoring Global Tree Mortality Patterns and Trends, had to cancel our first workshop on “Harmonizing terrestrial data sources on forest condition” that was supposed to be held in Wuerzburg, Germany, at the end of March. We have acted upon the corona restrictions and have substituted the 'physical' workshop with two online surveys, which will be followed by a series of virtual working group meetings.

Surveys and workshops aim to identify existing terrestrial and remote sensing data sources on forest condition and how the data can be harmonized to infer information on tree mortality rates and trends over time. We now seek your help to assemble information on existing data sources that allow deriving global tree mortality rates. The links below will take you to the surveys, specifically designed to be as brief as possible. The surveys seek to assemble metadata on existing data sources in order to:

· develop methods for quantification of tree mortality rates consistently across different protocols, and

· link ground and satellite-based information to understand how tree mortality changes over time.

Terrestrial data: https://forms.gle/NnVfhLv66j1Hnbro6

Remote sensing data: https://forms.gle/h9eXvob7E6ZXRjxVA

Data hosting will be assumed by the International Tree Mortality Network (https://www.tree-mortality.net/) which is an initiative established by the IUFRO Task Force on Monitoring Global Tree Mortality Patterns and Trends.

Please contact us (https://www.iufro.org/science/task-forces/tree-mortality-patterns/) if you’re interested in joining the post-survey workshops or for any other requests or inquiries.

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Dr. (habil.) Henrik Hartmann

Group leader

Plant Allocation

MPI for Biogeochemistry

Hans Knöll Str. 10

07745 Jena, Germany

Contact:  hhart@bgc-jena.mpg.de

Phone:    +49.3641.576294

Mobile:  +49.171.8188273

Website: https://www.bgc-jena.mpg.de/bgp/index.php/HenrikHartmann/HenrikHartmann