sTRAITS: Integrating in-situ, upscaled and air- and spaceborne observations of plant traits

First meeting: 25.-29.10.2021

PIs:
Philip A. Townsend
Ryan Pavlick

iDiv members:
Jens Kattge
Helge Bruelheide
Andreas Huth
Miguel Mahecha
Markus Reichstein
Michael Vohland
Christian Wirth

Working Group Postdoc:
Benjamin Dechant

Project summary:
Plant traits are characteristics of plants that result from evolutionary and community assembly processes and respond to environmental drivers. Trait-based ecology has become an important approach for characterizing diversity, predicting ecosystem function and understanding the consequences of global change. At present, our understanding of trait distributions globally comes from disconnected in-situ measurements collected non-systematically over many years, hyperspectral and lidar remote sensing (none of which are global in extent yet) - and statistical upscaling based on in-situ data. This statistical upscaling is global in extent, but has yet to be validated with independent data, and is likely valid at some scales and not others. We propose to develop consistent, high-resolution (~1km) global-scale data products through the synergistic merger of these data sources. First, we will integrate these data sources to: a) identify gaps in knowledge of trait distributions from in-situ and remotely-sensed sources, b) test the performance of upscaled trait data against remote sensing, and c) develop a synthesis product. Second, we will use this synthesis product to better understand trait-trait and trait-environment relationships at regional to global scales and test how traits and their diversity impact ecosystem function, as derived from other global products such as flux tower networks and satellites. We will develop a framework to estimate plant traits and their diversity across large environmental gradients in order to establish the optimal temporal and spatial coverage for data collection needed to calibrate and validate upcoming global satellite products from NASA and ESA missions in the late 2020s.

In person participants:
Benjamin Dechant (iDiv), Hannes Feilhauer (Leipzig University), Teja Kattenborn (Leipzig University), Sönke Zaehle (Max Planck Institute for Biogeochemistry), Coline Boonman (Radboud University), Jens Kattge (MPI-BGC), Alvaro Moreno-Martinez (Image Processing Laboratory (IPL)), Helena Vallicrosa (CREAF), Fabian Schneider (Jet Propulsion Laboratory / California Institute of Technology), Peter van Bodegom (Leiden University), Jordi Sardans (CREAF-CSIC), Josep Penuelas (CREAF-CSIC)

Participants in Madison:
Ethan Butler (University of Minnesota), Jeannine Cavender-Bares (University of Minnesota), Sandra Duran (University of Minnesota), Ryan Pavlick (Jet Propulsion Laboratory), Philip Townsend (University of Wisconsin-Madison)

Remote participants:
Holly Croft (University of Sheffield), Jesus Aguirre Gutierrez (University of Oxford), Ning Dong (Imperial College London), Nima Madani (Jet Propulsion Laboratory), Isla Myers-Smith (University of Edinburgh), Iain Colin Prentice (Imperial College London), Peter Reich (University of Minnesota), Irena Simova (Charles University, Center for Theoretical Study), Helge Bruelheide (Martin Luther University Halle-Wittenberg), Francesco Maria Sabatini (Università di Bologna), Ian Wright (Macquarie University), Karin Rebel (Utrecht University, Copernicus Institute of Sustainable Development), Yasmina Loozen (ISSeP)

Meeting reports


Second meeting: 07.-10.06.2022

Participants:
Philip Townsend, Ryan Pavlick, Jens Kattge, Fabian Schneider, Gregory Asner, Coline Boonman, Helge Bruelheide, Jeannine Cavender-Bares, Sandra Diaz, Sandra Duran, Hannes Feilhauer, Andreas Huth, Miguel Mahecha, Roberta Martin, Alvaro Moreno-Martinez, Isla Myers-Smith, Josep Penuelas, Karin Rebel, Peter Reich, Markus Reichstein, Michael Schaepmann, Irena Simova, Peter van Bodegom, Michael Vohland, Christian Wirth, Sönke Zaehle

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