Matthias B. Siewert


Matthias B. Siewert,
(Post-doctoral researcher)

Phone: 090-786 56 47
Umeå University page

Research Summary

The core of my research is to gain a spatial understanding of Arctic carbon dynamics in plants and soils. In my postdoc, I use drones to investigate seasonal changes in tundra vegetation. In my PhD, I wrote about spatial patterns and mapping methods of soil organic carbon in permafrost environments. I also have a strong interest in periglacial geomorphology and landscape dynamics.

Project Summary

Herbivore driven plant cycles: Using drones to study Arctic plant communities and carbon dynamics

Arctic ecosystems are commonly investigated at plot scale in the field or using satellites. This creates a tremendous spatial mismatch. We want to bridge the information gained at both scales using drones. A particular interest in our research are scaling effects of the normalized difference vegetation index (NDVI) used in remote sensing studies to monitor vegetation changes globally, and the effect of herbivores such as reindeer, voles and lemmings on Arctic ecosystems and carbon dynamics.


Johan Olofsson

Funding Organizations

Carl Tryggers Stiftelse

Matthias Siewert's Publications

Google Scholar

Drivers of dissolved organic carbon export in a subarctic catchment: Importance of microbial decomposition, sorption-desorption, peatland and lateral flow
Science of the Total Environment, Elsevier 2018, Vol. 622 : 260-274
Tang, Jing; Yurova, Alla Y.; Schurgers, Guy; et al.

High-resolution digital mapping of soil organic carbon in permafrost terrain using machine learning: a case study in a sub-Arctic peatland environment
Biogeosciences, Copernicus GmbH 2018, Vol. 15, (6) : 1663-1682
Siewert, Matthias B.

Short and Long-Term Controls on Active Layer and Permafrost Carbon Turnover Across the Arcti
Journal of Geophysical Research - Biogeosciences, American Geophysical Union (AGU) 2018, Vol. 123, (2) : 372-390
Faucherre, Samuel; Jørgensen, Christian Juncher; Blok, Daan; et al.