• 815 Citations
  • 16 h-Index
20032019
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Personal profile

Personal profile

Being an Associate Professor in the Department of Natural Resources,I aim to inform society about the fate of (semi) natural ecosystems. In many developing nations and upcoming economies, information on ecosystems is scarce. Nevertheless, ecosystems in these countries often harbour rich biodiversity and the indirect services they deliver to society are assumed to be large. To effectively protect and manage these systems requires reliable methods to estimate the current state and changes in these ecosystems from observations, both remotely sensed as well as from the ground. To this end, I study and teach on empirical spatial interpolation techniques (so called species distribution modelling in ecology or environmental niche modelling in agronomy), stress detection in vegetation with thermal infrared remote sensing techniques and how to extract early warning signals of tipping points in ecosystems from satellite time series. 

Teaching

Part of the NRM Curriculum and the iGEON distance based course.

Teaching topics related to:

  • Spatial Modelling
  • Species Distribution Models
  • Statistics
  • Modelling in R
  • Quantitative Ecology
  • Thermal spectroscopy
  • Field Work Preparation
  • Research Skills

Personal profile

Topics covered by current and past research include:

  • Species distribution modelling techniques, error propagation and applications for conservation
  • Hyperspectral thermal remote sensing of plant stress
  • remote sensing and spatial modelling to assess dynamics in ecosystems
  • Interactions between savanna vegetation patterns and fire
  • Early-warning for tipping points in ecosystems
  • Novel methodologies to determine carbon budgets of forests
  • Novel methodologies to create long time series from various geographical information sources,

Personal profile

Activities in capacity development

I have undertaken fieldwork in Australia, Bulgaria, India and South Africa and performed consulting and training service work in Burkina Faso, Costa Rica, Ghana, Greece, Indonesia, Kenya, Namibia, Russia (Sacha Republic), Rwanda, Uganda, and Vietnam.

Fingerprint Dive into the research topics where Thomas Groen is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

savanna Earth & Environmental Sciences
vegetation Earth & Environmental Sciences
modeling Earth & Environmental Sciences
autocorrelation Earth & Environmental Sciences
Rhododendron Agriculture & Biology
land cover Earth & Environmental Sciences
water content Agriculture & Biology
tropical grasslands Agriculture & Biology

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Research Output 2003 2019

Abundance and spatial distribution of the main food species for mountain gorillas in the Virunga Massif, Rwanda

Akayezu, P., van Duren, I. C., Groen, T. A., Grueter, C. C. & Robbins, M. M., 1 Nov 2019, In : Biodiversity and conservation. 28, 13, p. 3597-3620 24 p.

Research output: Contribution to journalArticleAcademicpeer-review

Rwanda
Gorilla
mountains
spatial distribution
mountain
1 Citation (Scopus)

Climate and land use changes will degrade the distribution of Rhododendrons in China

Yu, F., Wang, T., Groen, T. A., Skidmore, A. K., Yang, X., Ma, K. & Wu, Z., 1 Apr 2019, In : Science of the total environment. 659, p. 515-528 14 p.

Research output: Contribution to journalArticleAcademicpeer-review

Land use
land use change
climate
distribution
Biodiversity

Effects of Grazing and Browsing on Tropical Savanna Vegetation

van Langevelde, F., van de Vijver, C. A. D. M., Prins, H. H. T. & Groen, T. A., 13 Nov 2019, The Ecology of Browsing and Grazing II. Gordon, I. & Prins, H. H. T. (eds.). 239 ed. Springer, Vol. Ecological Studies. p. 237-257 20 p.

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

browsing
savanna
grazing
vegetation
herbivore

ELSA: A new entropy-based statistic to measure local and global spatial structure : abstract

Naimi, B., Hamm, N. A. S., Groen, T. A., Skidmore, A. K., Toxopeus, A. G. & Alibakhshi, S., Jul 2019, p. 1-1. 1 p.

Research output: Contribution to conferenceAbstract

Open Access
File
1 Citation (Scopus)
3 Downloads (Pure)

ELSA: Entropy-based local indicator of spatial association

Naimi, B., Hamm, N. A. S., Groen, T. A., Skidmore, A. K., Toxopeus, A. G. & Alibakhshi, S., Mar 2019, In : Spatial statistics. 29, p. 66-88 23 p.

Research output: Contribution to journalArticleAcademicpeer-review

entropy
Entropy
spatial data
Spatial Data
Statistics

Datasets

Changes in thermal infrared spectra of plants caused by temperature and water stress

Buitrago Acevedo, M. F. (Creator), Groen, T. (Creator), Hecker, C. (Creator), Skidmore, A. (Creator), University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC), 1 Aug 2018

Dataset

Activities 2019 2019

  • 1 Invited talk

Using remote sensing to assess ecosystem functioning

Thomas Groen (Speaker)
6 Nov 2019

Activity: Talk or presentationInvited talk