Mon. 19 Dec, 2022 - Sun. 25 Dec, 2022
Tue. 20 Dec, 2022
Retirement fika for Leszek Kleczkowski
Tue. 20 Dec, 2022 14:00 - 15:00
By the end of the year, Leszek Kleczkowski will retire from his position as Professor. The Department of Plant Physiology is cordially inviting everyone at UPSC for a cake in the lunch room to thank Leszek for his more than 28 years of duty at the department.
UPSC Seminar: Bertold Mariën
Tue. 20 Dec, 2022 15:00 - 16:00
UPSC Seminar
Bertold Mariën
IceLab Postdoc in Statistical Learning for Chronosilviculture, a collaboration project between the groups of Jun Yu & Maria E. Eriksson
Title: Autumn phenology and the timing of leaf senescence
Host: Maria E. Eriksson & Jun Yu
Abstract:
The coloring of leaves in many tree species is a prominent phenomenon. The timing of this process, however, is not yet completely understood. The timing of leaf senescence in beech, oak, birch and poplar trees was investigated during four exceptional dry and warm years. Two aspects were adressed: (I) determining the timing of the leaf senescence and (II) determining the fine-root phenology throughout the year to investigate a possible coupling between the phenology of the leaves and fine-roots. Substantial attention has been given to detecting phenological transition dates in longitudinal data of the chlorophyll content index and fine-roots. Especially the use of generalized additive models (GAMs) and generalized additive models for location, scale and shape (GAMLSS) has been explored in relation to the detection of phenological transition date.
Bertold Mariën
IceLab Postdoc in Statistical Learning for Chronosilviculture, a collaboration project between the groups of Jun Yu & Maria E. Eriksson
Title: Autumn phenology and the timing of leaf senescence
Host: Maria E. Eriksson & Jun Yu
Abstract:
The coloring of leaves in many tree species is a prominent phenomenon. The timing of this process, however, is not yet completely understood. The timing of leaf senescence in beech, oak, birch and poplar trees was investigated during four exceptional dry and warm years. Two aspects were adressed: (I) determining the timing of the leaf senescence and (II) determining the fine-root phenology throughout the year to investigate a possible coupling between the phenology of the leaves and fine-roots. Substantial attention has been given to detecting phenological transition dates in longitudinal data of the chlorophyll content index and fine-roots. Especially the use of generalized additive models (GAMs) and generalized additive models for location, scale and shape (GAMLSS) has been explored in relation to the detection of phenological transition date.