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BSc-MSc Thesis and Internship Projects, Wageningen University

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 Search results for 'Tree ring analyses and wood anatomy' Results 1 -10 of total 23, search took 0.021 seconds 
 
Some trees grow faster than others: why?
Within populations of trees, there are substantial differences in the growth rates of equal-sized trees. Such growth differences between individuals can persist for several decades, and cause trees to strongly differ in age when t ...
Supervisor: Prof. Dr. P.A. (Pieter) Zuidema
Department: Forest Ecology and Forest Management Group
 
Tropical wood density unraveled: effects of species, climate and tree size
Tropical forests store vast amounts of carbon and thus play an crucial role in the global carbon cycle. Changes in the carbon sequestration of tropical forests will thus have strong consequences for future climate: tropical forest ...
Supervisor: Prof. Dr. P.A. (Pieter) Zuidema; Dr. U. (Ute) Sass-Klaassen;
Department: Forest Ecology and Forest Management Group
 
Understanding environmental effects on delta 13C and growth of tropical trees
Stable isotopes are variations of the same element in the number of neutrons in the core. They are chemically the same but differ in mass and therefore some biological processes discriminate against one of them. Carbon isotopes in ...
Supervisor: Dr. Pieter A. Zuidema


Department: Forest Ecology and Forest Management Group
 
Stem cell development compared across species: from cambium to xylem and phloem cells
Xylem and phloem cell development in plant stems has been described in qualitative sense, but comparative and quantitative analyses that are required for understanding differences in stem development and functioning across plant s ...
Supervisor: FEM group: Frank Sterck, Ute Sass-Klaassen
Other organisation: Professor Fritz Schweingruber, Roman Zweifel (WSL, Switzerland)

Department: Forest Ecology and Forest Management Group
 
Growth responses to thinning in douglas fir
Douglas fir (Pseudotsuga menziesii) is one of the most productive tree species in European forests. Douglas fir stands are maintained by thinning until a point where regeneration is started and the old trees removed. Conventional  ...
Supervisor: FEM group: dr.ir. J (Jan) den Ouden
Other organisation: ing. René Olthof, Kroondomeinen het Loo

Department: Forest Ecology and Forest Management Group
 
Individual increment functions for douglas fir
Kroondomein Het Loo (a large forest estate near Apeldoorn) and the FEM group recently established two marteloscopes in douglas fir stands. Marteloscopes are forests especially designed for doing exercises in forest management. All ...
Supervisor: FEM group: dr.ir. J (Jan) den Ouden
Other organisation: ing. René Olthof, Kroondomein Het Loo

Department: Forest Ecology and Forest Management Group
 
Anatomical traits regulate cavitation resistance in conifer tree species
Conifers (co-)dominate in many forests in different climates across the temperate zone, with some species better adapted to cold or dry habitats than others. Their wood anatomical traits (i.e., extremely narrow tracheid size and  ...
Supervisor: Yanjun Song, Frank Sterck, Ute Sass-Klaassen
Department: Forest Ecology and Forest Management Group
 
Dieback of the Amazon rainforest giants? Can tree hydraulics provide a clue?
Amazon tropical rainforests are increasingly impacted by el-Nino droughts. During those severe drought events, it is especially the large canopy trees that are dying. It is thought that the water relationships (i.e. hydraulics) of ...
Supervisor: FEM group: Lourens Poorter
Other organisation: Dr Flavia Costa, INPA, Manaus, Brazil

Department: Forest Ecology and Forest Management Group
 
Effects of extreme drought on tree species – selecting species and provenances under climate change
Also possible as MSc internship (24 credtis)/ BSc thesis (mainly literature study) The extreme 2018 drought was one of the most severe and long-lasting summer droughts ever recorded. Several tree species showed high mortality  ...
Supervisor: dr.ir. P (Paul) Copini
dr. UGW (Ute) Sass-Klaassen

Department: Forest Ecology and Forest Management Group
 
How old is this tropical forest tree? (And how to estimate that?)
There’s a lot of discussion about the (maximum) ages of trees in tropical forests. Some scientists consider that thousand-year old trees are rather common, while others believe this is unlikely. Apart from this fundamental questio ...
Supervisor: Prof. Dr. P.A. (Pieter) Zuidema
Department: Forest Ecology and Forest Management Group
 
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