Associated staff

Myriam Mujawamariya, PhD student

Employed at the University of Rwanda and affiliated to the University of Gothenburg through supervisors Uddling and Wallin

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E-mail: mmujawamariya@gmail.com


Project:
Physiological responses of tropical rainforest tree species in a warming world

My PhD project aims at improving the limited understanding of the climate change sensitivity of a broad range of tropical tree species in Rwanda. The project will investigate physiological responses and underlying biochemical mechanisms of tropical tree species to global warming by determining whether photosynthesis and dark respiration can acclimate to elevated temperature. Taking advantage of an elevational gradient in Rwanda, pioneer and climax species have been taken from Afromontane as well as transitional vegetation zones of Rwanda and then planted at three sites along elevation gradients in Rwanda. A step down the elevation gradient represents a possible future warming scenario. My findings will provide useful information to climate modelers as well as informing the scientific community regarding the climate sensitivity of these important ecosystems and their feedback on the global carbon cycle and ongoing climate change.


Bonaventure Ntirugulirw, PhD student

Employed at the University of Rwanda and affiliated to the University of Gothenburg through supervisors Wallin and Uddling

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E-mail: ntirugulirwab@yahoo.com

 

 


Project:
Study on the suitability of different indigenous tree species in different regions of Rwanda with respect to their climate and climate change sensitivity.

Nowadays, there is an increasing evidence that tropical ecosystems are extremely sensitive to climate change, including both biomass production and tree mortality. However, more research is required to reduce current doubts about the climate-change impacts on forests and people and improve knowledge regarding management and policy measures for adaptation.

In this study we will establish trial of pioneers and climax tree species at three different sites along an elevation gradient in Rwanda. The purpose of this study is to ascertain the sensitivity of growth and competitiveness of Rwandan native tree species in conditions of increased temperature. This knowledge is critical for attempts to understand and consistently predict the potential effects of climate change on tropical forests especially the major native tree species growing in Rwandan forests.


Aloysie Manishimwe, PhD student

Employed at the University of Rwanda and affiliated to the University of Gothenburg through supervisors Wallin and Uddling

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E-mail: aloysie.manishimwe@yahoo.fr

 

 

Project: Biomass allocation in tropical montane tree species in response to elevated temperature.

It is predicted that the ongoing climate change will continue for the next 50 to 100 years which is directly linked to anthropogenic emissions of green-house gases (IPCC 2014). Although, little is known on how tropical trees will acclimate and adapt to these changes (Malhi et al. 2010; Malhi et al. 2013), there is growing evidence that tropical ecosystems are highly sensitive to climate change and variability,especially elevated temperature (Alo & Wang 2008).

To explore how these important ecosystems may react on climate change, this study will investigate how pioneer and climax tree species from low and mid elevation tropical montane forests, will react to elevated temperatures. Specifically we will investigate the effects of temperature on biomass allocation in tropical trees’ foliage, stems and roots by using a unique altitudinal gradient experimental design representing future warming scenarios (Malhi et al. 2010). Confounding of variation in water and nutrient availability will be minimized through water and fertilizer treatments.