Alumni

Shubhangi Lamba, PhD

ShubangiPhone: +46 (0)31-786 2928
E-mail: shubhangi.lamba@bioenv.gu.se

There is a lot of uncertainty in the response of trees and entire forest ecosystems due to the increasing atmospheric CO2 concentration and climate change. Much of these uncertainties are due to poorly quantified, bidirectional climate-forest feedbacks. Investigating responses of specific forest ecosystem processes such as photosynthesis, respiration and tree-atmosphere exchange of CO2 and H2O in detail is important to estimate forest responses to and feedbacks on climate change. My study deals with the response of boreal Norway spruce forest ecosystem processes such as photosynthesis, respiration and transpiration to increasing CO2  concentration and temperature. Effects of elevated CO2 and temperature on mature boreal spruce trees were studied in field experiments in which fluxes of both CO2 and water flux data are available at shoot as well as whole tree level.  Responses of shoot photosynthesis, respiration, stomatal conductance and phenology are quantified and scaled up to whole tree level by using the MAESTRA model to assess the relative importance of different types of plant acclimation in a changing climate. My research also aims to introduce dynamic tree responses (i.e. tree acclimation) into the dynamic global vegetation model (DGVM) LPJ-GUESS.

Supervisors: Johan Uddling, Göran Wallin

 


Fernando Jaramillo, Post-doc

Fernando

E-mail: fernando.jaramillo[at]natgeo.su.se

Fernando Jaramillo is a Researcher at Stockholm Resilience Center and Department of Physical Geography, Stockholm University. He is a civil Engineer that has worked in the coal-mining sector and environmental consultancy in his home country Colombia. After a 180-degree turn in life, he decided to start a venturing quest into hydrologic and water resources research. He holds a M.Sc. in Civil Engineering (McGill University) and a PhD in Physical Geography (Stockholm University), the latter obtained in 2015 and focused in hydrology and water resources. He has attributed and quantified historical human impacts on water resources and hydroclimate at the global scales from activities such as rain-fed and irrigated agriculture, forestry and flow regulation by dams. After finishing his PhD degree, he became a temporary postdoctoral researcher at the Department of Department of Biological and Environmental Sciences, University of Gothenburg to study the interaction between forest development and hydroclimate in Northern regions.

 


Tage Vowles, PhD

TageE-mail: tage.vowles[at]bioenv.gu.se

The overall objective of my research is to try to gain an increased understanding of plant-herbivore interactions in mountain ecosystems under a changing climate. In the recent past, substantial evidence has accumulated that arctic and alpine landscapes are undergoing distinct changes in plant community structure, presumably brought about by increasing temperatures and a prolonged snow-free season. However, research suggests that reindeer can inhibit climate-driven shrub expansion and plant community change in the Arctic. Consequently, model simulations not considering herbivore impact may be severely biased, thus impairing projections of vegetation composition and associated ecosystem changes. To improve our knowledge of how future climate warming may affect the Swedish mountains it is therefore crucial that we gain a better understanding of the underlying processes of large herbivore grazing on ecosystem functions and services.

 


Brigitte Nyirambangutse, PhD

BrigitteE-mail: brigitte.nyirambangutse[at]bioenv.gu.se

I have completed my doctoral studies in Sweden at the University of Gothenburg, in the department of Biological and Environmental Sciences in December 2016. My PhD research focused on Nyungwe forest, an Afromontane tropical forest in Rwanda and the role that montane forests of Africa have in the global carbon cycle. In particular, Brigitte investigated the carbon and nutrient cycling of early and late successional forest stands in Nyungwe forest, one of Africa’s largest remaining tropical montane forest. I have a wide range of research interests within the broad area of ecosystem, biodiversity, forest landscape restoration and environmental sciences. I have a particular fascination with and love for forests. I am currently a Lecturer in the Biology Department at the University of Rwanda, and a Research affiliated to the Center of Biodiversity and Natural Resources Management.  I am involved in a project entitled “Tropical montane forest in a warming world” and another research project entitled “Research project to improve management knowledge of the Gishwati-Mukura landscape” sponsored by Rwanda Environmental Management Authority (REMA)