PHD POSITION in evolutionary ecology at the Department of Botany, Stockholm 
University, Sweden

Project description:  The project will investigate the environmental factors 
driving variation in phenotypic selection on timing of reproduction in 
iteroparous plants via interactions with antagonistic and mutualistic 
animals. An important part of the project is to assess the effects of 
interactions on lifetime fitness using demographic information, and to 
calculate estimates of selection based on lifetime fitness. The project will 
also use long-term data sets to estimate individual-specific reaction norms 
between timing of reproduction and climate as well as selection on these 
reaction norms. 

The project will initially focus on a model system consisting of a perennial 
plant (Lathyrus vernus), its’ antagonists (large mammalian herbivores and 
pre-dispersal seed predators) and mutualists (bumble-bee pollinators). The 
methods will consist of experiments in the field, common garden and 
greenhouse as well as correlational field studies. The analytical framework 
will consist of phenotypic selection analyses to link traits with fitness 
components and demographic analyses, such as integral projection models 
(IPMs), to link fitness components with lifetime fitness.   
 
Qualifications:  MSc or similar degree in ecology or related disciplines (at 
least 4 years education including a minimum of 10 weeks ecology courses). We 
seek a candidate with good knowledge of ecological and evolutionary theory, 
analytical capacity and good skills in English. Previous experience of field 
and or experimental work is desirable. 

How to apply: Application should include (1) a letter stating why the 
applicant should be considered a strong candidate for the position, (2) a 
CV, (3) one copy of the master thesis (and other documents supporting your 
competence and suitability for the position), (4) names, with e-mail address 
and telephone numbers, of two reference persons, and (5) possible other 
documents that the applicant wants to be considered. You are welcome with 
your application, labeled with the reference number SU 461-32-2012, and it 
should be received no later than November 20, 2012, to: Department of 
Botany; Registrar Leila Ahonen; Stockholm University; SE-106 91 STOCKHOLM; 
SWEDEN, or by e-mail to: [email protected].

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Johan Ehrlén
Professor Plant Ecology
Department of Botany
Stockholm University
SE 10691 Stockholm
Sweden

email: [email protected]
phone: + 46 8 161202
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