Hanna Granroth-Wilding
Email: hanna at granroth hyphen wilding dot co dot uk
Independent funding obtained!

I have been awarded a grant for my proposal to investigate the changing role of parasitism in natural populations under climate change, working on sticklebacks at Helsinki University. The first field season is underway!

I am a postdoctoral fellow with broad interests across evolutionary ecology, currently working on the link between individual variation in responses to stresses and the population-level impacts of those stresses. How do various ecological influences and between-individual differences combine to affect the performance and fitness of wild organisms? What does this mean for the success of individuals and for the growth of populations made up of these variable individuals?

I have recently started a new position at the University of Helsinki, working in Ulrika Candolin's lab, after winning independent funding from Svenska Kulturfonden. In this project, I am linking between-individual variability in host responses to parasitism with the population-level consequences of infection in structured natural populations experiencing increasingly unpredictable environmental conditions. Will climate change alter the way that hosts respond to infection? Will these changes affect all members of a population equally? What will the likely consequences be for that population – will it persist or go extinct? And what about other populations that are structured differently or experience a different environment?

I will be answering these questions using field data, lab experiments and theoretical modelling in the three-spined stickleback, a common small fish in the Baltic Sea that is frequently infected by the cestode parasite Schistocephalus solidus. The ultimate aim of the project is to develop a real-world picture of how population structure and differences between individuals in those populations determine the impact of parasitism on population viability in a human-altered environment.

In my previous postdoc, I worked with Craig Primmer and Toni Laaksonen at the University of Turku, Finland, applying genetic techniques to key questions in evolutionary ecology and applied conservation. We investigated local adaptation in wild salmon by quantifying the reproductive success of individuals from different populations breeding in different parts of a river system in Lapland, giving us unusually unbiased data on how migratory strategy affects fitness. We used similar techniques to develop a framework for monitoring the dynamics and movements of wolf packs in south-west Finland, contributing unbiased information to help solve a human-wildlife conflict. Both papers are well progressed, so watch this space!

Before that postdoc, I held a locum role at the journal Nature as Ecology & Evolution Editor, with responsibility for the assessment of and decisions on submitted manuscripts across the field. Before that, during my PhD, I investigated how seabird parents and chicks are affected by their parasites, how these effects differ between individual family members, and how this influences performance and fitness now and in the future.

Brief CV

2015-2016 Postdoctoral researcher, Univeristy of Turku, Finland
Using pedigree reconstruction to quantify reproductive success in relation to life history strategies in salmon and to monitor population dynamics in grey wolves
2014-2015 Ecology & Evolution Editor, Nature (locum)
Assessing, coordinating review of & deciding on submissions in my subject area
2009-2013 PhD, University of Edinburgh
Parasitism, family conflict and breeding success
2007-8 MRes, Imperial College London (Distinction)
Ecology, Evolution and Conservation
Project 1: Macroecological patterns in squamate predator-prey size relationships, supervised by Shai Meiri.
Project 2: Context-dependent co-operation between male guppies, supervised by Anne Magurran at the University of St Andrews.
2004-7 BA (Hons), Cambridge
Natural Sciences (Zoology)

I work remotely from Cambridge, and in my spare time, I play cello with the Cambridge Philharmonic Orchestra, am Assistant Scout Leader at the 12th Cambridge Group, and volunteer from time to time at the Cambridge Science Centre. In between that, I like to get out in the wilds, mostly on foot with a tent, but that's become more difficult since moving from Scotland to south-east England.