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Department of Plant Sciences

 

Research group

 

Research overview

1. Physiology and stable isotope ecology of moss growth for modelling spatial and temporal climatic signals
 
We want to increase our understanding of moss growth dynamics to include how plants respond to different evaporative conditions, how different types of moss grow, what conditions are best for the fixation of carbon dioxide from the atmosphere and growth through the synthesis of organic matter.
 
These developments in moss physiology will be integrated with local weather conditions in models of moss growth that can be applied across large areas to predict periods of plant growth. We will carry out laboratory experiments in which moss growth is manipulated, monitored and measured, using isotope labels and growth responses under different temperature, humidity and drying regimes. We will work on moss species that grow in a range of habitats from wet bog Sphagnums, through hummock forming Polytrichales to desiccation tolerant Syntrichia.
 
At the field scale, the same mosses will be monitored in their natural environment, testing how the experimentally determined dynamics apply within an ecologically relevant setting. The  combination of lab and field measurements will firstly allow us to determine the controls on moss organic matter 18O composition as climatic conditions vary. Secondly, remote sensing field measurements will be made from a distance of several metres using newly developed LIFT (laser induced fluorescence transient) technology. By understanding the link between moss growth dynamics and photosynthetic activation over this larger spatial scale we will establish a baseline that will allow remote sensing methodologies, such as measurements from aeroplanes and satellites, to be used to monitor moss performance in the future.
Project collaborators: Dr Jörg Kaduk (University of Leicester), Professor Heiko Baltzer (University of Leicester), Dr Lisa Wingate (INRA Bordeaux), Dr Jérôme Ogée (INRA Bordeaux), Dr Uwe Rascher (Forschungszentrum Jülich, Germany)
 
2. Terrestrial Holocene climate variability on the Antarctic Peninsula
 
The overall aim of the project is to establish whether the recent observed rate and pattern of climate change on the Antarctic Peninsula is outside the range of natural climate variability for the late Holocene. See project website for more information and our blog.
 
Project overview:
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We are developing palaeoclimate records from cores of peat from moss banks, which occur throughout the western areas of the Antarctic Peninsula. We will derive multi-proxy palaeoclimate records based on stable isotopes, testate amoebae, moss growth and degree of decay from the deepest moss banks on the Antarctic Peninsula. Target locations are distributed across the observed gradient in rates of late 20th century temperature change in order to reconstruct spatial patterns of change as well as temporal variability. Modern moss samples from the region, precipitation data, instrumental climate data and cellulose isotope records will help us understand cellulose isotope-climate relationships for the region. Testate amoebae assemblages in both modern and fossil samples will also be analysed to develop independent records of hydrological change. Moss morphology will provide supplementary data on past temperatures, and we will also test whether plant growth rates and phenology have responded to recent climate change on the Antarctic Peninsula. We aim to reconstruct climate variability for the past c. 5000 years from the stable isotope, peat humification, testate amoebae and moss morphology records and then compare and integrate the records with existing and new ice core, lake sediment and marine records to improve understanding of regional climate change and its relationship with global climate variability and external drivers.
 
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Project members: Dr Matt Amesbury (Department of Geography, University of Exeter), Professor Peter Convey (British Antarctic Survey), Professor Dan Charman (Department of Geography, University of Exeter), Professor Howard Griffiths (Department of Plant Sciences, University of Cambridge), Professor Dominic Hodgson (British Antarctic Survey).
 

Teaching

Supervises and teaches on the following modules, practicals, research projects and field trips on the Natural Science Tripos:
  • Part 1A Physiology of Organisms: Animal, Plant and Microbial Physiology Module
  • Part 1B Plant and Microbial Sciences: Water, Nutrients and Temperature Module
  • Part II Plant Sciences Research Project
  • Part 1B Ecology Research Project
  • Summer Studentships Research Projects
  • Part 1B Plant and Microbial Sciences: Photosynthesis and Plant Water Relations Practical
  • Part 1B Plant and Microbial Sciences: Field Trip to Portugal
 

Previous positions

2015-present Postdoctoral Research Associate: Physiology and stable isotope ecology of moss growth for modelling spatial and temporal climatic signals, Department of Plant Sciences, University of Cambridge
2012-2015 Postdoctoral Research Associate: Terrestrial Holocene climate variability on the Antarctic Peninsula, British Antarctic Survey, Cambridge
 

Qualifications

2008-2012 PhD in Environmental isotopic records preserved in Antarctic peat moss banks, Physiological Ecology Group, Department of Plant Sciences, University of Cambridge 
2005-2006 MSc Biology (Integrative Bioscience), University of Oxford
2002-2005 BA (Hons) Natural Sciences, University of Cambridge
 

Websites

Publications

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Funding

2015-present: Researcher Co-Investigator on NERC standard grant NE/M001946/1
2012-2015: Named post-doc on NERC grant NE/H014896/1 (AFI_11_05)
Postdoctoral Research Associate
Dr Jessica  Royles

Contact Details

Email address: 
Department of Plant Sciences,
Downing Street,
Cambridge,
CB2 3EA
01223 330218