Statistician
Research Fellow at University of St Andrews
rg374@st-andrews.ac.uk




Effect of Animal Movement on Line Transect Estimates of Abundance

Animal movement, independent of the observer, can cause substantial bias in abundance estimates from line transect surveys. 


Markov-Switching Generalised Additive Models

Allowing for the relationship between predictors and a response to change over time: incorporating flexible generalised additive models (GAMs) with Markov-switching. 


openpopscr: R package for Jolly-Seber Spatial Capture-Recapture

Estimate abundance, survival, and recruitment over time from spatial capture-recapture data. Models are fit using maximum likelihood: fast, efficient, and reliable inference. 

About me

I am a Research Fellow at the University of St Andrews, based in the Centre for Research into Ecological and Environmental Modelling.

My research interests are in Mathematics, Statistics, and Computer Science; in particular, using knowledge from these fields to solve problems in statistical ecology.

Statistical Ecology
Mathematics & Statistics
  • Hidden Markov Models
  • Path Integration: computing functional integrals efficiently
  • Continuous-time Stochastic Processes: Wiener process and extensions
Computer Science
  • Software development in R and C++
  • Matrix Methods: Krylov subspaces, Fast-Fourier Transform, Sparse Matrices
  • Object-Orientated Programming

My PhD is entitled Incorporating Animal Movement with Distance Sampling and Spatial Capture-Recapture and was supervised by Stephen T. Buckland and Roland Langrock.

Education

  • 2018 – Present
    Research Fellow, University of St Andrews
  • 2014 – 2018
    PhD Statistics, University of St Andrews
  • 2010 – 2014
    MMath Mathematics,
    University of Andrews, First Class

Employment

  • 2017 – 2018
    School co-coordinator for Academic Skills Project, CAPOD
  • 2014 – 2018
    Postgraduate Tutor
    School of Mathematics & Statistics
  • 2014 – Present
    Maths & Stats Tutor
    CAPOD

FULL CV

Publications

Each published paper has a link to the published version. Submitted papers have a link to the current draft hosted on Statistics St Andrews Research Repository.

Submitted for Review

Published Papers

Software

Software available from my GitHub page.

  • openpopscr: R package to fit open population Jolly-Seber spatial capture-recapture models by maximum likelihood.
  • SimDs: source code to simulation line transect distance sampling surveys with animals moving in 2D.

Talks/Posters

  • Accounting for animal movement in distance sampling. (Aug 2017) Intermediate Distance Sampling Workshop, St Andrews.
  • Behaviour-switching animal movement with distance sampling. (Jul 2017). EURING conference, Barcelona.
  • Incoporating animal movement with distance sampling and spatial capture-recapture. (Jun 2017). Summer Meeting for the National Centre for Statistical Ecology, Canterbury.
  • Counting animals in Statistical Ecology. (Nov 2016).St Andrews Mathematics Undergraduate Society, St Andrews.
  • Modelling movement in continuous-time spatial capture-recapture. (Oct 2016). Centre for Research into Ecological and Environmental Modelling, St Andrews.
  • The effect of animal movement on distance sampling. (Aug 2016)Advanced Distance Sampling Workshop, St Andrews.
  • Incorporating animal movement into distance sampling. (Jul 2016). International Statistical Ecology Conference , Seattle.
  • Path integrals in Ecology. (Jan 2016). Mathematics and Statistics School Research Day, St Andrews.
  • Encounters in Ecology. (Aug 2015) 38th Research Students' Conference in Probability and Statistics
  • The Effect of Animal Movement on Line Transect Estimates of Abundance. (Jul 2013). Summer meeting for the National Centre for Statistical Ecology, Lowestoft.