Statistician
PhD Student 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 PhD student at the University of St Andrews, based in the Centre for Research into Ecological and Environmental Modelling.

My PhD is entitled Incorporating Animal Movement with Distance Sampling and Spatial Capture-Recapture
Supervised by Prof. Stephen T. Buckland.

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

Education

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

Employment

  • 2017 – Present
    School co-coordinator for Academic Skills Project, CAPOD
  • 2014 – Present
    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.
  • madness_hmms: code to fit Poisson HMMs with R, RcppArmadillo and Template Model Builder.
  • SimDs: source code to simulate 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.