My work explores the structure, function and composition of food webs. I'm particularly interested in the scaling of ecology and how we can use information gained at the level of the individual to learn about population and community-level dynamics. To this end, I use multi-species ecosystem models, built on individual-level processes, to investigate how food webs might respond to past, present and future change. I also use population models like Stock Synthesis (SS3) for stock assessment, forecasting and advice.
I'm also very interested in animal movement. My work considers how telemetry data can be used to investigate the behaviour, seasonality and stock structure of marine fish. I actively contribute to ICES working groups (HAWG, NIPAG & WGEF) and see tagging data as a small window into a marine world that it often otherwise unobservable.
I code in R and Julia. I model things. I love a good graph.
Recently taught on MSc Biodiveristy and Conservation (APS603) at the University of Sheffield
Demonstrated on data analysis in R courses (APS 240 & APS405) at the University of Sheffield
I have also authored a series of tutorials for coding in Julia which are freely available on my github repo
I actively collaborate on all things food webs and tagging with the BecksLab at the University of Sheffield, as well as colleagues at the University of Bristol, University of Bangor, Université de Montréal, University of Tasmania, DTU, Cefas, RSPB and CEH
Researcher at the Department of Aquatic Resources, SLU (Jan 2022 - present)
Postdoc in Food Webs, Stability and Climate Change in the School of BioSciences, University of Sheffield (May 2020 - Dec 2021)
Fisheries Scientist, Cefas (Oct 2018 - Apr 2020)
PhD at the University of Sheffield & University of Tasmania (Oct 2014 - Sep 2018)
I have supervised several MSc and MRes students at the University of Sheffield and contributed to PhD projects at Sheffield, Cefas, DTU and SLU. If you have an idea or want to discuss studentship opporunities please do ping me an email, I look forward to hearing from you.
Simmons BI, Blyth PSA, Blanchard JL, Clegg T, Delmas E, Garnier A, Griffiths CA, Jacob U, Pennekamp F, Petchey OL , Poisot T et al (2021) Refocusing multiple stressor research around the targets and scales of ecological impacts. Nature Ecology & Evolution, 5, 1478-1489.
Wright SR, Righton D, Naulaerts J, Schallert RJ, Bendall V, Griffiths CA, Castleton M, David-Gutierrez D, Madigan D, Beard A , Clingham E et al (2021) Fidelity of yellowfin tuna to seamount and island foraging grounds in the central South Atlantic Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 172, 103513
Wright SR, Righton D, Naulaerts J, Schallert RJ, Griffiths CA, Chapple T, Madigan D, Laptikhovsky V, Bendall V, Hobbs R , Beare D et al (2021) Yellowfin Tuna Behavioural Ecology and Catchability in the South Atlantic: The Right Place at the Right Time (and Depth). Frontiers in Marine Science, 8, 664593
Spence M, Griffiths CA, Waggitt J, Bannister H, Thorpe R, Rossberg A & Lynam C (2021) Sustainable fishing can lead to improvements in marine ecosystem status: an ensemble-model forecast of the North Sea ecosystem. Marine Ecology Progress Series, 680, 207-221
Griffiths CA, Wright SR, Silva JF, Ellis JR, Righton DA & McCully Phillips SR (2020) Horizontal and vertical movements of starry smooth-hound Mustelus asterias in the northeast Atlantic. PLoS ONE, 15(10), e0239480
Spence MA, Bannister HJ, Ball JE, Dolder PJ, Griffiths CA & Thorpe RB (2020) LeMaRns: a length-based multi-species analysis by numerical simulation in R. PLoS ONE, 15(2), e0227767
Adam T, Griffiths CA, Leos-Barajas V, Meese EN, Lowe CG, Blackwell PG, Righton D & Langrock R (2019) Joint modelling of multi-scale animal movement data using hierarchical hidden Markov models. Methods in Ecology and Evolution, 10(9), 1536-1550
Griffiths CA, Patterson TA, Blanchard J, Righton DA, Wright SR, Pitchford JW & Blackwell PG (2018) Scaling marine fish movement behavior from individuals to populations. Ecology and Evolution, 8(14), 7031-7043