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Xavier A. Harrison
Researcher at University of Exeter
Publications - 59
Citations - 4420
Xavier A. Harrison is an academic researcher from University of Exeter. The author has contributed to research in topics: Population & Microbiome. The author has an hindex of 19, co-authored 51 publications receiving 3233 citations. Previous affiliations of Xavier A. Harrison include University of Sheffield & Zoological Society of London.
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Journal ArticleDOI
A brief introduction to mixed effects modelling and multi-model inference in ecology.
Xavier A. Harrison,Lynda Donaldson,Lynda Donaldson,Maria Eugenia Correa-Cano,Julian C. Evans,Julian C. Evans,David N. Fisher,David N. Fisher,Cecily E. D. Goodwin,Beth S. Robinson,David J. Hodgson,Richard Inger +11 more
TL;DR: This overview should serve as a widely accessible code of best practice for applying LMMs to complex biological problems and model structures, and in doing so improve the robustness of conclusions drawn from studies investigating ecological and evolutionary questions.
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Using observation-level random effects to model overdispersion in count data in ecology and evolution
TL;DR: Simulations show that in cases where overdispersion is caused by random extra-Poisson noise, or aggregation in the count data, observation-level random effects yield more accurate parameter estimates compared to when overdisPersion is simply ignored, and that their ability to minimise bias is not uniform across all types of over Dispersion and must be applied judiciously.
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Carry‐over effects as drivers of fitness differences in animals
TL;DR: Carry-over effects are likely to be far more widespread than currently indicated, and they could feasibly be responsible for a large amount of the observed variation in performance among individuals, and warrant a wealth of new research designed specifically to decompose components of variation in fitness attributes related to processes across and within seasons.
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A comparison of observation-level random effect and Beta-Binomial models for modelling overdispersion in Binomial data in ecology & evolution
TL;DR: Simulation results suggest that OLRE are a useful tool for modelling overdispersion in Binomial data, but that they do not perform well in all circumstances and researchers should take care to verify the robustness of parameter estimates of OLRE models.
Journal ArticleDOI
Fifty important research questions in microbial ecology
Rachael E. Antwis,Sarah M. Griffiths,Xavier A. Harrison,Paz Aranega-Bou,Andres N. Arce,Aimee S. Bettridge,Francesca L. Brailsford,Alexandre B. de Menezes,Andrew Devaynes,Kristian M. Forbes,Ellen L. Fry,Ian Goodhead,Erin Haskell,Chloe Heys,Chloe E. James,Sarah R. Johnston,Gillian R. Lewis,Zenobia Lewis,Michael C. Macey,Alan J. McCarthy,James E. McDonald,Nasmille L. Mejia-Florez,David O'Brien,Chloe Orland,Marco Pautasso,William D. K. Reid,Heather A. Robinson,Kenneth Wilson,William J. Sutherland +28 more
TL;DR: 50 research questions of fundamental importance to the science or application of microbial ecology are identified, with the intention of summarising the field and bringing focus to new research avenues.