All Outputs (40)

Effects of environmental conditions on mate fidelity in a socially monogamous seabird (2025)
Journal Article
Lewis, S., Butler, A., Wanless, S., Newell, M. A., Harris, M. P., Burthe, S. J., Gunn, C. M., Howells, R. J., & Daunt, F. (in press). Effects of environmental conditions on mate fidelity in a socially monogamous seabird. Animal Behaviour,

In iteroparous, socially monogamous species, individuals vary in the extent of mate fidelity across breeding attempts, often with important fitness consequences. Numerous studies have demonstrated intrinsic drivers of mate fidelity, notably previous... Read More about Effects of environmental conditions on mate fidelity in a socially monogamous seabird.

Count of Northern Gannets on the Bass Rock in July 2024 (2025)
Report
Burton, E., Lewis, S., Wanless, S., Wade, T., & Nichol, C. (2025). Count of Northern Gannets on the Bass Rock in July 2024

A drone survey of Northern Gannets on the Bass Rock was carried out on 29 July 2024, following the protocol of the earlier surveys in 2023 and 2022. The resulting orthomosaic vertical image covered c.97% of the colony. Three independent counts of thi... Read More about Count of Northern Gannets on the Bass Rock in July 2024.

Bass Rock gannetry count in 2023 (2024)
Newspaper / Magazine
Harris, M., Wanless, S., Burton, E., Tyndall, A., Nichol, C., Wade, T., & Lewis, S. (2024). Bass Rock gannetry count in 2023

Variation and correlation in the timing of breeding of North Atlantic seabirds across multiple scales (2022)
Journal Article
Keogan, K., Daunt, F., Wanless, S., Phillips, R. A., Alvarez, D., Anker-Nilssen, T., Barrett, R. T., Bech, C., Becker, P. H., Berglund, P.-A., Bouwhuis, S., Burr, Z. M., Chastel, O., Christensen-Dalsgaard, S., Descamps, S., Diamond, T., Elliott, K., Erikstad, K.-E., Harris, M., Hentati-Sundberg, J., …Phillimore, A. B. (2022). Variation and correlation in the timing of breeding of North Atlantic seabirds across multiple scales. Journal of Animal Ecology, 91(9), 1797-1812. https://doi.org/10.1111/1365-2656.13758

Timing of breeding, an important driver of fitness in many populations, is widely studied in the context of global change, yet despite considerable efforts to identify environmental drivers of seabird nesting phenology, for most populations we la... Read More about Variation and correlation in the timing of breeding of North Atlantic seabirds across multiple scales.

No evidence for fitness signatures consistent with increasing trophic mismatch over 30 years in a population of European shag Phalacrocorax aristotelis (2020)
Journal Article
Keogan, K., Lewis, S., Howells, R. J., Newell, M. A., Harris, M. P., Burthe, S., Phillips, R. A., Wanless, S., Phillimore, A. B., & Daunt, F. (2021). No evidence for fitness signatures consistent with increasing trophic mismatch over 30 years in a population of European shag Phalacrocorax aristotelis. Journal of Animal Ecology, 90(2), 432-446. https://doi.org/10.1111/1365-2656.13376

As temperatures rise, timing of reproduction is changing at different rates across trophic levels, potentially resulting in asynchrony between consumers and their resources. The match-mismatch hypothesis (MMH) suggests that trophic asynchrony will ha... Read More about No evidence for fitness signatures consistent with increasing trophic mismatch over 30 years in a population of European shag Phalacrocorax aristotelis.

Global phenological insensitivity to shifting ocean temperatures among seabirds (2018)
Journal Article
Keogan, K., Daunt, F., Wanless, S., Phillips, R. A., Walling, C. A., Agnew, P., Ainley, D. G., Anker-Nilssen, T., Ballard, G., Barrett, R. T., Barton, K. J., Bech, C., Becker, P., Berglund, P.-A., Bollache, L., Bond, A. L., Bouwhuis, S., Bradley, R. W., Burr, Z. M., Camphuysen, K., …Lewis, S. (2018). Global phenological insensitivity to shifting ocean temperatures among seabirds. Nature Climate Change, 8(4), 313-318. https://doi.org/10.1038/s41558-018-0115-z

Reproductive timing in many taxa plays a key role in determining breeding productivity(1), and is often sensitive to climatic conditions(2). Current climate change may alter the timing of breeding at different rates across trophic levels, potentially... Read More about Global phenological insensitivity to shifting ocean temperatures among seabirds.

Causes and consequences of individual variability and specialization in foraging and migration strategies of seabirds (2017)
Journal Article
Phillips, R., Lewis, S., González-Solís, J., & Daunt, F. (2017). Causes and consequences of individual variability and specialization in foraging and migration strategies of seabirds. Marine Ecology Progress Series, 578, 117-150. https://doi.org/10.3354/meps12217

Technological advances in recent years have seen an explosion of tracking and stable isotope studies of seabirds, often involving repeated measures from the same individuals. This wealth of new information has allowed the examination of the extensive... Read More about Causes and consequences of individual variability and specialization in foraging and migration strategies of seabirds.

Contrasting drivers of reproductive ageing in albatrosses (2017)
Journal Article
Froy, H., Lewis, S., Nussey, D. H., Wood, A. G., & Phillips, R. A. (2017). Contrasting drivers of reproductive ageing in albatrosses. Journal of Animal Ecology, 86(5), 1022-1032. https://doi.org/10.1111/1365-2656.12712

1. Age-related variation in reproductive performance is ubiquitous in wild vertebrate populations and has important consequences for population and evolutionary dynamics.

2. The ageing trajectory is shaped by both within-individual processes, such... Read More about Contrasting drivers of reproductive ageing in albatrosses.

Telomere length measurement by qPCR in birds is affected by storage method of blood samples (2017)
Journal Article
Reichert, S., Froy, H., Boner, W., Burg, T. M., Daunt, F., Gillespie, R., Griffiths, K., Lewis, S., Phillips, R. A., Nussey, D. H., & Monaghan, P. (2017). Telomere length measurement by qPCR in birds is affected by storage method of blood samples. Oecologia, 184(2), 341-350. https://doi.org/10.1007/s00442-017-3887-3

Given the potential role of telomeres as biomarkers of individual health and ageing, there is an increasing interest in studying telomere dynamics in a wider range of taxa in the fields of ecology and evolutionary biology. Measuring telomere length a... Read More about Telomere length measurement by qPCR in birds is affected by storage method of blood samples.

Contrasting responses of male and female foraging effort to year-round wind conditions (2015)
Journal Article
Lewis, S., Phillips, R. A., Burthe, S. J., Wanless, S., & Daunt, F. (2015). Contrasting responses of male and female foraging effort to year-round wind conditions. Journal of Animal Ecology, 84(6), 1490-1496. https://doi.org/10.1111/1365-2656.12419

There is growing interest in the effects of wind on wild animals, given evidence that wind speeds are increasing and becoming more variable in some regions, particularly at temperate latitudes. Wind may alter movement patterns or foraging ability, wi... Read More about Contrasting responses of male and female foraging effort to year-round wind conditions.

Indirect effects of parasitism: costs of infection to other individuals can be greater than direct costs borne by the host (2015)
Journal Article
Granroth-Wilding, H. M. V., Burthe, S. J., Lewis, S., Herborn, K. A., Takahashi, E. A., Daunt, F., & Cunningham, E. J. A. (2015). Indirect effects of parasitism: costs of infection to other individuals can be greater than direct costs borne by the host. Proceedings of the Royal Society B: Biological Sciences, 282(1811), Article 20150602. https://doi.org/10.1098/rspb.2015.0602

Parasitic infection has a direct physiological cost to hosts but may also alter how hosts interact with other individuals in their environment. Such indirect effects may alter both host fitness and the fitness of other individuals in the host's socia... Read More about Indirect effects of parasitism: costs of infection to other individuals can be greater than direct costs borne by the host.

Age-Related Variation in Foraging Behaviour in the Wandering Albatross at South Georgia: No Evidence for Senescence (2015)
Journal Article
Froy, H., Lewis, S., Catry, P., Bishop, C. M., Forster, I. P., Fukuda, A., Higuchi, H., Phalan, B., Xavier, J. C., Nussey, D. H., & Phillips, R. A. (2015). Age-Related Variation in Foraging Behaviour in the Wandering Albatross at South Georgia: No Evidence for Senescence. PLOS ONE, 10(1), Article e0116415. https://doi.org/10.1371/journal.pone.0116415

Age-related variation in demographic rates is now widely documented in wild vertebrate systems, and has significant consequences for population and evolutionary dynamics. However, the mechanisms underpinning such variation, particularly in later life... Read More about Age-Related Variation in Foraging Behaviour in the Wandering Albatross at South Georgia: No Evidence for Senescence.

Parasitism in early life: environmental conditions shape within-brood variation in responses to infection (2014)
Journal Article
Granroth-Wilding, H. M. V., Burthe, S. J., Lewis, S., Reed, T. E., Herborn, K. A., Newell, M. A., Takahashi, E. A., Daunt, F., & Cunningham, E. J. A. (2014). Parasitism in early life: environmental conditions shape within-brood variation in responses to infection. Ecology and Evolution, 4(17), 3408-3419. https://doi.org/10.1002/ece3.1192

Parasites play key ecological and evolutionary roles through the costs they impose on their host. In wild populations, the effect of parasitism is likely to vary considerably with environmental conditions, which may affect the availability of resourc... Read More about Parasitism in early life: environmental conditions shape within-brood variation in responses to infection.

Longitudinal bio-logging reveals interplay between extrinsic and intrinsic carry-over effects in a long-lived vertebrate (2014)
Journal Article
Daunt, F., Reed, T. E., Newell, M., Burthe, S., Phillips, R. A., Lewis, S., & Wanless, S. (2014). Longitudinal bio-logging reveals interplay between extrinsic and intrinsic carry-over effects in a long-lived vertebrate. Ecology, 95(8), 2077-2083. https://doi.org/10.1890/13-1797.1

Carry-over effects have major implications for individual fitness and population and evolutionary dynamics. The strength of these effects is dependent on an individual's intrinsic performance and the environmental conditions it experiences. However,... Read More about Longitudinal bio-logging reveals interplay between extrinsic and intrinsic carry-over effects in a long-lived vertebrate.

Density-dependent foraging and colony growth in a pelagic seabird species under varying environmental conditions (2013)
Journal Article
Davies, R., Wanless, S., Lewis, S., & Hamer, K. (2013). Density-dependent foraging and colony growth in a pelagic seabird species under varying environmental conditions. Marine Ecology Progress Series, 485, 287-294. https://doi.org/10.3354/meps10348

Intra-specific competition for food resources affects both foraging behaviour and population growth rates in many species, highlighting a need to better understand how changing environmental conditions affect individuals in populations of different s... Read More about Density-dependent foraging and colony growth in a pelagic seabird species under varying environmental conditions.

Age-related variation in reproductive traits in the wandering albatross: evidence for terminal improvement following senescence (2013)
Journal Article
Froy, H., Phillips, R. A., Wood, A. G., Nussey, D. H., & Lewis, S. (2013). Age-related variation in reproductive traits in the wandering albatross: evidence for terminal improvement following senescence. Ecology Letters, 16(5), 642-649. https://doi.org/10.1111/ele.12092

The processes driving age-related variation in demographic rates are central to understanding population and evolutionary ecology. An increasing number of studies in wild vertebrates find evidence for improvements in reproductive performance traits i... Read More about Age-related variation in reproductive traits in the wandering albatross: evidence for terminal improvement following senescence.

Intrinsic determinants of a population trend in timing of breeding in the wandering albatross (2012)
Journal Article
Lewis, S., Nussey, D. H., Wood, A. G., Croxall, J. P., & Phillips, R. A. (2012). Intrinsic determinants of a population trend in timing of breeding in the wandering albatross. Oikos, 121(12), 2061-2071. https://doi.org/10.1111/j.1600-0706.2012.20293.x

Numerous studies of wild animal species have documented that population level responses to environmental change are underpinned by individual level phenotypic plasticity. However, where the relationship between an individual trait and a climate varia... Read More about Intrinsic determinants of a population trend in timing of breeding in the wandering albatross.

Overlap between vulnerable top predators and fisheries in the Benguela upwelling system: implications for marine protected areas (2009)
Journal Article
Pichegru, L., Ryan, P., Le Bohec, C., van der Lingen, C., Navarro, R., Petersen, S., Lewis, S., van der Westhuizen, J., & Grémillet, D. (2009). Overlap between vulnerable top predators and fisheries in the Benguela upwelling system: implications for marine protected areas. Marine Ecology Progress Series, 391, 199-208. https://doi.org/10.3354/meps08283

Industrial-scale fisheries are often thought to reduce food availability for top predators. It is essential to estimate the spatial and temporal overlap over a fine scale between fisheries and predators during their breeding season, when their energy... Read More about Overlap between vulnerable top predators and fisheries in the Benguela upwelling system: implications for marine protected areas.

Underwater wingbeats extend depth and duration of plunge dives in northern gannets Morus bassanus (2009)
Journal Article
Ropert-Coudert, Y., Daunt, F., Kato, A., Ryan, P. G., Lewis, S., Kobayashi, K., Mori, Y., Grémillet, D., & Wanless, S. (2009). Underwater wingbeats extend depth and duration of plunge dives in northern gannets Morus bassanus. Journal of Avian Biology, 40(4), 380-387. https://doi.org/10.1111/j.1600-048x.2008.04592.x

Plunge-diving is a specialised hunting tactic used by some avian predators to overcome the high buoyancy encountered near the water surface and surprise prey. However, plunge-diving is effective only to a certain depth; to access deeper prey, birds n... Read More about Underwater wingbeats extend depth and duration of plunge dives in northern gannets Morus bassanus.

Effects of extrinsic and intrinsic factors on breeding success in a long lived seabird (2009)
Journal Article
Lewis, S., Elston, D. A., Daunt, F., Cheney, B., & Thompson, P. M. (2009). Effects of extrinsic and intrinsic factors on breeding success in a long lived seabird. Oikos, 118(4), 521-528. https://doi.org/10.1111/j.1600-0706.2008.17308.x

There is growing concern over the impacts of climate change on animal species. Many studies have demonstrated impacts of climate change at the population level, and density dependent effects of climate are frequently reported. However, there is an in... Read More about Effects of extrinsic and intrinsic factors on breeding success in a long lived seabird.