Outputs (20)

Drivers of the changing abundance of European birds at two spatial scales (2023)
Journal Article
Gregory, R., Eaton, M. A., Burfield, I., Grice, P. V., Howard, C., Klvaňová, A., Stephens, P., Willis, S., Woodward, I. D., & Burns, F. (2023). Drivers of the changing abundance of European birds at two spatial scales. Philosophical Transactions of the Royal Society B: Biological Sciences, 378(1881), Article 20220198. https://doi.org/10.1098/rstb.2022.0198

Detecting biodiversity change and identifying its causes is challenging because biodiversity is multifaceted and temporal data often contain bias. Here, we model temporal change in species' abundance and biomass by using extensive data describing the... Read More about Drivers of the changing abundance of European birds at two spatial scales.

Remote monitoring of short-term body mass variation in savanna ungulates (2023)
Journal Article
Fuentes-Allende, N., Stephens, P., MacTavish, L., MacTavish, D., & Willis, S. (online). Remote monitoring of short-term body mass variation in savanna ungulates. Remote Sensing in Ecology and Conservation, 9(5), 707-723. https://doi.org/10.1002/rse2.338

Large herbivores in seasonal environments often experience mass variation due to temporal changes in the availability of critical resources like water and forage, as well as due to breeding events. Yet the documentation of mass variation in mammals o... Read More about Remote monitoring of short-term body mass variation in savanna ungulates.

Where nothing stands still: quantifying nomadism in Australian arid-zone birds (2021)
Journal Article
Gibson, M. R., Runge, C. A., Stephens, P. A., Fuller, R. A., & Willis, S. G. (2022). Where nothing stands still: quantifying nomadism in Australian arid-zone birds. Landscape Ecology, 37(1), 191-208. https://doi.org/10.1007/s10980-021-01343-2

Context: Nomadism is a movement strategy in response to non-seasonal environmental variability. Knowledge of nomadic species movements is poor but is necessary to understand life histories and develop appropriate conservation strategies. Objectives:... Read More about Where nothing stands still: quantifying nomadism in Australian arid-zone birds.

Using indices of species’ potential range to inform conservation status (2021)
Journal Article
Mason, T. H., Stephens, P. A., Gilbert, G., Green, R. E., Wilson, J. D., Jennings, K., Allen, J. R., Huntley, B., Howard, C., & Willis, S. G. (2021). Using indices of species’ potential range to inform conservation status. Ecological Indicators, 123, https://doi.org/10.1016/j.ecolind.2021.107343

Assessments of conservation status are typically based on short-term extinction risk, but the value of indicators that compare the current state of species (e.g., abundance or distribution) to potential baselines is increasingly recognised. The use o... Read More about Using indices of species’ potential range to inform conservation status.

Disentangling the relative roles of climate and land cover change in driving the long-term population trends of European migratory birds (2020)
Journal Article
Howard, C., Stephens, P., Pearce-Higgins, J., Gregory, R., Butchart, S., & Willis, S. (2020). Disentangling the relative roles of climate and land cover change in driving the long-term population trends of European migratory birds. Diversity and Distributions, 26(11), 1442-1455. https://doi.org/10.1111/ddi.13144

Aim: Global declines in the populations of migratory species have been attributed largely to climate change and anthropogenic habitat change. However, the relative contribution of these factors on species’ breeding and non‐breeding ranges is unclear.... Read More about Disentangling the relative roles of climate and land cover change in driving the long-term population trends of European migratory birds.

Automated detection and classification of birdsong: An ensemble approach (2020)
Journal Article
Brooker, S. A., Stephens, P. A., Whittingham, M. J., & Willis, S. G. (2020). Automated detection and classification of birdsong: An ensemble approach. Ecological Indicators, 117, Article 106609. https://doi.org/10.1016/j.ecolind.2020.106609

The avian dawn chorus presents a challenging opportunity to test autonomous recording units (ARUs) and associated recogniser software in the types of complex acoustic environments frequently encountered in the natural world. To date, extracting infor... Read More about Automated detection and classification of birdsong: An ensemble approach.

Population responses of bird populations to climate change on two continents vary with species’ ecological traits but not with direction of change in climate suitability (2019)
Journal Article
Mason, L. R., Green, R. E., Howard, C., Stephens, P. A., Willis, S. G., Aunins, A., Brotons, L., Chodkiewicz, T., Chylarecki, P., Escandell, V., Foppen, R. P., Herrando, S., Husby, M., Jiguet, F., Kålås, J. A., Lindström, Å., Massimino, D., Moshøj, C., Nellis, R., Paquet, J.-Y., …Gregory, R. D. (2019). Population responses of bird populations to climate change on two continents vary with species’ ecological traits but not with direction of change in climate suitability. Climatic Change, 157(3-4), 337-354. https://doi.org/10.1007/s10584-019-02549-9

Climate change is a major global threat to biodiversity with widespread impacts on ecological communities. Evidence for beneficial impacts on populations is perceived to be stronger and more plentiful than that for negative impacts, but few studies h... Read More about Population responses of bird populations to climate change on two continents vary with species’ ecological traits but not with direction of change in climate suitability.

The limits to population density in birds and mammals (2019)
Journal Article
Stephens, P., Vieira, M., Willis, S., & Carbone, C. (2019). The limits to population density in birds and mammals. Ecology Letters, 22(4), 654-663. https://doi.org/10.1111/ele.13227

We address two fundamental ecological questions: what are the limits to animal population density and what determines those limits? We develop simple alternative models to predict population limits in relation to body mass. A model assuming that with... Read More about The limits to population density in birds and mammals.

Flight range, fuel load, and the impact of climate change on the journeys of migrant birds (2018)
Journal Article
Howard, C., Stephens, P., Tobias, J., Sheard, C., Butchart, S., & Willis, S. (2018). Flight range, fuel load, and the impact of climate change on the journeys of migrant birds. Proceedings of the Royal Society B: Biological Sciences, 285(1873), Article 20172329. https://doi.org/10.1098/rspb.2017.2329

Climate change is predicted to increase migration distances for many migratory species, but the physiological and temporal implications of longer migratory journeys have not been explored. Here, we combine information about species' flight range pote... Read More about Flight range, fuel load, and the impact of climate change on the journeys of migrant birds.

Global patterns in the divergence between phylogenetic diversity and species richness in terrestrial birds (2017)
Journal Article
Voskamp, A., Baker, D., Stephens, P., Valdes, P., & Willis, S. (2017). Global patterns in the divergence between phylogenetic diversity and species richness in terrestrial birds. Journal of Biogeography, 44(4), 709-721. https://doi.org/10.1111/jbi.12916

Aim The conservation value of sites is often based on species richness (SR).However, metrics of phylogenetic diversity (PD) reflect a community’s evolu-tionary potential and reveal the potential for additional conservation valueabove that based purely... Read More about Global patterns in the divergence between phylogenetic diversity and species richness in terrestrial birds.