Outputs (58)

Restoration of river connectivity enables long-distance spawning migrations in a potamodromous fish (2025)
Journal Article
Błońska, D., Tarkan, A. S., Andreou, D., Bolland, J. D., Davies, P., Dodd, J. R., Gillingham, P., Roberts, C. G., Amat-Trigo, F., Aksu, S., Hindes, A., Palder, O. J., Yeldham, M., & Britton, J. R. (2025). Restoration of river connectivity enables long-distance spawning migrations in a potamodromous fish. Journal of environmental management, 377, Article 124646. https://doi.org/10.1016/j.jenvman.2025.124646

Rivers across the world are increasingly fragmented due to anthropogenic barriers, with the restoration of connectivity often using fish passes. Fish passes are, however, usually designed for anadromous species, despite ecologically important non-ana... Read More about Restoration of river connectivity enables long-distance spawning migrations in a potamodromous fish.

The effectiveness of a fish-friendly pumping station for critically endangered European eel; An assessment using live eels, fish-mounted sensors and passive sensors (2025)
Journal Article
Evans, O., Don, A., Tuhtan, J. A., Toming, G., Williams, C. F., Price, J. C., Wright, R. M., Bell, C., & Bolland, J. D. (2025). The effectiveness of a fish-friendly pumping station for critically endangered European eel; An assessment using live eels, fish-mounted sensors and passive sensors. Ecological engineering, 213, Article 107526. https://doi.org/10.1016/j.ecoleng.2025.107526

Fish-friendly pumps may provide safe downstream passage for seaward migrating silver European eel, Anguilla anguilla, at pumping stations but further research into their effectiveness is urgently required. This study uniquely combined health assessme... Read More about The effectiveness of a fish-friendly pumping station for critically endangered European eel; An assessment using live eels, fish-mounted sensors and passive sensors.

The influence of hydrodynamics on the behaviour of European Eel at anthropogenic structures (2025)
Thesis
Collier, S. (2025). The influence of hydrodynamics on the behaviour of European Eel at anthropogenic structures. (Thesis). University of Hull. https://hull-repository.worktribe.com/output/5086316

Highly fragmented river networks in the UK pose a serious threat to the viability of anadromous fish, including the critically endangered European eel (Anguilla anguilla), thus necessitating remediation at anthropogenic riverine obstructions to resto... Read More about The influence of hydrodynamics on the behaviour of European Eel at anthropogenic structures.

Genotype But Not Body Shape Predicts River Migration Success in Atlantic Salmon (2024)
Journal Article
Moccetti, P., Bolland, J. D., Adams, C. E., Rodger, J. R., Honkanen, H. M., Newton, M., Lothian, A. J., Nunn, A. D., & Joyce, D. A. (2024). Genotype But Not Body Shape Predicts River Migration Success in Atlantic Salmon. Ecology and Evolution, 14(12), Article e70682. https://doi.org/10.1002/ece3.70682

Migratory species typically undertake demanding long-distance journeys, across different habitat types during which they are exposed to multiple natural and anthropogenic stressors. Mortality during migration is typically high and may be human induce... Read More about Genotype But Not Body Shape Predicts River Migration Success in Atlantic Salmon.

Two decades of body length measurements of larval and juvenile fish populations in English rivers (2024)
Journal Article
Ainsworth, R. F., Vickers, L. H., Bolland, J. D., Taylor, M. J., Harvey, J. P., Noble, R. A., Cowx, I. G., & Nunn, A. D. (2024). Two decades of body length measurements of larval and juvenile fish populations in English rivers. Scientific Data, 11, Article 1271. https://doi.org/10.1038/s41597-024-04127-w

Long-term datasets provide context and understanding of complex ecological processes, including temporal variations in species diversity and ecosystem dynamics. This dataset is comprised of body length measurements (mm) of more than 380,000 larval or... Read More about Two decades of body length measurements of larval and juvenile fish populations in English rivers.

Two decades of body length measurements in size-structured larval and juvenile fish populations in English rivers (2024)
Data
Ainsworth, R., Vickers, L., Bolland, J., Harvey, J., Taylor, M., Cowx, I., Noble, R., & Nunn, A. (2024). Two decades of body length measurements in size-structured larval and juvenile fish populations in English rivers. [Data]. https://doi.org/10.5281/zenodo.10552216

Long term ecological datasets are valuable in providing context and understanding to complex ecological processes that occur over broad temporal scales, and provide a baseline for analysing change. Monitoring of fish populations in UK waterbodies and... Read More about Two decades of body length measurements in size-structured larval and juvenile fish populations in English rivers.

Inter-annual variation in movements and passage of seaward migrating European eels at a shrouded Archimedean screw pumping station (2024)
Journal Article
Evans, O. J., Carter, L. J., Hutchinson, T., Don, A., Wright, R. M., Baktoft, H., Pauwels, I. S., & Bolland, J. D. (2024). Inter-annual variation in movements and passage of seaward migrating European eels at a shrouded Archimedean screw pumping station. Ecological engineering, 209, Article 107389. https://doi.org/10.1016/j.ecoleng.2024.107389

The construction of less damaging (here called fish-friendly) pumping stations has taken place in recent years, but it is unknown if they provide efficient and timely passage to migratory fish, such as European eel (Anguilla anguilla (L.)). The pump... Read More about Inter-annual variation in movements and passage of seaward migrating European eels at a shrouded Archimedean screw pumping station.

Rethinking fish-friendliness of pumps by shifting focus to both safe and timely fish passage for effective conservation (2024)
Journal Article
Evans, O. J., Norman, J., Carter, L. J., Hutchinson, T., Don, A., Wright, R. M., Tuhtan, J. A., Toming, G., & Bolland, J. D. (2024). Rethinking fish-friendliness of pumps by shifting focus to both safe and timely fish passage for effective conservation. Scientific reports, 14(1), Article 17888. https://doi.org/10.1038/s41598-024-67870-5

Globally, catadromous freshwater eels of the genus Anguilla are of conservation concern, including critically endangered European eel (Anguilla anguilla). Pumping stations that move river water to a higher elevation severely impact eels during their... Read More about Rethinking fish-friendliness of pumps by shifting focus to both safe and timely fish passage for effective conservation.

Spatial ecology and population dynamics of brown trout Salmo trutta L. in reservoirs and headwater tributaries (2024)
Journal Article
Dodd, J. R., Noble, R. A., Nunn, A. D., Owen, H. M., Moccetti, P., Harvey, J. P., Wallace, L., Gillespie, B., Joyce, D. A., & Bolland, J. D. (2025). Spatial ecology and population dynamics of brown trout Salmo trutta L. in reservoirs and headwater tributaries. Journal of fish biology, 106(5), 1495-1509. https://doi.org/10.1111/jfb.15814

This investigation compared the spatial ecology and population dynamics of brown trout Salmo trutta L. between reservoirs with (impact; Langsett Reservoir) and without (control; Grimwith Reservoir) barriers to fish movements into headwater tributarie... Read More about Spatial ecology and population dynamics of brown trout Salmo trutta L. in reservoirs and headwater tributaries.

Movements and habitat use of native and invasive piscivorous fishes in a temperate and channelized lowland river (2024)
Journal Article
Nolan, E. T., Hindes, A. M., Bolland, J. D., Davies, P., Gutmann Roberts, C., Tarkan, A. S., & Britton, J. R. (2024). Movements and habitat use of native and invasive piscivorous fishes in a temperate and channelized lowland river. Hydrobiologia, https://doi.org/10.1007/s10750-024-05533-2

Lowland temperate rivers provide important habitats for piscivorous fishes, but with their year-round spatial and temporal habitat use is often poorly understood, including their use of off-channel habitats. Here, the movements and habitat use of the... Read More about Movements and habitat use of native and invasive piscivorous fishes in a temperate and channelized lowland river.