All Outputs (49)

Individual repeatability in the timing of river entry indicates the strong influence of photoperiod in the spawning migrations of iteroparous twaite shad Alosa fallax (2023)
Journal Article
Yeldham, M. I., Britton, J. R., Crundwell, C., Davies, P., Dodd, J. R., Nunn, A. D., …Bolland, J. D. (2023). Individual repeatability in the timing of river entry indicates the strong influence of photoperiod in the spawning migrations of iteroparous twaite shad Alosa fallax. Hydrobiologia, https://doi.org/10.1007/s10750-023-05168-9

The timing of entry into freshwater by mature anadromous fishes is an important component of their migration phenology. In iteroparous anadromous species, identifying the migration cues that influence the timing of entry into freshwater, and annual v... Read More about Individual repeatability in the timing of river entry indicates the strong influence of photoperiod in the spawning migrations of iteroparous twaite shad Alosa fallax.

Is shape in the eye of the beholder? Assessing landmarking error in geometric morphometric analyses on live fish (2023)
Journal Article
Moccetti, P., Rodger, J. R., Bolland, J. D., Kaiser-Wilks, P., Smith, R., Nunn, A. D., …Joyce, D. A. (2023). Is shape in the eye of the beholder? Assessing landmarking error in geometric morphometric analyses on live fish. PeerJ, 11, Article e15545. https://doi.org/10.7717/peerj.15545

Geometric morphometrics is widely used to quantify morphological variation between biological specimens, but the fundamental influence of operator bias on data reproducibility is rarely considered, particularly in studies using photographs of live an... Read More about Is shape in the eye of the beholder? Assessing landmarking error in geometric morphometric analyses on live fish.

A novel method for identifying coded tags recorded on aquatic acoustic monitoring systems (2022)
Journal Article
Lowe, C. D., Tregenza, N. J., Allen, C. J., Blow, G. E., Nuuttila, H., Bertelli, C. M., …Clarke, D. R. (2022). A novel method for identifying coded tags recorded on aquatic acoustic monitoring systems. Environmental monitoring and assessment, 194(11), Article 806. https://doi.org/10.1007/s10661-022-10500-2

Aquatic biotelemetry increasingly relies on using acoustic transmitters ('tags') that enable passive detection of tagged animals using fixed or mobile receivers. Both tracking methods are resource-limited, restricting the spatial area in which moveme... Read More about A novel method for identifying coded tags recorded on aquatic acoustic monitoring systems.

Understanding the impacts of exploitation and fragmentation on the upstream migrating, adult river lamprey (Lampetra fluviatilis [L.]): implications for conservation (2022)
Thesis
Jubb, W. M. (2022). Understanding the impacts of exploitation and fragmentation on the upstream migrating, adult river lamprey (Lampetra fluviatilis [L.]): implications for conservation. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4186773

Globally, freshwater ecosystems are heavily impacted by anthropogenic pressures, including fragmentation and exploitation. Consequently, many negative impacts are observed on numerous fish populations, especially anadromous species. Currently, there... Read More about Understanding the impacts of exploitation and fragmentation on the upstream migrating, adult river lamprey (Lampetra fluviatilis [L.]): implications for conservation.

Toward a decade of ocean science for sustainable development through acoustic animal tracking (2022)
Journal Article
Alós, J., Aarestrup, K., Abecasis, D., Afonso, P., Alonso‐Fernandez, A., Aspillaga, E., …Villegas-Ríos, D. (in press). Toward a decade of ocean science for sustainable development through acoustic animal tracking. Global change biology, https://doi.org/10.1111/gcb.16343

The ocean is a key component of the Earth's dynamics, providing a great variety of ecosystem services to humans. Yet, human activities are globally changing its structure and major components, including marine biodiversity. In this context, the Unite... Read More about Toward a decade of ocean science for sustainable development through acoustic animal tracking.

Individual movement variation in upstream-migrating sea lamprey Petromyzon marinus in a highly fragmented river (2022)
Journal Article
Davies, P., Britton, J. R., Nunn, A. D., Dodd, J. R., Bainger, C., Velterop, R., & Bolland, J. D. (in press). Individual movement variation in upstream-migrating sea lamprey Petromyzon marinus in a highly fragmented river. Freshwater biology, https://doi.org/10.1111/fwb.13869

Anthropogenic reductions in riverine connectivity can severely impede the migrations of anadromous species. In fragmented rivers, successful migrations depend on the ability of migrants to negotiate barriers or locate alternative passage routes. Howe... Read More about Individual movement variation in upstream-migrating sea lamprey Petromyzon marinus in a highly fragmented river.

Cumulative impacts of habitat fragmentation and the environmental factors affecting upstream migration in the threatened sea lamprey, Petromyzon marinus (2021)
Journal Article
Davies, P., Britton, J. R., Nunn, A. D., Dodd, J. R., Bainger, C., Velterop, R., & Bolland, J. D. (2021). Cumulative impacts of habitat fragmentation and the environmental factors affecting upstream migration in the threatened sea lamprey, Petromyzon marinus. Aquatic conservation : marine and freshwater ecosystems, 31(9), 2560-2574. https://doi.org/10.1002/aqc.3625

River ecosystems are often fragmented by artificial structures, such as weirs. For anadromous species, these structures can impede access to upstream spawning sites and ultimately lead to severe population declines. This study focused on the freshwat... Read More about Cumulative impacts of habitat fragmentation and the environmental factors affecting upstream migration in the threatened sea lamprey, Petromyzon marinus.

Downstream passage of silver European eel (Anguilla anguilla) at a pumping station with a gravity sluice (2020)
Journal Article
Baker, N. J., Wright, R. M., Cowx, I. G., Murphy, L. A., & Bolland, J. D. (2020). Downstream passage of silver European eel (Anguilla anguilla) at a pumping station with a gravity sluice. Ecological engineering, Article 106069. https://doi.org/10.1016/j.ecoleng.2020.106069

The European eel (Anguilla anguilla (L.)) is critically endangered after a multi-decadal decline. Anthropogenic disruption to downstream migration, including at water control structures such as pumping stations, is thought to be one of the contributi... Read More about Downstream passage of silver European eel (Anguilla anguilla) at a pumping station with a gravity sluice.

Environmental DNA metabarcoding provides enhanced detection of the European eel Anguilla anguilla and fish community structure in pumped river catchments (2020)
Journal Article
Griffiths, N. P., Bolland, J. D., Wright, R. M., Murphy, L. A., Donnelly, R. K., Watson, H. V., & Hänfling, B. (2020). Environmental DNA metabarcoding provides enhanced detection of the European eel Anguilla anguilla and fish community structure in pumped river catchments. Journal of fish biology, 97, 1375-1384. https://doi.org/10.1111/jfb.14497

© 2020 Fisheries Society of the British Isles The European eel Anguilla anguilla (eel hereafter) is critically endangered and has a catadromous life cycle, which means adult eels that live in pumped catchments must pass through pumps during their dow... Read More about Environmental DNA metabarcoding provides enhanced detection of the European eel Anguilla anguilla and fish community structure in pumped river catchments.

Evaluating the impact of hydropower on downstream migrating anguillid eels: Catchment-wide and fine-scale approaches to identify cost-effective solutions (2020)
Journal Article
Baker, N. J., Boubée, J., Lokman, P. M., & Bolland, J. D. (2020). Evaluating the impact of hydropower on downstream migrating anguillid eels: Catchment-wide and fine-scale approaches to identify cost-effective solutions. The Science of the total environment, 748, Article 141111. https://doi.org/10.1016/j.scitotenv.2020.141111

Hydropower is an increasingly popular source of renewable and ‘green’ (in terms of emissions) energy, but reduced longitudinal connectivity and diverting flow through turbines can have negative impacts on catadromous anguillid eel species that have d... Read More about Evaluating the impact of hydropower on downstream migrating anguillid eels: Catchment-wide and fine-scale approaches to identify cost-effective solutions.

Novel insights into the marine phase and river fidelity of anadromous twaite shad Alosa fallax in the UK and Ireland (2020)
Journal Article
Davies, P., Britton, R. J., Nunn, A. D., Dodd, J. R., Crundwell, C., Velterop, R., …Bolland, J. (2020). Novel insights into the marine phase and river fidelity of anadromous twaite shad Alosa fallax in the UK and Ireland. Aquatic conservation : marine and freshwater ecosystems, 30(7), 1291-1298. https://doi.org/10.1002/aqc.3343

© 2020 The Authors. Most research on anadromous fishes has been invested in their freshwater life-phases, resulting in a relatively sparse understanding of their spatial ecology during marine life-phases. However, understanding the marine dispersal... Read More about Novel insights into the marine phase and river fidelity of anadromous twaite shad Alosa fallax in the UK and Ireland.

Dynamic competition and resource partitioning during the early life of two widespread, abundant and ecologically similar fishes (2020)
Journal Article
Nunn, A. D., Vickers, L., Mazik, K., Bolland, J., Peirson, G., Axford, S., …Cowx, I. G. (2020). Dynamic competition and resource partitioning during the early life of two widespread, abundant and ecologically similar fishes. Hydrobiologia, 847, 2211-2224. https://doi.org/10.1007/s10750-020-04247-5

Competition and resource partitioning can have profound implications for individuals, populations and communities, and thus food webs, ecosystems and the management of biota and environments. In many species, the impacts of competition and resource p... Read More about Dynamic competition and resource partitioning during the early life of two widespread, abundant and ecologically similar fishes.

The Response of River-Resident Fish to Reservoir Freshet Releases of Varying Profiles Intended to Facilitate a Spawning Migration (2020)
Journal Article
Baker, N. J., Taylor, M. J., Harvey, J. P., Angelopoulos, N. V., Smith, M. A., Noble, R. A., …Bolland, J. (2020). The Response of River-Resident Fish to Reservoir Freshet Releases of Varying Profiles Intended to Facilitate a Spawning Migration. Water Resources Research, 56(6), Article e2018WR024196. https://doi.org/10.1029/2018WR024196

Natural hydrological regimes encompass varying seasonal flow characteristics that provide fish with cues and opportunities for upstream spawning migrations, but these flows are often modified/absent in regulated rivers. Compensatory artificial flows... Read More about The Response of River-Resident Fish to Reservoir Freshet Releases of Varying Profiles Intended to Facilitate a Spawning Migration.

Refinement of acoustic-tagging protocol for twaite shad Alosa fallax (Lacépède), a species sensitive to handling and sedation (2019)
Journal Article
Bolland, J. D., Nunn, A. D., Angelopoulos, N. V., Dodd, J. R., Davies, P., Gutmann Roberts, C., …Cowx, I. G. (2019). Refinement of acoustic-tagging protocol for twaite shad Alosa fallax (Lacépède), a species sensitive to handling and sedation. Fisheries research, 212, 183-187. https://doi.org/10.1016/j.fishres.2018.12.006

© 2018 Elsevier B.V. Telemetry investigations to gather essential information about fish migrations are reliant on the behaviour, condition and survival of the animals being unaltered by the tagging procedure. Twaite shad (Alosa fallax Lacépède; 'sha... Read More about Refinement of acoustic-tagging protocol for twaite shad Alosa fallax (Lacépède), a species sensitive to handling and sedation.

Comparison of attraction, entrance and passage of downstream migrant American eels (Anguilla rostrata) through airlift and siphon deep entrance bypass systems (2018)
Journal Article
Baker, N., Haro, A., Watten, B., Noreika, J., & Bolland, J. D. (2019). Comparison of attraction, entrance and passage of downstream migrant American eels (Anguilla rostrata) through airlift and siphon deep entrance bypass systems. Ecological engineering, 126, 74-82. https://doi.org/10.1016/j.ecoleng.2018.10.011

© 2018 Downstream migrating anguillid eels face many barriers including turbines and pumps at impoundments for water abstraction, power generation and water level control, when attempting to exit the freshwater catchment to reach spawning grounds. Mu... Read More about Comparison of attraction, entrance and passage of downstream migrant American eels (Anguilla rostrata) through airlift and siphon deep entrance bypass systems.

Direct and indirect impacts of pumping station operation on downstream migration of critically endangered European eel (2018)
Journal Article
Bolland, J. D., Murphy, L. A., Stanford, R. J., Angelopoulos, N. V., Baker, N. J., Wright, R. M., …Cowx, I. G. (2019). Direct and indirect impacts of pumping station operation on downstream migration of critically endangered European eel. Fisheries Management and Ecology, 26(1), 76-85. https://doi.org/10.1111/fme.12312

© 2018 John Wiley & Sons Ltd Downstream passage of European eel Anguilla anguilla (L.) in catchments with pump(s) for water level management is a major concern. Catchment-wide acoustic telemetry revealed silver eels quickly migrated downstream thro... Read More about Direct and indirect impacts of pumping station operation on downstream migration of critically endangered European eel.

Upstream passage of adult sea trout (Salmo trutta) at a low-head weir with an Archimedean screw hydropower turbine and co-located fish pass (2018)
Journal Article
Dodd, J. R., Bolland, J. D., Hateley, J., Cowx, I. G., Walton, S. E., Cattaneo, M. E. G. V., & Noble, R. A. A. (2018). Upstream passage of adult sea trout (Salmo trutta) at a low-head weir with an Archimedean screw hydropower turbine and co-located fish pass. Marine and Freshwater Research, 69(12), 1822-1833. https://doi.org/10.1071/MF18125

© 2018 CSIRO. The exploitation of riverine systems for renewable energy has resulted in large numbers of small-scale hydropower schemes on low-head weirs. Although considered a clean and 'green' energy source in terms of emissions, hydropower can aff... Read More about Upstream passage of adult sea trout (Salmo trutta) at a low-head weir with an Archimedean screw hydropower turbine and co-located fish pass.

Overcoming the dichotomy of implementing societal flood risk management while conserving instream fish habitat – A long-term study from a highly modified urban river (2018)
Journal Article
Angelopoulos, N. V., Harvey, J. P., Bolland, J. D., Nunn, A. D., Noble, R. A., Smith, M. A., …Cowx, I. G. (2018). Overcoming the dichotomy of implementing societal flood risk management while conserving instream fish habitat – A long-term study from a highly modified urban river. Journal of environmental management, 224, 69-76. https://doi.org/10.1016/j.jenvman.2018.07.030

Flood Risk Management (FRM) is often essential to reduce the risk of flooding to properties and infrastructure in urban landscapes, but typically degrades the habitats required by many aquatic animals for foraging, refuge and reproduction. This confl... Read More about Overcoming the dichotomy of implementing societal flood risk management while conserving instream fish habitat – A long-term study from a highly modified urban river.

Win, win, win: Low cost baffle fish pass provides improved passage efficiency, reduced passage time and broadened passage flows over a low-head weir (2018)
Journal Article
Dodd, J. R., Cowx, I. G., & Bolland, J. D. (2018). Win, win, win: Low cost baffle fish pass provides improved passage efficiency, reduced passage time and broadened passage flows over a low-head weir. Ecological engineering, 120(September 2018), 68-75. https://doi.org/10.1016/j.ecoleng.2018.05.028

The number of low-head barriers to fish migration far outweighs the number of large magnitude barriers and thus the cumulative negative impact on fish communities could also be far greater. Removal of man-made obstructions to fish migration is the mo... Read More about Win, win, win: Low cost baffle fish pass provides improved passage efficiency, reduced passage time and broadened passage flows over a low-head weir.

Efficiency of a nature-like bypass channel for restoring longitudinal connectivity for a river-resident population of brown trout (2017)
Journal Article
Dodd, J. R., Cowx, I. G., & Bolland, J. D. (2017). Efficiency of a nature-like bypass channel for restoring longitudinal connectivity for a river-resident population of brown trout. Journal of environmental management, 204(1), 318-326. https://doi.org/10.1016/j.jenvman.2017.09.004

Man-made, physical barriers have disrupted longitudinal connectivity for migratory fish in many river systems throughout the world for centuries. These barriers are considered to be a key reason for the decline of many fish species in river systems.... Read More about Efficiency of a nature-like bypass channel for restoring longitudinal connectivity for a river-resident population of brown trout.