Dr Jamie Dodd's Outputs (20)

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. (online). Spatial ecology and population dynamics of brown trout Salmo trutta L. in reservoirs and headwater tributaries. Journal of fish biology, 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.

Genetic consequences of improved river connectivity in brown trout (Salmo trutta L.) (2024)
Journal Article
Moccetti, P., Dodd, J. R., Joyce, D. A., Nunn, A. D., Gillespie, B., & Bolland, J. D. (2024). Genetic consequences of improved river connectivity in brown trout (Salmo trutta L.). Evolutionary Applications, 17(4), Article e13660. https://doi.org/10.1111/eva.13660

Fragmentation of watercourses poses a significant threat to biodiversity, particularly for migratory fish species. Mitigation measures such as fishways, have been increasingly implemented to restore river connectivity and support fish migration. The... Read More about Genetic consequences of improved river connectivity in brown trout (Salmo trutta L.).

Tracking repeat spawning anadromous fish migrations over multiple years in a fragmented river suggests philopatry and sex-linked variation in space use (2024)
Journal Article
Davies, P., Britton, J. R., Andreou, D., Crundwell, C., Dodd, J. R., Lepais, O., Nunn, A. D., Sabatino, S., Velterop, R., & Bolland, J. D. (2024). Tracking repeat spawning anadromous fish migrations over multiple years in a fragmented river suggests philopatry and sex-linked variation in space use. Aquatic sciences, 86(2), https://doi.org/10.1007/s00027-024-01048-z

There is limited knowledge of how philopatry influences the spatial ecology of iteroparous anadromous species during their spawning migrations, but this knowledge is important in understanding population responses to interventions such as river recon... Read More about Tracking repeat spawning anadromous fish migrations over multiple years in a fragmented river suggests philopatry and sex-linked variation in space use.

Emigration of post-spawned twaite shad Alosa fallax, an anadromous and iteroparous fish, in a highly fragmented river (2024)
Journal Article
Yeldham, M. I., Britton, J. R., Crundwell, C., Davies, P., Dodd, J. R., Nunn, A. D., …Bolland, J. D. (2024). Emigration of post-spawned twaite shad Alosa fallax, an anadromous and iteroparous fish, in a highly fragmented river. Journal of fish biology, https://doi.org/10.1111/jfb.15713

Anthropogenic barriers are widely known to negatively impact the spawning migrations of anadromous fishes, by delaying or preventing passage upstream. Although the impacts of barriers on emigrating post-spawned adults are less well studied, they coul... Read More about Emigration of post-spawned twaite shad Alosa fallax, an anadromous and iteroparous fish, in a highly fragmented river.

Factors influencing European river lamprey passage at a tidal river barrier (2024)
Journal Article
Lothian, A. J., Bolland, J. D., Albright, A. J., Jubb, W. M., Bubb, D. H., Noble, R. A., Nunn, A. D., Dodd, J. R., Tummers, J. S., & Lucas, M. C. (2024). Factors influencing European river lamprey passage at a tidal river barrier. Hydrobiologia, https://doi.org/10.1007/s10750-024-05633-z

Understanding and improving passage by diadromous species at tidal barriers is less well advanced than that for non-tidal anthropogenic river barriers. This study assessed factors affecting upstream passage of anadromous river lamprey (Lampetra fluvi... Read More about Factors influencing European river lamprey passage at a tidal river barrier.

Can't pass or won't pass: the importance of motivation when quantifying improved connectivity for riverine brown trout Salmo trutta (2023)
Journal Article
Dodd, J. R., Cowx, I. G., Joyce, D. A., & Bolland, J. D. (in press). Can't pass or won't pass: the importance of motivation when quantifying improved connectivity for riverine brown trout Salmo trutta. Journal of fish biology, https://doi.org/10.1111/jfb.15628

Reversing the negative impacts that anthropogenic habitat fragmentation has on animal movement is a key goal in the management of landscapes and conservation of species globally. Accurate assessment of measures to remediate habitat fragmentation, suc... Read More about Can't pass or won't pass: the importance of motivation when quantifying improved connectivity for riverine brown trout Salmo trutta.

Catchment-wide interactive effects of anthropogenic structures and river levels on fish spawning migrations (2023)
Journal Article
Jubb, W. M., Noble, R. A., Dodd, J. R., Nunn, A. D., Schirrmacher, P., Lothian, A. J., …Bolland, J. D. (2023). Catchment-wide interactive effects of anthropogenic structures and river levels on fish spawning migrations. Anthropocene, 43, Article 100400. https://doi.org/10.1016/j.ancene.2023.100400

Worldwide, rivers are extensively fragmented by anthropogenic structures, reducing longitudinal connectivity, inhibiting migration and leading to severe declines in many fish populations, especially for diadromous species. However, few studies have d... Read More about Catchment-wide interactive effects of anthropogenic structures and river levels on fish spawning migrations.

Seascape genomics reveals limited dispersal and suggests spatially varying selection among European populations of sea lamprey (Petromyzon marinus) (2023)
Journal Article
Baltazar-Soares, M., Britton, J. R., Pinder, A., Harrison, A. J., Nunn, A. D., Quintella, B. R., …Andreou, D. (2023). Seascape genomics reveals limited dispersal and suggests spatially varying selection among European populations of sea lamprey (Petromyzon marinus). Evolutionary Applications, 16(6), 1169-1183. https://doi.org/10.1111/eva.13561

Sea lamprey Petromyzon marinus is an anadromous and semelparous fish without homing behaviors. Despite being a freshwater, free-living organism for a large part of their life cycle, its adulthood is spent as a parasite of marine vertebrates. In their... Read More about Seascape genomics reveals limited dispersal and suggests spatially varying selection among European populations of sea lamprey (Petromyzon marinus).

Acoustic telemetry informs conditional capture probability of an anadromous fish (2023)
Journal Article
Jubb, W. M., Noble, R. A., Dodd, J. R., Nunn, A. D., Lothian, A. J., Albright, A. J., …Bolland, J. D. (2023). Acoustic telemetry informs conditional capture probability of an anadromous fish. Fisheries research, 264, Article 106737. https://doi.org/10.1016/j.fishres.2023.106737

Information on movement ecology and susceptibility to fishing gears is becoming increasingly employed in the management of commercial fisheries. This study combined acoustic telemetry (n = 51 and 52) and a simple passive integrated transponder (PIT)... Read More about Acoustic telemetry informs conditional capture probability of an anadromous fish.

Using acoustic tracking of an anadromous lamprey in a heavily fragmented river to assess current and historic passage opportunities and prioritise remediation (2023)
Journal Article
Jubb, W. M., Noble, R. A., Dodd, J. R., Nunn, A. D., & Bolland, J. D. (in press). Using acoustic tracking of an anadromous lamprey in a heavily fragmented river to assess current and historic passage opportunities and prioritise remediation. River Research and Applications, https://doi.org/10.1002/rra.4140

Anthropogenic structures extensively fragment riverine systems, reducing longitudinal connectivity, inhibiting migration and leading to severe declines in many fish populations, especially for diadromous species. This study investigated the upstream... Read More about Using acoustic tracking of an anadromous lamprey in a heavily fragmented river to assess current and historic passage opportunities and prioritise remediation.

Tracking anadromous fish over successive freshwater migrations reveals the influence of tagging effect, previous success, and abiotic factors on upstream passage over barriers (2023)
Journal Article
Davies, P., Robert Britton, J., Castro-Santos, T., Crundwell, C., Dodd, J. R., Nunn, A. D., …Bolland, J. D. (2023). Tracking anadromous fish over successive freshwater migrations reveals the influence of tagging effect, previous success, and abiotic factors on upstream passage over barriers. Canadian journal of fisheries and aquatic sciences, 80(7), 1110-1125. https://doi.org/10.1139/cjfas-2022-0196

Predicting and mitigating the impact of anthropogenic barriers on migratory fish requires an understanding of the individual and environmental factors that influence barrier passage. Here, the upstream spawning migrations of iteroparous twaite shad A... Read More about Tracking anadromous fish over successive freshwater migrations reveals the influence of tagging effect, previous success, and abiotic factors on upstream passage over barriers.

Understanding the impact of barriers to onward migration; a novel approach using translocated fish (2023)
Journal Article
Jubb, W. M., Noble, R. A., Dodd, J. R., Nunn, A. D., Lothian, A. J., Albright, A. J., …Bolland, J. D. (2023). Understanding the impact of barriers to onward migration; a novel approach using translocated fish. Journal of environmental management, 335, Article 117488. https://doi.org/10.1016/j.jenvman.2023.117488

River catchments worldwide are heavily fragmented by anthropogenic barriers, reducing their longitudinal connectivity and contributing to the decline of migratory fish populations. Direct impacts of individual barriers on migratory fish are well-esta... Read More about Understanding the impact of barriers to onward migration; a novel approach using translocated fish.

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.

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. (2022). Individual movement variation in upstream-migrating sea lamprey Petromyzon marinus in a highly fragmented river. Freshwater biology, 67(4), 643-656. 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.

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., Ó’Maoiléidigh, N., O’Neill, R., Sheehan, E., Stamp, T., & 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.

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., Britton, J. R., & 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.

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.

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.