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Outputs (59)

Emigration of post‐spawned twaite shad Alosa fallax, an anadromous and iteroparous fish, in a highly fragmented river (2024)
Journal Article
Yeldham, M. I. A., Britton, J. R., Crundwell, C., Davies, P., Dodd, J. R., Nunn, A. D., …Bolland, J. D. (in press). 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.

The genome sequence of the stone loach, Barbatula barbatula (Linnaeus, 1758) (2023)
Journal Article
Hänfling, B., Nunn, A. D., Moccetti, P., & Darwin Tree of Life Consortium. (2023). The genome sequence of the stone loach, Barbatula barbatula (Linnaeus, 1758). Wellcome Open Research, 8, Article 518. https://doi.org/10.12688/wellcomeopenres.20293.1

We present a genome assembly from an individual female Barbatula barbatula (the stone loach; Chordata; Actinopteri; Cypriniformes; Nemacheilidae). The genome sequence is 617.6 megabases in span. Most of the assembly is scaffolded into 25 chromosomal... Read More about The genome sequence of the stone loach, Barbatula barbatula (Linnaeus, 1758).

Extinction risks and threats facing the freshwater fishes of Britain (2023)
Journal Article
Nunn, A. D., Ainsworth, R. F., Walton, S., Bean, C. W., Hatton-Ellis, T. W., Brown, A., …Noble, R. A. (in press). Extinction risks and threats facing the freshwater fishes of Britain. Aquatic conservation : marine and freshwater ecosystems, https://doi.org/10.1002/aqc.4014

Extinctions occur naturally in all environments, but rates have accelerated rapidly during the Anthropocene, especially in fresh water. Despite supporting many fish species of conservation importance, there has never been a formal assessment of their... Read More about Extinction risks and threats facing the freshwater fishes of Britain.

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.

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.

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.

An integrated decision driven design framework to support the ecological restoration of rivers (2021)
Journal Article
King, M., van Zyll de Jong, M., Piercey, D., Nunn, A. D., & Cowx, I. G. (in press). An integrated decision driven design framework to support the ecological restoration of rivers. Journal of Environmental Planning and Management, 1-24. https://doi.org/10.1080/09640568.2021.1932772

A structured and collaborative approach to design and decision‐making in the context of ecological restoration of rivers is developed and illustrated using a case study involving the mitigation of physical barriers to fish migration on the River Tren... Read More about An integrated decision driven design framework to support the ecological restoration of rivers.

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.

Causes and consequences of ontogenetic dietary shifts: a global synthesis using fish models (2018)
Journal Article
Sánchez-Hernández, J., Nunn, A. D., Adams, C. E., & Amundsen, P. (2019). Causes and consequences of ontogenetic dietary shifts: a global synthesis using fish models. Biological Reviews, 94(2), 539-554. https://doi.org/10.1111/brv.12468

Ontogenetic dietary shifts (ODSs), the changes in diet utilisation occurring over the life span of an individual consumer, are widespread in the animal kingdom. Understanding ODSs provides fundamental insights into the biological and ecological proce... Read More about Causes and consequences of ontogenetic dietary shifts: a global synthesis using fish models.

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.

New species of leafmining moths and bagworms in East Yorkshire : recent colonists or overlooked residents? (2017)
Journal Article
Nunn, A. (2017). New species of leafmining moths and bagworms in East Yorkshire : recent colonists or overlooked residents?. The Entomologist's record and journal of variation, 129(3), 156-159

The historical scarcity of many leafmining moths in East Yorkshire (vice-county [VC] 61) (see Sutton & Beaumont, 1989) is at least partly due to a lack of recorder effort, and a number of apparently local or rare species are actually relatively wides... Read More about New species of leafmining moths and bagworms in East Yorkshire : recent colonists or overlooked residents?.

Demography of sea lamprey (Petromyzon marinus) ammocoete populations in relation to potential spawning-migration obstructions (2017)
Journal Article
Nunn, A. D., Taylor, R. J., Cowx, I. G., Noble, R. A. A., Bolland, J. D., & Harvey, J. P. (2017). Demography of sea lamprey (Petromyzon marinus) ammocoete populations in relation to potential spawning-migration obstructions. Aquatic conservation : marine and freshwater ecosystems, 27(4), 764-772. https://doi.org/10.1002/aqc.2748

Copyright © 2017 John Wiley & Sons, Ltd. Recent advances in the understanding of lamprey migrations have led to concerns over the impacts of obstructions on the demography of many species. This study investigated sea lamprey (Petromyzon marinus) la... Read More about Demography of sea lamprey (Petromyzon marinus) ammocoete populations in relation to potential spawning-migration obstructions.

Do fish go with the flow? The effects of periodic and episodic flow pulses on 0+ fish biomass in a constrained lowland river (2016)
Journal Article
Walton, S. E., Nunn, A. D., Probst, W. N., Bolland, J. D., Acreman, M. C., & Cowx, I. G. (2017). Do fish go with the flow? The effects of periodic and episodic flow pulses on 0+ fish biomass in a constrained lowland river. Ecohydrology, 10(1), Article e1777. https://doi.org/10.1002/eco.1777

The hydrological regime is a significant driver of fish population dynamics in rivers, but there is a dearth of information regarding the mechanisms behind its effects on temperate species, especially non-salmonids. This study investigated the effect... Read More about Do fish go with the flow? The effects of periodic and episodic flow pulses on 0+ fish biomass in a constrained lowland river.

Environmental changes in a Mediterranean river: implications for the fish assemblage (2016)
Journal Article
Sánchez-Hernández, J., & Nunn, A. D. (2016). Environmental changes in a Mediterranean river: implications for the fish assemblage. Ecohydrology, 9(8), 1439-1451. https://doi.org/10.1002/eco.1737

This study examined the impacts of climate change on hydrology and fish population dynamics in a river in central Spain. The objectives were to: (i) contextualise long-term trends in the hydrology (1943–2012) and climate (1985–2011) of the study area... Read More about Environmental changes in a Mediterranean river: implications for the fish assemblage.

Diel variations in the assemblage structure and foraging ecology of larval and 0+ year juvenile fishes in a man-made floodplain waterbody (2016)
Journal Article
Tewson, L. H., Cowx, I. G., & Nunn, A. D. (2016). Diel variations in the assemblage structure and foraging ecology of larval and 0+ year juvenile fishes in a man-made floodplain waterbody. Journal of fish biology, 88(4), 1486-1500. https://doi.org/10.1111/jfb.12924

© 2016 The Fisheries Society of the British Isles. This study investigated diel variations in zooplankton composition and abundance, and the species composition, density, size structure, feeding activity, diet composition and prey selection of larval... Read More about Diel variations in the assemblage structure and foraging ecology of larval and 0+ year juvenile fishes in a man-made floodplain waterbody.

Managed realignment for habitat compensation: Use of a new intertidal habitat by fishes (2015)
Journal Article
Nunn, A., Clifton-Dey, D., & Cowx, I. (2016). Managed realignment for habitat compensation: Use of a new intertidal habitat by fishes. Ecological engineering, 87, 71-79. https://doi.org/10.1016/j.ecoleng.2015.11.009

Managed realignment has become an increasingly common mechanism to increase the efficiency and sustainability of flood defences, reduce defence costs or compensate for habitat losses. This study investigated the use by fishes of a new intertidal habi... Read More about Managed realignment for habitat compensation: Use of a new intertidal habitat by fishes.

The habitat use of young-of-the-year fishes during and after floods of varying timing and magnitude in a constrained lowland river (2014)
Journal Article
Bolland, J. D., Nunn, A. D., Lucas, M. C., & Cowx, I. G. (2015). The habitat use of young-of-the-year fishes during and after floods of varying timing and magnitude in a constrained lowland river. Ecological engineering, 75(February), 434-440. https://doi.org/10.1016/j.ecoleng.2014.12.009

Globally, channelisation and artificial levee construction have reduced rivers to single-thread channels isolated from their floodplains. These modifications may be particularly detrimental to fish during floods, because of increased severity of cond... Read More about The habitat use of young-of-the-year fishes during and after floods of varying timing and magnitude in a constrained lowland river.

European Non-native Species in Aquaculture Risk Analysis Scheme - a summary of assessment protocols and decision support tools for use of alien species in aquaculture (2014)
Journal Article
Copp, G. H., Russell, I. C., Peeler, E. J., Gherardi, F., Tricarico, E., Macleod, A., …Britton, J. R. (2016). European Non-native Species in Aquaculture Risk Analysis Scheme - a summary of assessment protocols and decision support tools for use of alien species in aquaculture. Fisheries Management and Ecology, 23(1), 1-11. https://doi.org/10.1111/fme.12074

The European Non-native Species in Aquaculture Risk Analysis Scheme (ENSARS) was developed in response to European 'Council Regulation No. 708/2007 of 11 June 2007 concerning use of alien and locally absent species in aquaculture' to provide protocol... Read More about European Non-native Species in Aquaculture Risk Analysis Scheme - a summary of assessment protocols and decision support tools for use of alien species in aquaculture.

Temporal and spatial variations in the abundance and population structure of the spined loach (Cobitis taenia), a scarce fish species: implications for condition assessment and conservation (2014)
Journal Article
Nunn, A. D., Tewson, L. H., Bolland, J. D., Harvey, J. P., & Cowx, I. G. (2014). Temporal and spatial variations in the abundance and population structure of the spined loach (Cobitis taenia), a scarce fish species: implications for condition assessment and conservation. Aquatic conservation : marine and freshwater ecosystems, 24(6), 818-830. https://doi.org/10.1002/aqc.2451

Effective conservation of protected species requires accurate estimates of the status of their populations. In the UK, this led to the production of a series of sampling protocols to establish the status of designated species against predetermined co... Read More about Temporal and spatial variations in the abundance and population structure of the spined loach (Cobitis taenia), a scarce fish species: implications for condition assessment and conservation.

Flow requirements of non-salmonids (2012)
Journal Article
Cowx, I. G., Noble, R. A., Nunn, A. D., Bolland, J., Walton, S., Peirson, G., & Harvey, J. P. (2012). Flow requirements of non-salmonids. Fisheries Management and Ecology, 19(6), 548-556. https://doi.org/10.1111/fme.12017

Research into the relationships between non-salmonid fish population dynamics and discharge is in its infancy compared with salmonids, thus compromising the ability to manage flows in rivers and maintain ecological status. This study reviews the pote... Read More about Flow requirements of non-salmonids.

Diel and seasonal variations in the population dynamics of Hemimysis anomala, a non-indigenous mysid: implications for surveillance and management (2012)
Journal Article
Nunn, A., & Cowx, I. G. (2012). Diel and seasonal variations in the population dynamics of Hemimysis anomala, a non-indigenous mysid: implications for surveillance and management. Aquatic Invasions, 7(3), 357-365. https://doi.org/10.3391/ai.2012.7.3.007

This study investigated diel and seasonal variations in the population dynamics of Hemimysis anomala, a non-indigenous mysid originating from the Ponto-Caspian region. There were strong diel variations in the abundance (catch-per-unit-effort; CPUE) o... Read More about Diel and seasonal variations in the population dynamics of Hemimysis anomala, a non-indigenous mysid: implications for surveillance and management.

Restoring river connectivity: Prioritizing passage improvements for diadromous fishes and lampreys (2012)
Journal Article
Cowx, I. G., & Nunn, A. D. (2012). Restoring river connectivity: Prioritizing passage improvements for diadromous fishes and lampreys. AMBIO: A Journal of the Human Environment, 41(4), 402-409. https://doi.org/10.1007/s13280-012-0281-6

Physical obstructions are becoming increasingly recognized as major factors influencing the migrations, population structures, spawning success and recruitment of freshwater organisms. This paper presents a simple but effective method, intended for u... Read More about Restoring river connectivity: Prioritizing passage improvements for diadromous fishes and lampreys.

The foraging ecology of larval and juvenile fishes (2011)
Journal Article
Nunn, A. D., Tewson, L. H., & Cowx, I. G. (2012). The foraging ecology of larval and juvenile fishes. Reviews in Fish Biology and Fisheries, 22(2), 377-408. https://doi.org/10.1007/s11160-011-9240-8

Knowledge of the foraging ecology of fishes is fundamental both to understanding the processes that function at the individual, population and community levels, and for the management and conservation of their populations and habitats. Furthermore, t... Read More about The foraging ecology of larval and juvenile fishes.

The influence of parasitism on fish population success (2010)
Journal Article
Longshaw, M., Frear, P. A., Nunn, A. D., Cowx, I. G., & Feist, S. W. (2010). The influence of parasitism on fish population success. Fisheries Management and Ecology, 17(5), 426-434. https://doi.org/10.1111/j.1365-2400.2010.00741.x

The influence of parasitism on first-year growth and recruitment success of two cyprinid species in the Yorkshire Ouse catchment, England, was investigated using a 14-year dataset. This study demonstrated a significant role of parasitism in growth an... Read More about The influence of parasitism on fish population success.

Is there evidence for a shift in fish growth and recruitment success linked to climate change? (2010)
Journal Article
Nunn, A. D., Frear, P. A., Lee, M., & Cowx, I. G. (2010). Is there evidence for a shift in fish growth and recruitment success linked to climate change?. Journal of fish biology, 77(8), 1780-1792. https://doi.org/10.1111/j.1095-8649.2010.02751.x

This study investigated whether a putative shift in climate regime in the North Atlantic in the 1990s coincided with changes in the growth and recruitment of roach Rutilus rutilus in the north-east of England. The relationships between R. rutilus gro... Read More about Is there evidence for a shift in fish growth and recruitment success linked to climate change?.

Seasonal and diel patterns in the migrations of fishes between a river and a floodplain tributary (2010)
Journal Article
Carter, M. G., Vilizzi, L., Copp, G. H., & Nunn, A. D. (2010). Seasonal and diel patterns in the migrations of fishes between a river and a floodplain tributary. Ecology of freshwater fish, 19(1), 153-162. https://doi.org/10.1111/j.1600-0633.2009.00399.x

The population behaviours associated with the migrations of fishes in lowland river ecosystems are amongst the most poorly-understood dispersal mechanisms of temperate freshwater organisms. This study evaluated the influence of four environmental var... Read More about Seasonal and diel patterns in the migrations of fishes between a river and a floodplain tributary.

Monitoring fish populations in river SACs (2009)
Book Chapter
Cowx, I. G., Harvey, J. P., Noble, R. A., & Nunn, A. D. (2010). Monitoring fish populations in river SACs. Conservation monitoring in freshwater habitats: a practical guide and case studies (53-62). Springer. https://doi.org/10.1007/978-1-4020-9278-7_6

The EU Habitats Directive (92/43/EEC) on Conservation of Natural Habitats and of Wild Fauna and Flora stipulates that Member states maintain or restore habitats and species in a condition that ensures their favourable conservation status in the commu... Read More about Monitoring fish populations in river SACs.

Monitoring sea lamprey Petromyzon marinus ammocoetes in SAC rivers: A case study on the River Wye (2009)
Book Chapter
Taylor, R. J., Noble, R. A., Nunn, A. D., Harvey, J. P., & Cowx, I. G. (2010). Monitoring sea lamprey Petromyzon marinus ammocoetes in SAC rivers: A case study on the River Wye. Conservation Monitoring in Freshwater Habitats A Practical Guide and Case Studies (193-206). Springer. https://doi.org/10.1007/978-1-4020-9278-7_19

The sea lamprey (Petromyzon marinus L.) is a designated feature of the River Wye and the Severn Estuary Special Areas of Conservation (SAC). This study assessed the conservation status of sea lamprey in the Welsh reaches of the Wye catchment. Sea lam... Read More about Monitoring sea lamprey Petromyzon marinus ammocoetes in SAC rivers: A case study on the River Wye.

Establishing survey and monitoring protocols for the assessment of conservation status of fish populations in river Special Areas of Conservation in the UK (2008)
Journal Article
Cowx, I. G., Harvey, J., Noble, R., & Nunn, A. D. (2008). Establishing survey and monitoring protocols for the assessment of conservation status of fish populations in river Special Areas of Conservation in the UK. Aquatic conservation : marine and freshwater ecosystems, 19(1), 96-103. https://doi.org/10.1002/aqc.968

1. Under the EC Habitats Directive (92/43/EEC), several rivers in the UK have been designated Special Areas of Conservation (SACs) because they support important populations of fish species. Several factors need to be considered when establishing sur... Read More about Establishing survey and monitoring protocols for the assessment of conservation status of fish populations in river Special Areas of Conservation in the UK.

The diets and parasites of larval and 0+ juvenile twaite shad in the lower reaches and estuaries of the rivers Wye, Usk and Towy, UK (2008)
Journal Article
Nunn, A. D., Noble, R. A. A., Harvey, J. P., & Cowx, I. G. (2008). The diets and parasites of larval and 0+ juvenile twaite shad in the lower reaches and estuaries of the rivers Wye, Usk and Towy, UK. Hydrobiologia, 614(1), 209-218. https://doi.org/10.1007/s10750-008-9507-9

This study assessed the diets and parasites of larval and 0+ juvenile twaite shad Alosa fallax fallax in the lower reaches and estuaries of the rivers Wye, Usk and Towy, UK. There were significant differences between the diets of larvae and co-habiti... Read More about The diets and parasites of larval and 0+ juvenile twaite shad in the lower reaches and estuaries of the rivers Wye, Usk and Towy, UK.

Winter diet and condition of two 0+ year cyprinid fish species in the lower River Trent, England (2008)
Journal Article
Nunn, A. D., Harvey, J. P., & Cowx, I. G. (2008). Winter diet and condition of two 0+ year cyprinid fish species in the lower River Trent, England. Journal of fish biology, 72(6), 1529-1533. https://doi.org/10.1111/j.1095-8649.2008.01799.x

The winter diets of 0+ year juvenile dace Leuciscus leuciscus and roach Rutilus rutilus in the lower River Trent, England, were dominated by aufwuchs. There were no significant changes in the relative condition of either fish species over the winter.... Read More about Winter diet and condition of two 0+ year cyprinid fish species in the lower River Trent, England.

Establishment of self-sustaining populations of non-native fish species in the River Trent and Warwickshire Avon, UK, indicated by the presence of 0+ fish (2007)
Journal Article
Nunn, A. D., Bolland, J. D., Harvey, J. P., & Cowx, I. G. (2007). Establishment of self-sustaining populations of non-native fish species in the River Trent and Warwickshire Avon, UK, indicated by the presence of 0+ fish. Aquatic Invasions, 2(3), 190-196. https://doi.org/10.3391/ai.2007.2.3.6

This study investigated the reproduction of non-native fish species, inferred from the presence of 0+ fish, in three English lowland rivers over an 8 year period. Evidence of self-sustaining populations was found for three non-native fish species, na... Read More about Establishment of self-sustaining populations of non-native fish species in the River Trent and Warwickshire Avon, UK, indicated by the presence of 0+ fish.

Condition assessment of lamprey populations in the Yorkshire Ouse catchment, north-east England, and the potential influence of physical migration barriers (2007)
Journal Article
Nunn, A. D., Harvey, J. P., Noble, R. A. A., & Cowx, I. G. (2008). Condition assessment of lamprey populations in the Yorkshire Ouse catchment, north-east England, and the potential influence of physical migration barriers. Aquatic conservation : marine and freshwater ecosystems, 18(2), 175-189. https://doi.org/10.1002/aqc.863

1. River lamprey (Lampetra fluviatilis) and sea lamprey (Petromyzon marinus) are designated features of the River Derwent Special Area of Conservation (SAC) and the Humber Estuary (a possible SAC). This study determined the condition of lamprey popul... Read More about Condition assessment of lamprey populations in the Yorkshire Ouse catchment, north-east England, and the potential influence of physical migration barriers.

Fish, climate and the Gulf Stream: the influence of abiotic factors on the recruitment success of cyprinid fishes in lowland rivers (2007)
Journal Article
Nunn, A. D., Harvey, J. P., Britton, J. R., Frear, P. A., & Cowx, I. G. (2007). Fish, climate and the Gulf Stream: the influence of abiotic factors on the recruitment success of cyprinid fishes in lowland rivers. Freshwater biology, 52(8), 1576-1586. https://doi.org/10.1111/j.1365-2427.2007.01789.x

1. Climatic effects are increasingly being recognised as an important factor causing inter-annual variability in organism abundances in aquatic and terrestrial ecosystems. This study investigated the relationships between water temperature (cumulativ... Read More about Fish, climate and the Gulf Stream: the influence of abiotic factors on the recruitment success of cyprinid fishes in lowland rivers.

Variations in the spawning periodicity of eight fish species in three English lowland rivers over a 6 year period, inferred from 0+year fish length distributions (2007)
Journal Article
Nunn, A. D., Harvey, J. P., & Cowx, I. G. (2007). Variations in the spawning periodicity of eight fish species in three English lowland rivers over a 6 year period, inferred from 0+year fish length distributions. Journal of fish biology, 70(4), 1254-1267. https://doi.org/10.1111/j.1095-8649.2007.01415.x

The spawning periodicity of eight fish species was investigated in three English lowland rivers over a 6 year period from patterns in 0+ year fish standard length (L-S) distributions. A single cohort of 0+ year dace Leuciscus leuciscus, roach Rutilus... Read More about Variations in the spawning periodicity of eight fish species in three English lowland rivers over a 6 year period, inferred from 0+year fish length distributions.

Benefits to 0+fishes of connecting man-made waterbodies to the lower River Trent, England (2007)
Journal Article
Nunn, A. D., Harvey, J. P., & Cowx, I. G. (2007). Benefits to 0+fishes of connecting man-made waterbodies to the lower River Trent, England. River Research and Applications, 23(4), 361-376. https://doi.org/10.1002/rra.993

Floodplain waterbodies are reputed to enhance recruitment of riverine fish populations via provision of spawning and nursery habitat, refuge from floods, and increased availability of planktonic food resources compared with main river channels. Notwi... Read More about Benefits to 0+fishes of connecting man-made waterbodies to the lower River Trent, England.

The food and feeding relationships of larval and 0+year juvenile fishes in lowland rivers and connected waterbodies. II. Prey selection and the influence of gape (2007)
Journal Article
Nunn, A. D., Harvey, J. P., & Cowx, I. G. (2007). The food and feeding relationships of larval and 0+year juvenile fishes in lowland rivers and connected waterbodies. II. Prey selection and the influence of gape. Journal of fish biology, 70(3), 743-757. https://doi.org/10.1111/j.1095-8649.2007.01335.x

The relative importance of taxa- and size-specific prey selection, and the influence of gape on the prey consumed by the larvae and 0+ year juveniles of four fish species were investigated in 'main river', 'marina' and 'pond' macrohabitats in the low... Read More about The food and feeding relationships of larval and 0+year juvenile fishes in lowland rivers and connected waterbodies. II. Prey selection and the influence of gape.

The food and feeding relationships of larval and 0+year juvenile fishes in lowland rivers and connected waterbodies. I. Ontogenetic shifts and interspecific diet similarity (2007)
Journal Article
Nunn, A. D., Harvey, J. P., & Cowx, I. G. (2007). The food and feeding relationships of larval and 0+year juvenile fishes in lowland rivers and connected waterbodies. I. Ontogenetic shifts and interspecific diet similarity. Journal of fish biology, 70(3), 726-742. https://doi.org/10.1111/j.1095-8649.2007.01334.x

Many fish species are zooplanktivorous at the onset of exogenous feeding, but distinct shifts in their foraging biology may occur with development. This study investigated the food and feeding relationships of the larvae and 0+ year juveniles of 13 f... Read More about The food and feeding relationships of larval and 0+year juvenile fishes in lowland rivers and connected waterbodies. I. Ontogenetic shifts and interspecific diet similarity.

Is water temperature an adequate predictor of recruitment success in cyprinid fish populations in lowland rivers? (2003)
Journal Article
Nunn, A., Cowx, I., Frear, P., & Harvey, J. (2003). Is water temperature an adequate predictor of recruitment success in cyprinid fish populations in lowland rivers?. Freshwater biology, 48(4), 579-588. https://doi.org/10.1046/j.1365-2427.2003.01033.x

1. Higher than average ambient water temperature in the first year of life may be responsible for strong cohorts of adult cyprinid fish. Whilst temperature explains much of the variation in year-class strength (YCS), however, it is not the only influ... Read More about Is water temperature an adequate predictor of recruitment success in cyprinid fish populations in lowland rivers?.

Recruitment patterns of six species of cyprinid fishes in the lower River Trent, England (2002)
Journal Article
Nunn, A. D., Cowx, I. G., & Harvey, J. P. (2002). Recruitment patterns of six species of cyprinid fishes in the lower River Trent, England. Ecology of freshwater fish, 11(2), 74-84. https://doi.org/10.1034/j.1600-0633.2002.t01-1-00001.x

Fisheries data were collected for six species of 0-group cyprinid fishes from eight sites in the lower reaches of the River Trent, England, between May and October 1999 inclusive, using a micromesh seine net. Recruitment and growth patterns were obse... Read More about Recruitment patterns of six species of cyprinid fishes in the lower River Trent, England.

Quantitative sampling of 0-group fish populations in large lowland rivers: Point abundance sampling by electric fishing versus micromesh seine netting (2001)
Journal Article
Cowx, I. G., Nunn, A. D., & Harvey, J. P. (2001). Quantitative sampling of 0-group fish populations in large lowland rivers: Point abundance sampling by electric fishing versus micromesh seine netting. Archiv fur Hydrobiologie, 151(3), 369-382. https://doi.org/10.1127/archiv-hydrobiol/151/2001/369

This paper compares the density and population structure of 0-group fishes obtained from simultaneous quantitative point abundance sampling using electric fishing with a special electrode design, comprising a 10-cm diameter, spherical anode inside a... Read More about Quantitative sampling of 0-group fish populations in large lowland rivers: Point abundance sampling by electric fishing versus micromesh seine netting.