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All Outputs (49)

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., Cowx, I. G., Nunn, A. D., Occhipinti-Ambrogi, A., Savini, D., Mumford, J., & 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.

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.