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Impacts of piscivorous birds on salmonid populations and game fisheries in Scotland: a review

Research output: Contribution to journalArticle

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Impacts of piscivorous birds on salmonid populations and game fisheries in Scotland: a review. / Harris, Catriona M; Calladine, J.; Wernham, C.W.; Park, K.J.

In: Wildlife Biology, Vol. 14, No. 4, 12.2008, p. 395-411.

Research output: Contribution to journalArticle

Harvard

Harris, CM, Calladine, J, Wernham, CW & Park, KJ 2008, 'Impacts of piscivorous birds on salmonid populations and game fisheries in Scotland: a review' Wildlife Biology, vol. 14, no. 4, pp. 395-411.

APA

Harris, C. M., Calladine, J., Wernham, C. W., & Park, K. J. (2008). Impacts of piscivorous birds on salmonid populations and game fisheries in Scotland: a review. Wildlife Biology, 14(4), 395-411.

Vancouver

Harris CM, Calladine J, Wernham CW, Park KJ. Impacts of piscivorous birds on salmonid populations and game fisheries in Scotland: a review. Wildlife Biology. 2008 Dec;14(4):395-411.

Author

Harris, Catriona M ; Calladine, J. ; Wernham, C.W. ; Park, K.J. / Impacts of piscivorous birds on salmonid populations and game fisheries in Scotland: a review. In: Wildlife Biology. 2008 ; Vol. 14, No. 4. pp. 395-411.

Bibtex - Download

@article{7205d1091a0b4de2b170c5ae4b436921,
title = "Impacts of piscivorous birds on salmonid populations and game fisheries in Scotland: a review",
abstract = "The Scottish populations of salmonids are important both ecologically and economically. Game fisheries for Atlantic salmon Salmo salar, sea trout Salmo trutta trutta and brown trout Salmo trutta fari are all highly acclaimed and generate substantial levels of income for Scotland, but many populations are in decline and efforts are being made to ensure the future sustainability of these species. These declines have led to a focus On the impact of piscivorous bird predation on fish populations. The purpose of our review was to assess the evidence for population-level impacts on salmonid populations, and/or economic impacts on Scottish game fisheries of predation by the four primary UK freshwater piscivorous bird species: cormorant Phalacrocorax carbo, goosander Mergus merganser, red-breasted merganser Mergus serrator and grey heron Ardea cinerea. There is evidence that these birds can, in some situations, remove large numbers of fish from stocked and natural fisheries. However, a lack of information on fish population levels, the numbers and species composition of feeding birds, and robust calculations of fish consumption has hampered the conversion of the results of the existing studies into useful quantitative measures of impact. As a consequence, few studies have demonstrated any reductions in numbers of breeding fish or fish productivity due to predation by piscivorous birds, or direct economic loss to fisheries in Scotland. We support a previous recommendation for a reiterative procedure of modelling, experimentation and remodelling to assess the impacts of piscivorous birds on fisheries. Wide-scale Studies of the movements of piscivorous birds, their feeding locations in relation to river characteristics, and the factors that make fish particularly vulnerable to predation are seen as important areas for future research.",
keywords = "cormorant, economic losses, goosander, heron, predation, red-breasted merganser, salmon, trout, CORMORANTS PHALACROCORAX-CARBO, JUVENILE ATLANTIC SALMON, RED-BREASTED MERGANSERS, COLUMBIA RIVER, SALAR L., GREAT CORMORANTS, SCOTTISH RIVERS, OCEAN CLIMATE, TOP PREDATORS, SMOLT RUN",
author = "Harris, {Catriona M} and J. Calladine and C.W. Wernham and K.J. Park",
year = "2008",
month = "12",
language = "English",
volume = "14",
pages = "395--411",
journal = "Wildlife Biology",
issn = "0909-6396",
publisher = "Nordic Council for Wildlife Research",
number = "4",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Impacts of piscivorous birds on salmonid populations and game fisheries in Scotland: a review

AU - Harris, Catriona M

AU - Calladine, J.

AU - Wernham, C.W.

AU - Park, K.J.

PY - 2008/12

Y1 - 2008/12

N2 - The Scottish populations of salmonids are important both ecologically and economically. Game fisheries for Atlantic salmon Salmo salar, sea trout Salmo trutta trutta and brown trout Salmo trutta fari are all highly acclaimed and generate substantial levels of income for Scotland, but many populations are in decline and efforts are being made to ensure the future sustainability of these species. These declines have led to a focus On the impact of piscivorous bird predation on fish populations. The purpose of our review was to assess the evidence for population-level impacts on salmonid populations, and/or economic impacts on Scottish game fisheries of predation by the four primary UK freshwater piscivorous bird species: cormorant Phalacrocorax carbo, goosander Mergus merganser, red-breasted merganser Mergus serrator and grey heron Ardea cinerea. There is evidence that these birds can, in some situations, remove large numbers of fish from stocked and natural fisheries. However, a lack of information on fish population levels, the numbers and species composition of feeding birds, and robust calculations of fish consumption has hampered the conversion of the results of the existing studies into useful quantitative measures of impact. As a consequence, few studies have demonstrated any reductions in numbers of breeding fish or fish productivity due to predation by piscivorous birds, or direct economic loss to fisheries in Scotland. We support a previous recommendation for a reiterative procedure of modelling, experimentation and remodelling to assess the impacts of piscivorous birds on fisheries. Wide-scale Studies of the movements of piscivorous birds, their feeding locations in relation to river characteristics, and the factors that make fish particularly vulnerable to predation are seen as important areas for future research.

AB - The Scottish populations of salmonids are important both ecologically and economically. Game fisheries for Atlantic salmon Salmo salar, sea trout Salmo trutta trutta and brown trout Salmo trutta fari are all highly acclaimed and generate substantial levels of income for Scotland, but many populations are in decline and efforts are being made to ensure the future sustainability of these species. These declines have led to a focus On the impact of piscivorous bird predation on fish populations. The purpose of our review was to assess the evidence for population-level impacts on salmonid populations, and/or economic impacts on Scottish game fisheries of predation by the four primary UK freshwater piscivorous bird species: cormorant Phalacrocorax carbo, goosander Mergus merganser, red-breasted merganser Mergus serrator and grey heron Ardea cinerea. There is evidence that these birds can, in some situations, remove large numbers of fish from stocked and natural fisheries. However, a lack of information on fish population levels, the numbers and species composition of feeding birds, and robust calculations of fish consumption has hampered the conversion of the results of the existing studies into useful quantitative measures of impact. As a consequence, few studies have demonstrated any reductions in numbers of breeding fish or fish productivity due to predation by piscivorous birds, or direct economic loss to fisheries in Scotland. We support a previous recommendation for a reiterative procedure of modelling, experimentation and remodelling to assess the impacts of piscivorous birds on fisheries. Wide-scale Studies of the movements of piscivorous birds, their feeding locations in relation to river characteristics, and the factors that make fish particularly vulnerable to predation are seen as important areas for future research.

KW - cormorant

KW - economic losses

KW - goosander

KW - heron

KW - predation

KW - red-breasted merganser

KW - salmon

KW - trout

KW - CORMORANTS PHALACROCORAX-CARBO

KW - JUVENILE ATLANTIC SALMON

KW - RED-BREASTED MERGANSERS

KW - COLUMBIA RIVER

KW - SALAR L.

KW - GREAT CORMORANTS

KW - SCOTTISH RIVERS

KW - OCEAN CLIMATE

KW - TOP PREDATORS

KW - SMOLT RUN

UR - http://www.scopus.com/inward/record.url?scp=59449083448&partnerID=8YFLogxK

M3 - Article

VL - 14

SP - 395

EP - 411

JO - Wildlife Biology

T2 - Wildlife Biology

JF - Wildlife Biology

SN - 0909-6396

IS - 4

ER -

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ID: 416593