Data from: Combined bottom-up and top-down pressures drive catastrophic population declines of Arctic skuas in Scotland
1. Understanding drivers of population change is critical for effective species conservation. In the northeast Atlantic Ocean, recent changes amongst seabird communities are linked to human and climate change impacts on foodwebs. Many species have declined severely, with food shortages and increased...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:117015 2023-07-02T03:30:58+02:00 Data from: Combined bottom-up and top-down pressures drive catastrophic population declines of Arctic skuas in Scotland Perkins, Allan Ratcliffe, Norman Suddaby, Dave Ribbands, Brian Smith, Claire Ellis, Pete Meek, Eric Bolton, Mark 2018-10-17T14:37:47.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-io-5x19 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:117015 unknown doi:10.5061/dryad.v056r5h/1 doi:10.5061/dryad.v056r5h/2 doi:10.5061/dryad.v056r5h/3 doi:10.5061/dryad.v056r5h/4 doi:10.5061/dryad.v056r5h/5 doi:10.5061/dryad.v056r5h/6 doi:10.5061/dryad.v056r5h/7 doi:10.5061/dryad.v056r5h/8 doi:10.5061/dryad.v056r5h/9 doi:10.5061/dryad.v056r5h/10 doi:10.5061/dryad.v056r5h/11 doi:10.5061/dryad.v056r5h/12 doi:10.5061/dryad.v056r5h/13 doi:10.1111/1365-2656.12890 http://nbn-resolving.org/urn:nbn:nl:ui:13-io-5x19 doi:10.5061/dryad.v056r5h https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:117015 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2018 ftdans https://doi.org/10.5061/dryad.v056r5h/110.5061/dryad.v056r5h/210.5061/dryad.v056r5h/310.5061/dryad.v056r5h/410.5061/dryad.v056r5h/510.5061/dryad.v056r5h/610.5061/dryad.v056r5h/710.5061/dryad.v056r5h/810.5061/dryad.v056r5h/910.5061/dryad.v056r5h/1010.5061/ 2023-06-13T13:33:48Z 1. Understanding drivers of population change is critical for effective species conservation. In the northeast Atlantic Ocean, recent changes amongst seabird communities are linked to human and climate change impacts on foodwebs. Many species have declined severely, with food shortages and increased predation reducing productivity. Arctic skua Stercorarius parasiticus, a kleptoparasite of other seabirds, is one such species. 2. The aim of the study was to determine relative effects of bottom-up and top-down pressures on Arctic skuas across multiple colonies in a rapidly declining national population. 3. Long-term monitoring data were used to quantify changes in population size and productivity of Arctic skuas, their hosts (black-legged kittiwake Rissa tridactyla, common guillemot Uria aalge, Atlantic puffin Fratercula arctica, Arctic tern Sterna paradisaea), and an apex predator (great skua Stercorarius skua) over 24 years (1992–2015) in Scotland. We used digital mapping and statistical models to determine relative effects of bottom-up (host productivity) and top-down (great skua density) pressures on Arctic skuas across 33 colonies, and assess variation between three colony types classified by host abundance. 4. Arctic skuas declined by 81% and their hosts by 42–92%, whereas at most colonies great skuas increased. Annual productivity declined in Arctic skuas and their hosts, and reduced Arctic skua breeding success was a driver of the species’ population decline. Arctic skua productivity was positively associated with annual breeding success of hosts, and negatively with great skua density. Inter-colony variation suggested Arctic skua trends and productivity were most sensitive to top-down pressures at smaller colonies of host species where great skuas had increased most, whereas bottom-up pressures dominated at large colonies of host species. 5. Scotland’s Arctic skua population is declining rapidly, with bottom-up and top-down pressures simultaneously reducing breeding success to unsustainably low levels. ... Other/Unknown Material Arctic Arctic skua Arctic tern Atlantic puffin Black-legged Kittiwake Climate change common guillemot fratercula Fratercula arctica Great skua Northeast Atlantic rissa tridactyla Stercorarius parasiticus Stercorarius skua Sterna paradisaea Uria aalge uria Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Arctic Arctic and North 48 164 188 |
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Open Polar |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Perkins, Allan Ratcliffe, Norman Suddaby, Dave Ribbands, Brian Smith, Claire Ellis, Pete Meek, Eric Bolton, Mark Data from: Combined bottom-up and top-down pressures drive catastrophic population declines of Arctic skuas in Scotland |
topic_facet |
Life sciences medicine and health care |
description |
1. Understanding drivers of population change is critical for effective species conservation. In the northeast Atlantic Ocean, recent changes amongst seabird communities are linked to human and climate change impacts on foodwebs. Many species have declined severely, with food shortages and increased predation reducing productivity. Arctic skua Stercorarius parasiticus, a kleptoparasite of other seabirds, is one such species. 2. The aim of the study was to determine relative effects of bottom-up and top-down pressures on Arctic skuas across multiple colonies in a rapidly declining national population. 3. Long-term monitoring data were used to quantify changes in population size and productivity of Arctic skuas, their hosts (black-legged kittiwake Rissa tridactyla, common guillemot Uria aalge, Atlantic puffin Fratercula arctica, Arctic tern Sterna paradisaea), and an apex predator (great skua Stercorarius skua) over 24 years (1992–2015) in Scotland. We used digital mapping and statistical models to determine relative effects of bottom-up (host productivity) and top-down (great skua density) pressures on Arctic skuas across 33 colonies, and assess variation between three colony types classified by host abundance. 4. Arctic skuas declined by 81% and their hosts by 42–92%, whereas at most colonies great skuas increased. Annual productivity declined in Arctic skuas and their hosts, and reduced Arctic skua breeding success was a driver of the species’ population decline. Arctic skua productivity was positively associated with annual breeding success of hosts, and negatively with great skua density. Inter-colony variation suggested Arctic skua trends and productivity were most sensitive to top-down pressures at smaller colonies of host species where great skuas had increased most, whereas bottom-up pressures dominated at large colonies of host species. 5. Scotland’s Arctic skua population is declining rapidly, with bottom-up and top-down pressures simultaneously reducing breeding success to unsustainably low levels. ... |
author |
Perkins, Allan Ratcliffe, Norman Suddaby, Dave Ribbands, Brian Smith, Claire Ellis, Pete Meek, Eric Bolton, Mark |
author_facet |
Perkins, Allan Ratcliffe, Norman Suddaby, Dave Ribbands, Brian Smith, Claire Ellis, Pete Meek, Eric Bolton, Mark |
author_sort |
Perkins, Allan |
title |
Data from: Combined bottom-up and top-down pressures drive catastrophic population declines of Arctic skuas in Scotland |
title_short |
Data from: Combined bottom-up and top-down pressures drive catastrophic population declines of Arctic skuas in Scotland |
title_full |
Data from: Combined bottom-up and top-down pressures drive catastrophic population declines of Arctic skuas in Scotland |
title_fullStr |
Data from: Combined bottom-up and top-down pressures drive catastrophic population declines of Arctic skuas in Scotland |
title_full_unstemmed |
Data from: Combined bottom-up and top-down pressures drive catastrophic population declines of Arctic skuas in Scotland |
title_sort |
data from: combined bottom-up and top-down pressures drive catastrophic population declines of arctic skuas in scotland |
publishDate |
2018 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-io-5x19 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:117015 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic skua Arctic tern Atlantic puffin Black-legged Kittiwake Climate change common guillemot fratercula Fratercula arctica Great skua Northeast Atlantic rissa tridactyla Stercorarius parasiticus Stercorarius skua Sterna paradisaea Uria aalge uria |
genre_facet |
Arctic Arctic skua Arctic tern Atlantic puffin Black-legged Kittiwake Climate change common guillemot fratercula Fratercula arctica Great skua Northeast Atlantic rissa tridactyla Stercorarius parasiticus Stercorarius skua Sterna paradisaea Uria aalge uria |
op_relation |
doi:10.5061/dryad.v056r5h/1 doi:10.5061/dryad.v056r5h/2 doi:10.5061/dryad.v056r5h/3 doi:10.5061/dryad.v056r5h/4 doi:10.5061/dryad.v056r5h/5 doi:10.5061/dryad.v056r5h/6 doi:10.5061/dryad.v056r5h/7 doi:10.5061/dryad.v056r5h/8 doi:10.5061/dryad.v056r5h/9 doi:10.5061/dryad.v056r5h/10 doi:10.5061/dryad.v056r5h/11 doi:10.5061/dryad.v056r5h/12 doi:10.5061/dryad.v056r5h/13 doi:10.1111/1365-2656.12890 http://nbn-resolving.org/urn:nbn:nl:ui:13-io-5x19 doi:10.5061/dryad.v056r5h https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:117015 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.v056r5h/110.5061/dryad.v056r5h/210.5061/dryad.v056r5h/310.5061/dryad.v056r5h/410.5061/dryad.v056r5h/510.5061/dryad.v056r5h/610.5061/dryad.v056r5h/710.5061/dryad.v056r5h/810.5061/dryad.v056r5h/910.5061/dryad.v056r5h/1010.5061/ |
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