Offshore oil rigs – a breeding refuge for Norwegian Black-legged Kittiwakes Rissa tridactyla?
In recent decades, the population of Black-legged Kittiwake Rissa tridactyla has declined substantially in most parts of the North Atlantic. Concurrently, there has been an increased urbanisation of the species, with Kittiwakes colonising nearshore buildings and other man-made structures. Here we do...
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ftninstnf:oai:brage.nina.no:11250/2686559 2023-05-15T15:39:05+02:00 Offshore oil rigs – a breeding refuge for Norwegian Black-legged Kittiwakes Rissa tridactyla? Christensen-Dalsgaard, Signe Langset, Magdalene Anker-Nilssen, Tycho North Atlantic 2020 application/pdf https://hdl.handle.net/11250/2686559 eng eng Norges forskningsråd: 192141 Seabird. 2020, 32 20-32. urn:issn:1757-5842 https://hdl.handle.net/11250/2686559 cristin:1844768 © The Authors 20-32 32 Seabird VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Peer reviewed Journal article 2020 ftninstnf 2021-12-23T07:17:18Z In recent decades, the population of Black-legged Kittiwake Rissa tridactyla has declined substantially in most parts of the North Atlantic. Concurrently, there has been an increased urbanisation of the species, with Kittiwakes colonising nearshore buildings and other man-made structures. Here we document the prevalence and performance of Kittiwakes breeding on offshore oil rigs on the Norwegian shelf and compare their reproductive output with parallel data from the nearest Kittiwake colonies monitored on the Norwegian coast. At least six (10%) of the 63 rigs addressed in the study were reported to have breeding Kittiwakes, four of which had a total of 1,164 breeding pairs in 2019. One of these offshore colonies was situated in the Barents Sea, the other five in the Norwegian Sea. Overall the Kittiwakes breeding on oil rigs had a moderate to high productivity, ranging on average between 0.61–1.07 large chicks per nest. This was higher than the productivity in most (but not all) colonies on man-made structures on the coast in the same period, and much higher than that in natural breeding habitats. The differences in Kittiwake productivity between offshore and coastal habitats are likely related to parallel differences in food availability and exposure to predators, but this warrants further study. Besides helping us explore key drivers of Kittiwake productivity, the increasing numbers of Kittiwakes breeding on man-made structures both offshore and on the coast clearly provide a significant contribution of juveniles to the impoverished Kittiwake population in Norwegian waters. publishedVersion Article in Journal/Newspaper Barents Sea Black-legged Kittiwake North Atlantic Norwegian Sea rissa tridactyla Norwegian Institute for Nature Research: Brage NINA Barents Sea Norwegian Sea |
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Open Polar |
collection |
Norwegian Institute for Nature Research: Brage NINA |
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ftninstnf |
language |
English |
topic |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
spellingShingle |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Christensen-Dalsgaard, Signe Langset, Magdalene Anker-Nilssen, Tycho Offshore oil rigs – a breeding refuge for Norwegian Black-legged Kittiwakes Rissa tridactyla? |
topic_facet |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
description |
In recent decades, the population of Black-legged Kittiwake Rissa tridactyla has declined substantially in most parts of the North Atlantic. Concurrently, there has been an increased urbanisation of the species, with Kittiwakes colonising nearshore buildings and other man-made structures. Here we document the prevalence and performance of Kittiwakes breeding on offshore oil rigs on the Norwegian shelf and compare their reproductive output with parallel data from the nearest Kittiwake colonies monitored on the Norwegian coast. At least six (10%) of the 63 rigs addressed in the study were reported to have breeding Kittiwakes, four of which had a total of 1,164 breeding pairs in 2019. One of these offshore colonies was situated in the Barents Sea, the other five in the Norwegian Sea. Overall the Kittiwakes breeding on oil rigs had a moderate to high productivity, ranging on average between 0.61–1.07 large chicks per nest. This was higher than the productivity in most (but not all) colonies on man-made structures on the coast in the same period, and much higher than that in natural breeding habitats. The differences in Kittiwake productivity between offshore and coastal habitats are likely related to parallel differences in food availability and exposure to predators, but this warrants further study. Besides helping us explore key drivers of Kittiwake productivity, the increasing numbers of Kittiwakes breeding on man-made structures both offshore and on the coast clearly provide a significant contribution of juveniles to the impoverished Kittiwake population in Norwegian waters. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Christensen-Dalsgaard, Signe Langset, Magdalene Anker-Nilssen, Tycho |
author_facet |
Christensen-Dalsgaard, Signe Langset, Magdalene Anker-Nilssen, Tycho |
author_sort |
Christensen-Dalsgaard, Signe |
title |
Offshore oil rigs – a breeding refuge for Norwegian Black-legged Kittiwakes Rissa tridactyla? |
title_short |
Offshore oil rigs – a breeding refuge for Norwegian Black-legged Kittiwakes Rissa tridactyla? |
title_full |
Offshore oil rigs – a breeding refuge for Norwegian Black-legged Kittiwakes Rissa tridactyla? |
title_fullStr |
Offshore oil rigs – a breeding refuge for Norwegian Black-legged Kittiwakes Rissa tridactyla? |
title_full_unstemmed |
Offshore oil rigs – a breeding refuge for Norwegian Black-legged Kittiwakes Rissa tridactyla? |
title_sort |
offshore oil rigs – a breeding refuge for norwegian black-legged kittiwakes rissa tridactyla? |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2686559 |
op_coverage |
North Atlantic |
geographic |
Barents Sea Norwegian Sea |
geographic_facet |
Barents Sea Norwegian Sea |
genre |
Barents Sea Black-legged Kittiwake North Atlantic Norwegian Sea rissa tridactyla |
genre_facet |
Barents Sea Black-legged Kittiwake North Atlantic Norwegian Sea rissa tridactyla |
op_source |
20-32 32 Seabird |
op_relation |
Norges forskningsråd: 192141 Seabird. 2020, 32 20-32. urn:issn:1757-5842 https://hdl.handle.net/11250/2686559 cristin:1844768 |
op_rights |
© The Authors |
_version_ |
1766370524813852672 |