Identifying spatial drivers of long-term population growth in three large gull species: the importance of mink farms and urban areas

IF 1.4 4区环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Avian Conservation and Ecology Pub Date : 2022-01-01 DOI:10.5751/ace-02233-170210

Josu Meléndez-Arteaga, T. Bregnballe, M. Frederiksen

{"title":"Identifying spatial drivers of long-term population growth in three large gull species: the importance of mink farms and urban areas","authors":"Josu Meléndez-Arteaga, T. Bregnballe, M. Frederiksen","doi":"10.5751/ace-02233-170210","DOIUrl":null,"url":null,"abstract":"Population growth generally shows extensive spatial variation within species, but the proximate and ultimate drivers of this variation are often poorly understood. For highly mobile colonial breeders, population growth is expected to be linked to resource availability within a considerable radius of the colony. We analyzed the relationship between population growth over the period 2000– 2020 and resource availability for three large gull species in several hundred colonies in Denmark. Colony growth rates showed strong spatial autocorrelation for Herring Gull Larus argentatus, whereas no such relationship was apparent for the other two species (Great Black-backed Gull L. marinus and Lesser Black-backed Gull L. fuscus). Colony growth rates of Herring Gulls were correlated with relevant proxies of food availability within species-specific foraging ranges, including the extent of urban and subtidal foraging habitats, and the number of mink farms. No such correlations were found for the other two species. The positive relationships of Herring Gull colony growth with the number of mink farms and the extent of built-up area were particularly interesting, as they highlighted the strong dependency of this species on human-associated food sources. Furthermore, Denmark closed all mink farms in late 2020 because of concerns about the spread of SARS-CoV-2 virus between farms and between minks and humans, culling approximately 17 million minks. This dramatic change in food availability is expected to have a negative impact on the Danish Herring Gull population, which in recent years has fared better than in the neighboring countries. © 2022 by the author(s).","PeriodicalId":49233,"journal":{"name":"Avian Conservation and Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.4000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Avian Conservation and Ecology","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.5751/ace-02233-170210","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIODIVERSITY CONSERVATION","Score":null,"Total":0}

引用次数: 2

Abstract

Population growth generally shows extensive spatial variation within species, but the proximate and ultimate drivers of this variation are often poorly understood. For highly mobile colonial breeders, population growth is expected to be linked to resource availability within a considerable radius of the colony. We analyzed the relationship between population growth over the period 2000– 2020 and resource availability for three large gull species in several hundred colonies in Denmark. Colony growth rates showed strong spatial autocorrelation for Herring Gull Larus argentatus, whereas no such relationship was apparent for the other two species (Great Black-backed Gull L. marinus and Lesser Black-backed Gull L. fuscus). Colony growth rates of Herring Gulls were correlated with relevant proxies of food availability within species-specific foraging ranges, including the extent of urban and subtidal foraging habitats, and the number of mink farms. No such correlations were found for the other two species. The positive relationships of Herring Gull colony growth with the number of mink farms and the extent of built-up area were particularly interesting, as they highlighted the strong dependency of this species on human-associated food sources. Furthermore, Denmark closed all mink farms in late 2020 because of concerns about the spread of SARS-CoV-2 virus between farms and between minks and humans, culling approximately 17 million minks. This dramatic change in food availability is expected to have a negative impact on the Danish Herring Gull population, which in recent years has fared better than in the neighboring countries. © 2022 by the author(s).

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

确定三种大型海鸥物种长期人口增长的空间驱动因素:水貂养殖场和城市地区的重要性

种群增长通常在物种内部表现出广泛的空间变化，但这种变化的近因和最终驱动因素往往知之甚少。对于高度流动的群体繁殖者，预计人口增长与群体相当大半径内的资源可用性有关。我们分析了2000 - 2020年期间丹麦数百个种群中三种大型海鸥的种群增长与资源可用性之间的关系。大黑背鸥(L. marinus)和小黑背鸥(L. fuscus)种群生长速率的空间自相关性不明显，而大黑背鸥(Larus argentatus)种群生长速率的空间自相关性不明显。在城市和潮下觅食栖息地的范围以及水貂养殖场的数量等特定觅食范围内，银鸥的种群生长率与食物可用性相关。在其他两个物种中没有发现这种相关性。鲱鱼鸥种群的增长与水貂养殖场的数量和建筑面积的程度之间的正相关关系特别有趣，因为它们突出了这种物种对人类相关食物来源的强烈依赖。此外，由于担心SARS-CoV-2病毒在农场之间以及水貂与人之间传播，丹麦于2020年底关闭了所有水貂养殖场，扑杀了大约1700万只水貂。食物供应的这种巨大变化预计会对丹麦鲱鱼鸥的数量产生负面影响，近年来，丹麦鲱鱼鸥的情况比邻国要好。©2022由作者所有。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Avian Conservation and Ecology BIODIVERSITY CONSERVATION-ORNITHOLOGY

CiteScore

2.20

自引率

7.10%

发文量

审稿时长

>12 weeks

期刊介绍： Avian Conservation and Ecology is an open-access, fully electronic scientific journal, sponsored by the Society of Canadian Ornithologists and Birds Canada. We publish papers that are scientifically rigorous and relevant to the bird conservation community in a cost-effective electronic approach that makes them freely available to scientists and the public in real-time. ACE is a fully indexed ISSN journal that welcomes contributions from scientists all over the world. While the name of the journal implies a publication niche of conservation AND ecology, we think the theme of conservation THROUGH ecology provides a better sense of our purpose. As such, we are particularly interested in contributions that use a scientifically sound and rigorous approach to the achievement of avian conservation as revealed through insights into ecological principles and processes. Papers are expected to fall along a continuum of pure conservation and management at one end to more pure ecology at the other but our emphasis will be on those contributions with direct relevance to conservation objectives.