Citizen-science data identifies the daily movement patterns and habitat associations of a nocturnal urban-invading bird species (Corvus frugilegus)

IF 2.5 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Urban Ecosystems Pub Date : 2024-03-01 DOI:10.1007/s11252-024-01508-2
Jiweon Yun, Wonhyeop Shin, Jihwan Kim, James H. Thorne, Youngkeun Song
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Abstract

Rooks (Corvus frugilegus) are an invasive bird species in South Korea that are deemed harmful due to nocturnal urban invasions and agricultural damage. Employing citizen science data, we document the daily movement patterns and habitat associations of nocturnal urban-invading rooks in Suwon, South Korea. We collected 4,522 geolocated observations from December 2021 to March 2022, categorized by the timings of sunrise and sunset and segmented into 3-h intervals. Using the MaxENT (Maximum Entropy Model) and k-fold cross-validation (k = 10) with a 25% random test sample, we analyzed daily movement patterns and habitat preferences. Our results show that rooks forage in agricultural areas shortly after sunrise and roost in urban environments after sunset. Urban roosts tend to occur in areas near buildings of medium height (6–20 stories) that are illuminated by artificial light and contain utility poles. The variables with the highest percent contribution to rooks’ presence after sunset were buildings of medium height (20.7%), land use type (19.4%), elevation (29%), and utility pole (14.5%). Our findings emphasize the potential of citizen science initiatives to generate insights into the ecology of invasive bird species within large urban environments.

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公民科学数据确定了一种夜间入侵城市的鸟类(Corvus frugilegus)的日常活动模式和栖息地关系
鸦雀(Corvus frugilegus)是韩国的一种入侵鸟类,由于夜间入侵城市和破坏农业而被认为是有害的。利用公民科学数据,我们记录了韩国水原市夜间入侵城市的秧鸡的日常活动模式和栖息地关联。我们收集了 2021 年 12 月至 2022 年 3 月期间的 4522 个地理定位观测数据,这些数据按日出日落的时间进行分类,并划分为 3 小时的时间间隔。我们使用最大熵模型(MaxENT)和 k 倍交叉验证(k = 10),以 25% 的随机测试样本,分析了鸦雀的日常活动模式和栖息地偏好。结果表明,秧鸡日出后不久在农业区觅食,日落后在城市环境中栖息。城市栖息地往往位于中等高度(6-20 层)、有人工照明和电线杆的建筑物附近。对鸦雀在日落后出现的百分比贡献最大的变量是中等高度的建筑物(20.7%)、土地利用类型(19.4%)、海拔(29%)和电线杆(14.5%)。我们的发现强调了公民科学计划在深入了解大型城市环境中入侵鸟类生态方面的潜力。
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来源期刊
Urban Ecosystems
Urban Ecosystems BIODIVERSITY CONSERVATION-ECOLOGY
CiteScore
5.70
自引率
6.90%
发文量
113
期刊介绍: Urban Ecosystems is an international journal devoted to scientific investigations of urban environments and the relationships between socioeconomic and ecological structures and processes in urban environments. The scope of the journal is broad, including interactions between urban ecosystems and associated suburban and rural environments. Contributions may span a range of specific subject areas as they may apply to urban environments: biodiversity, biogeochemistry, conservation biology, wildlife and fisheries management, ecosystem ecology, ecosystem services, environmental chemistry, hydrology, landscape architecture, meteorology and climate, policy, population biology, social and human ecology, soil science, and urban planning.
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