ABSTRACT Capsule: Our findings regarding Hen Harrier Circus cyaneus territory site selection and breeding success in Ireland offer an opportunity for the development of initiatives and conservation actions aimed at enhancing the suitability of upland areas for breeding Hen Harriers and ensuring the long-term persistence of the species. Aims: To investigate landscape-scale associations between habitat composition and Hen Harrier territory site selection, and to explore the influence of habitat and climate on breeding success. Methods: We used multi-model inference from generalized linear models and Euclidean distance analyses to explore the influence of habitat, topographic, anthropogenic and climatic factors on Hen Harrier territory selection and breeding success in Ireland, based on data from national breeding surveys in 2010 and 2015. Results: Hen Harrier territories were associated with heath/shrub, bog and pre-thicket coniferous forests. Comparisons between territories and randomly generated pseudo-absences (upland and lowland) showed that breeding pairs preferentially select for these habitats. Breeding success was negatively influenced by rainfall early in the breeding season and by climatic instability, and was positively influenced by the presence of heath/shrub and bog. Conclusions: The results suggest that Hen Harrier breeding success is compromised by the synergistic effects of climate, landscape composition and management. Effective conservation of Hen Harriers in Ireland will therefore rely on landscape-scale initiatives.

中文翻译：

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影响Hen Harrier Circus cyaneus领地选址和繁殖成功的因素

摘要胶囊：我们关于母鹞马戏团蓝斑马戏团在爱尔兰选址和繁殖成功的发现为制定旨在提高高地地区繁殖母鹞的适宜性和确保长期持续存在的倡议和保护行动提供了机会物种。目的：调查栖息地组成与母鹞领地选择之间的景观尺度关联，并探讨栖息地和气候对繁殖成功的影响。方法：我们使用广义线性模型的多模型推理和欧几里德距离分析，基于 2010 年和 2010 年全国育种调查数据，探讨栖息地、地形、人为和气候因素对爱尔兰母鹞领土选择和育种成功的影响。 2015. 结果：Hen Harrier 的领地与荒地/灌木、沼泽和前茂密的针叶林有关。领土和随机生成的假缺席（高地和低地）之间的比较表明，繁殖对优先选择这些栖息地。繁殖成功受到繁殖季节早期降雨和气候不稳定的负面影响，并受到荒地/灌木和沼泽的积极影响。结论：结果表明，母鹞繁殖成功受到气候、景观组成和管理的协同效应的影响。因此，爱尔兰对母鹞的有效保护将依赖于景观规模的举措。领土和随机生成的假缺席（高地和低地）之间的比较表明，繁殖对优先选择这些栖息地。繁殖成功受到繁殖季节早期降雨和气候不稳定的负面影响，并受到荒地/灌木和沼泽的积极影响。结论：结果表明，母鹞繁殖成功受到气候、景观组成和管理的协同效应的影响。因此，爱尔兰对母鹞的有效保护将依赖于景观规模的举措。领土和随机生成的假缺席（高地和低地）之间的比较表明，繁殖对优先选择这些栖息地。繁殖成功受到繁殖季节早期降雨和气候不稳定的负面影响，并受到荒地/灌木和沼泽的积极影响。结论：结果表明，母鹞繁殖成功受到气候、景观组成和管理的协同效应的影响。因此，爱尔兰对母鹞的有效保护将依赖于景观规模的举措。并且受到荒地/灌木和沼泽的存在的积极影响。结论：结果表明，母鹞繁殖成功受到气候、景观组成和管理的协同效应的影响。因此，爱尔兰对母鹞的有效保护将依赖于景观规模的举措。并且受到荒地/灌木和沼泽的存在的积极影响。结论：结果表明，母鹞繁殖成功受到气候、景观组成和管理的协同效应的影响。因此，爱尔兰对母鹞的有效保护将依赖于景观规模的举措。