气候变化领域集成服务门户(CCPortal): Time of year and weather influence departure decisions of sandhill cranes at a primary stopover

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DOI	10.3389/fevo.2024.1279279
	Time of year and weather influence departure decisions of sandhill cranes at a primary stopover
	Vanausdall, Rachel A.; Kendall, William L.; Collins, Daniel P.; Hays, Quentin R.
发表日期	2024
ISSN	2296-701X
起始页码	12
卷号	12
英文摘要	The Rocky Mountain Population (RMP) of greater sandhill cranes uses a key stopover area, the San Luis Valley (SLV) in Colorado. Parameters of migration phenology can differ between autumn and spring and are affected by weather and environmental factors. We hypothesized that sandhill cranes in the SLV would have a longer stopover duration in autumn than in spring, and that wind assistance, crosswinds, temperature change, barometric air pressure, and surface water area would influence persistence probability. We used data from sandhill cranes fitted with transmitters that spanned autumn and spring, 2015-2022. We used an open robust design mark-recapture model to estimate stopover duration, arrival probability, and persistence probability. We examined the effects of weather and surface water on the persistence probability for 106 sandhill cranes in the SLV. Stopover duration was longer in autumn than in spring and had higher variability across years. Arrival probability to the SLV peaked on 13 October in autumn and 21 February in spring. Persistence probability declined around mid-December in autumn and mid-March in spring. We found that several weather covariates influenced persistence in both seasons. In autumn, sandhill cranes departed the SLV with higher tailwinds, lower crosswinds, and higher surface water availability. In spring, sandhill cranes departed the SLV with lower crosswinds and higher barometric air pressure at the surface and higher wind speeds at altitudes of about 3,000 m. The effect of wind speed was stronger later in the spring. Given the lower variability of arrival and persistence probability and shorter stopover duration in spring compared to autumn, we suspect that RMP sandhill cranes are using a time-minimization strategy during spring. However, given the use of supportive winds and weather conditions ideal for soaring, RMP sandhill cranes appear to be using strategies that save energy in both seasons. Our study identifies the optimal timing of water management and surveys for RMP sandhill cranes and confirms that weather influences their persistence. Understanding differences in migration patterns between seasons and the factors that influence persistence at stopover sites will also be important for anticipating phenological impacts from climate change and land use alterations.
英文关键词	climate; migration; phenology; San Luis Valley; water
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:001192123400001
来源期刊	FRONTIERS IN ECOLOGY AND EVOLUTION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/291472
作者单位	Colorado State University; United States Department of the Interior; United States Geological Survey; Colorado State University; United States Department of the Interior; US Fish & Wildlife Service
推荐引用方式 GB/T 7714	Vanausdall, Rachel A.,Kendall, William L.,Collins, Daniel P.,et al. Time of year and weather influence departure decisions of sandhill cranes at a primary stopover[J],2024,12.
APA	Vanausdall, Rachel A.,Kendall, William L.,Collins, Daniel P.,&Hays, Quentin R..(2024).Time of year and weather influence departure decisions of sandhill cranes at a primary stopover.FRONTIERS IN ECOLOGY AND EVOLUTION,12.
MLA	Vanausdall, Rachel A.,et al."Time of year and weather influence departure decisions of sandhill cranes at a primary stopover".FRONTIERS IN ECOLOGY AND EVOLUTION 12(2024).