Geolocator-tracking seabird migration and moult reveal large-scale, temperature-driven isoscapes in the NE Atlantic.
Geolocator-tracking seabird migration and moult reveal large-scale, temperature-driven isoscapes in the NE Atlantic.
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地理定位器跟踪海鸟迁徙和换羽揭示了大西洋东北部大规模的、由温度驱动的等景观。
DOI：
10.1002/rcm.9489
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Atkins K
中科院分区：
文献类型：
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作者：
Atkins K
通过将精确的卫星跟踪与血液采样相结合，海鸟可用于验证海洋碳和氮的等值线，但目前还不清楚使用低精度光级地理定位器（GLS）和羽毛采样的可比方法是否同样有效。（桑属）和冬季生长的羽毛样本（通过非繁殖鸟类的图像分析证实）在东北大西洋测试δ 13 C和δ 15 N的空间梯度。结果通过将冬季生长的羽毛与跟踪的鸟类的非繁殖位置相匹配，我们发现纬度梯度，浅海沃茨的δ 13 C和δ 15 N。此外，海洋表面温度最好地解释了同位素模式。在当地ports.ConclusionsOur研究中发现了类似的同位素梯度在鱼肌肉采样揭示了利用海鸟GLS和羽毛重建大规模同位素模式的潜力。
RationaleBy combining precision satellite‐tracking with blood sampling, seabirds can be used to validate marine carbon and nitrogen isoscapes, but it is unclear whether a comparable approach using low‐precision light‐level geolocators (GLS) and feather sampling can be similarly effective.MethodsHere we used GLS to identify wintering areas of northern gannets (Morus bassanus) and sampled winter grown feathers (confirmed from image analysis of non‐breeding birds) to test for spatial gradients in δ13C and δ15N in the NE Atlantic.ResultsBy matching winter‐grown feathers with the non‐breeding location of tracked birds we found latitudinal gradients in δ13C and δ15N in neritic waters. Moreover, isotopic patterns were best explained by sea surface temperature. Similar isotope gradients were found in fish muscle sampled at local ports.ConclusionsOur study reveals the potential of using seabird GLS and feathers to reconstruct large‐scale isotopic patterns.