Data from: How do resource distribution and taxonomy affect the use of dual foraging in seabirds?: A review

In many seabird species, parents feeding young switch between short and long foraging excursions in a strategy known as “dual foraging”. To investigate whether habitat quality near breeding colonies drives the use of dual foraging, we conducted a systematic review of the seabird literature, compiling the results of 103 studies which identified dual-foraging in 50 species across nine families from all six seabird orders. We estimated the mean distance from the colony of each species' short and long foraging trips and obtained remote-sensed data on chlorophyll concentrations within the radius of both short and long trips around each colony. We then assessed, for each seabird family, the relationship between the use of dual foraging strategies and the difference in the quality of foraging locations between short- and long-distance foraging trips. We found that the probability of dual foraging grew with increasing difference in the quality of foraging locations available during short- and long-distance trips. We also found that when controlling for differences in habitat quality, albatrosses and penguins were less likely to use dual foraging than Procellariidae, which in turn were less likely to use dual foraging than Sulids. This study helps clarify how environmental conditions and taxon-specific characteristics influence seabird foraging behaviour. Keywords: seabirds, dual foraging, habitat quality, central-place foraging, interspecific differences.在众多海鸟物种中，育幼亲代会在短期与长期觅食往返之间切换，这种策略被称为“双模式觅食（dual foraging）”。为探究繁殖群落周边的栖息地质量是否会驱动双模式觅食策略的采用，本研究对海鸟相关文献开展了系统性综述，整合了103项研究的结果——这些研究在隶属于6个海鸟目、9个科的50个物种中均发现了双模式觅食现象。我们估算了各物种短期与长期觅食往返距离繁殖群落的平均距离，并获取了每个群落周边短期、长距离觅食半径范围内的叶绿素浓度遥感数据。随后，我们针对每个海鸟科，分析了双模式觅食策略的采用情况与短、长距离觅食地点的质量差异之间的关联。研究结果显示，双模式觅食的发生概率会随着短、长距离觅食地点的可用质量差异扩大而升高。此外，在控制栖息地质量差异的变量后，信天翁与企鹅采用双模式觅食的概率低于鹱科（Procellariidae），而鹱科的采用概率又低于鲣鸟科（Sulidae）。本研究有助于阐明环境条件与类群特异性特征如何影响海鸟的觅食行为。关键词：海鸟、双模式觅食、栖息地质量、中心地觅食（central-place foraging）、种间差异（interspecific differences）