The impact of researcher disturbance on nest predation rates: a meta-analysis: Impact of researchers on nest predation
The impact of researcher disturbance on nest predation rates: a meta-analysis: Impact of researchers on nest predation
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DOI：
10.1111/j.1474-919x.2011.01186.x
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发表时间：
2012
期刊：
影响因子：
2.1
通讯作者：
J. D. Ibáñez-Álamo;O. Sanllorente;M. Soler
中科院分区：
文献类型：
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作者：
J. D. Ibáñez-Álamo;O. Sanllorente;M. Soler
由于研究人员长期以来一直担心他们自己的活动可能对结果估计产生负面影响，因此对鸟类筑巢成功量化感兴趣的研究人员访问鸟巢的影响受到了相当大的关注。一种广泛的观点认为，研究者的干扰通过增加所研究巢穴的捕食率对繁殖成功有总体的负面影响。然而，到目前为止，还没有人对这种关系的经验证据进行统计评估。我们对已发表的结果进行了荟萃分析，以评估研究人员的活动是否会增加鸟类的巢捕食。我们还评估了这种影响的可变性与研究物种的特征和使用的方法有关。这些分析使用了18项实验研究的数据，涉及6个鸟类目的25个物种。我们的研究结果表明，与传统观点相反，研究人员的活动通常不会影响巢捕食的发生率。此外，这种关系在鸟类目中似乎不一致，令人惊讶的是，雀形目鸟类的巢存活率随着研究人员的活动而增加。我们还发现，研究人员的活动对沿海地区的物种繁殖和地面筑巢的物种的巢存活有显著的积极影响。对于这些等级和行会之间的差异，可能的解释是由于不同的巢穴捕食者群体。这种关于研究者影响的新观点可能对鸟类管理和保护以及生态学和进化等其他研究领域具有重要意义，在这些领域中，实地测量的巢存活率被广泛用于测试和支持一系列假设。
The effects of visits to nests by researchers interested in quantifying avian nesting success have received considerable attention, as researchers have long been concerned about the possible negative effects of their own activities on the resulting estimates. There is a widely held view that investigator disturbance has an overall negative effect on breeding success by increasing nest predation rates in the nests studied. However, to date no one has statistically assessed the empirical evidence for such a relationship. We undertook a meta-analysis of published results to assess whether researcher activities increase nest predation in birds. We also assessed the variability in this effect in relation to the traits of the study species and the methodology used. These analyses used data from 18 experimental studies involving 25 species from six avian orders. Our results suggest that, contrary to the traditional view, researcher activities do not generally affect the incidence of nest predation. Moreover, this relationship appears inconsistent among avian orders and, surprisingly, nest survival of passerines increased weakly with researcher activities. We also found significant positive effects of researcher activity on nest survival for species breeding on coastal areas and for species nesting on the ground. The possible explanation for these differences among orders and guilds could be due to different nest predator communities. This new perspective on the effect of investigators could have important implications for bird management and conservation, as well as for other fields of study such as ecology and evolution, in which nest survival rates measured in the field are widely used to test and support a range of hypotheses.