Timing of avian breeding in an urbanised world
Timing of avian breeding in an urbanised world
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DOI：
10.5253/arde.v106i1.a4
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发表时间：
2018-06-01
期刊：
影响因子：
0.4
通讯作者：
Visser, Marcel E.
中科院分区：
文献类型：
--
作者：
de Jong, Maaike;van den Eertwegh, Laura;Visser, Marcel E.
世界上有很大一部分地区是城市化的，而且城市化进程正在进行中。这会导致物种栖息地的戏剧性变化，如夜间光线、声级和温度的增加，以及人类活动的直接干扰。我们使用了荷兰十种常见鸟类在巢箱中繁殖的八年公民科学数据来研究城市化与一个关键的生活史特征-繁殖时机-之间的关系。我们使用天空亮度和光发射形式的夜间光照水平作为城市化的替代指标，因为夜间环境的戏剧性变化是城市化的一个显著影响。我们预计鸟类会更早地在夜间光照较多的地区产卵，即在城市化程度较高的地区。然而，我们发现，在所研究的十个物种中，光照水平和季节时间之间没有关系。我们研究的一个局限性是，只有城市化程度最高的地区(例如城市内部)的数据有限。大多数鸟巢盒子研究区位于城市化水平有限的地区，因此夜间的光照水平相对较低。缺乏关于在城市化程度更高的环境中繁殖鸟类的数据，这是全球越来越多物种的快速扩张的栖息地，这应该是关注的焦点，公民科学非常适合也为这些地区提供数据。
A large part of the world is urbanised, and the process of urbanisation is ongoing. This causes dramatic alterations of species' habitat such as increased night light, sound levels and temperature, along with direct disturbance by human activity. We used eight years of citizen science data from ten common bird species breeding in nest boxes throughout The Netherlands to study the relationship between urbanisation and a key life history trait, timing of breeding. We used nightly light levels in the form of sky brightness and light emission as a proxy for urbanisation as the dramatic change of the night-time environment is a prominent effect of urbanisation. We expected birds to lay earlier in areas with more light at night, i.e. in more urbanised areas. We found, however, no relationship between light levels and seasonal timing in the ten species studied. A limitation of our study is that there was only limited data for the areas that were urbanised most (e.g. inside cities). Most nest box study areas are located in areas with a limited level of urbanisation, and hence with relatively low light levels of light at night. The lack of data on breeding birds in more urbanised environments, which is a rapidly expanding habitat for an increasing number of species worldwide, should be the focus of attention and citizen science would be highly suitable to also provide data for such areas.