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新烟碱造成鸟类种群数量降低

摘要 : 荷兰Radboud大学的研究人员发现,新烟碱杀虫剂严重污染地区的鸟类急剧减少,表明这些杀虫剂比以前认为的更具有破坏环境的能力。相关文章发表于2014年7月9日的《Nature》杂志上。

最近几十年新烟碱杀虫剂的使用被发现与蜜蜂和其他无脊椎动物传粉者数量下降有关。

Caspar Hallmann等人发表了来自荷兰的数据,它显示在以昆虫为食的农场鸟类种群数量的下降与“吡虫啉”(一种新烟碱)在水中的浓度之间存在一个关联。即使将其他土地利用变化也考虑进去,这一空间关联仍然存在。

作者提出,新烟碱也许对生态系统有一个级联效应,该效应在未来关于杀虫剂使用问题的立法中应当考虑进去。

原文摘要:

Declines in insectivorous birds are associated with high neonicotinoid concentrations

Caspar A. Hallmann, Ruud P. B. Foppen, Chris A. M. van Turnhout, Hans de Kroon & Eelke Jongejans

Recent studies have shown that neonicotinoid insecticides have adverse effects on non-target invertebrate species. Invertebrates constitute a substantial part of the diet of many bird species during the breeding season and are indispensable for raising offspring. We investigated the hypothesis that the most widely used neonicotinoid insecticide, imidacloprid, has a negative impact on insectivorous bird populations. Here we show that, in the Netherlands, local population trends were significantly more negative in areas with higher surface-water concentrations of imidacloprid. At imidacloprid concentrations of more than 20 nanograms per litre, bird populations tended to decline by 3.5 per cent on average annually. Additional analyses revealed that this spatial pattern of decline appeared only after the introduction of imidacloprid to the Netherlands, in the mid-1990s. We further show that the recent negative relationship remains after correcting for spatial differences in land-use changes that are known to affect bird populations in farmland. Our results suggest that the impact of neonicotinoids on the natural environment is even more substantial than has recently been reported and is reminiscent of the effects of persistent insecticides in the past. Future legislation should take into account the potential cascading effects of neonicotinoids on ecosystems.

对应Nature杂志: 2014年7月17日Nature杂志精选

来源: Nature中文 浏览次数:61

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