Daam Michiel A, Van den Brink Paul J, Nogueira António J A
CESAM and Department of Biology, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
Ecotoxicol Environ Saf. 2009 Feb;72(2):424-33. doi: 10.1016/j.ecoenv.2008.07.008. Epub 2008 Aug 21.
This paper compares the fate and effects of linuron in an outdoor plankton-dominated microcosm study carried out in Thailand with those reported in temperate model ecosystem studies evaluating linuron and other photosynthesis-inhibiting herbicides. Lower linuron concentrations disappeared slightly faster from the water compartment compared to temperate conditions, which appears to be related with the experimental design rather than differences in climatic conditions. Sensitivity of primary producers and zooplankton were similar for the climatic regions, whereas effects on ecosystem functioning were less pronounced in tropical microcosms. Recovery potential of affected endpoints appears higher for tropical ecosystems compared to their temperate counterparts. These findings support the use of toxicity data generated in temperate countries in the tropics. Recommendations for the methodology of tropical model ecosystem experiments are discussed.
本文将泰国进行的一项以浮游生物为主的室外微观世界研究中利谷隆的归宿和影响，与温带模型生态系统研究中评估利谷隆和其他光合作用抑制性除草剂的结果进行了比较。与温带条件相比，较低浓度的利谷隆在水相中的消失速度略快，这似乎与实验设计有关，而非气候条件差异。气候区域内初级生产者和浮游动物的敏感性相似，而热带微观世界中对生态系统功能的影响则不那么明显。与温带生态系统相比，热带生态系统中受影响终点的恢复潜力似乎更高。这些发现支持在热带地区使用温带国家生成的毒性数据。文中还讨论了热带模型生态系统实验方法的建议。
