Department of Ecology and Environmental Science, Umeå University, SE-901 87 Umeå, Sweden.
Environ Pollut. 2010 May;158(5):1368-75. doi: 10.1016/j.envpol.2010.01.005. Epub 2010 Feb 8.
Mining activities affect the surrounding environment by increasing exposure to metals. In this study, metal accumulation and its effects on reproduction and health of pied flycatcher (Ficedula hypoleuca) nestlings were monitored before and up to five years after a lead mine and enrichment plant closed down. The lead concentration in moss, nestling blood, liver and feces all indicated decreased lead exposure by at least 31% after closure, although only blood lead decreased significantly. Although the birds responded fairly well to the changed atmospheric deposition (based on moss samples), concentrations were still higher compared with birds in a reference area, and breeding was affected at the mine (smaller clutches and higher mortality). Surviving nestlings suffered from lower hemoglobin levels, mean cell hemoglobin concentrations and inhibited delta-aminolevulinic acid dehydratase activity. Lead poisoning contributed to poor health and adverse reproductive effects, but other factors (e.g. increased parasitic load) probably also affected the birds.
采矿活动通过增加金属暴露来影响周围环境。在这项研究中，在一个铅矿和冶炼厂关闭前后五年内，监测了金属积累及其对 Pied Flycatcher（Ficedula hypoleuca）雏鸟繁殖和健康的影响。苔藓、雏鸟血液、肝脏和粪便中的铅浓度均表明，关闭后铅暴露至少减少了 31%，尽管只有血液中的铅显著降低。尽管这些鸟类对大气沉积的变化（基于苔藓样本）反应相当好，但与参考区域的鸟类相比，浓度仍然较高，并且在矿区的繁殖受到了影响（卵的数量较少，死亡率较高）。幸存的雏鸟血红蛋白水平较低，平均红细胞血红蛋白浓度和抑制δ-氨基-γ-酮戊酸脱水酶活性。铅中毒导致健康状况不佳和不良的繁殖影响，但其他因素（例如寄生虫负荷增加）也可能影响鸟类。
