Pacific Northwest Laboratory, Operated by the Battelle Memorial Institute, 99352, Richland, Washington, USA.
Environ Monit Assess. 1982 Dec;1(4):383-6. doi: 10.1007/BF00403838.
Excrement cast from Great Blue Heron nests was collected during the nesting period of 1978 from four colonies in Washington and Idaho. Cheesecloth strips placed on the ground beneath the nests served as excrement collecting devices. Chemical analysis for lead, mercury and cadmium were performed on dried samples. Lead was the most abundant trace metal found in heron debris. The Idaho colony at Lake Chatcolet had an average concentration of 46 ppm in the beneath-nest samples and 6 ppm in control samples. A heron colony near Tacoma, Washington had beneath-nest samples averaging 28 ppm and control samples averaging 20 ppm. Two colonies located in the interior region of Washington had substantially lower concentrations of lead. The difference observed between colonies was attributed to their associations with a polluted watershed (Chatcolet colony) an interstate highway (Tacoma colony) and an unpopulated largely agricultural area (inland Washington).
从 1978 年四个位于华盛顿州和爱达荷州的大蓝鹭巢中收集巢内粪便。放在巢下地面上的粗棉布条用作粪便收集装置。对干燥样本进行了铅、汞和镉的化学分析。在鹭类残骸中发现铅是最丰富的痕量金属。在查特科莱特湖的爱达荷州聚居地，巢下样本的平均浓度为 46ppm，对照样本为 6ppm。位于华盛顿州塔科马附近的一个鹭类聚居地，巢下样本平均浓度为 28ppm，对照样本平均浓度为 20ppm。位于华盛顿州内陆地区的两个聚居地的铅浓度要低得多。观察到的聚居地之间的差异归因于它们与受污染的流域（查特科莱特聚居地）、州际公路（塔科马聚居地）和人口稀少的主要农业区（华盛顿内陆地区）的关联。
