U.S. Geological Survey
Wetland and Aquatic Research Center
Wetland and Aquatic Research CenterWARC conducts relevant and objective research, develops new approaches and technologies, and disseminates scientific information needed to understand, manage, conserve, and restore wetlands and other aquatic and coastal ecosystems and their associated plant and animal communities throughout the nation and the world.
Publications June 11, 2025 Human perturbations to mercury in global rivers Human perturbations to mercury in global riversMercury compounds are potent neurotoxins that pose threats to human health, primarily through fish consumption. Rivers, critical for drinking water and food supply, have seen rapid increases in mercury concentrations and export to coastal margins since the Industrial Revolution (~1850). However, patterns of these changes remain understudied, limiting assessments of environmental policies...
Authors
Dong Peng, Zeli Tan, Tengfei Yuan, Peipei Wu, Zhengcheng Song, Peng Zhang, Shaojian Huang, Yanxu Zhang, Ting Lei, Beth Middleton, Jeroen E. Sonke, Guangchun Lei, Jianhua Gao
June 9, 2025 Elevated CO2 enables brackish marsh transgression into freshwater forested wetlands while stimulating CH4 emissions Elevated CO2 enables brackish marsh transgression into freshwater forested wetlands while stimulating CH4 emissionsWetlands are significant carbon (C) sinks and are expected to promote greater C assimilation as atmospheric CO2 concentrations rise. However, the fate of C with environmental change along fresh-to-oligohaline wetland transitions is not well understood. We established an ex-situ mesocosm experiment to mimic future elevated atmospheric CO2 concentrations (eCO2, 720 ppm) versus current (380...
Authors
Luzhen Chen, Donald Schoolmaster, Ken Krauss, Camille Stagg, Nicole Cormier, Rebecca Moss, Yiyi Xiong, Nathaniel B. Weston
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