Nitrogen and salt enrichments to wetland mesocosms

Freshwater wetlands of the temperate north are exposed to a range of pollutants that may alter their function, including salt intrusion associated with sea level rise, road salt contamination, and nitrogen enrichment from agricultural and urban runoff, though it is largely unknown how these drivers of change interact with different plant species to affect wetland carbon (C) fluxes and microbial communities. We implemented a full factorial mesocosm (378.5L tanks) experiment to investigate how three common wetland plants of eastern North America (Phragmites australis, Spartina pectinata, Typha latifolia) respond to four water quality treatments (fresh water, sea salt, road salt, nitrogen).

温带地区淡水湿地的功能可能受到多种污染物的干扰，这些污染物包括与海平面上升相关的盐分侵入、道路盐分污染以及来自农业和城市径流的氮肥富集。尽管这些变化的驱动因素如何与不同植物物种相互作用以影响湿地碳（C）通量和微生物群落尚不清楚，但本研究通过实施一个全因子中尺度生态系统（378.5升容器）实验，旨在探究北美东部三种常见的湿地植物（Phragmites australis、Spartina pectinata、Typha latifolia）对四种水质处理（淡水、海盐、道路盐、氮肥）的响应。