Altered hydrology is the greatest anticipated impact on non-forested wetlands due to climate change. The likelihood of more extreme precipitation events increases the risk of erosion and sedimentation as well as nutrient runoff, which can fuel the transportation and growth of non-native invasive plants and weedy native species. The impact of these events is likely to be greatest lower in the watershed, where floodwaters collect for a longer period of time. In addition, winter temperature and precipitation are likely to become more variable, which may affect groundwater-fed communities in unpredictable ways: rapid snowmelt and rain on frozen ground could increase runoff and decrease groundwater recharge, while rain on unfrozen ground could infiltrate and increase groundwater levels.