Southern Sedge Meadow is moderately-high to highly vulnerable to climate change. Most species appear to be more sensitive to climate-influenced changes in hydrology and water chemistry than warming.

Submitted by dshannon on Tue, 02/02/2021 - 08:30

Changes in surface water hydrology are likely, with a projected increase in both droughts as well as the frequency and intensity of floods, along with associated sedimentation and nutrient enrichment. Changes to groundwater regimes are possible as well, although both an increase in groundwater recharge as well as decreases in ground water levels are possible. For both surface and groundwater-driven sites, increased nutrient enrichment is likely and could fuel an expansion of invasive species. High species diversity provides the ability for some species to expand if others decline, although the loss of a just a handful of dominant species could result in a significant change to the system. However, most species appear to be more sensitive to hydrology and water chemistry than temperature. In addition, sedge meadows are often embedded within a mosaic of other wetland communities, potentially allowing them to shift within a given site as conditions change.