Loading…
UNC Asheville's Spring 2013 Symposium has ended

 

 

 

 

 

Wednesday, April 24 • 3:45pm - 4:05pm
Hydraulic Controls on a Southern Appalachian Mountain Bog in Henderson Co., NC and the Effects They Have on the Endangered Sagittaria fasciculata

Sign up or log in to save this to your schedule, view media, leave feedback and see who's attending!

The U.S. Fish and Wildlife Service has proposed a new National Wildlife Refuge that would consist of up to 30 different mountain bogs located in the Southern Appalachian Mountains of North Carolina and Tennessee.  The purpose of the refuge is to protect the rare wetland ecosystems along with the rare plants and animals that inhabit them. Rutledge, one of the proposed refuge sites, is a 33-acre wetland located in Henderson County, North Carolina that has historically supported the federally endangered Bunched Arrowhead (Sagittaria fasciculate). The wetland lies at the foot of a slope down gradient from a housing development and is fed by several springs located at the base of the slope. Due to upslope development and repeated dredging, the site hydrology has been significantly altered. Concerns about the effects this would have on the Sagittaria led to an extensive project in 2011 to restore the original hydrology. This study was initiated in 2012 to assess the impact of the recent restoration, gain a better understanding of the site’s hydrology and propose future management strategies. Groundwater wells, stream gauges, and a rain gauge were installed at the site in November 2012 to monitor groundwater levels, stream flow and precipitation. The endangered Sagittaria require stable water levels, but results to date show that much of the site is periodically inundated by stormflow from the upgradient residential area. For example, stormflow following a 1.6-inch rainfall event flooded much of the site raising the water level by nearly two feet. However, water levels only rose one inch in the spring-fed portion of the site, where the Sagittaria seem to be thriving. It appears future management of stormflow will need to be addressed in order for the Sagittaria to flourish throughout the entire site.


Moderators
Speakers
Sponsors

Wednesday April 24, 2013 3:45pm - 4:05pm EDT
Zeis Hall, 014

Attendees (0)