4. Final Project Title (ER 390)
Ecological Factors Contributing to the Growth of Reed Canarygrass at Swan Lake/Christmas Hill Nature Sanctuary, Saanich British Columbia
5. Brief Description of Final Project
The subject of this final project is Phalaris arundinacea, Reed canary grass,(Rcg) which belongs to the Poaceae family. Rcg comes in three varieties: native, non native and a hybrid. The native species, already rare in wetland ecosystems of North America prior to European settlement, was burned by Native Americans throughout the Pacific Northwest’s Puget Sound area. This practice was done to promote growth of emergent herbaceous habitat (Antieau, 1999).
The non native specie (of Eurasian-origin) has become an aggressive invader of aquatic ecosystems, although at the time of its introduction through European settlement, was regarded as a fast-growing crop for livestock. As well, in more recent times, Rcg has been seen as beneficial in early restoration projects and for bank stabilization and nutrient uptake around constructed wetlands.
The implications of non native Rcg on Swan Lake includes restoration recommendations. Field studies have been conducted for one year. In-depth research in the form of archival, geological, hydrological, land surveys and personal interviews took place with individuals who have a vested interest in the subject. The findings suggest the following restoration strategies:
1) Do nothing. Allow “nature” to take its course, 2) Do something: burn, cover, replant with native species, flood the area, harvest the offending grass, starve it, mulch it, mow it, graze it, disk it, apply herbicide, and, lastly, 3) a combination of 1 and 2.