Notice of permit
Regional or Local Number: SARA-PYR-2017-0381
Notice is hereby given that pursuant to the provisions of section 73 of the Species at Risk Act permit no. SARA-PYR-2017-0381 is issued.
Affecting the species is incidental to the carrying out of the activity
This permit authorizes to incidentally kill and harm individuals of Oregon Forestsnail (Allogona townsendiana) during removal of invasive woody plant species within an ~50-hectare area adjacent to a wetland at OPSEE DND training area in the Lower Fraser Valley, British Columbia. As part of ASU Chilliwack's Integrated Pest Management Program, this project aims to improve the ecological integrity and sustainability of a wetland system on a piece of land managed by DND in the Chilliwack River Valley, by removing targeted invasive plant species. Most invasive plants will be removed by hand pulling. Mature shrubs (woody stems) may be cut near the ground.
Start Date: 2017-06-10 End Date: 2019-06-30
Issuing Authority: Environment Canada
- Species at Risk Act
Location of Activity (province, territory or ocean):
- British Columbia
a) All reasonable alternatives to the activities that would reduce the impact on the species have been considered and the best solutions have been adopted. The proposed method, selective hand removal of the invasive species during the sensitive early flowering period, is an effective way to manage the invasive species with little potential to impact Oregon Forestsnail. Consideration was given to the options of not doing the proposed invasive species removal at all. An assessment of the habitat and the invasive species suggests that the wetland and adjacent habitat would be improved by the removal of the invasive species and further degraded if no weed management was undertaken. Invasives are a recognized threat to Oregon Forestsnail, so this work will ultimately improve the condition of the habitat for the species. Further, the area is outside of the area containing Oregon Forestsnail critical habitat, and few individuals have been located in the vicinity, so very few (if any) individuals are expected to be encountered. Consideration was given to the options of doing the activity during the snail aestivation or hibernation windows when Oregon Forestsnails are less likely to be present on the vegetation. The best time to manage the targeted invasive species is just as it is coming into flower and about to produce seeds as they are most vulnerable when they are actively putting energy into growth and producing seed. Also, once they produce seed they can produce thousands of seedlings. Consequently, it is not reasonable to time the work to coincide with the snail aestivation or hibernation windows. Similarly, chemical removal options are not reasonable alternatives because herbicides/pesticides are listed as a threat to Oregon Forestsnail. b) All feasible measures will be taken to minimize the impact of activities on the species. The area will be surveyed for Oregon Forestsnail prior to commencement of the work. The cut invasive plants will be left on site (unless they have produced seed) to ensure any snails that may have been overlooked are not removed from the site. If Oregon Forestsnails are encountered during pre-work surveys, only the flowering stalks of the plants they are found on will be cut, and the rest of the plant will be left in place so as not to disturb or move the snails. The uncut portion will be removed later in the year, when the snails are no longer present. Trampling and soil compaction will be avoided by moving crew and equipment along established trails. The permit holders have ample experience to effectively oversee this work and will be on site to supervise. c) The activities will not jeopardize the survival or recovery of the species. Only a small number of individuals may be harmed/killed and no destruction of residences or critical habitat should result from these activities. Invasives are identified as a threat to Oregon Forestsnail, so this work should ultimately improve the condition of the habitat for the species.
Canadian Wildlife Service
Delta, British Columbia
Phone: (604) 940-4650
Fax: (604) 946-7022
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