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If you have any questions on the information presented, or require additional report data or attachments, please contact the Report Contact
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During 2016-17, management work continued to ensure that the investment made into the
Powerhouse site over the years was protected. Management of invasive plant species and
maintenance of past works encourages native species to spread, thereby optimizing wildlife
values. Appendix A Page 17-18 of the Watershed Plan places a high value on invasive plant
management as it was felt that invasive plant species are affecting many of the high priority
habitats.
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Author: K. North
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Old Reference Number: COA-F17-W-1341
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Old Reference System: FWCP Fish Wildlife Compensation Program - Coastal
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Date Published: Mar 2017
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Report ID: 53129
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Audience: Government and Public
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During 2016-17, management work continued to ensure that the investment made into the
Powerhouse site over the years was protected. Management of invasive plant species and
maintenance of past works encourages native species to spread, thereby optimizing wildlife
values. Appendix A Page 17-18 of the Watershed Plan places a high value on invasive plant
management as it was felt that invasive plant species are affecting many of the high priority
habitats.
Invasive weed management took place over the entire 15 ha site, with a focus on the 5 ha
upland bench where the majority of invasive plant species are found. Between 12 April 2016
and 21 September 2016 a total of five weed-blitz days were completed for a total of 189 crewhours.
An additional eight days were spent irrigating and weeding the site with smaller crews for
a total of 78 crew hours. Invasive plants removed during 2016 included the usual species that
have been treated over the past several years mustards, salsify, alfalfa, cheat grass, prickly
lettuce, bulbous bluegrass, bindweed, knapweed, white clover, Dalmatian toadflax, Russian
thistle and Kochia. No observations were made of new invasive plant species encroaching into
the site. Minimal invasive weed removal was required within the riparian area or on the large
sandbar, where predominately alfalfa and white clover were removed easily from the sandy
soils.
Due to the large seed bank in the soils from the historic invasive species found on site before
restoration works began, it is imperative that weed management continue yearly with the goal of
reducing the seed bank for future years. It is noted that some of the invasive plant species on
site have seed banks that can last up to 20 years or more (Seton Corridor Report 2012).
Restoration and Revegetation works were completed during 2016-17 based on results of regular
monitoring of the site. A total area of 2,872 sm was planted out with 649 native trees, shrubs,
forbs and grasses. As well, four large boulders and cuttings were installed into a gap in the
riparian zone where an off-road vehicle was observed encroaching into the restored areas.
The Powerhouse Foreshore Restoration Project has engaged Statimc and non-Statimc
communities in multiple outreach and stewardship activities over the last nine years. This
continued in 2016-17, where one field tour and stewardship event took place at the Powerhouse
site, and environmental technicians mentored high school and post-secondary students
throughout the season on plant identification and weed management strategies.
The Powerhouse site has been incorporated into the Seton River Corridor planning process and
has been identified as high-value wildlife habitat and been designated a conservation area by
the partners and stakeholders. It has been deemed important to continue monitoring the site
and implementing adaptive management strategies identified, including continued weed
removal, increasing diversity, public education and installation of signage.
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Report Type
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Fish and Aquatic Habitat Information |
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Subject
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Region - Thompson-Nicola |
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Fish and Fish Habitat - Restoration |
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Vegetation - Riparian |
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Watershed Groups - 119 - Lillooet |
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