Ten years of pulling: Ecosystem recovery after long-term weed management in Garry oak savanna

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dc.contributor.authorShackelford, Nancy
dc.contributor.authorMurray, Sean M.
dc.contributor.authorBennett, Joseph R.
dc.contributor.authorLilley, Patrick L.
dc.contributor.authorStarzomski, Brian M.
dc.contributor.authorStandish, Rachel J.
dc.date.accessioned2020-06-21T13:36:36Z
dc.date.available2020-06-21T13:36:36Z
dc.date.copyright2019en_US
dc.date.issued2019
dc.description.abstractEcosystem restoration is the practice of assisting recovery in degraded ecological communities. The aims of restoration are typically broad, involving the reinstatement of composition, structure, function, and resilience to disturbances. One common restoration tactic in degraded urban systems is to control invasive species, relying on passive restoration for further ecosystem‐level recovery. Here, we test whether this is an effective restoration strategy in Garry oak savanna, a highly threatened and ecologically important community in the North American Pacific Northwest. In urban savanna patches surrounding Victoria, British Columbia, community members have been actively removing aggressive invasive exotic species for over a decade. Based on vegetation surveys from 2007, we tested ecosystem changes in structure, composition, and resilience (i.e., functional redundancy and response diversity) across 10 years of varied management levels. We expected higher levels of invasive species management would correspond with improvements to these ecosystem metrics. However, management explained little of the patterns found over the 10‐year‐period. Woody encroachment was a complicated process of native and exotic invasion, while resilience and compositional changes were most closely tied with landscape connectivity. Thus, though invasive species management may prevent further degradation, active restoration strategies after removal are likely required for recovery of the ecosystem.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThe authors would like to acknowledge the financial support of the Hakai Institute, Mitacs, Pacific Institute for Climate Solutions, Canada Foundation for Innovation, the Natural Sciences and Engineering Research Council of Canada, and The Ian McTaggart Cowan Professorship at the University of Victoria. We would also like to acknowledge the government employees and community volunteers who are the diligent stewards of Garry oak savanna on Vancouver Island. All data are accessible through the corresponding author's data repository (https://github.com/nancyshackelford/GO-Project-2017), along with relevant code.en_US
dc.identifier.citationShackelford, N., Murray, S. M., Bennett, J. R., Lilley, P. L., Starzomski, B. M., & Standish, R. J. (2019). Ten years of pulling: Ecosystem recovery after long-term weed management in Garry oak savanna. Conservation Science and Practice, 1(10), 1-11. https://doi.org/10.1111/csp2.92.en_US
dc.identifier.urihttps://doi.org/10.1111/csp2.92
dc.identifier.urihttp://hdl.handle.net/1828/11870
dc.language.isoenen_US
dc.publisherConservation Science and Practiceen_US
dc.subjectfunctional redundancyen_US
dc.subjectresilienceen_US
dc.subjectresponse diversityen_US
dc.subjectwoody encroachmenten_US
dc.titleTen years of pulling: Ecosystem recovery after long-term weed management in Garry oak savannaen_US
dc.typeArticleen_US

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