2013 Strawberry Creek Filling the Weed Shaped Hole Poster

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Post on 08-Mar-2016




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A 2012 TGIF Funded Project


<ul><li><p>Filling the weed-shaped hole: Determining an </p><p>effective planting palette for Strawberry Creek Lauren Hallett, Nathan Bickart, Lawrence Fernandez and Katharine Suding </p><p>Department of Environmental Science, Policy &amp; Management, UC Berkeley </p><p>Every year over 500 undergraduates care for Strawberry Creek by pulling the invasive ivy that </p><p>blankets its banks. Without planting new species, this may create a weed-shaped hole that ivy </p><p>can refill. Our goal was to select and plant species that limit ivy re-invasion. </p><p>What we did: Species with similar traits to ivy such as similar growth rates and shade tolerance should </p><p>be more competitive. We measured the traits of 40 species to identify plants that can compete with ivy. </p><p>Roots Shoots Specific leaf area: Thick leaves </p><p>last longer and are more drought </p><p>tolerant </p><p>Chlorophyll: Higher leaf </p><p>chlorophyll content increases </p><p>photosynthesis rates and growth </p><p>Conductance: Low conductance </p><p>means less water is lost during </p><p>respiration </p><p>Height: Greater height is </p><p>associated with faster growth </p><p>Specific root length </p><p>&amp; Proportion of fine </p><p>roots : Thin roots </p><p>have more surface </p><p>area but are more </p><p>fragile </p><p>Rooting depth: Deep </p><p>tap roots increase </p><p>drought avoidance </p><p> Root:shoot ratio: Higher root to shoot ratios </p><p>decrease susceptibility to drought </p><p>Species that clustered near ivy in multivariate </p><p>trait-space are functionally similar to ivy. We grew these functionally-</p><p>similar species in the </p><p>Strawberry Creek nursery. </p><p>And then planted them along Strawberry Creek. </p><p>800 plants With the help of 250 volunteers </p><p>We will keep an eye on these plants over the next year to assess how successfully they compete with ivy. </p><p>Thanks to: Jesse Fried and Martin Alexander for long hours measuring traits, Tim Pine and the Strawberry </p><p>Creek Restoration Program for guidance and planting support and Katherine Walsh for logistical help. </p><p>Ivy </p><p>Ivy </p></li></ul>


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