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Biofilter Plant Ecology- Research Status

Biofilter Plant Ecology- Research Status . PIRE Meeting Jan 25, 2014 Brandon Winfrey. BS = Baccharis salicifolia ( mulefat ) SC = Schoenoplectus californicus (California bulrush) CS = Carex spissa (San Diego sedge) JA = Juncus acutus (spiny rush)

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Biofilter Plant Ecology- Research Status

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  1. Biofilter Plant Ecology- Research Status PIRE Meeting Jan 25, 2014 Brandon Winfrey

  2. BS = Baccharissalicifolia (mulefat) SC = Schoenoplectuscalifornicus (California bulrush) CS = Carexspissa (San Diego sedge) JA = Juncusacutus (spiny rush) AC = Anemopsiscalifornica (yerba mansa) TL = Typhalatifolia (broadleaf cattail) EM = Eleocharismacrostachya (common spikerush) CS JA AC TL SC BS EM

  3. Which Plants Do the Work in a StormwaterBiofilter? • Functional Diversity • Root morphology and physiology • Growth rate • C:N ratio • Preferential uptake • Drought/Water tolerance • Growth form (rhizomatous, cluster, seed dispersal, clonal, etc.) • Hypothesis: Greater treatment performance when functional diversity is higher.

  4. Carex sp. • C. spissaor C. pansa • Rhizomatous growth • Extensive roots • Medium drought tolerance • Facultative wetland species • Widely used in stormwaterbiofilters • CA native

  5. Juncuseffusus • Cluster/colony growth • Shallow, less extensive roots • High drought tolerance • Facultative wetland species • Widely used in stormwaterbiofilters • CA native

  6. Baccharissalicifolia • Dioecious shrub • Deep roots • Low/medium drought tolerance • Facultative wetland species • Widely used in stormwaterbiofilters • CA native

  7. B = Baccharissalicifolia C = Carex sp. J = Juncuseffusus Three species- 3 monocultures, 3 dicultures, 1 triculture, 1 control, replicated 3 times. B B C J C C C J J C Control J J B C B J C J B B J B B J C C C C J J J J C J Control C B J J C B J J C B B J C C C C Control J B C J B J B J C B J B B

  8. Species Diversity/Functional Diversity and Treatment Performance • About 12 studies on constructed wetlands • 2 on biofilters • Biofiltermesocosms will use specifications from Australian work. • Treatment performance during simulated storm event. • Test N and P (maybe metals) • Later, possibly pesticides, pathogens, GHGs, and metals. • Use mesocosms to test colonization by animals and animal seeding experiments

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