Wind-shelters as safe sites for establishment of Lupinus arboreus, a coastal species Public Deposited

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  • To learn the effect of wind on a species native to a windy site, I compared germination, seedling survival, seedling form, and the force required to uproot seedlings in a wind-exposed and a wind-sheltered site. In February 1992, the sand dune perennial Lupinus arboreus Sims. was planted in wind-exposed and wind-sheltered plots at Bodega Head, California. Half the individuals were planted from seed and the other half were transplanted from nearby. By late July 1992, 26/43 of the germinants or transplants were still alive in the wind-protected plot but only 3/42 in the wind-exposed plot. This suggests the importance of wind-sheltered sites as safe sites for establishment of this dune species. By 57 days after planting the average plant was smaller in the wind-exposed than the wind-swept plot (P < 0.05). These data suggest that rapid early growth was important to survival. The wind-exposed survivors at day 151 (n=4) tended to have morphologies more resistant to wind: they averaged twice the stem diameter (2 cm above the ground) and half the height of wind-protected plants (n=28). There were no significant differences in the force required to uproot plants by treatment (P < 0.05). Two non-native lupines were also planted from seed to learn how congeners respond to wind. Germination, establishment, and growth of L. cosentinii Guss. plants were unaffected by wind, perhaps because the large seed permits rapid development of a taproot to aid in water acquisition. Seedlings of L. angustifolius L. cv. Ganja died quickly after total defoliation by caterpillars, suggestive of a major role of chemical defenses for survival of lupines at this sand dune site.
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  • Barbara L. Gartner. 1995. Wind-shelters as safe sites for establishment of Lupinus arboreus, a coastal species. Madrono, 42(1):1-11.
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  • description.provenance : Submitted by Alexa Pinckard (pinckara@onid.orst.edu) on 2010-02-20T01:14:11Z No. of bitstreams: 1 95-Gartner-LupineMadrono.pdf: 718854 bytes, checksum: 144c53027fa9a40b9d58c2806064452e (MD5)
  • description.provenance : Approved for entry into archive by Caryn Davis(caryn.davis@oregonstate.edu) on 2010-02-20T01:18:52Z (GMT) No. of bitstreams: 1 95-Gartner-LupineMadrono.pdf: 718854 bytes, checksum: 144c53027fa9a40b9d58c2806064452e (MD5)
  • description.provenance : Made available in DSpace on 2010-02-20T01:18:52Z (GMT). No. of bitstreams: 1 95-Gartner-LupineMadrono.pdf: 718854 bytes, checksum: 144c53027fa9a40b9d58c2806064452e (MD5) Previous issue date: 1995

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