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https://ir.library.oregonstate.edu/concern/articles/j098zc540

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  • Summary 1. Woody plant encroachment of grasslands is occurring globally, with profound ecological consequences. Attempts to restore herbaceous dominance may fail if the woody state is resilient or if intervention leads to an alternate, undesirable state. Restoration outcomes often hinge on biotic interactions – particularly on priority effects that inhibit or promote community reassembly. 2. Following experimental tree removal from conifer-invaded grasslands, we documented substantial variation in community reassembly associated with the changing abundance of the native clonal sedge Carex inops L.H. Bailey subsp. inops. We explored possible mechanisms for this variation, focusing on the nature and timing of interactions between the meadow community and Carex and on how past tree influence and prescribed fire mediate the outcomes of these interactions. 3. Meadow species increased after tree removal, but less so in burned than in unburned plots. Carex expanded dramatically after fire, particularly where past tree influence had been greater. 4. Meadow species and Carex developed an increasingly negative association over time; preemption was reciprocal, but offset in time and space. Meadow species inhibited Carex through vegetative recovery in areas of limited or recent tree influence, irrespective of fire. Carex inhibited meadow reassembly in areas of greater tree influence, but only with burning. 5. Synthesis and applications. Tree removal and fire imposed across a range of altered meadow states yielded varying outcomes, reflecting biotic interactions and species’ regenerative traits that inhibited or promoted reassembly. Fire tended to destabilize the remnant meadow community and, in areas more degraded by encroachment, stimulated release of Carex, which inhibited reassembly. Knowledge of the context dependence of biotic interactions can enhance the effectiveness of restoration by establishing the bounds within which treatments produce desirable or undesirable outcomes.
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  • description.provenance : Made available in DSpace on 2016-02-18T19:18:39Z (GMT). No. of bitstreams: 7 OlsonAnnetteIntegrativeBioPastTreeInfluence.pdf: 620627 bytes, checksum: 99870492e1c8e35d7467f3b22f0a233e (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(FigureS1).pdf: 431304 bytes, checksum: 070f5d71895bf301cbc3f1e3a37fac3c (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(FigureS2).pdf: 341978 bytes, checksum: bf7631e35e4711079194835d4c09d213 (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(FigureS3).pdf: 350033 bytes, checksum: e383cabc994970fd212e10a5a1124ad6 (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(FigureS4).pdf: 15235 bytes, checksum: 087514ecd8e9bbd69e518f692f6ac85b (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(TableS1).pdf: 16319 bytes, checksum: 62d6d4a6476627a33d395fcbe88d3857 (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(AppendixS1).pdf: 14031 bytes, checksum: 615563cea7f9dd4c21be47765d971b8e (MD5) Previous issue date: 2016-02
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2016-02-18T19:18:39Z (GMT) No. of bitstreams: 7 OlsonAnnetteIntegrativeBioPastTreeInfluence.pdf: 620627 bytes, checksum: 99870492e1c8e35d7467f3b22f0a233e (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(FigureS1).pdf: 431304 bytes, checksum: 070f5d71895bf301cbc3f1e3a37fac3c (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(FigureS2).pdf: 341978 bytes, checksum: bf7631e35e4711079194835d4c09d213 (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(FigureS3).pdf: 350033 bytes, checksum: e383cabc994970fd212e10a5a1124ad6 (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(FigureS4).pdf: 15235 bytes, checksum: 087514ecd8e9bbd69e518f692f6ac85b (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(TableS1).pdf: 16319 bytes, checksum: 62d6d4a6476627a33d395fcbe88d3857 (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(AppendixS1).pdf: 14031 bytes, checksum: 615563cea7f9dd4c21be47765d971b8e (MD5)
  • description.provenance : Submitted by Patricia Black (patricia.black@oregonstate.edu) on 2016-02-18T19:18:14Z No. of bitstreams: 7 OlsonAnnetteIntegrativeBioPastTreeInfluence.pdf: 620627 bytes, checksum: 99870492e1c8e35d7467f3b22f0a233e (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(FigureS1).pdf: 431304 bytes, checksum: 070f5d71895bf301cbc3f1e3a37fac3c (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(FigureS2).pdf: 341978 bytes, checksum: bf7631e35e4711079194835d4c09d213 (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(FigureS3).pdf: 350033 bytes, checksum: e383cabc994970fd212e10a5a1124ad6 (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(FigureS4).pdf: 15235 bytes, checksum: 087514ecd8e9bbd69e518f692f6ac85b (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(TableS1).pdf: 16319 bytes, checksum: 62d6d4a6476627a33d395fcbe88d3857 (MD5) OlsonAnnetteIntegrativeBioPastTreeInfluence(AppendixS1).pdf: 14031 bytes, checksum: 615563cea7f9dd4c21be47765d971b8e (MD5)

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