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Recruitment limitation of native species in invaded coastal dune communities

Journal Article


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Abstract


  • "Recruitment limitation may limit the ability of sites to regenerate after disturbances such as weed invasion and weed management. We investigated seed bank constraints and dispersal limitation in coastal dune communities on the east coast of Australia. The ability of sites to regenerate naturally following weed removal was assessed in coastal dune communities invaded by the invasive alien, bitou bush (Chrysanthemoides monilifera subsp. rotundata). To investigate recruitment limitation, seed banks and vegetation of invaded, native, intensively managed (selective application of herbicide and some re-vegetation) and extensively managed (large-scale, non-selective herbicide application) sites were compared. We investigated the dispersal mechanisms of species in the seed bank and vegetation to determine if communities might be dispersal-limited, i.e. contain significant numbers of species with only short-distance dispersal capabilities. Species richness and composition of soil seed banks differed from the vegetation in foredunes and hinddunes. Invasion depleted seed banks further. About half of the species had short-distance dispersal mechanisms indicating the potential for dispersal limitation. Secondary weed invasion following management was evident although alien species occurred in both seed banks and vegetation. Our results indicated that coastal dune communities suffer recruitment limitation. Native, managed and invaded dune communities appear to be both seed bank and dispersal-limited although management and invasion exacerbates recruitment. Regeneration of coastal dune communities will require active reintroduction of species, particularly those with short-distance dispersal mechanisms."

UOW Authors


  •   French, Kris O.
  •   Mason, Tanya J. (external author)
  •   Sullivan, Natalie A. (external author)

Publication Date


  • 2011

Citation


  • French, K. O., Mason, T. J. & Sullivan, N. (2011). Recruitment limitation of native species in invaded coastal dune communities. Plant Ecology, 212 (4), 601-609.

Scopus Eid


  • 2-s2.0-79952764121

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7111&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/3769

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 601

End Page


  • 609

Volume


  • 212

Issue


  • 4

Abstract


  • "Recruitment limitation may limit the ability of sites to regenerate after disturbances such as weed invasion and weed management. We investigated seed bank constraints and dispersal limitation in coastal dune communities on the east coast of Australia. The ability of sites to regenerate naturally following weed removal was assessed in coastal dune communities invaded by the invasive alien, bitou bush (Chrysanthemoides monilifera subsp. rotundata). To investigate recruitment limitation, seed banks and vegetation of invaded, native, intensively managed (selective application of herbicide and some re-vegetation) and extensively managed (large-scale, non-selective herbicide application) sites were compared. We investigated the dispersal mechanisms of species in the seed bank and vegetation to determine if communities might be dispersal-limited, i.e. contain significant numbers of species with only short-distance dispersal capabilities. Species richness and composition of soil seed banks differed from the vegetation in foredunes and hinddunes. Invasion depleted seed banks further. About half of the species had short-distance dispersal mechanisms indicating the potential for dispersal limitation. Secondary weed invasion following management was evident although alien species occurred in both seed banks and vegetation. Our results indicated that coastal dune communities suffer recruitment limitation. Native, managed and invaded dune communities appear to be both seed bank and dispersal-limited although management and invasion exacerbates recruitment. Regeneration of coastal dune communities will require active reintroduction of species, particularly those with short-distance dispersal mechanisms."

UOW Authors


  •   French, Kris O.
  •   Mason, Tanya J. (external author)
  •   Sullivan, Natalie A. (external author)

Publication Date


  • 2011

Citation


  • French, K. O., Mason, T. J. & Sullivan, N. (2011). Recruitment limitation of native species in invaded coastal dune communities. Plant Ecology, 212 (4), 601-609.

Scopus Eid


  • 2-s2.0-79952764121

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7111&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/3769

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 601

End Page


  • 609

Volume


  • 212

Issue


  • 4