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Limiting factors for seedling emergence and establishment of the invasive non-native Rosa rugosa in a coastal dune system

Kollman, Johannes; Fredriksen, Lise; Vestergaard, Peter and Bruun, Hans Henrik LU (2007) In Biological Invasions 9(1). p.31-42
Abstract
The relative importance of seed, habitat and microhabitat limitation has rarely been investigated for invasive non-native species, although this is critical for their effective management and for predicting future range expansion. Rosa rugosa is an abundant non-native shrub in coastal habitats of NW Europe; it is common along the Baltic coast but more scarce in exposed dunes of the North Sea. To investigate whether invasion of exposed dunes is limited by seed, habitat and microhabitat limitation, seedling emergence and establishment were examined in a factorial sowing, transplant and disturbance experiment. Twenty plots were randomly placed in each of five dune habitats (white dune, Empetrum dune, grey dune, outer dune heath, inner dune... (More)
The relative importance of seed, habitat and microhabitat limitation has rarely been investigated for invasive non-native species, although this is critical for their effective management and for predicting future range expansion. Rosa rugosa is an abundant non-native shrub in coastal habitats of NW Europe; it is common along the Baltic coast but more scarce in exposed dunes of the North Sea. To investigate whether invasion of exposed dunes is limited by seed, habitat and microhabitat limitation, seedling emergence and establishment were examined in a factorial sowing, transplant and disturbance experiment. Twenty plots were randomly placed in each of five dune habitats (white dune, Empetrum dune, grey dune, outer dune heath, inner dune heath), and studied over 2 years. Seedling emergence in control subplots was zero in all habitats, whereas 96% and 98% of the undisturbed and disturbed seeded subplots produced seedlings. Disturbance had a positive effect on emergence and subsequent survival in white dune, outer and inner dune heath. Seedling survival and growth, and growth of transplanted seedlings, were markedly lower in grey dune. These findings indicate that establishment of R. rugosa is seed-limited in coastal dune habitats, and that the species is able to establish in both active and fixed dunes once seeds have arrived. Although differential seedling emergence and growth indicate that habitats differ in their degree of invasion susceptibility by R. rugosa, the positive influence of small-scale disturbance suggests microhabitat limitation in some dune habitats as well. Dune management should aim to reduce seed production and dispersal of R. rugosa in near-natural sites, and anthropogenic changes of habitat dynamics should be prevented. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
seed, seed addition, grey dune, Empetrum dune, disturbance, dune heath, white dune, limitation, transplant experiment, site limitation
in
Biological Invasions
volume
9
issue
1
pages
31 - 42
publisher
Springer
external identifiers
  • wos:000243185800004
  • scopus:33845939670
ISSN
1387-3547
DOI
10.1007/s10530-006-9003-y
language
English
LU publication?
yes
id
c70cdc58-a145-4f4c-a384-126151ef1d14 (old id 167230)
date added to LUP
2007-07-02 11:56:59
date last changed
2017-01-01 04:20:18
@article{c70cdc58-a145-4f4c-a384-126151ef1d14,
  abstract     = {The relative importance of seed, habitat and microhabitat limitation has rarely been investigated for invasive non-native species, although this is critical for their effective management and for predicting future range expansion. Rosa rugosa is an abundant non-native shrub in coastal habitats of NW Europe; it is common along the Baltic coast but more scarce in exposed dunes of the North Sea. To investigate whether invasion of exposed dunes is limited by seed, habitat and microhabitat limitation, seedling emergence and establishment were examined in a factorial sowing, transplant and disturbance experiment. Twenty plots were randomly placed in each of five dune habitats (white dune, Empetrum dune, grey dune, outer dune heath, inner dune heath), and studied over 2 years. Seedling emergence in control subplots was zero in all habitats, whereas 96% and 98% of the undisturbed and disturbed seeded subplots produced seedlings. Disturbance had a positive effect on emergence and subsequent survival in white dune, outer and inner dune heath. Seedling survival and growth, and growth of transplanted seedlings, were markedly lower in grey dune. These findings indicate that establishment of R. rugosa is seed-limited in coastal dune habitats, and that the species is able to establish in both active and fixed dunes once seeds have arrived. Although differential seedling emergence and growth indicate that habitats differ in their degree of invasion susceptibility by R. rugosa, the positive influence of small-scale disturbance suggests microhabitat limitation in some dune habitats as well. Dune management should aim to reduce seed production and dispersal of R. rugosa in near-natural sites, and anthropogenic changes of habitat dynamics should be prevented.},
  author       = {Kollman, Johannes and Fredriksen, Lise and Vestergaard, Peter and Bruun, Hans Henrik},
  issn         = {1387-3547},
  keyword      = {seed,seed addition,grey dune,Empetrum dune,disturbance,dune heath,white dune,limitation,transplant experiment,site limitation},
  language     = {eng},
  number       = {1},
  pages        = {31--42},
  publisher    = {Springer},
  series       = {Biological Invasions},
  title        = {Limiting factors for seedling emergence and establishment of the invasive non-native Rosa rugosa in a coastal dune system},
  url          = {http://dx.doi.org/10.1007/s10530-006-9003-y},
  volume       = {9},
  year         = {2007},
}