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Habitat structure modified by an invasive grass enhances inundation withstanding in a salt-marsh wolf spider

Julien Pétillon, Kevin Lambeets UGent, William Montaigne, Jean-Pierre Maelfait UGent and Dries Bonte UGent (2010) BIOLOGICAL INVASIONS. 12(9). p.3219-3226
abstract
Vegetation and underground structures are known to influence flood avoidance and flood resistance in invertebrates. In bimonthly-flooded European salt marshes, recent invasions by the nitrophilous grass Elymus athericus strongly modified usual habitat structure, notably by the production of a deep litter layer. Consequently, invaded habitats provide more interstitial spaces that may act as a refuge during flood events. By using both controlled and field designs, we tested whether invaded habitats may change the ability to resist flooding by the creation of new refuges during tides for a ground-living, predatory arthropod. The wolf spider Arctosa fulvolineata was employed as a model species since it occurs abundantly in both invaded and uninvaded salt-marsh habitats. In the field, its abundance strongly decreased (divided by three) after tidal flooding in uninvaded habitats by but did not change in invaded patches. Under controlled laboratory conditions, ten times more individuals withstood simulated flooding in the presence of litter and less decided to float. The presence of litter did not influence flood resistance, i.e. survival underwater. Our results show that habitat structure (i.e. the presence of litter) influences flood-avoiding behavior of A. fulvolineata, by providing more refuges. As the invasion of E. athericus alters salt-marsh habitat structure, it may enhance population size of a rare predatory spider by changing its behavior during flooding and resulting in less deleterious impacts of tides. Yet biological invasions are detrimental for biodiversity conservation, our study shows that an invasive species might indirectly benefit a few mobile rare species in a flood-disturbed habitat.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
PITFALL TRAPS, SAINT-MICHEL BAY, DISTURBANCE, Flooding disturbance, Intertidal ecosystem, Refuges, Arctosa fulvolineata, PLANT ELYMUS-ATHERICUS, TERRESTRIAL INVERTEBRATES, POPULATION-STRUCTURE, ELYTRIGIA-PYCNANTHA, WADDEN SEA, COMMUNITIES, ADAPTATION
journal title
BIOLOGICAL INVASIONS
Biol. Invasions
volume
12
issue
9
pages
3219 - 3226
Web of Science type
Article
Web of Science id
000280892600033
JCR category
BIODIVERSITY CONSERVATION
JCR impact factor
3.474 (2010)
JCR rank
7/33 (2010)
JCR quartile
1 (2010)
ISSN
1387-3547
DOI
10.1007/s10530-010-9714-y
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1058224
handle
http://hdl.handle.net/1854/LU-1058224
date created
2010-10-13 10:55:59
date last changed
2016-12-19 15:44:34
@article{1058224,
  abstract     = {Vegetation and underground structures are known to influence flood avoidance and flood resistance in invertebrates. In bimonthly-flooded European salt marshes, recent invasions by the nitrophilous grass Elymus athericus strongly modified usual habitat structure, notably by the production of a deep litter layer. Consequently, invaded habitats provide more interstitial spaces that may act as a refuge during flood events. By using both controlled and field designs, we tested whether invaded habitats may change the ability to resist flooding by the creation of new refuges during tides for a ground-living, predatory arthropod. The wolf spider Arctosa fulvolineata was employed as a model species since it occurs abundantly in both invaded and uninvaded salt-marsh habitats. In the field, its abundance strongly decreased (divided by three) after tidal flooding in uninvaded habitats by but did not change in invaded patches. Under controlled laboratory conditions, ten times more individuals withstood simulated flooding in the presence of litter and less decided to float. The presence of litter did not influence flood resistance, i.e. survival underwater. Our results show that habitat structure (i.e. the presence of litter) influences flood-avoiding behavior of A. fulvolineata, by providing more refuges. As the invasion of E. athericus alters salt-marsh habitat structure, it may enhance population size of a rare predatory spider by changing its behavior during flooding and resulting in less deleterious impacts of tides. Yet biological invasions are detrimental for biodiversity conservation, our study shows that an invasive species might indirectly benefit a few mobile rare species in a flood-disturbed habitat.},
  author       = {P{\'e}tillon, Julien and Lambeets, Kevin and Montaigne, William and Maelfait, Jean-Pierre and Bonte, Dries},
  issn         = {1387-3547},
  journal      = {BIOLOGICAL INVASIONS},
  keyword      = {PITFALL TRAPS,SAINT-MICHEL BAY,DISTURBANCE,Flooding disturbance,Intertidal ecosystem,Refuges,Arctosa fulvolineata,PLANT ELYMUS-ATHERICUS,TERRESTRIAL INVERTEBRATES,POPULATION-STRUCTURE,ELYTRIGIA-PYCNANTHA,WADDEN SEA,COMMUNITIES,ADAPTATION},
  language     = {eng},
  number       = {9},
  pages        = {3219--3226},
  title        = {Habitat structure modified by an invasive grass enhances inundation withstanding in a salt-marsh wolf spider},
  url          = {http://dx.doi.org/10.1007/s10530-010-9714-y},
  volume       = {12},
  year         = {2010},
}

Chicago
Pétillon, Julien, Kevin Lambeets, William Montaigne, Jean-Pierre Maelfait, and Dries Bonte. 2010. “Habitat Structure Modified by an Invasive Grass Enhances Inundation Withstanding in a Salt-marsh Wolf Spider.” Biological Invasions 12 (9): 3219–3226.
APA
Pétillon, J., Lambeets, K., Montaigne, W., Maelfait, J.-P., & Bonte, D. (2010). Habitat structure modified by an invasive grass enhances inundation withstanding in a salt-marsh wolf spider. BIOLOGICAL INVASIONS, 12(9), 3219–3226.
Vancouver
1.
Pétillon J, Lambeets K, Montaigne W, Maelfait J-P, Bonte D. Habitat structure modified by an invasive grass enhances inundation withstanding in a salt-marsh wolf spider. BIOLOGICAL INVASIONS. 2010;12(9):3219–26.
MLA
Pétillon, Julien, Kevin Lambeets, William Montaigne, et al. “Habitat Structure Modified by an Invasive Grass Enhances Inundation Withstanding in a Salt-marsh Wolf Spider.” BIOLOGICAL INVASIONS 12.9 (2010): 3219–3226. Print.