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Plant traits of propagule banks and standing vegetation reveal flooding alleviates impacts of agriculture on wetland restoration

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Plant traits of propagule banks and standing vegetation reveal flooding alleviates impacts of agriculture on wetland restoration. / Dawson, Samantha K.; Warton, David I.; Kingsford, Richard T.; Berney, Peter; Keith, David A.; Catford, Jane A.

In: JOURNAL OF APPLIED ECOLOGY, 12.2017.

Research output: Contribution to journalArticlepeer-review

Harvard

Dawson, SK, Warton, DI, Kingsford, RT, Berney, P, Keith, DA & Catford, JA 2017, 'Plant traits of propagule banks and standing vegetation reveal flooding alleviates impacts of agriculture on wetland restoration', JOURNAL OF APPLIED ECOLOGY. https://doi.org/10.1111/1365-2664.12922

APA

Dawson, S. K., Warton, D. I., Kingsford, R. T., Berney, P., Keith, D. A., & Catford, J. A. (2017). Plant traits of propagule banks and standing vegetation reveal flooding alleviates impacts of agriculture on wetland restoration. JOURNAL OF APPLIED ECOLOGY. https://doi.org/10.1111/1365-2664.12922

Vancouver

Dawson SK, Warton DI, Kingsford RT, Berney P, Keith DA, Catford JA. Plant traits of propagule banks and standing vegetation reveal flooding alleviates impacts of agriculture on wetland restoration. JOURNAL OF APPLIED ECOLOGY. 2017 Dec. https://doi.org/10.1111/1365-2664.12922

Author

Dawson, Samantha K. ; Warton, David I. ; Kingsford, Richard T. ; Berney, Peter ; Keith, David A. ; Catford, Jane A. / Plant traits of propagule banks and standing vegetation reveal flooding alleviates impacts of agriculture on wetland restoration. In: JOURNAL OF APPLIED ECOLOGY. 2017.

Bibtex Download

@article{1c546aa12dfb4844b5ff8d36e5f9e564,
title = "Plant traits of propagule banks and standing vegetation reveal flooding alleviates impacts of agriculture on wetland restoration",
abstract = "1.Restoration of degraded plant communities requires understanding of community assembly processes. Human land-use can influence plant community assembly by altering environmental conditions and species? dispersal patterns. Flooding, including from environmental flows, may counteract land-use effects on wetland vegetation. We examined the influence of land-use history and flood frequency on the functional composition of wetland plant communities along a regulated river. 2.We applied fourth corner modeling to determine species? trait-based responses to flooding and land-use by combining data on i) the occupancy and abundance of species in propagule banks and standing vegetation, ii) species traits, and iii) environmental conditions of 22 standing vegetation and 108 soil propagule bank study sites. We used analysis of deviance to test how well each dataset characterised trait-environment interactions, and generalised linear models to identify traits related to species? responses. 3.The occupancy and abundance of native species in the propagule bank and standing vegetation increased with flood frequency and decreased with duration of agricultural land-use. Species in standing vegetation with water-borne propagule dispersal (hydrochory) showed similar trends. In contrast, species with higher specific leaf area were associated with longer land-use duration.4.Identifying trait-based differences in the propagule bank and standing vegetation can help disentangle effects of dispersal and environmental filters. The occupancy and abundance of hydrochorous species in standing vegetation were negatively related to land-use duration, but hydrochorous species were positively related to land-use duration based on their abundance in the propagule bank. This suggests that land-use does not limit plant dispersal, but acts as an in situ abiotic filter limiting species presence in standing vegetation.5.Synthesis: Land-use duration and flood frequency have opposite effects on plant community traits in floodplain wetlands of the Macquarie Marshes, Australia. Legacies of agriculture can impede restoration of plant communities. Environmental flows that increase flooding may alleviate these impacts, especially in areas that have been used for agriculture for over 20 years, by providing dispersal and environmental filters that favour native wetland species. More flooding will likely be required to restore floodplains with longer histories of agricultural land-use compared to floodplains less impacted by agriculture. ",
author = "Dawson, {Samantha K.} and Warton, {David I.} and Kingsford, {Richard T.} and Peter Berney and Keith, {David A.} and Catford, {Jane A.}",
year = "2017",
month = dec,
doi = "10.1111/1365-2664.12922",
language = "English",
journal = "JOURNAL OF APPLIED ECOLOGY",
issn = "0021-8901",
publisher = "Wiley-Blackwell",

}

RIS (suitable for import to EndNote) Download

TY - JOUR

T1 - Plant traits of propagule banks and standing vegetation reveal flooding alleviates impacts of agriculture on wetland restoration

AU - Dawson, Samantha K.

AU - Warton, David I.

AU - Kingsford, Richard T.

AU - Berney, Peter

AU - Keith, David A.

AU - Catford, Jane A.

PY - 2017/12

Y1 - 2017/12

N2 - 1.Restoration of degraded plant communities requires understanding of community assembly processes. Human land-use can influence plant community assembly by altering environmental conditions and species? dispersal patterns. Flooding, including from environmental flows, may counteract land-use effects on wetland vegetation. We examined the influence of land-use history and flood frequency on the functional composition of wetland plant communities along a regulated river. 2.We applied fourth corner modeling to determine species? trait-based responses to flooding and land-use by combining data on i) the occupancy and abundance of species in propagule banks and standing vegetation, ii) species traits, and iii) environmental conditions of 22 standing vegetation and 108 soil propagule bank study sites. We used analysis of deviance to test how well each dataset characterised trait-environment interactions, and generalised linear models to identify traits related to species? responses. 3.The occupancy and abundance of native species in the propagule bank and standing vegetation increased with flood frequency and decreased with duration of agricultural land-use. Species in standing vegetation with water-borne propagule dispersal (hydrochory) showed similar trends. In contrast, species with higher specific leaf area were associated with longer land-use duration.4.Identifying trait-based differences in the propagule bank and standing vegetation can help disentangle effects of dispersal and environmental filters. The occupancy and abundance of hydrochorous species in standing vegetation were negatively related to land-use duration, but hydrochorous species were positively related to land-use duration based on their abundance in the propagule bank. This suggests that land-use does not limit plant dispersal, but acts as an in situ abiotic filter limiting species presence in standing vegetation.5.Synthesis: Land-use duration and flood frequency have opposite effects on plant community traits in floodplain wetlands of the Macquarie Marshes, Australia. Legacies of agriculture can impede restoration of plant communities. Environmental flows that increase flooding may alleviate these impacts, especially in areas that have been used for agriculture for over 20 years, by providing dispersal and environmental filters that favour native wetland species. More flooding will likely be required to restore floodplains with longer histories of agricultural land-use compared to floodplains less impacted by agriculture.

AB - 1.Restoration of degraded plant communities requires understanding of community assembly processes. Human land-use can influence plant community assembly by altering environmental conditions and species? dispersal patterns. Flooding, including from environmental flows, may counteract land-use effects on wetland vegetation. We examined the influence of land-use history and flood frequency on the functional composition of wetland plant communities along a regulated river. 2.We applied fourth corner modeling to determine species? trait-based responses to flooding and land-use by combining data on i) the occupancy and abundance of species in propagule banks and standing vegetation, ii) species traits, and iii) environmental conditions of 22 standing vegetation and 108 soil propagule bank study sites. We used analysis of deviance to test how well each dataset characterised trait-environment interactions, and generalised linear models to identify traits related to species? responses. 3.The occupancy and abundance of native species in the propagule bank and standing vegetation increased with flood frequency and decreased with duration of agricultural land-use. Species in standing vegetation with water-borne propagule dispersal (hydrochory) showed similar trends. In contrast, species with higher specific leaf area were associated with longer land-use duration.4.Identifying trait-based differences in the propagule bank and standing vegetation can help disentangle effects of dispersal and environmental filters. The occupancy and abundance of hydrochorous species in standing vegetation were negatively related to land-use duration, but hydrochorous species were positively related to land-use duration based on their abundance in the propagule bank. This suggests that land-use does not limit plant dispersal, but acts as an in situ abiotic filter limiting species presence in standing vegetation.5.Synthesis: Land-use duration and flood frequency have opposite effects on plant community traits in floodplain wetlands of the Macquarie Marshes, Australia. Legacies of agriculture can impede restoration of plant communities. Environmental flows that increase flooding may alleviate these impacts, especially in areas that have been used for agriculture for over 20 years, by providing dispersal and environmental filters that favour native wetland species. More flooding will likely be required to restore floodplains with longer histories of agricultural land-use compared to floodplains less impacted by agriculture.

U2 - 10.1111/1365-2664.12922

DO - 10.1111/1365-2664.12922

M3 - Article

JO - JOURNAL OF APPLIED ECOLOGY

JF - JOURNAL OF APPLIED ECOLOGY

SN - 0021-8901

ER -

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