Maintenance of salt barrens inhibited landward invasion of Spartina species in salt marshes

Man Qi, Tao Sun*, Heyue Zhang, Meisha Zhu, Ying-Wei Yang, Dongdong Shao, Alexey Voinov

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)
40 Downloads (Pure)

Abstract

Spartina spp. (cordgrasses) often dominates intertidal mudflats and/or low marshes. The landward invasion of these species was typically thought to be restrained by low tidal inundation frequencies and interspecific competition. We noticed that the reported soil salinity levels in some salt marshes were much higher than those at the mean higher high water level, which might inhibit the landward invasion of cordgrass. To test this possibility, we transplanted Spartina alterniflora across an elevational gradient in an invaded salt marsh in the Yellow River Delta National Nature Reserve, where a salt accumulation zone (i.e., salt barren) was previously observed. We found that S. alterniflora was significantly inhibited by the salt barren in high marsh regions, although it performed better at upland and low marsh regions. A common garden experiment further elucidated that S. alterniflora performed best at low salinity levels and that this species is less sensitive to inundation frequency. Our results indicated that the salt barren inhibited the landward invasion of S. alterniflora in salt marshes and provided a natural barrier to protect the upland from invasion. Though field observations suggest that S. alterniflora could propagate along tidal channels, which provide low-salinity corridors for the dispersal of propagules, natural salt barrens can inhibit the landward invasion of Spartina in salt marshes. However, artificial disturbances that break the salt barren band in salt marshes (e.g., artificial ditches) might accelerate the invasion of Spartina spp. This new finding should alert salt marsh managers to pay attention to artificial ditches and/or other human activities when attempting to control Spartina invasion.

Original languageEnglish
Article numbere01982
Number of pages11
JournalEcosphere
Volume8
Issue number10
DOIs
Publication statusPublished - Oct 2017

Fingerprint

Spartina
Spartina alterniflora
salt marshes
saltmarsh
salt
salts
marshes
marsh
highlands
natural barrier
salinity
Yellow River
tidal channel
mudflat
interspecific competition
soil salinity
nature reserve
gardens
garden
conservation areas

Keywords

  • Elevational gradient
  • Invasion Control
  • Salinity Gradient
  • Salt Marsh
  • Stress Tolerance
  • Tidal Flooding
  • Wetland conservation.
  • ITC-ISI-JOURNAL-ARTICLE
  • ITC-GOLD

Cite this

Qi, Man ; Sun, Tao ; Zhang, Heyue ; Zhu, Meisha ; Yang, Ying-Wei ; Shao, Dongdong ; Voinov, Alexey. / Maintenance of salt barrens inhibited landward invasion of Spartina species in salt marshes. In: Ecosphere. 2017 ; Vol. 8, No. 10.
@article{de86d245456e4dd6b5c013afc342a838,
title = "Maintenance of salt barrens inhibited landward invasion of Spartina species in salt marshes",
abstract = "Spartina spp. (cordgrasses) often dominates intertidal mudflats and/or low marshes. The landward invasion of these species was typically thought to be restrained by low tidal inundation frequencies and interspecific competition. We noticed that the reported soil salinity levels in some salt marshes were much higher than those at the mean higher high water level, which might inhibit the landward invasion of cordgrass. To test this possibility, we transplanted Spartina alterniflora across an elevational gradient in an invaded salt marsh in the Yellow River Delta National Nature Reserve, where a salt accumulation zone (i.e., salt barren) was previously observed. We found that S. alterniflora was significantly inhibited by the salt barren in high marsh regions, although it performed better at upland and low marsh regions. A common garden experiment further elucidated that S. alterniflora performed best at low salinity levels and that this species is less sensitive to inundation frequency. Our results indicated that the salt barren inhibited the landward invasion of S. alterniflora in salt marshes and provided a natural barrier to protect the upland from invasion. Though field observations suggest that S. alterniflora could propagate along tidal channels, which provide low-salinity corridors for the dispersal of propagules, natural salt barrens can inhibit the landward invasion of Spartina in salt marshes. However, artificial disturbances that break the salt barren band in salt marshes (e.g., artificial ditches) might accelerate the invasion of Spartina spp. This new finding should alert salt marsh managers to pay attention to artificial ditches and/or other human activities when attempting to control Spartina invasion.",
keywords = "Elevational gradient, Invasion Control, Salinity Gradient, Salt Marsh, Stress Tolerance, Tidal Flooding, Wetland conservation., ITC-ISI-JOURNAL-ARTICLE, ITC-GOLD",
author = "Man Qi and Tao Sun and Heyue Zhang and Meisha Zhu and Ying-Wei Yang and Dongdong Shao and Alexey Voinov",
year = "2017",
month = "10",
doi = "10.1002/ecs2.1982",
language = "English",
volume = "8",
journal = "Ecosphere",
issn = "2150-8925",
publisher = "Wiley-Blackwell",
number = "10",

}

Maintenance of salt barrens inhibited landward invasion of Spartina species in salt marshes. / Qi, Man; Sun, Tao; Zhang, Heyue; Zhu, Meisha; Yang, Ying-Wei; Shao, Dongdong; Voinov, Alexey.

In: Ecosphere, Vol. 8, No. 10, e01982, 10.2017.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Maintenance of salt barrens inhibited landward invasion of Spartina species in salt marshes

AU - Qi, Man

AU - Sun, Tao

AU - Zhang, Heyue

AU - Zhu, Meisha

AU - Yang, Ying-Wei

AU - Shao, Dongdong

AU - Voinov, Alexey

PY - 2017/10

Y1 - 2017/10

N2 - Spartina spp. (cordgrasses) often dominates intertidal mudflats and/or low marshes. The landward invasion of these species was typically thought to be restrained by low tidal inundation frequencies and interspecific competition. We noticed that the reported soil salinity levels in some salt marshes were much higher than those at the mean higher high water level, which might inhibit the landward invasion of cordgrass. To test this possibility, we transplanted Spartina alterniflora across an elevational gradient in an invaded salt marsh in the Yellow River Delta National Nature Reserve, where a salt accumulation zone (i.e., salt barren) was previously observed. We found that S. alterniflora was significantly inhibited by the salt barren in high marsh regions, although it performed better at upland and low marsh regions. A common garden experiment further elucidated that S. alterniflora performed best at low salinity levels and that this species is less sensitive to inundation frequency. Our results indicated that the salt barren inhibited the landward invasion of S. alterniflora in salt marshes and provided a natural barrier to protect the upland from invasion. Though field observations suggest that S. alterniflora could propagate along tidal channels, which provide low-salinity corridors for the dispersal of propagules, natural salt barrens can inhibit the landward invasion of Spartina in salt marshes. However, artificial disturbances that break the salt barren band in salt marshes (e.g., artificial ditches) might accelerate the invasion of Spartina spp. This new finding should alert salt marsh managers to pay attention to artificial ditches and/or other human activities when attempting to control Spartina invasion.

AB - Spartina spp. (cordgrasses) often dominates intertidal mudflats and/or low marshes. The landward invasion of these species was typically thought to be restrained by low tidal inundation frequencies and interspecific competition. We noticed that the reported soil salinity levels in some salt marshes were much higher than those at the mean higher high water level, which might inhibit the landward invasion of cordgrass. To test this possibility, we transplanted Spartina alterniflora across an elevational gradient in an invaded salt marsh in the Yellow River Delta National Nature Reserve, where a salt accumulation zone (i.e., salt barren) was previously observed. We found that S. alterniflora was significantly inhibited by the salt barren in high marsh regions, although it performed better at upland and low marsh regions. A common garden experiment further elucidated that S. alterniflora performed best at low salinity levels and that this species is less sensitive to inundation frequency. Our results indicated that the salt barren inhibited the landward invasion of S. alterniflora in salt marshes and provided a natural barrier to protect the upland from invasion. Though field observations suggest that S. alterniflora could propagate along tidal channels, which provide low-salinity corridors for the dispersal of propagules, natural salt barrens can inhibit the landward invasion of Spartina in salt marshes. However, artificial disturbances that break the salt barren band in salt marshes (e.g., artificial ditches) might accelerate the invasion of Spartina spp. This new finding should alert salt marsh managers to pay attention to artificial ditches and/or other human activities when attempting to control Spartina invasion.

KW - Elevational gradient

KW - Invasion Control

KW - Salinity Gradient

KW - Salt Marsh

KW - Stress Tolerance

KW - Tidal Flooding

KW - Wetland conservation.

KW - ITC-ISI-JOURNAL-ARTICLE

KW - ITC-GOLD

UR - https://ezproxy2.utwente.nl/login?url=https://webapps.itc.utwente.nl/library/2017/isi/voinov_mai.pdf

U2 - 10.1002/ecs2.1982

DO - 10.1002/ecs2.1982

M3 - Article

AN - SCOPUS:85032895839

VL - 8

JO - Ecosphere

JF - Ecosphere

SN - 2150-8925

IS - 10

M1 - e01982

ER -