Sea-Level Rise and Coastal Wetlands

Blankespoor, Brian; Dasgupta, Susmita; Laplante, Benoı̂t

doi:10.1007/s13280-014-0500-4

Cited by 95 publications

(61 citation statements)

References 38 publications

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“…In a separate but related study,Blankespoor et al (2014) quantify the impact of a 1 m sea-level rise on coastal wetlands in 86 developing countries and territories and find that around 68% of the wetlands in these countries are at risk.…”

mentioning

confidence: 99%

Climate change impacts on rural poverty in low-elevation coastal zones

Barbier

2015

Estuarine, Coastal and Shelf Science

119

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mentioning

confidence: 99%

Climate change impacts on rural poverty in low-elevation coastal zones

Barbier

2015

Estuarine, Coastal and Shelf Science

119

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“…Salt marsh, a threatened coastal habitat, is estimated to decline on a global scale due to sea-level rise (Blankespoor, Dasgupta, & Laplante, 2014;Craft et al, 2009;Crosby et al, 2016;Spencer et al, 2016), and is also vulnerable to interannual variations in precipitation and temperature (Dunton, Hardegree, & Whitledge, 2001;Hanson et al, 2016;Osland et al, 2016). Interannual variation in the climate can result in changes in the species composition as abiotic stressors like flooding, warming and increased salinity affect the biodiversity, species composition and distribution of coastal plant communities (Gedan & Bertness, 2009;Hook, Buford, & Williams, 1991;McKee, Mendelssohn, & Materne, 2004).…”

Section: Introductionmentioning

confidence: 99%

Turnover and change in plant species composition in a shielded salt marsh following variation in precipitation and temperature

Andersen

Skærbæk

Sørensen

et al. 2020

J Vegetation Science

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Questions: Temperature and precipitation variation between years may affect plant species composition directly or indirectly. We wish to investigate whether salt marsh edaphic conditions and plant species composition change as a result of climatic variation. Further, whether areas with the largest edaphic variations also experience the largest change in species composition and turnover. Finally, do temperature and precipitation variations change the way the plant community is able to respond to natural edaphic gradients? Location: Bygholmengen, a shielded salt marsh in Vejlerne, Denmark, Northern Europe. Methods: Botanical surveys were conducted and soil samples collected from 40 plots during a wet and dry summer to register changes in vegetation cover, species richness composition and edaphic factors (moisture, nutrients, salinity). These data were used to calculate dissimilarities in species composition, temporal turnover and environmental dissimilarity between years. A linear mixed-effects model was used to link species richness with the measured edaphic factors.Results: We found that the precipitation and temperature variations altered the edaphic conditions; furthermore, the vegetation cover and species richness decreased when conditions were dry whereas the number of salt marsh species increased. Further, species composition changed significantly between years, and sampling plots that experienced the least edaphic change also retained more species between years. Species richness responded more to changes in nutrient availability during wet than dry conditions. Conclusion: Our results pointed toward the climatic variations, and subsequent change in edaphic conditions, being responsible for the significant change in species composition as areas with the least change in edaphic factors retained most species between years. Dry conditions favored salt marsh-adapted species and the extent to which increased nutrient levels led to a higher species richness decreased in dry compared to wet conditions. K E Y W O R D S biodiversity, coastal habitat, Denmark, environmental dissimilarity, salt meadow, species richness, temporal turnover, vegetation 466 | Additional supporting information may be found online in the Supporting Information section. Appendix S1. A map of the study site along with images of the area in 2017 and 2018 Appendix S2. List of salt marsh species How to cite this article: Andersen LH, Skaerbaek ASK, Sørensen TB, et al. Turnover and change in plant species composition in a shielded salt marsh following variation in precipitation and temperature. J Veg Sci. 2020;31:465-475.

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“…Coastal wetlands can be significantly affected by increases in water levels through the following three major ways: increased inundation period, increased surface erosion and saltwater intrusion (Blankespoor et al 2014). Although increased flooding can potentially aid the survival of wetlands through promoting sedimentation and biomass growth (e.g.…”

Section: Introductionmentioning

confidence: 99%

Impact of Barrier Breaching on Wetland Ecosystems under the Influence of Storm Surge, Sea-Level Rise and Freshwater Discharge

Leonardi

Plater

2019

Wetlands

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Coastal wetland ecosystems and biodiversity are susceptible to changes in salinity brought about by the local effects of climate change, meteorological extremes, coastal evolution and human intervention. This study investigates changes in the salinity of surface water and the associated impacts on back-barrier wetlands as a result of breaching of a barrier beach and under the compound action of different surge heights, accelerated sea-level rise (SLR), river discharge and rainfall. We show that barrier breaching can have significant effects in terms of vegetation die-back even without the occurrence of large storm surges or in the absence of SLR, and that rainfall alone is unlikely to be sufficient to mitigate increased salinity due to direct tidal flushing. Results demonstrate that an increase in sea level corresponding to the RCP8.5 scenario for year 2100 causes a greater impact in terms of reedbed loss than storm surges up to 2 m with no SLR. In mitigation of the consequent changes in wetland ecology, regulation of relatively small and continuous river discharge can be regarded as a strategy for the management of coastal back-barrier wetland habitats and for the maintenance of brackish ecosystems. As such, this study provides a tool for scoping the potential impacts of storms, climate change and alternative management strategies on existing wetland habitats and species.

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Sea-Level Rise and Coastal Wetlands

Cited by 95 publications

References 38 publications

Climate change impacts on rural poverty in low-elevation coastal zones

Climate change impacts on rural poverty in low-elevation coastal zones

Turnover and change in plant species composition in a shielded salt marsh following variation in precipitation and temperature

Impact of Barrier Breaching on Wetland Ecosystems under the Influence of Storm Surge, Sea-Level Rise and Freshwater Discharge

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