A process-based grid model for the simulation of range expansion of Spartina alterniﬂora on the coastal saltmarshes in the Yangtze Estuary

Ge, Zheng–Ming; Cao, Hao-Bin; Zhang, Liquan

doi:10.1016/j.ecoleng.2013.06.024

Cited by 35 publications

(29 citation statements)

References 22 publications

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“…australis , and even mangrove species [ Zhang et al ., ; Li et al ., , ], have invaded the entire Chinese coast. In addition to its photosynthetic capacity, its strong competitiveness in China is largely attributed to its broad ecological amplitude [ Li et al ., ; Huang , ], great seed production [ Xiao et al ., ], high genetic diversity [ Wang et al ., ], and efficient dispersal through both sexual reproduction and asexual cloning [ Ge et al ., ].…”

Section: Discussionmentioning

confidence: 99%

Plant invasion impacts on the gross and net primary production of the salt marsh on eastern coast of China: Insights from leaf to ecosystem

Guo

Zhao

et al. 2015

JGR Biogeosciences

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The exotic Spartina alterniflora from North America has been rapidly invading the entire Chinese coast, while the impacts of plant invasion on the gross (GPP) and net primary production (NPP) of the coastal salt marshes were less known. In this study, we investigated the photosynthetic performance, leaf characteristics, and primary production of the exotic C 4 grass and the dominant native C 3 grass (Phragmites australis) in two marsh mixtures (equipped with eddy covariance systems) in the Yangtze Estuary. The light-saturated photosynthetic rate and annual peak leaf area index (LAI) of S. alterniflora was higher than that of P. australis throughout the growing season. The leaf nitrogen content of P. australis declined sharper during the latter growing season than that of S. alterniflora. The leaf-to-canopy production model with species-specific (C 3 and C 4 types) parameterizations could reasonably simulate the daily trends and annual GPP amount against the 3 year flux measurements from 2005 to 2007, and the modeled NPP agreed with biomass measurements from the two species during 2012. The percentage contributions of GPP between S. alterniflora and P. australis were on average 5.82:1 and 2.91:1 in the two mixtures, respectively. The annual NPP amounts from S. alterniflora were higher by approximately 1.6 times than that from P. australis. Our results suggested that higher photosynthesis efficiency, higher LAI, and longer growing season resulted in greater GPP and NPP in the exotic species relative to the native species. The rapid expansion rate of S. alterniflora further made it the leading contributor of primary production in the salt marsh.

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Section: Discussionmentioning

confidence: 99%

Plant invasion impacts on the gross and net primary production of the salt marsh on eastern coast of China: Insights from leaf to ecosystem

Guo

Zhao

et al. 2015

JGR Biogeosciences

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“…Historical survey has indicated that the rapid invasion of S . alterniflora could largely be attributed to a greater distance of seedling dispersal, a larger seed bank, and a higher survival rate of its propagules relative to the two dominant native species [ Xiao et al ., , ; Ge et al ., , ]. Previous studies also demonstrated that S .…”

Section: Discussionmentioning

confidence: 95%

“…Based on the results of previous studies, a detailed model of vegetation pattern was developed to aid in the understanding of the biotic and abiotic factors that regulate the spatiotemporal dynamics of the coastal vegetation communities including exotic S . alterniflora (Poaceae) and dominant native species of Scirpus mariqueter (Cyperaceae) and Phragmites australis (Poaceae) [ Ge et al ., , ]. At the same time, a process‐based primary production model was developed in combination with the vegetation pattern model for exotic and native plants in relation to their biochemical properties, leaf‐to‐canopy characteristics, and plant phenology [ Ge et al ., ].…”

Section: Introductionmentioning

confidence: 99%

Future vegetation patterns and primary production in the coastal wetlands of East China under sea level rise, sediment reduction, and saltwater intrusion

Cao

Cui

et al. 2015

JGR Biogeosciences

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To explore the effects of sea level rise (SLR), sediment reduction (SR), and saltwater intrusion (SWI) on the vegetation patterns and primary production of one exotic (Spartina alterniflora) and two native dominant (Scirpus mariqueter and Phragmites australis) species in the coastal wetlands of East China, range expansion monitoring and stress experiments were conducted, followed by model prediction. After a rapid invasion period, the expansion rate of S. alterniflora slowed down due to the decreasing availability of suitable habitat under prolonged inundation. SLR was shown to decrease the colonization of S. alterniflora and the native P. australis up to 2100. In contrast, the native S. mariqueter that has a high tolerance of inundation increased in area following SLR, due to a reduction in competition from S. alterniflora in low‐lying habitats and even recolonized areas previously invaded by the exotic species. The combination of SLR and SR resulted in further degradation of S. alterniflora and P. australis, while the area of S. mariqueter was not reduced significantly. The decrease in the area of vegetation would reduce the gross primary production under SLR and SR. SWI exacerbates the impacts, especially for P. australis, because S. alterniflora and S. mariqueter have a higher tolerance of salinity. Thus, the coastal vegetation pattern was predicted to be modified due to species‐specific adaption to changed geophysical features. This study indicated that the native species better adapted to prolonged inundation and increased salinity might once again become key contributors to primary production on the muddy coasts of East China.

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“…The detailed SMM-YE was constructed using the MATLAB ® (The MathWorks, Inc., Natick, MA, the U.S.) matrix platform1618. The model consists of a spatial grid (1 m × 1 m) of interconnected cells, which are connected to all neighboring cells with a distribution probability for the spread of vegetation associated with each connection.…”

Section: Methodsmentioning

confidence: 99%

“…However, the extent to which the combined sedimentary and vegetative processes contribute to marsh resilience under SLR remains unclear. Recently, a grid-based salt marsh model for the Yangtze Estuary (SMM-YE) was developed to aid in the understanding of the biotic and abiotic factors that regulate the vegetation processes in the salt marshes1618. The model accurately reproduced the spatiotemporal dynamics of the three dominant salt marsh species Spartina alterniflora , Scirpus mariqueter and Phragmites australis in the Yangtze Estuary.…”

mentioning

confidence: 99%

Responses of eastern Chinese coastal salt marshes to sea-level rise combined with vegetative and sedimentary processes

Heng

Cao

et al. 2016

Sci Rep

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The impacts of sea-level rise (SLR) on coastal ecosystems have attracted worldwide attention in relation to global change. In this study, the salt marsh model for the Yangtze Estuary (SMM-YE, developed in China) and the Sea Level Affecting Marshes Model (SLAMM, developed in the U.S.) were used to simulate the effects of SLR on the coastal salt marshes in eastern China. The changes in the dominant species in the plant community were also considered. Predictions based on the SLAMM indicated a trend of habitat degradation up to 2100; total salt marsh habitat area continued to decline (4–16%) based on the low-level scenario, with greater losses (6–25%) predicted under the high-level scenario. The SMM-YE showed that the salt marshes could be resilient to threats of SLR through the processes of accretion of mudflats, vegetation expansion and sediment trapping by plants. This model predicted that salt marsh areas increased (3–6%) under the low-level scenario. The decrease in the total habitat area with the SMM-YE under the high-level scenario was much lower than the SLAMM prediction. Nevertheless, SLR might negatively affect the salt marsh species that are not adapted to prolonged inundation. An adaptive strategy for responding to changes in sediment resources is necessary in the Yangtze Estuary.

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A process-based grid model for the simulation of range expansion of Spartina alterniﬂora on the coastal saltmarshes in the Yangtze Estuary

Cited by 35 publications

References 22 publications

Plant invasion impacts on the gross and net primary production of the salt marsh on eastern coast of China: Insights from leaf to ecosystem

Plant invasion impacts on the gross and net primary production of the salt marsh on eastern coast of China: Insights from leaf to ecosystem

Future vegetation patterns and primary production in the coastal wetlands of East China under sea level rise, sediment reduction, and saltwater intrusion

Responses of eastern Chinese coastal salt marshes to sea-level rise combined with vegetative and sedimentary processes

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