The influence of prolonged flooding on the growth of Spartina alterniflora in Cape Cod (Massachusetts, USA)

Smith, Stephen M.; Lee, Krista D.

doi:10.1016/j.aquabot.2015.08.002

Cited by 21 publications

(7 citation statements)

References 18 publications

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“…Furthermore, researchers found that long periods of continuous tidal inundation significantly reduced the biomass and density of Spartina alterniflora (Long et al. , Smith and Lee ). On the other hand, continuous tidal action is certainly not a prerequisite for growth, as evidenced by vigorous growth in greenhouses.…”

Section: Introductionmentioning

confidence: 99%

Maintenance of salt barrens inhibited landward invasion ofSpartinaspecies in salt marshes

Sun

Zhang

et al. 2017

Ecosphere

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. 2017. Maintenance of salt barrens inhibited landward invasion of Spartina species in salt marshes. Ecosphere 8(10):e01982. 10. 1002/ecs2.1982 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.

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Section: Introductionmentioning

confidence: 99%

Maintenance of salt barrens inhibited landward invasion ofSpartinaspecies in salt marshes

Sun

Zhang

et al. 2017

Ecosphere

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“…However, because a single physical control method is generally inefficient, the integration of two or three different physical methods is preferred [26]. Although integrated physical control methods have demonstrated effective eradication of S. alterniflora or inhibition of its germination in subsequent years, their effects on the soil ecosystem and its functioning are not clear [28,29]. Invasion control methods can affect the above-ground plant community, which could modify the soil microbial community composition and structure and subsequently affect general soil processes.…”

Section: Introductionmentioning

confidence: 99%

Responses of Soil Microbiota to Different Control Methods of the Spartina alterniflora in the Yellow River Delta

Jiang

Zhou

et al. 2022

Microorganisms

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Spartina alterniflora invasion has negative effects on the structure and functioning of coastal wetland ecosystems. Therefore, many methods for controlling S. alterniflora invasion have been developed. S. alterniflora control methods can affect plant community, which results in changes in microbial communities and subsequent changes in soil ecological processes. However, the effects of controlling S. alterniflora on soil microbial communities remain poorly understood. We aimed to examine the responses of bacterial and fungal communities to invasion control methods (cutting plus tilling treatment: CT; mechanical rolling treatment: MR). Soil bacterial and fungal community diversity and composition structure were assessed using high-throughput sequencing technology. The findings of the study showed that bacterial diversity and richness in the CT treatment reduced substantially, but fungal diversity and richness did not show any remarkable change. Bacterial and fungal diversity and richness in the MR treatment were not affected considerably. In addition, the two control methods significantly changed the soil microbial community structure. The relative abundance of bacteria negatively associated with nutrient cycling increased considerably in the CT treatment. The considerable increases in the relative abundance of certain bacterial taxa in the MR treatment may promote soil nutrient cycling. Compared with mechanical rolling, soil bacterial community diversity and structure were more sensitive to cutting plus tilling.

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“…As of late, studies have been focused on vegetation observation and monitoring, and the retrieval of chlorophyll content via non-destructive remote sensing methods, achieving many scientific results [22][23][24][25][26][27]. Due to the complexity of the radiative transfer model and growth conditions at the canopy level, the estimation of CCC has typically been carried out by combing multi-indices that can be found in many cases [28][29][30][31][32][33]. However, basing on the goal of our research, it is urgent and necessary by focusing on this specific region with the coexistence of these two species for the quantitative estimating of CCC.…”

Section: Introductionmentioning

confidence: 99%

Combining Multi-Indices by Neural Network Model for Estimating Canopy Chlorophyll Content: a Case Study of Interspecies Competition between <i>Spartina alterniflora</i> and <i>Phragmites australis</i>

Liu¹,

Shi²,

Meng³

et al. 2021

Pol. J. Environ. Stud.

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The invasive species Spartina alterniflora show a significant coexistence zonation pattern with local Phragmites australis in different mixture ratio, increasing the difficulty to monitor their distribution directly by remote sensing. Canopy chlorophyll content (CCC) is an important indicator to monitor the growth and physiological status. The objective of this study was to estimate CCC under different mixture ratio. Five spectral indices were selected and combined via back propagation (BP) neural network model for estimating CCC. Combining multi-indices yielded better results (R 2 = 0.7729, RMSE = 53.01 ug.cm -2 ) on average than the best single spectral index (R 2 = 0.7190, RMSE = 63.53 ug.cm -2 ) without distinguishing interspecies competition, with a total increase of 7.5% in the R 2 and a decrease of 16.56% in the RMSE. Meanwhile, when considering interspecies competition, the estimating results obtained by the BP neural network model achieved a further improvement of the R 2 value, ranging from 3.57% to 20.37%, while the prediction error reduced at varying degrees (maximum reduction of 23.78%). The results indicate that combining multi-indices by BP neural network model can alleviate the influence of interspecies competition and achieve higher estimating accuracy.

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The influence of prolonged flooding on the growth of Spartina alterniflora in Cape Cod (Massachusetts, USA)

Cited by 21 publications

References 18 publications

Maintenance of salt barrens inhibited landward invasion ofSpartinaspecies in salt marshes

Maintenance of salt barrens inhibited landward invasion ofSpartinaspecies in salt marshes

Responses of Soil Microbiota to Different Control Methods of the Spartina alterniflora in the Yellow River Delta

Combining Multi-Indices by Neural Network Model for Estimating Canopy Chlorophyll Content: a Case Study of Interspecies Competition between <i>Spartina alterniflora</i> and <i>Phragmites australis</i>

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