Impact of Coastal Squeeze Induced by Erosion and Land Reclamation on Salt Marsh Wetlands

Journal of Marine Science and Engineering, Год журнала: 2024, Номер 13(1), С. 17 - 17

Опубликована: Дек. 27, 2024

Salt marshes are declining due to the dual pressures of coastal erosion and land reclamation. However, there remains a lack quantitative analysis regarding this reduction process its driving mechanisms. This study examines dynamics influencing factors salt marsh vegetation along eroding coastline Sheyang County, Jiangsu Province, China, between 1985 2020, using remote sensing analyze changes in artificial coastlines, water boundaries, front edge, topography. Our results showed an extensive seaward movement coastlines reclamation, coupled with severe reductions area width. Coastal further caused 10.5% decline elevation 46.7% increase slope steepness, amplifying vulnerability wave action. Native species were largely replaced by Spartina alterniflora, reducing ecological diversity. Currently, human pressure on landward side has been alleviated; thus, addressing is vital preventing loss marshes. Sediment retention engineering native restoration efforts can gradually facilitate recovery provided critical insights for sustainable management under bidirectional pressures.

Язык: Английский

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Is Spartina Alterniflora Eradication Project in Chongming Island a Nature-Based Solution?

Опубликована: Янв. 1, 2024

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Язык: Английский

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Limited life‐history plasticity in marginal population of an invasive foundation species: Unraveling the genetic underpinnings and ecological implications

Ecology and Evolution, Год журнала: 2024, Номер 14(6)

Опубликована: Июнь 1, 2024

Abstract Plant's life history can evolve in response to variation climate spatio‐temporally, but numerous multiple‐species studies overlook species‐specific (especially a foundation species) ecological effects and genetic underpinnings. For species successfully invade region, likely become species, life‐history of invasive plants exerts considerable evolutionary impacts on invaded ecosystems. We examined how an plant, Spartina alterniflora , varied its along latitudinal gradient using common gardens experiment. Two were located at range boundary tropical zone main distribution area S. temperate China. Within each population/garden, we measured the onset time three successive phenological stages constituting reproductive phase fitness trait. In low‐latitude garden with higher temperature, found that was advanced length prolonged compared high‐latitude garden. This could possibly due lower plasticity maturity time. Additionally, positively related Marginal population from tropic had lowest fitness, poor capacity cope changing environment may result reduction this population. These results reflected divergence Our study provided novel view test center–periphery hypothesis by integration across plant's highlighted significance considering evolution. Such insights help us understand long‐term consequences variation, implications for plant interaction, ecosystem functions under change.

Язык: Английский

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The risk of biological invasion by red-eared slider turtles (Trachemys scripta elegans) in China inferred from niche shifting

Ecological Indicators, Год журнала: 2024, Номер 166, С. 112296 - 112296

Опубликована: Июнь 27, 2024

Invasive alien species can cause significant economic and social-environmental damage after their invasive success. The red-eared slider (Trachemys scripta elegans) is among the first worst introduced to China has been recorded in numerous regions worldwide, not limited China. In this study, we used distribution models predict potential suitable habitat areas for T. s. elegans compare realized niche between its invaded native ranges. Additionally, forecasted changes under different future scenarios. We found that range of projected continue expanding future, imposing greater pressure on biological control efforts. constructed hypervolume eight environmental variables ranges elegans. Our study demonstrates that: 1) shifted following invasion, albeit retaining some aspects niche; 2) South, Central, East become a region rich habitats elegans; 3) influence human activities may be main reason deviation occurrence records from shifting allows subspecies better adapt new environment.

Язык: Английский

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Evaluating the impact of microorganisms in the iron plaque and rhizosphere soils of Spartina alterniflora and Suaeda salsa on the migration of arsenic in a coastal tidal flat wetland in China

Marine Pollution Bulletin, Год журнала: 2024, Номер 207, С. 116824 - 116824

Опубликована: Авг. 10, 2024

Язык: Английский

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