气候变化领域集成服务门户(CCPortal): How Old Are Marshes on the East Coast; USA? Complex Patterns in Wetland Age Within and Among Regions

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DOI	10.1029/2020GL089415
	How Old Are Marshes on the East Coast; USA? Complex Patterns in Wetland Age Within and Among Regions
	Braswell A.E.; Heffernan J.B.; Kirwan M.L.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	Sea-level dynamics, sediment availability, and marine energy are critical drivers of coastal wetland formation and persistence, but their roles as continental-scale drivers remain unknown. We evaluated the timing and spatial variability of wetland formation from new and existing cores collected along the Atlantic and Gulf coasts of the United States. Most basal peat ages occurred after sea-level rise slowed (after ~4,000 years before present), but predominance of sea-level rise studies may skew age estimates toward older sites. Near-coastal sites tended to be younger, indicating creation of wetlands through basin infilling and overwash events. Age distributions differed among regions, with younger wetlands in the northeast and southeast corresponding to European colonization and deforestation. Across all cores, wetland age correlated strongly with basal peat depth. Marsh age elucidates the complex interactions between sea-level rise, sediment supply, and geomorphic setting in determining timing and location of marsh formation and future wetland persistence. ©2020. The Authors.
英文关键词	Deforestation; Peat; Sea level; Age distribution; Coastal wetlands; Complex pattern; Continental scale; Sea level rise; Sediment availability; Sediment supply; Spatial variability; Wetlands; coastal wetland; colonization; deforestation; moss; peat; persistence; sea level change; sedimentation; spatial variation; wetland; Atlantic Coast [North America]; Atlantic Coast [United States]; United States
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169675
作者单位	Fisheries and Aquatic Sciences Program, School of Forest Resources and Conservation, University of Florida, Gainesville, FL, United States; Nicholas School of the Environment, Duke University, Durham, NC, United States; Virginia Institute of Marine Sciences, Gloucester Point, VA, United States
推荐引用方式 GB/T 7714	Braswell A.E.,Heffernan J.B.,Kirwan M.L.. How Old Are Marshes on the East Coast; USA? Complex Patterns in Wetland Age Within and Among Regions[J],2020,47(19).
APA	Braswell A.E.,Heffernan J.B.,&Kirwan M.L..(2020).How Old Are Marshes on the East Coast; USA? Complex Patterns in Wetland Age Within and Among Regions.Geophysical Research Letters,47(19).
MLA	Braswell A.E.,et al."How Old Are Marshes on the East Coast; USA? Complex Patterns in Wetland Age Within and Among Regions".Geophysical Research Letters 47.19(2020).