GSTDTAP  > 气候变化
DOI10.1029/2020GL089415
How old are marshes on the East Coast, USA? Complex patterns in wetland age within and among regions
Anna E. Braswell; James B. Heffernan; Matthew L. Kirwan
2020-09-22
发表期刊Geophysical Research Letters
出版年2020
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 ~4000 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.

领域气候变化
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/296362
专题气候变化
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Anna E. Braswell,James B. Heffernan,Matthew L. Kirwan. How old are marshes on the East Coast, USA? Complex patterns in wetland age within and among regions[J]. Geophysical Research Letters,2020.
APA Anna E. Braswell,James B. Heffernan,&Matthew L. Kirwan.(2020).How old are marshes on the East Coast, USA? Complex patterns in wetland age within and among regions.Geophysical Research Letters.
MLA Anna E. Braswell,et al."How old are marshes on the East Coast, USA? Complex patterns in wetland age within and among regions".Geophysical Research Letters (2020).
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