Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL089121 |
Coastal Marsh Degradation into Ponds Induces Irreversible Elevation Loss Relative to Sea Level in a Microtidal System | |
Lennert Schepers; Patrick Brennand; Matthew L. Kirwan; Glenn R. Guntenspergen; Stijn Temmerman | |
2020-09-09 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | Coastal marshes and their valuable ecosystem services are feared to be lost by sea level rise, yet the mechanisms of marsh degradation into ponds and potential recovery are poorly understood. We quantified and analyzed elevations of marsh surfaces and pond bottoms along a marsh loss gradient (Blackwater River, Maryland, U.S.A.). Our analyses show that ponds deepen with increasing tidal channel width connecting the ponds to the river, indicating a new feedback mechanism where channels lead to enhanced tidal export of pond bottom material. Pond elevations also decrease with increasing pond size, consistent with previous work identifying a positive feedback between wind‐wave erosion and pond size. These two positive feedbacks, combined with bimodal elevation distributions and sharp topographic boundaries between interior ponds and the marsh platform, indicate alternative elevation states and imply that marsh loss by pond formation is nearly irreversible once pond deepening exceeds a critical level. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/293979 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Lennert Schepers,Patrick Brennand,Matthew L. Kirwan,et al. Coastal Marsh Degradation into Ponds Induces Irreversible Elevation Loss Relative to Sea Level in a Microtidal System[J]. Geophysical Research Letters,2020. |
APA | Lennert Schepers,Patrick Brennand,Matthew L. Kirwan,Glenn R. Guntenspergen,&Stijn Temmerman.(2020).Coastal Marsh Degradation into Ponds Induces Irreversible Elevation Loss Relative to Sea Level in a Microtidal System.Geophysical Research Letters. |
MLA | Lennert Schepers,et al."Coastal Marsh Degradation into Ponds Induces Irreversible Elevation Loss Relative to Sea Level in a Microtidal System".Geophysical Research Letters (2020). |
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