气候变化领域集成服务门户(CCPortal): Are Elevation and Open-Water Conversion of Salt Marshes Connected?

CCPortal

DOI	10.1029/2019GL086703
	Are Elevation and Open-Water Conversion of Salt Marshes Connected?
	Ganju N.K.; Defne Z.; Fagherazzi S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:3
英文摘要	Salt marsh assessments focus on vertical metrics such as accretion or lateral metrics such as open-water conversion, without exploration of how the dimensions are related. We exploited a novel geospatial data set to explore how elevation is related to the unvegetated-vegetated marsh ratio (UVVR), a lateral metric, across individual marsh “units” within four estuarine-marsh systems. We find that elevation scales consistently with the UVVR across systems, with lower elevation units demonstrating more open-water conversion and higher UVVRs. A normalized elevation-UVVR relationship converges across systems near the system-mean elevation and a UVVR of 0.1, a critical threshold identified by prior studies. This indicates that open-water conversion becomes a dominant lateral instability process at a relatively conservative elevation threshold. We then integrate the UVVR and elevation to yield lifespan estimates, which demonstrate that higher elevation marshes are more resilient to internal deterioration, with an order-of-magnitude longer lifespan than predicted for lower elevation marshes. ©2020. The Authors.
英文关键词	Deterioration; Critical threshold; Geospatial data set; Internal deterioration; Lateral instability; Life span; Marsh systems; Open water; Salt marshes; Wetlands; accretion; data set; elevation; estuarine environment; exploration; instability; open water; saltmarsh; spatial data; threshold
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/170741
作者单位	U.S. Geological Survey, Woods Hole Coastal and Marine Science Center, Woods Hole, MA, United States; Department of Earth Sciences, Boston University, Boston, MA, United States
推荐引用方式 GB/T 7714	Ganju N.K.,Defne Z.,Fagherazzi S.. Are Elevation and Open-Water Conversion of Salt Marshes Connected?[J],2020,47(3).
APA	Ganju N.K.,Defne Z.,&Fagherazzi S..(2020).Are Elevation and Open-Water Conversion of Salt Marshes Connected?.Geophysical Research Letters,47(3).
MLA	Ganju N.K.,et al."Are Elevation and Open-Water Conversion of Salt Marshes Connected?".Geophysical Research Letters 47.3(2020).