DOI: 10.1007/s10584-014-1189-x
Scopus记录号: 2-s2.0-84905389241
论文题名: Nutrient enrichment and precipitation changes do not enhance resiliency of salt marshes to sea level rise in the Northeastern U.S.
作者: Watson E.B. ; Oczkowski A.J. ; Wigand C. ; Hanson A.R. ; Davey E.W. ; Crosby S.C. ; Johnson R.L. ; Andrews H.M.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2014
卷: 125, 期: 2018-03-04 起始页码: 501
结束页码: 509
语种: 英语
Scopus关键词: Eutrophication
; Floods
; Nutrients
; Sea level
; Wetlands
; Accelerated sea-level rise
; Marsh vegetation
; Nutrient enrichments
; Orthometric heights
; Peat formation
; Precipitation change
; Precipitation regimes
; Spartina alterniflora
; Precipitation (chemical)
; Spartina alterniflora
英文摘要: In the Northeastern U.S., salt marsh area is in decline. Habitat change analysis has revealed fragmentation, displacement of high marsh by low marsh species, and marsh drowning, while development of adjacent uplands limits upslope migration. Measures of marsh vegetation loss for eight sites in Rhode Island and New York between ca.1970 and 2011 indicate that substantial loss has occurred over past decades, with higher loss rates found for lower elevation salt marshes. Using inundation experiments, field surveys, and LiDAR datasets, we developed an elevation-productivity relationship for Spartina alterniflora specific to the U.S. Northeast, and located current salt marsh orthometric heights on this curve. We estimate that 87 % of Northeastern salt marshes are located at elevations where growth is limited by inundation. By manipulating water column nutrients, precipitation, and elevation, we further found that altered precipitation regime was associated with significant reductions in biomass, and that nutrient enrichment adversely impacts organic matter accumulation and peat formation. These results provide evidence that Northeastern U.S. marshes are vulnerable to the effects of accelerated sea level rise, and that neither precipitation changes, nor cultural eutrophication, will contribute positively to long-term salt marsh survival. © 2014 Springer Science+Business Media Dordrecht (outside the USA). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/84851
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Atlantic Ecology Division, ORD-NHEERL, U.S. Environmental Protection Agency, 27 Tarzwell Dr., Narragansett, RI, 02882, United States; Department of Ecology and Evolutionary Biology, Brown University, Providence, RI, 02912, United States; Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, 48109, United States
Recommended Citation:
Watson E.B.,Oczkowski A.J.,Wigand C.,et al. Nutrient enrichment and precipitation changes do not enhance resiliency of salt marshes to sea level rise in the Northeastern U.S.[J]. Climatic Change,2014-01-01,125(2018-03-04)