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DOI | 10.1016/j.ecss.2018.11.003 |
Salt marsh ecosystem restructuring enhances elevation resilience and carbon storage during accelerating relative sea-level rise | |
Gonneea, Meagan Eagle1; Maio, Christopher V.2; Kroeger, Kevin D.1; Hawkes, Andrea D.3; Mora, Jordan4; Sullivan, Richard5,7; Madsen, Stephanie5; Buzard, Richard M.2; Cahill, Niamh6; Donnelly, Jeffrey P.5 | |
发表日期 | 2019 |
ISSN | 0272-7714 |
EISSN | 1096-0015 |
卷号 | 217页码:56-68 |
英文摘要 | Salt marshes respond to sea-level rise through a series of complex and dynamic bio-physical feedbacks. In this study, we found that sea-level rise triggered salt marsh habitat restructuring, with the associated vegetation changes enhancing salt marsh elevation resilience. A continuous record of marsh elevation relative to sea level that includes reconstruction of high-resolution, sub-decadal, marsh elevation over the past century, coupled with a lower-resolution 1500-year record, revealed that relative sea-level rose 1.5 +/- 0.4 m, following local glacial isostatic adjustment (1.2 mm/yr). As sea-level rise has rapidly accelerated, the high marsh zone dropped 11 cm within the tidal frame since 1932, leading to greater inundation and a shift to flood- and salt-tolerant low marsh species. Once the marsh platform fell to the elevation favored by low-marsh Spartina alterniflara, the elevation stabilized relative to sea level. Currently low marsh accretion keeps pace with sea-level rise, while present day high marsh zones that have not transitioned to low marsh have a vertical accretion deficit. Greater biomass productivity, and an expanding subsurface accommodation space favorable for salt marsh organic matter preservation, provide a positive feed-back between sea-level rise and marsh platform elevation. Carbon storage was 46 +/- 28 g C/m(2)/yr from 550 to 1800 CE, increasing to 129 +/- 50 g C/m(2)/yr in the last decade. Enhanced carbon storage is controlled by vertical accretion rates, rather than soil carbon density, and is a direct response to anthropogenic eustatic sea-level rise, ultimately providing a negative feedback on climate warming. |
WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
来源期刊 | ESTUARINE COASTAL AND SHELF SCIENCE
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/93282 |
作者单位 | 1.US Geol Survey, Woods Hole Coastal & Marine Sci Ctr, 384 Woods Hole Rd, Woods Hole, MA 02543 USA; 2.Univ Alaska, Dept Geosci, POB 755780, Fairbanks, AK 99775 USA; 3.Univ N Carolina, Earth & Ocean Sci Dept, 601 South Coll Rd, Wilmington, NC 28403 USA; 4.Waquoit Bay Natl Estuarine Res Reserve, 131 Waquoit Highway, Waquoit, MA 02536 USA; 5.Woods Hole Oceanog Inst, Coastal Syst Grp, 266 Woods Hole Rd,Mail Stop 22, Woods Hole, MA 02543 USA; 6.Univ Coll Dublin, Sch Math & Stat, Dublin 4, Ireland; 7.Texas A&M Univ, Dept Oceanog, 400 Bizzell St, College Stn, TX 77843 USA |
推荐引用方式 GB/T 7714 | Gonneea, Meagan Eagle,Maio, Christopher V.,Kroeger, Kevin D.,et al. Salt marsh ecosystem restructuring enhances elevation resilience and carbon storage during accelerating relative sea-level rise[J],2019,217:56-68. |
APA | Gonneea, Meagan Eagle.,Maio, Christopher V..,Kroeger, Kevin D..,Hawkes, Andrea D..,Mora, Jordan.,...&Donnelly, Jeffrey P..(2019).Salt marsh ecosystem restructuring enhances elevation resilience and carbon storage during accelerating relative sea-level rise.ESTUARINE COASTAL AND SHELF SCIENCE,217,56-68. |
MLA | Gonneea, Meagan Eagle,et al."Salt marsh ecosystem restructuring enhances elevation resilience and carbon storage during accelerating relative sea-level rise".ESTUARINE COASTAL AND SHELF SCIENCE 217(2019):56-68. |
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