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Constraints on the adjustment of tidal marshes to accelerating sea level rise
Science ( IF 56.9 ) Pub Date : 2022-07-28 , DOI: 10.1126/science.abo7872
Neil Saintilan 1 , Katya E Kovalenko 2 , Glenn Guntenspergen 3 , Kerrylee Rogers 4 , James C Lynch 5 , Donald R Cahoon 3 , Catherine E Lovelock 6 , Daniel A Friess 7 , Erica Ashe 8 , Ken W Krauss 9 , Nicole Cormier 1 , Tom Spencer 10 , Janine Adams 11 , Jacqueline Raw 11 , Carles Ibanez 12 , Francesco Scarton 13 , Stijn Temmerman 14 , Patrick Meire 15 , Tom Maris 15 , Karen Thorne 16 , John Brazner 15 , Gail L Chmura 17 , Tony Bowron 18 , Vishmie P Gamage 1 , Kimberly Cressman 19 , Charlie Endris 20 , Christina Marconi 21 , Pamela Marcum 22 , Kari St Laurent 23 , William Reay 24 , Kenneth B Raposa 25 , Jason A Garwood 26 , Nicole Khan 27
Affiliation  

Much uncertainty exists about the vulnerability of valuable tidal marsh ecosystems to relative sea level rise. Previous assessments of resilience to sea level rise, to which marshes can adjust by sediment accretion and elevation gain, revealed contrasting results, depending on contemporary or Holocene geological data. By analyzing globally distributed contemporary data, we found that marsh sediment accretion increases in parity with sea level rise, seemingly confirming previously claimed marsh resilience. However, subsidence of the substrate shows a nonlinear increase with accretion. As a result, marsh elevation gain is constrained in relation to sea level rise, and deficits emerge that are consistent with Holocene observations of tidal marsh vulnerability.

中文翻译:

调整潮汐沼泽加速海平面上升的制约因素

有价值的潮汐沼泽生态系统对相对海平面上升的脆弱性存在很多不确定性。先前对海平面上升恢复力的评估(沼泽可以通过沉积物的增加和海拔的增加进行调整)揭示了不同的结果,这取决于当代或全新世的地质数据。通过分析全球分布的当代数据,我们发现沼泽沉积物的增加与海平面上升的平价增加,似乎证实了之前声称的沼泽弹性。然而,基底的沉降显示出随着吸积的非线性增加。因此,与海平面上升相关的沼泽海拔增加受到限制,并且出现了与全新世潮汐沼泽脆弱性观察一致的缺陷。
更新日期:2022-07-28
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