Coastal Wetland Resilience, Accelerated Sea-Level Rise, and the Importance of Timescale

TitleCoastal Wetland Resilience, Accelerated Sea-Level Rise, and the Importance of Timescale
Publication TypeJournal Article
Year of Publication2021
AuthorsTörnqvist TE, Cahoon DR, Morris JT, Day JW
JournalAGU Advances
Volume2
Paginatione2020AV000334
ISSN2576-604X
Keywordscoastal wetlands; sea-level rise
Abstract

Recent studies have produced conflicting results as to whether coastal wetlands can keep up with present-day and future sea-level rise. The stratigraphic record shows that threshold rates for coastal wetland submergence or retreat are lower than what instrumental records suggest, with wetland extent that shrinks considerably under high rates of sea-level rise. These apparent conflicts can be reconciled by recognizing that many coastal wetlands still possess sufficient elevation capital to cope with sea-level rise, and that processes like sediment compaction, ponding, and wave erosion require multidecadal or longer timescales to drive wetland loss that is in many cases inevitable.

URLhttps://onlinelibrary.wiley.com/doi/abs/10.1029/2020AV000334
DOI10.1029/2020AV000334
Citation Keytornqvist_coastal_2021