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Coastal inundation regime moderates the short-term effects of sediment and soil additions on seawater oxygen and greenhouse gas dynamics: a microcosm experiment

Authors :
Peter Regier
Nicholas D. Ward
Alex Izquierdo
Andrew H. Baldwin
Donnie Day
Julia McElhinny
Kaizad Patel
Rodrigo Vargas
Jianqiu Zheng
Exchange Consortium
Allison Myers-Pigg
Silver Alford
Michael P. Back
Vanessa Bailey
Jade Bolinger
Madison Bowe
Maxim I. Boyanov
Jacob A. Cianci-Gaskill
Nathan A. Conroy
Matthew J. Cooper
Alex Demeo
Kyle Derby
Derek Detweiler
Suzanne Devres-Zimmerman
Erin Eberhard
Keryn Gedan
LeeAnn Haaf
Khadijah K. Homolka
Erin Johnson
Kenneth M. Kemner
Aliya Khan
Matthew Kirwan
Payton Kittaka
Erika Koontz
Adam Langley
Riley Leff
Scott Lerberg
Allison M. Lewis
Sairah Malkin
Amy M. Marcarelli
Steven E. McMurray
Tyler Messerschmidt
Taylor C. Michael
Holly A. Michael
Elizabeth C. Minor
Brian Moye
Thomas J. Mozdzer
Allison N. Myers-Pigg
Neubauer Scott
Cooper G. Norris
Edward J. O'Loughlin
Opal Otenburg
Andrea Pain
Kaizad F. Patel
Stephanie C. Pennington
Michael Philben
Evan Phillips
Dannielle Pratt
J. Alan Roebuck Jr.
Lauren Sage
Daniel Sandborn
Stacy Smith
Alex Smith
Samina Soin-Voshell
Bongkeun Song
Amanda Sprague-Getsy
Kari St Laurent
Lorie Staver
Alice Stearns
Lucie Stetten
Rebecca Swerida
Ethan J. Theuerkauf
Katherine Tully
Elizabeth Watson
Coreen Weilminster
Source :
Frontiers in Marine Science, Vol 10 (2023)
Publication Year :
2023
Publisher :
Frontiers Media S.A., 2023.

Abstract

The frequency and persistence of tidal inundation varies along the coastal terrestrial-aquatic interface, from frequently inundated wetlands to rarely inundated upland forests. This inundation gradient controls soil and sediment biogeochemistry and influence the exchange of soils and sediments from terrestrial to aquatic domains. Although a rich literature exist on studies of the influence of tidal waters on the biogeochemistry of coastal ecosystem soils, few studies have experimentally addressed the reverse question: How do soils (or sediments) from different coastal ecosystems influence the biogeochemistry of the tidal waters that inundate them? To better understand initial responses of coastal waters that flood coastal wetlands and uplands, we conducted short-term laboratory experiments where seawater was amended with sediments and soils collected across regional gradients of inundation exposure (i.e., frequently to rarely inundated) for 14 sites across the Mid-Atlantic, USA. Measured changes in dissolved oxygen and greenhouse gas concentrations were used to calculate gas consumption or production rates occurring during seawater exposure to terrestrial materials. We also measured soil and water physical and chemical properties to explore potential drivers. We observed higher oxygen consumption rates for seawater incubated with soils/sediments from frequently inundated locations and higher carbon dioxide production for seawater incubated with soils from rarely inundated transect locations. Incubations with soil from rarely inundated sites produced the highest global warming potential, primarily driven by carbon dioxide and secondarily by nitrous oxide. We also found environmental drivers of gas rates varied notably between transect locations. Our findings indicate that seawater responses to soil and sediment inputs across coastal terrestrial-aquatic interfaces exhibit some consistent patterns and high intra- and inter-site variability, suggesting potential biogeochemical feedback loops as inundation regimes shift inland.

Details

Language :
English
ISSN :
22967745
Volume :
10
Database :
Directory of Open Access Journals
Journal :
Frontiers in Marine Science
Publication Type :
Academic Journal
Accession number :
edsdoj.3fd8a453c5744d5e84371c522a377b8e
Document Type :
article
Full Text :
https://doi.org/10.3389/fmars.2023.1308590