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Authors Jarrell, ER; Kolker, AS; Campbell, C; Blum, MJ
Author Full Name Jarrell, Elizabeth R.; Kolker, Alexander S.; Campbell, Cassandra; Blum, Michael J.
Title Brackish Marsh Plant Community Responses to Regional Precipitation and Relative sea-Level Rise
Source WETLANDS
Language English
Document Type Article
Author Keywords Climate change; Coastal wetlands; Schoenoplectus americanus; Cladium jamaicense; Accretion rate
Keywords Plus NORTH-CAROLINA; SALT-MARSH; NEW-ENGLAND; VEGETATION CHANGE; CHESAPEAKE BAY; CLIMATE-CHANGE; HUMAN IMPACTS; TIDAL MARSH; COASTAL; SALINITY
Abstract Climate-driven shifts in environmental conditions can transform the structure and function of coastal ecosystems. Here we examine how two back-barrier brackish marshes in Pamlico Sound (North Carolina, USA) responded to changes in precipitation, temperature, and relative sea level and whether local rates of accretion have kept pace with relative sea-level rise. We used the distribution of seeds in sediment cores, coupled with Pb-210-sediment geochronology, to determine patterns of community and ecosystem change over the past century. The chronologies demonstrate that both marshes recently transitioned from communities dominated by Cladium jamaicense, which prefers fresh and brackish settings, to communities dominated by Schoenoplectus americanus, which prefers brackish and saline environments. Multiple regression analysis indicates that community shifts are best explained by relative sea-level rise and regional trends in precipitation. Results also indicate that the marshes are developing an elevation deficit with respect to rising sea level, which likely influenced the conversion from C. jamaicense dominated to S. americanus dominated communities. These findings substantiate a growing body of evidence indicating that climate-driven shifts in environmental conditions are transforming coastal ecosystems and suggest that brackish intertidal marshes may become increasingly threatened by accelerated sea-level rise and associated environmental changes expected to unfold this century.
Author Address [Jarrell, Elizabeth R.; Campbell, Cassandra; Blum, Michael J.] Tulane Univ, Dept Ecol & Evolutionary Biol, New Orleans, LA 70118 USA; [Kolker, Alexander S.] Louisiana Univ Marine Consortium, 8124 Highway 56, Chauvin, LA 70344 USA; [Kolker, Alexander S.] Tulane Univ, Dept Earth & Environm Sci, New Orleans, LA 70118 USA
Reprint Address Kolker, AS (corresponding author), Louisiana Univ Marine Consortium, 8124 Highway 56, Chauvin, LA 70344 USA.; Kolker, AS (corresponding author), Tulane Univ, Dept Earth & Environm Sci, New Orleans, LA 70118 USA.
E-mail Address akolker@lumcon.edu
ResearcherID Number wang, baylor09/C-5190-2009
ORCID Number Campbell, Cassandra/0000-0003-2909-5472
Funding Agency and Grant Number Newcomb College Institute at Tulane University; Tulane University; LUMCON
Funding Text We would like to thank Jeremiah Jackson, Dani Zhao, and Sabrina Hunter for assistance with seed recovery from soil cores. In addition, Brittany Bernik and Rachel Hesselink provided valuable advice in early stages of planning and data collection. Dr. Colin Saunders and the staff of the Tulane Herbarium aided in preliminary identification of seeds. Cyndhia Ramatchandirane helped with use of equipment for creating geochronologies. Funding for this work was provided by support to C. Campbell from the Newcomb College Institute at Tulane University. Additional support was made available to MJ Blum and AS Kolker from Tulane University and LUMCON. Feedback from multiple anonymous reviewers also greatly contributed to the quality of this paper.
Times Cited 7
Total Times Cited Count (WoS, BCI, and CSCD) 7
Publisher SPRINGER
Publisher City DORDRECHT
Publisher Address VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN 0277-5212
29-Character Source Abbreviation WETLANDS
ISO Source Abbreviation Wetlands
Publication Date AUG
Year Published 2016
Volume 36
Issue 4
Beginning Page 607
Ending Page 619
Digital Object Identifier (DOI) 10.1007/s13157-016-0769-0
Page Count 13
Web of Science Category Ecology; Environmental Sciences
Subject Category Environmental Sciences & Ecology
Document Delivery Number DR7GC
Unique Article Identifier WOS:000380067000002
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