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Authors Li, F; Pennings, SC
Author Full Name Li, Fan; Pennings, Steven C.
Title Responses of Tidal Freshwater and Brackish Marsh Macrophytes to Pulses of Saline Water Simulating Sea Level Rise and Reduced Discharge
Source WETLANDS
Language English
Document Type Article
Author Keywords Saline intrusion; Freshwater marsh; Brackish marsh; Zizaniopsis miliacea; Polygonum hydropiperoides; Pontederia cordata
Keywords Plus SALTWATER INTRUSION; OLIGOHALINE MARSH; FLUCTUATING SALINITY; ECOSYSTEM SERVICES; COASTAL MARSHES; PLANT COMMUNITY; VEGETATION; SEDIMENTS; DROUGHT; INUNDATION
Abstract Coastal low-salinity marshes are increasingly experiencing periodic to extended periods of elevated salinities due to the combined effects of sea level rise and altered hydrological and climatic conditions. However, we lack the ability to predict detailed vegetation responses, especially for saline pulses that are more realistic in nature than permanent saline presses. In this study, we exposed common freshwater and brackish plants to different durations (1-31days per month for 3months) of saline water (salinity of 5). We found that Zizaniopsis miliacea was more tolerant to salinity than the other two freshwater species, Polygonum hydropiperoides and Pontederia cordata. We also found that Zizaniopsis miliacea belowground and total biomass appeared to increase with salinity pulses up to 16days in length, although this relationship was quite variable. Brackish plants, Spartina cynosuroides, Schoenoplectus americanus and Juncus roemerianus, were unaffected by the experimental treatments. Our experiment did not evaluate how competitive interactions would further affect responses to salinity but our results suggest the hypothesis that short pulses of saline water will increase the cover of Zizaniopsis miliacea and decrease the cover of Polygonum hydropiperoides and Pontederia cordata in tidal freshwater marshes, thereby reducing diversity without necessarily affecting total plant biomass.
Author Address [Li, Fan; Pennings, Steven C.] Univ Houston, Dept Biol & Biochem, Houston, TX 77204 USA
Reprint Address Li, F (corresponding author), Univ Houston, Dept Biol & Biochem, Houston, TX 77204 USA.
E-mail Address lifan.uh@gmail.com
Funding Agency and Grant Number National Science Foundation through the Georgia Coastal Ecosystems Long-Term Ecological Research program [OCE-1237140]
Funding Text This material is based upon work supported by the National Science Foundation through the Georgia Coastal Ecosystems Long-Term Ecological Research program under Grant No. OCE-1237140. We thank Huy Vu, Wei-Ting Lin, Jacob Shalack, Caroline Reddy, Tim Montgomery, Zachary Chejanovski, Carolyn Kilgore and George Wheeler for help with this project. We thank Wade Sheldon for assistance with the salinity data. This is contribution number 1068 of the University of Georgia Marine Institute.
Times Cited 5
Total Times Cited Count (WoS, BCI, and CSCD) 5
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 OCT
Year Published 2018
Volume 38
Issue 5
Beginning Page 885
Ending Page 891
Digital Object Identifier (DOI) 10.1007/s13157-018-1037-2
Page Count 7
Web of Science Category Ecology; Environmental Sciences
Subject Category Environmental Sciences & Ecology
Document Delivery Number HA5JA
Unique Article Identifier WOS:000450305300003
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