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Authors Janousek, CN; Dugger, BD; Drucker, BM; Thorne, KM
Author Full Name Janousek, Christopher N.; Dugger, Bruce D.; Drucker, Brandon M.; Thorne, Karen M.
Title Salinity and inundation effects on productivity of brackish tidal marsh plants in the San Francisco Bay-Delta Estuary
Source HYDROBIOLOGIA
Language English
Document Type Article
Author Keywords Biomass; Climate change; Plant growth; Sea-level rise; Suisun Bay
Keywords Plus SEA-LEVEL RISE; SALT-MARSH; SPARTINA-ALTERNIFLORA; COASTAL WETLANDS; ELEVATED CO2; RESPONSES; GROWTH; ACCRETION; IMPACTS; STRESS
Abstract Plant productivity is central to numerous ecosystem functions in tidal wetlands. We examined how productivity of brackish marsh plants in northern California responded to abiotic stress gradients of inundation and salinity using two experimental approaches. In a greenhouse study with varying salinity, shoot production and biomass of Juncus balticus, Schoenoplectus acutus and S. americanus all declined monotonically with higher salinity, with evidence of differences in sensitivity among species by their varied functional responses. Salinity also negatively affected fecundity for the one species (S. americanus) that produced enough inflorescences during the experiment for analysis. In a field manipulation of inundation and initial pore water salinity, total end-of-season biomass and other metrics of growth in the high marsh species, J. balticus, had unimodal relationships with inundation. Root production tended to be greater strongly impacted by greater inundation than shoot production. The salinity treatment quickly dissipated for treatments that were flooded more frequently but persisted at a higher marsh elevation where it suppressed plant growth. These results suggest that both increased flooding and salinity associated with climate change and sea-level rise may negatively impact productivity of brackish marsh species, but with variable effects by species and stressor.
Author Address [Janousek, Christopher N.; Dugger, Bruce D.; Drucker, Brandon M.] Oregon State Univ, Dept Fisheries & Wildlife, 104 Nash Hall, Corvallis, OR 97331 USA; [Thorne, Karen M.] US Geol Survey, Western Ecol Res Ctr, One Shields Ave, Davis, CA 95616 USA
Reprint Address Janousek, CN (corresponding author), Oregon State Univ, Dept Fisheries & Wildlife, 104 Nash Hall, Corvallis, OR 97331 USA.
E-mail Address janousec@oregonstate.edu
ORCID Number Janousek, Christopher/0000-0003-2124-6715
Funding Agency and Grant Number National Oceanic and Atmospheric Administration (EESLR) [NA15NOS4780171]; Priority Ecosystems Science program of the U.S. Geological Survey
Funding Text This research was funded by the National Oceanic and Atmospheric Administration (EESLR cooperative agreement NA15NOS4780171) and the Priority Ecosystems Science program of the U.S. Geological Survey. We thank Veronica Corbett, Karen Backe, Mike Vasey, Ari Goodman, Mason Hill, Dave Nelson, Charlie Nelson, Sonya Kaufman, and Kevin Buffington for project assistance. We also thank two anonymous reviewers and Dylan Chapple for comments that helped improve the paper. Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Publisher SPRINGER
Publisher City DORDRECHT
Publisher Address VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN 0018-8158
29-Character Source Abbreviation HYDROBIOLOGIA
ISO Source Abbreviation Hydrobiologia
Publication Date NOV
Year Published 2020
Volume 847
Issue 20
Special Issue SI
Beginning Page 4311
Ending Page 4323
Digital Object Identifier (DOI) 10.1007/s10750-020-04419-3
Page Count 13
Web of Science Category Marine & Freshwater Biology
Subject Category Marine & Freshwater Biology
Document Delivery Number OQ9BN
Unique Article Identifier WOS:000585092700002
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