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Authors Hunter, A; Morris, NMB; Lafabrie, C; Cebrian, J
Author Full Name Hunter, Amy; Morris, Nicole M. B.; Lafabrie, Celine; Cebrian, Just
Title Effects of nutrient enrichment on Distichlis spicata and Salicornia bigelovii in a marsh salt pan
Source WETLANDS
Language English
Document Type Article
Author Keywords competition; eutrophication; Gulf of Mexico; nutrient storage
Keywords Plus PLANT ZONATION; FRINGING MARSH; NITROGEN; COMPETITION; VEGETATION; GROWTH; POPULATION; VIRGINICA; PATTERNS; ATLANTIC
Abstract We investigated how nutrient addition affects the abundance, nutrient storage, and competition between Distichlis spicato and Salicornia bigelovii, two dominant species in salt pans of Northern Gulf of Mexico marshes. Namely, we compared fertilized and unfertilized plots in monospecific areas colonized respectively by D. spicata or S. bigelovii, and in a mixed area colonized by the two species. Nutrient addition generally increased the aboveground biomass and percent cover of the two species, and those increases were moderate to large in relation to the increases found for other marsh plant species. Nutrient addition also generally decreased the carbon:nitrogen and carbonphosphorus ratios of aboveground and belowground tissues of the two species. Our results provide evidence that, under enhanced nutrient availability, D. spicata is a superior competitor over S. bigelovii in the mixed zone of the salt pan where the two species grow together. However, we did not detect large changes in biomass dominance by D. spicata following fertilization, possibly because the experiment only lasted 10 months. Our results suggest that nutrient addition, by increasing the structural complexity of the leaf canopy and the nutritional quality of plant tissues for first-order consumers, may enhance the value of salt pans as habitat for organisms.
Author Address [Hunter, Amy] Univ Alabama, Dept Biol Sci, Tuscaloosa, AL 35481 USA; [Lafabrie, Celine; Cebrian, Just] Univ S Alabama, Dept Marine Sci, Mobile, AL 36688 USA; [Hunter, Amy; Morris, Nicole M. B.; Lafabrie, Celine; Cebrian, Just] Dauphin Isl Sea Lab, Dauphin Isl, AL 36528 USA
Reprint Address Hunter, A (corresponding author), Toxicol & Environm Associates Inc, 775 N Univ Blvd,Suite 260, Mobile, AL 36608 USA.
E-mail Address jcebrian@disl.org
ResearcherID Number Lafabrie, Celine/B-3140-2012
Funding Agency and Grant Number Alabama Center for Estuarine Studies (ACES) [5-21854]; University of Alabama Alumni Association Fellowship in Aquatic Biology; Mississippi-Alabama Sea; National Science Foundation Research Experience for Undergraduates (REU)National Science Foundation (NSF)
Funding Text We thank Alina Corcoran, Mairi Miller, Ryan Moody, Dustin Addis, David Patterson, and Savannah Williams for assistance with field work, Laura Linn for help with nutrient analysis, Ron Klene for the use of his spectrophotometer, and Kate Sheehan for assistance with figure preparation. Alina Corcoran, Laura Gough, Julie Olson, Mark Hester, Darold Batzer, and two anonymous reviewers provided valuable comments on this manuscript. This research was funded by the Alabama Center for Estuarine Studies (ACES) grant # 5-21854. A. Hunter acknowledges funding from a University of Alabama Alumni Association Fellowship in Aquatic Biology and a Mississippi-Alabama Sea Grant student fellowship. N. Morris acknowledges funding from the National Science Foundation Research Experience for Undergraduates (REU).
Times Cited 12
Total Times Cited Count (WoS, BCI, and CSCD) 12
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 SEP
Year Published 2008
Volume 28
Issue 3
Beginning Page 760
Ending Page 775
Digital Object Identifier (DOI) 10.1672/06-149.1
Page Count 16
Web of Science Category Ecology; Environmental Sciences
Subject Category Environmental Sciences & Ecology
Document Delivery Number 341JX
Unique Article Identifier WOS:000258711600021
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