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Authors Stanca, E; Parsons, ML
Author Full Name Stanca, Elena; Parsons, Michael L.
Title Examining the dynamic nature of epiphytic microalgae in the Florida Keys: What factors influence community composition?
Source JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
Language English
Document Type Article
Author Keywords Benthic microalgae; Florida Keys; Epiphytes; Seagrass; Macroalgae
Keywords Plus ARTIFICIAL AQUATIC PLANTS; THALASSIA-TESTUDINUM; SEAGRASS MEADOWS; SEASONAL-CHANGES; PHYTOPLANKTON; ASSEMBLAGES; NUTRIENT; ALGAE; BAY; DIATOMS
Abstract The factors that influence the composition of marine epiphytic microalgal assemblages are poorly-understood. To address this short-coming, 93 samples were collected from four distinct regions in the Florida Keys National Marine Sanctuary (FKNMS) during winter and summer months to test the model that epiphytic microalgal communities are influenced by environmental gradients related to different sites, seasons, and host macrophyte species. One hundred and eighty-three morphotypes from 13 classes (7 phyla) were identified, dominated by 106 Bacillariophyta (77 identified to species equivalent or below), 37 Cyanophyta (13 identified to species equivalent or below), and 30 Dinophyta (21 identified to species equivalent or below). The largest proportion of variability in epiphytic communities was related to physico-chemical parameters (37%), followed by site location (oceanversus bayside; 15%), seasonal differences (11%), and host macrophyte species (10%). Four physico-chemical variables were found to be most influential: wave height, temperature, ammonium concentration, and salinity. Only six out of 616 epiphyte - host comparisons exhibited significant differences in individual epiphyte taxon abundance between different host species (within site and season), further demonstrating that host-specificity was not strongly evident in this study. Overall, the results of this (sub)tropical study indicate that changing environmental characteristics between sites and seasons were the primary drivers influencing epiphyte community composition. Similar findings were found in an accompanying study of phytoplankton and other studies from temperate and (sub)polar regions, suggesting that common, underlying processes exist among these disparate environments.
Author Address [Stanca, Elena; Parsons, Michael L.] Florida Gulf Coast Univ, Coastal Watershed Inst, 10501 FGCU Blvd South, Ft Myers, FL 33965 USA; [Stanca, Elena] Univ Salento, Dept Biol & Environm Sci & Technol, Str Prov Lecce Monteroni, I-73100 Lecce, Italy
Reprint Address Parsons, ML (corresponding author), Florida Gulf Coast Univ, Coastal Watershed Inst, 10501 FGCU Blvd South, Ft Myers, FL 33965 USA.
E-mail Address mparsons@fgcu.edu
Funding Agency and Grant Number Accademia Nazionale dei Lincei (Rome); NOAA NOSNational Oceanic Atmospheric Admin (NOAA) - USA [NA11NOS478-0060, NA11NOS4780028]
Funding Text We would like to thank Ashley Brandt, Amanda Ellsworth, and Alex Leynse for their assistance in the field and laboratory (Florida Gulf Coast University). Special thanks are due to Professor Basset for his encouragement to apply for a biodiversity phytoplankton project, extending my phytoplankton knowledge abroad (E.S.). Funding was provided to E.S. by a post-doc fellowship
Publisher ELSEVIER
Publisher City AMSTERDAM
Publisher Address RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
ISSN 0022-0981
29-Character Source Abbreviation J EXP MAR BIOL ECOL
ISO Source Abbreviation J. Exp. Mar. Biol. Ecol.
Publication Date MAY
Year Published 2021
Volume 538
Article Number 151538
Digital Object Identifier (DOI) 10.1016/j.jembe.2021.151538
Page Count 9
Web of Science Category Ecology; Marine & Freshwater Biology
Subject Category Environmental Sciences & Ecology; Marine & Freshwater Biology
Document Delivery Number RO4FT
Unique Article Identifier WOS:000641001600007
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