caa a22 4500 605509069 CHVBK 20210128100639.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s10452-014-9500-5 doi (NATIONALLICENCE)springer-10.1007/s10452-014-9500-5 Salinity gradient and nutrients as major structuring factors of the phytoplankton communities in salt marshes [Elektronische Daten] [Salma Masmoudi, Emmanuelle Tastard, Wassim Guermazi, Aurore Caruso, Annick Morant-Manceau, Habib Ayadi] This study investigated the major environmental factors structuring, for a year, phytoplankton assemblages in the Sfax saltern (Tunisia): salinity and nutrients. A STATICO analysis based on 11 environmental variables and the abundances of 64 phytoplanktonic species was conducted. STATICO is used to analyze the stable part of the relationships between the environment and species, and then to determine how these relationships change over time. The analysis confirmed that the salinity gradient had a considerable influence on the composition of the phytoplanktonic communities. Bacillariophyceae and Dinophyceae dominated in the least salty ponds, whereas Chlorophyceae and Cyanophyceae dominated in the saltiest ponds, in accordance with the halotolerance level estimated for each species by calculating the optimum salinity and salt tolerance. Nitrogen (N) and phosphorus (P) ions could have a secondary influence on the phytoplankton distribution and its dynamics. Dinophyceae seem to be favored by high ammonium (NH4 +) concentrations, whereas diatoms seem to be favored by high orthophosphates (PO4 3−) and nitrates (NO3 −) values. The Chlorophyceae Dunalliela salina thrived in the saltiest ponds when the NO3 − concentrations increased. Springer Science+Business Media Dordrecht, 2014 Ecological preference nationallicence Phytoplankton nationallicence Solar saltern nationallicence STATICO analysis nationallicence Masmoudi Salma Laboratory of Biodiversity and Aquatic Ecosystems, Ecology and Planktonology, Department of Life Sciences, Faculty of Sfax University, Street Soukra Km 3.5, BP 1171, 3000, Sfax, Tunisia aut Tastard Emmanuelle Laboratoire Mer, Molécules, Santé (EA 2160), LUNAM université, Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex 9, France aut Guermazi Wassim Laboratory of Biodiversity and Aquatic Ecosystems, Ecology and Planktonology, Department of Life Sciences, Faculty of Sfax University, Street Soukra Km 3.5, BP 1171, 3000, Sfax, Tunisia aut Caruso Aurore Laboratoire Mer, Molécules, Santé (EA 2160), LUNAM université, Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex 9, France aut Morant-Manceau Annick Laboratoire Mer, Molécules, Santé (EA 2160), LUNAM université, Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex 9, France aut Ayadi Habib Laboratory of Biodiversity and Aquatic Ecosystems, Ecology and Planktonology, Department of Life Sciences, Faculty of Sfax University, Street Soukra Km 3.5, BP 1171, 3000, Sfax, Tunisia aut Aquatic Ecology Springer Netherlands 49/1(2015-03-01), 1-19 1386-2588 49:1<1 2015 49 10452 https://doi.org/10.1007/s10452-014-9500-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10452-014-9500-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Masmoudi Salma Laboratory of Biodiversity and Aquatic Ecosystems, Ecology and Planktonology, Department of Life Sciences, Faculty of Sfax University, Street Soukra Km 3.5, BP 1171, 3000, Sfax, Tunisia aut NATIONALLICENCE 700 1- Tastard Emmanuelle Laboratoire Mer, Molécules, Santé (EA 2160), LUNAM université, Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex 9, France aut NATIONALLICENCE 700 1- Guermazi Wassim Laboratory of Biodiversity and Aquatic Ecosystems, Ecology and Planktonology, Department of Life Sciences, Faculty of Sfax University, Street Soukra Km 3.5, BP 1171, 3000, Sfax, Tunisia aut NATIONALLICENCE 700 1- Caruso Aurore Laboratoire Mer, Molécules, Santé (EA 2160), LUNAM université, Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex 9, France aut NATIONALLICENCE 700 1- Morant-Manceau Annick Laboratoire Mer, Molécules, Santé (EA 2160), LUNAM université, Université du Maine, Avenue Olivier Messiaen, 72085, Le Mans Cedex 9, France aut NATIONALLICENCE 700 1- Ayadi Habib Laboratory of Biodiversity and Aquatic Ecosystems, Ecology and Planktonology, Department of Life Sciences, Faculty of Sfax University, Street Soukra Km 3.5, BP 1171, 3000, Sfax, Tunisia aut NATIONALLICENCE 773 0- Aquatic Ecology Springer Netherlands 49/1(2015-03-01), 1-19 1386-2588 49:1<1 2015 49 10452