2018
DOI: 10.1071/mf17133
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Water quality affects the structure of copepod assemblages along the Sfax southern coast (Tunisia, southern Mediterranean Sea)

Abstract: The Sfax southern coast (Gulf of Gabes, Mediterranean Sea) has been under increased anthropogenic pressure for many years. In the present study we investigated the effects of this anthropisation on the spatial distribution of copepod assemblages in relation to the physicochemical features of seawater at 20 stations sampled on 19 March 2013. Copepods represented 73% of total zooplankton abundance. Small planktonic copepods (<1.45mm), including pollution-tolerant species (e.g. Oithona nana, Paracalanus parvus… Show more

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Cited by 13 publications
(8 citation statements)
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References 50 publications
(69 reference statements)
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“…The zooplankton abundance was primarily characterized by the predominance of copepods in all the stations in the Western Area of the Djerba coasts. The dominance of copepods has already been reported in several studies in the Gulf of Gabes region: on the southern coast of Sfax (66 -82% of the total zooplankton; Ben Salem et al, 2015;Drira et al, 2018a;Drira et al, 2018b); on the northern coast of Sfax (61-82%; Rekik et al, 2011Rekik et al, , 2013Drira et al, 2018a); in Ghannouch and Zarrat (46 -83%; Baccar, 2014;Drira et al, 2018a); in offshore waters of the Gulf of Gabes (83%; Drira et al, 2014;Ben Ltaief et al, 2015); along the southern coast of Kerkennah Islands in summer (98%; Rekik et al, 2018a), in Kneiss Islands in summer (30-96%; Rekik et al, 2018b) and in Boughrara lagoon (62%-92%; Makhlouf-Belkahia et al, 2020). Among copepods, Calanoids were highly dominant (up to 79% of copepod abundance), which is very similar to what was observed by Drira et al (2018a) on the coast at Ghannouch (51% of total copepod abundance) and on the Sfax coast (43% of total copepod abundance).The high dominance of Paracalanus parvus in the Djerba copepod community in summer also corresponds to what was reported in Kneiss islands, Tunisia (Rekik et al, 2018b), in Kerkennah islands, Tunisia (Rekik et al, 2018a) and in Boughrara lagoon, Tunisia (Makhlouf-Belkahia et al, 2020).…”
Section: Discussionmentioning
confidence: 54%
“…The zooplankton abundance was primarily characterized by the predominance of copepods in all the stations in the Western Area of the Djerba coasts. The dominance of copepods has already been reported in several studies in the Gulf of Gabes region: on the southern coast of Sfax (66 -82% of the total zooplankton; Ben Salem et al, 2015;Drira et al, 2018a;Drira et al, 2018b); on the northern coast of Sfax (61-82%; Rekik et al, 2011Rekik et al, , 2013Drira et al, 2018a); in Ghannouch and Zarrat (46 -83%; Baccar, 2014;Drira et al, 2018a); in offshore waters of the Gulf of Gabes (83%; Drira et al, 2014;Ben Ltaief et al, 2015); along the southern coast of Kerkennah Islands in summer (98%; Rekik et al, 2018a), in Kneiss Islands in summer (30-96%; Rekik et al, 2018b) and in Boughrara lagoon (62%-92%; Makhlouf-Belkahia et al, 2020). Among copepods, Calanoids were highly dominant (up to 79% of copepod abundance), which is very similar to what was observed by Drira et al (2018a) on the coast at Ghannouch (51% of total copepod abundance) and on the Sfax coast (43% of total copepod abundance).The high dominance of Paracalanus parvus in the Djerba copepod community in summer also corresponds to what was reported in Kneiss islands, Tunisia (Rekik et al, 2018b), in Kerkennah islands, Tunisia (Rekik et al, 2018a) and in Boughrara lagoon, Tunisia (Makhlouf-Belkahia et al, 2020).…”
Section: Discussionmentioning
confidence: 54%
“…Given limited tolerances to pollution in wholly aquatic invertebrates (e.g. copepods), this suggests an important predatory role of notonectids in suppressesing mosquito populations within patchy aquatic habitats at the landscape scale. Our results enhance understanding of environmental factors which alter the predatory effects of these important natural enemies of mosquitoes, and indicate interspecific differences within taxonomic groups.…”
Section: Discussionmentioning
confidence: 99%
“…In the marine environment, zooplankter is exposed to and sensitive to physical, chemical, and biological factors [ 1 , 2 , 3 , 4 ]. Their population dynamics were shown to respond closely to seasonal temperature variations [ 5 , 6 , 7 ].…”
Section: Introductionmentioning
confidence: 99%