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| Michelet, Claire; Zeppilli, Daniela; Hubas, Cédric; Baldrighi, Elisa; Cuny, Philippe; Dirberg, Guillaume; Militon, Cécile; Walcker, Romain; Lamy, Dominique; Jézéquel, Ronan; Receveur, Justine; Gilbert, Franck; Houssainy, Amonda El; Dufour, Aurélie; Heimbürger-boavida, Lars-eric; Bihannic, Isabelle; Sylvi, Léa; Vivier, Baptiste; Michaud, Emma. |
| Bioindicators assess the mangroves ecological state according to the types of pressures but they differ with the ecosystem’s specificities. We investigated benthic meiofauna diversity and structure within the low human-impacted mangroves in French Guiana (South America) in response to sediment variables with various distances to the main city. Contaminant’s concentrations differed among the stations, but they remained below toxicity guidelines. Meiofauna structure (Foraminifera, Kinorhyncha, Nematoda) however varied accordingly. Nematode’s identification brought details on the sediment’s quality. The opportunistic genus Paraethmolaimus (Jensen, 1994) strongly correlated to the higher concentrations of Hg, Pb. Anoxic sediments were marked by organic... |
| Tipo: Text |
Palavras-chave: Mangroves; Biodiversity; Meiofauna; Nematode; Anthropogenic pressures; Natural contamination; South America. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00684/79587/82274.pdf |
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| Charette, Matthew A.; Kipp, Lauren E.; Jensen, Laramie T.; Dabrowski, Jessica S.; Whitmore, Laura M.; Fitzsimmons, Jessica N.; Williford, Tatiana; Ulfsbo, Adam; Jones, Elizabeth; Bundy, Randelle M.; Vivancos, Sebastian M.; Pahnke, Katharina; John, Seth G.; Xiang, Yang; Hatta, Mariko; Petrova, Mariia V.; Heimbürger-boavida, Lars-eric; Bauch, Dorothea; Newton, Robert; Pasqualini, Angelica; Agather, Alison M.; Amon, Rainer M.w.; Anderson, Robert F.; Andersson, Per S.; Benner, Ronald; Bowman, Katlin L.; Edwards, R. Lawrence; Gdaniec, Sandra; Gerringa, Loes J.a.; González, Aridane G.; Granskog, Mats; Haley, Brian; Hammerschmidt, Chad R.; Hansell, Dennis A.; Henderson, Paul B.; Kadko, David C.; Kaiser, Karl; Laan, Patrick; Lam, Phoebe J.; Lamborg, Carl H.; Levier, Martin; Li, Xianglei; Margolin, Andrew R.; Measures, Chris; Middag, Rob; Millero, Frank J.; Moore, Willard S.; Paffrath, Ronja; Planquette, Helene; Rabe, Benjamin; Reader, Heather; Rember, Robert; Rijkenberg, Micha J.a.; Roy-barman, Matthieu; Rutgers Van Der Loeff, Michiel; Saito, Mak; Schauer, Ursula; Schlosser, Peter; Sherrell, Robert M.; Shiller, Alan M.; Slagter, Hans; Sonke, Jeroen E.; Stedmon, Colin; Woosley, Ryan J.; Valk, Ole; Van Ooijen, Jan; Zhang, Ruifeng. |
| A major surface circulation feature of the Arctic Ocean is the Transpolar Drift (TPD), a current that transports river‐influenced shelf water from the Laptev and East Siberian Seas toward the center of the basin and Fram Strait. In 2015, the international GEOTRACES program included a high‐resolution pan‐Arctic survey of carbon, nutrients, and a suite of trace elements and isotopes (TEIs). The cruises bisected the TPD at two locations in the central basin, which were defined by maxima in meteoric water and dissolved organic carbon concentrations that spanned 600 km horizontally and ~25‐50 m vertically. Dissolved TEIs such as Fe, Co, Ni, Cu, Hg, Nd, and Th, which are generally particle‐reactive but can be complexed by organic matter, were observed at... |
| Tipo: Text |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00620/73223/72435.pdf |
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