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Marchessaux, Guillaume; Gadreaud, Justine; Martin-garin, Bertrand; Thiery, Alain; Ourgaud, Melanie; Belloni, Bruno; Thibault, Delphine. |
The hydromedusa Gonionemus vertens A. Agassiz, 1862 was first detected in the Berre Lagoon, south of France, in July 2016. Early June 2017, following an early rise in temperature, much higher numbers of specimens were reported leading to several beach goers being stung and one going into anaphylactic shock. Effort to rehabilitate this highly anthropogenically altered lagoon has led to the redevelopment of the Zostera meadows, which might be favoring the clinging jellyfish. Developmental aberrations of specimens were noted, which could be linked to the remaining presence of chemicals from the industrial development period. Impact of this predator species on the functioning of the lagoon ecosystem should also be studied. |
Tipo: Text |
Palavras-chave: Hydromedusae; Mediterranean lagoon; Occurrence; Invasive species; Human's health impacts. |
Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00422/53346/74874.pdf |
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Dupuy, Christine; Pagano, Marc; Got, Patrice; Domaizon, Isabelle; Chappuis, Alexis; Marchessaux, Guillaume; Bouvy, Marc. |
Coral reef and atoll lagoons are among the most diversified marine ecosystems but also the most affected by the combined effects of climate change and human activities. The Iles Eparses (Scattered Islands) in the Western Indian Ocean have been little affected by human pressure and can be considered to be “pristine” ecosystems. Metazooplankton plays a major role in the functioning and productivity of aquatic ecosystems, and this study was undertaken: (i) to determine the spatial abundance, distribution and species composition of metazooplankton, (ii) to assess the effect of metazooplankton grazing on pico- and nanophytoplankton and (iii) to analyze the trophic positions of metazooplankton by using the stable isotope signatures of a wide variety of taxa and... |
Tipo: Text |
Palavras-chave: Metazooplankton; Spatial distribution; Grazing effect; Feeding ecology; Iles Eparses; Mayotte. |
Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00317/42850/42259.pdf |
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