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Astronomical and atmospheric impacts on deep-sea hydrothermal vent invertebrates ArchiMer
Lelievre, Yann; Legendre, Pierre; Matabos, Marjolaine; Mihaly, Steve; Lee, Raymond W.; Sarradin, Pierre-marie; Arango, Claudia P.; Sarrazin, Jozee.
Ocean tides and winter surface storms are among the main factors driving the dynamics and spatial structure of marine coastal species, but the understanding of their impact on deep-sea and hydrothermal vent communities is still limited. Multidisciplinary deep-sea observatories offer an essential tool to study behavioural rhythms and interactions between hydrothermal community dynamics and environmental fluctuations. Here, we investigated whether species associated with a Ridgeia piscesae tubeworm vent assemblage respond to local ocean dynamics. By tracking variations in vent macrofaunal abundance at different temporal scales, we provide the first evidence that tides and winter surface storms influence the distribution patterns of mobile and non-symbiotic...
Tipo: Text Palavras-chave: Deep-sea observatory; Hydrothermal vents; Macrofaunal abundance; Surface storms; Ocean tides; Time-series analysis.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00380/49122/49554.pdf
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Biodiversity and trophic ecology of hydrothermal vent fauna associated with tubeworm assemblages on the Juan de Fuca Ridge ArchiMer
Lelievre, Yann; Sarrazin, Jozee; Marticorena, Julien; Schaal, Gauthier; Day, Thomas; Legendre, Pierre; Hourdez, Stephane; Matabos, Marjolaine.
Hydrothermal vent sites along the Juan de Fuca Ridge in the north-east Pacific host dense populations of Ridgeia piscesae tubeworms that promote habitat heterogeneity and local diversity. A detailed description of the biodiversity and community structure is needed to help understand the ecological processes that underlie the distribution and dynamics of deep-sea vent communities. Here, we assessed the composition, abundance, diversity and trophic structure of six tubeworm samples, corresponding to different successional stages, collected on the Grotto hydrothermal edifice (Main Endeavour Field, Juan de Fuca Ridge) at 2196 m depth. Including R. piscesae, a total of 36 macrofaunal taxa were identified to the species level. Although polychaetes made up the...
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Ano: 2018 URL: https://archimer.ifremer.fr/doc/00439/55083/56515.pdf
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