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Zeppilli, D.; Danovaro, R. (2009). Meiofaunal diversity and assemblage structure in a shallow-water hydrothermal vent in the Pacific Ocean. Aquatic Biology. 5: 75-84.
181715
10.3354/ab00140 [view]
Zeppilli, D.; Danovaro, R.
2009
Meiofaunal diversity and assemblage structure in a shallow-water hydrothermal vent in the Pacific Ocean
Aquatic Biology
5: 75-84
Publication
NeMys doc_id: 18000
Available for editors  PDF available
Despite their ubiquitous distribution in tectonically active coastal zones, shallow-water vents have been much less explored than deep-sea vents in terms of biodiversity and adaptations to extreme conditions. We investigated the meiofaunal biodiversity and environmental variables at distances of 10, 100 and 200 cm from a shallow-water hydrothermal vent in the equatorial Pacific (Sulawesi, Indonesia). Meiofaunal abundance and the richness of higher taxa increased from the site of fluid-vent emission (where temperatures of the fluids and sediments reached approximately 90°C) to the control sediments (200 cm from the vent, with no sign of effects from the vent fluids). Nematode species richness was also high in the intermediate station, where bottom sediment temperature reached 55°C. These data suggest that some nematode species were able to survive in conditions typically hostile to metazoan life. Gas emissions also influenced the biochemical composition of the sediment organic matter in proximity to the vent and favoured the growth of a large photo- and/or chemo-autotrophic prokaryotic biomass. This biomass represented a potentially important food source for predator/omnivore nematodes and influenced the trophic structure of benthic assemblages. Since the metazoan species found in proximity to the vent were a subset of those inhabiting control sediments, but were characterised by lower abundances, it might be hypothesized that the populations close to the vent are the result of colonization from adjacent areas.
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Acantholaimus Allgén, 1933 (additional source)
Actinonema Cobb, 1920 (additional source)
Daptonema Cobb, 1920 (additional source)
Desmodora de Man, 1889 (additional source)
Dichromadora Kreis, 1929 (additional source)
Leptolaimus de Man, 1876 (additional source)
Metadesmolaimus Schuurmans Stekhoven, 1935 (additional source)
Metalinhomoeus de Man, 1907 (additional source)
Molgolaimus Ditlevsen, 1921 (additional source)
Monhystera Bastian, 1865 (additional source)
Oncholaimus Dujardin, 1845 (additional source)
Paracanthonchus Micoletzky, 1924 (additional source)
Paracyatholaimus Micoletzky, 1922 (additional source)
Pomponema Cobb, 1917 (additional source)
Praeacanthonchus Micoletzky, 1924 (additional source)
Prochromadorella Micoletzky, 1924 (additional source)
Terschellingia de Man, 1888 (additional source)
Thalassomonhystera Jacobs, 1987 (additional source)
Theristus Bastian, 1865 (additional source)
Viscosia glabra (Bastian, 1865) de Man, 1890 (additional source)
Wieseria Gerlach, 1956 (additional source)