Assessment of flagellate diversity at deep-sea hydrothermal vents using the combined approach of culture-dependent and culture-independent methods

Atkins, Michael S.

doi:10.1575/1912/4013

Cited by 1 publication

(4 citation statements)

References 73 publications

(95 reference statements)

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“…Previous studies suggest that the vents have an effect and contribute to increased carbon production (Atkins 2000;Wakeham et al 2001;Hügler and Sievert 2011;Bennet et al 2013). However, the effect of ventspecific biodiversity has remained largely unexplored.…”

Section: Discussionmentioning

confidence: 99%

“…Although eukaryotic micro-organisms in Nordic Seas plumes have not been studied before, several other studies have focused on the effect of hydrothermal plumes from other parts of the world on both the mesozooplankton (Berg and Van Dover 1987;Burd and Thomson 1995;Burd et al 2002;Vinogradov and Vereshchaka 2005;Olsen et al 2013) and the microplankton (Atkins 2000;López-García et al 2007;Bennet et al 2013). While hydrothermal vents clearly contribute to increasing the available metabolic energy, how this increased energy affects the biodiversity remains unclear.…”

Section: Ecological Assessmentmentioning

confidence: 99%

“…While hydrothermal vents clearly contribute to increasing the available metabolic energy, how this increased energy affects the biodiversity remains unclear. Atkins (2000) suggested that flagellate protozoans could maintain metabolism within the extreme conditions of hydrothermal vents with high concentrations of, e.g., sulphide in the water column. This conclusion is strengthened by the high protistan diversity described in López-García et al (2007).…”

Section: Ecological Assessmentmentioning

confidence: 99%

“…The depth could impact the surrounding ecosystem due to variable vertical transport of organic matter from surface production while differential pressure could influence taxa directly, making these three sites fundamentally different as habitats. Indeed, pressure could influence organisms significantly and many taxa cannot maintain their metabolism at the lower Loki's Castle depths (Atkins 2000).…”

Section: Introductionmentioning

confidence: 99%

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The influence of vent systems on pelagic eukaryotic micro-organism composition in the Nordic Seas

et al. 2014

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Deep-sea hydrothermal vents and cold seeps are biological hot spots with chemolithotrophic bacterial production sustaining both benthic and pelagic organisms. Although efforts have been made to understand the diversity and function of the bacterial composition of these systems, first-level consumers, pelagic single cell heterotrophic organisms, which represent an important link between bacterial production and higher trophic levels, remain un-described in hydrothermal vents and seeps of the Nordic Seas. Here, we used a molecular biodiversity assay to investigate the impact of water masses and hydrothermal vents on the eukaryotic micro-organisms surrounding two vents systems, Jan Mayen Vent Field and Loki's Castle, and one cold seep, Håkon Mosby Mud Volcano. The assay generated a total of 482 operational taxonomic units (OTUs) based on a 99 % cut-off value, and the OTUs were grouped according to taxonomic rank. Data analysis using hierarchical clustering and non-metric multidimensional scaling with class as taxonomic entries suggested that water masses followed by depth was the dominant effect on eukaryotic micro-organism diversity. However, in one of the vent systems, Loki's Castle, the community was different compared to the reference station. Our data suggest that while the total production of vent systems is higher than the surrounding waters, the biodiversity of eukaryotic micro-organisms is more influenced by both water masses and depth.

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Section: Discussionmentioning

confidence: 99%