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Deep-sea nematodes actively colonise sediments, irrespective of the presence of a pulse of organic matter : results from an in-situ experiment

(2011) PLOS ONE. 6(4).
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Abstract
A colonisation experiment was performed in situ at 2500 m water depth at the Arctic deep-sea long-term observatory HAUSGARTEN to determine the response of deep-sea nematodes to disturbed, newly available patches, enriched with organic matter. Cylindrical tubes, laterally covered with a 500 mm mesh, were filled with azoic deep-sea sediment and C-13-labelled food sources (diatoms and bacteria). After 10 days of incubation the tubes were analysed for nematode response in terms of colonisation and uptake. Nematodes actively colonised the tubes, however with densities that only accounted for a maximum of 2.13% (51 ind. 10 cm(-2)) of the ambient nematode assemblages. Densities did not differ according to the presence or absence of organic matter, nor according to the type of organic matter added. The fact that the organic matter did not function as an attractant to nematodes was confirmed by the absence of notable C-13 assimilation by the colonising nematodes. Overall, colonisationappears to be a process that yields reproducible abundance and diversity patterns, with certain taxa showing more efficiency. Together with the high variability between the colonising nematode assemblages, this lends experimental support to the existence of a spatio-temporal mosaic that emerges from highly localised, partially stochastic community dynamics.
Keywords
Deep-sea, Disturbance, Colonisation, Nematodes, LIVING MARINE NEMATODES, MEIOFAUNAL COLONIZATION, VERTICAL-DISTRIBUTION, BENTHIC COMMUNITIES, ANTARCTIC SHELF, SOUTHERN BIGHT, ARCTIC-OCEAN, DISTURBANCE, NORTH-SEA, 13C-tracer experiment, Patch dynamics, In situ experiment, PHYTODETRITUS

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Chicago
Guilini, Katja, Dick van Oevelen, Thomas Soltwedel, and Ann Vanreusel. 2011. “Deep-sea Nematodes Actively Colonise Sediments, Irrespective of the Presence of a Pulse of Organic Matter : Results from an In-situ Experiment.” Plos One 6 (4).
APA
Guilini, K., van Oevelen, D., Soltwedel, T., & Vanreusel, A. (2011). Deep-sea nematodes actively colonise sediments, irrespective of the presence of a pulse of organic matter : results from an in-situ experiment. PLOS ONE, 6(4).
Vancouver
1.
Guilini K, van Oevelen D, Soltwedel T, Vanreusel A. Deep-sea nematodes actively colonise sediments, irrespective of the presence of a pulse of organic matter : results from an in-situ experiment. PLOS ONE. 2011;6(4).
MLA
Guilini, Katja, Dick van Oevelen, Thomas Soltwedel, et al. “Deep-sea Nematodes Actively Colonise Sediments, Irrespective of the Presence of a Pulse of Organic Matter : Results from an In-situ Experiment.” PLOS ONE 6.4 (2011): n. pag. Print.
@article{1215379,
  abstract     = {A colonisation experiment was performed in situ at 2500 m water depth at the Arctic deep-sea long-term observatory HAUSGARTEN to determine the response of deep-sea nematodes to disturbed, newly available patches, enriched with organic matter. Cylindrical tubes, laterally covered with a 500 mm mesh, were filled with azoic deep-sea sediment and C-13-labelled food sources (diatoms and bacteria). After 10 days of incubation the tubes were analysed for nematode response in terms of colonisation and uptake. Nematodes actively colonised the tubes, however with densities that only accounted for a maximum of 2.13\% (51 ind. 10 cm(-2)) of the ambient nematode assemblages. Densities did not differ according to the presence or absence of organic matter, nor according to the type of organic matter added. The fact that the organic matter did not function as an attractant to nematodes was confirmed by the absence of notable C-13 assimilation by the colonising nematodes. Overall, colonisationappears to be a process that yields reproducible abundance and diversity patterns, with certain taxa showing more efficiency. Together with the high variability between the colonising nematode assemblages, this lends experimental support to the existence of a spatio-temporal mosaic that emerges from highly localised, partially stochastic community dynamics.},
  author       = {Guilini, Katja and van Oevelen, Dick and Soltwedel, Thomas and Vanreusel, Ann},
  issn         = {1932-6203},
  journal      = {PLOS ONE},
  keyword      = {Deep-sea,Disturbance,Colonisation,Nematodes,LIVING MARINE NEMATODES,MEIOFAUNAL COLONIZATION,VERTICAL-DISTRIBUTION,BENTHIC COMMUNITIES,ANTARCTIC SHELF,SOUTHERN BIGHT,ARCTIC-OCEAN,DISTURBANCE,NORTH-SEA,13C-tracer experiment,Patch dynamics,In situ experiment,PHYTODETRITUS},
  language     = {eng},
  number       = {4},
  pages        = {12},
  title        = {Deep-sea nematodes actively colonise sediments, irrespective of the presence of a pulse of organic matter : results from an in-situ experiment},
  url          = {http://dx.doi.org/10.1371/journal.pone.0018912},
  volume       = {6},
  year         = {2011},
}

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