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Succession of benthic communities in polar environments: Benthic resilience in polar environments: a comparison (Polar benthic resilience)

Knowledge of macrobenthic community succession and individual growth of benthic invertebrates in polar waters is scarce. Nevertheless, these are basic parameters of understanding the benthic sub-ecosystem, delivering data for modelling and prediction of the cold-water system’s development. We will bridge this gab by analyzing macrobenthic communiti

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Project date

Starts
1999-01-01

Ends
2014-09-30

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Project type

  • field work
  • long-term monitoring
  • data management

Discipline

  • marine biology

Project Keywords

  • biosphere / ecological dynamics / species/population interactions
  • biosphere / ecological dynamics / ecosystem functions

Fieldwork information

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Summary

Knowledge of macrobenthic community succession and individual growth of benthic invertebrates in polar waters is scarce. Nevertheless, these are basic parameters of understanding the benthic sub-ecosystem, delivering data for modelling and prediction of the cold-water system’s development. We will bridge this gab by analyzing macrobenthic communities, colonizing natural and artificial hard and soft substrates of Arctic Kongsfjorden. Samples, taken from 2003 to 2009 and in 2011 on a yearly basis for the shallow subtidal (20m water depth) and in 2009 for 30, 50, 100, 150 and 200m (ROV) provide information on changing species composition, species growth and, with respect to soft substrates, sediment parameters. The set up now provides an unique opportunity to assess the in situ oxygen production of corallines and the respiration budget encompassing the entire size range from microbes to mobile megafauna of the establishing hard bottom community. The oxygen flux through the various hard bottom community fractions will be compiled in models of the total benthic community oxygen production/consumption and its partitioning. The results will be discussed in terms of carbon and nitrogen cycles, including biogenic carbonate production of arctic hard bottom communities.

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