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Benthic macrofaunal bioturbation activities from shelf to deep basin in spring to summer transition in the Arctic Ocean
- Source :
- Marine Environmental Research, Marine Environmental Research, Elsevier science, 2019, 150, pp.104746. ⟨10.1016/j.marenvres.2019.06.008⟩, Marine Environmental Research (0141-1136) (Elsevier BV), 2019-09, Vol. 150, P. 104746 (16p.), Marine Environmental Research, 2019, 150, pp.104746. ⟨10.1016/j.marenvres.2019.06.008⟩
- Publication Year :
- 2019
- Publisher :
- HAL CCSD, 2019.
-
Abstract
- International audience; The aim of this study was to assess bioturbation rates in relation to macrozoobenthos and environmental variables in the Svalbard fjords, Barents Sea and Nansen Basin during spring to summer transition. The results showed differences in benthic community structure across sampled area in relation to sediment type and phytopigment content. Fjords, Barents Sea and the shallow parts of Nansen Basin (< 400 m) were characterized by high functional groups diversity, and by biodiffusive and non-local rates ranging from 0.05 to 1.75 cm−2 y−1 and from 0.2 to 3.2 y−1, respectively. The deeper parts of Nansen Basin (> 400m), dominated by conveyors species, showed only non-local transport rates (0.1–1 y−1). Both coefficients intensity varied with benthic biomass. Non-local transport increased with species richness and density and at stations with mud enriched by fresh phytopigments, whereas biodiffusion varied with sediment type and organic matter quantity. This study quantified for the first time the two modes of sediment mixing in the Arctic, each of which being driven by different environmental and biological situations.
- Subjects :
- 0106 biological sciences
Nansen Basin
Oceans and Seas
Population Dynamics
Fjord
Aquatic Science
Oceanography
010603 evolutionary biology
01 natural sciences
Svalbard
Arctic Ocean
Animals
Biomass
14. Life underwater
Biomass (ecology)
geography
Biodiffusive transport
geography.geographical_feature_category
Arctic Regions
Non-local transport
010604 marine biology & hydrobiology
ACL
Spring season
Community structure
Sediment
General Medicine
15. Life on land
Sea ice cover
Invertebrates
Pollution
13. Climate action
Benthic zone
Macrozoobenthos
[SDE]Environmental Sciences
Environmental science
Seasons
Species richness
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
Bioturbation
Subjects
Details
- Language :
- English
- ISSN :
- 01411136 and 18790291
- Database :
- OpenAIRE
- Journal :
- Marine Environmental Research, Marine Environmental Research, Elsevier science, 2019, 150, pp.104746. ⟨10.1016/j.marenvres.2019.06.008⟩, Marine Environmental Research (0141-1136) (Elsevier BV), 2019-09, Vol. 150, P. 104746 (16p.), Marine Environmental Research, 2019, 150, pp.104746. ⟨10.1016/j.marenvres.2019.06.008⟩
- Accession number :
- edsair.doi.dedup.....37fab002d8c129bd02091fdc012f876b