Raphaelle Descoteaux » Members

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Raphaelle Descoteaux

PhD candidate UiT The Arctic University of NorwayArctic and Marine Biology
Work address Department of Arctic and Marine Biology Faculty of Biosciences, Fisheries and Economics UiT The Arctic University of Norway Tromsø 9037 Norway Work Phone: +47 77 64 57 74 Website: UiT profile Website: Arctic SIZE project
Photo of Raphaelle Descoteaux

Biography

PhD project title:

Phenology of life cycles in benthic invertebrates of the Arctic seasonal ice zone

PhD project description:

Waters advected into the Arctic from sub-Arctic seas carry nutrients and living organisms which can have important repercussions for the benthic communities of the Arctic. Many marine benthic invertebrates release planktonic larvae which can drift with water currents. Because of their long residence time in the water column, some planktonic larvae have the potential to disperse over long distances before settling to the seafloor. This implies that sub-Arctic species can potentially reach the Arctic during their larval stages, though not all find suitable conditions to settle and live to adulthood there, at least not yet. In light of the ongoing ‘borealization’ of biota and food webs and ‘atlantification’ of hydrographic conditions in the Arctic inflow areas, my research aims to determine whether sub-Arctic species are currently entering the Arctic at the larval stage and surviving to the juvenile stage. I am using molecular methods to identify the larvae and juveniles which are difficult to identify morphologically and to characterize their diet.

Start date: March 2017
Planned submission date: March 2021

Supervisors:

Bodil Bluhm (UiT, Tromsø, Norway)

Jørgen Berge (UiT, Tromsø, Norway)

Randi Ingvaldsen (IMR, Bergen, Norway)

Kim Præbel (UiT, Tromsø, Norway)

Paul Renaud (Akvaplan NIVA, Tromsø, Norway)

Outreach/popular science:

Youtube series on one of the research expeditions I have participated in:

Marine night cruise 2018