Nansen Legacy sample details

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Event ID 4178006e-b875-11e9-8f48-000c29fb4a96
Parent Event ID 884e6a96-b5ef-11e9-acd1-a0481c9e7d26
Cruise Number 2019706
Station Name P1 (NLEG01)
Event Time (UTC) 09:21:00
Event Date 2019-08-08
Decimal Latitude 76.0031
Decimal Longitude 31.2141
Sample Type Protist abundance and taxonomy
Gear Type CTD w/bottles
Sample Depth (m) 73
Bottom Depth (m) 325.86
Niskin Bottle Number 5
Sampling protocol Nansen Legacy Protocol
Sample Location NTNU
PI name Astippkugel
PI e-mail
PI insitution NTNU
Recorded By Astippkugel
Event Remarks Cytosense
Other Information
Key Value
statID 150
fixative Glutaraldehyde
storageTemp neg 80 C
Key Value
title Trophic transfer and nutritional variations at the primary
producer-consumer interface of Barents Sea plankton
pi name Angela Stippkugel
abstract This PhD project aims to investigate nutritional variations and selective feeding of Arctic and sub-
Arctic plankton consumers along latitudinal gradients in di\u001berent seasons as part of the Nansen Legacy
project focusing on comprehensive studies of the Barents Sea ecosystems in the context of ongoing
climate change. The main focus will be placed on the primary producer-consumer link of lower trophic
plankton communities in the Barents Sea and adjacent Arctic Ocean. By means of dilution and/or
grazer exclusion experiments, e\u001bects of food quantity and quality on growth and nutritional composition
of consumers will be investigated as well as selective grazing and food web structures using natural
plankton communities.
As main grazers in the microbial loop, microzooplankton (20-200 \u0016m) represent an important
intermediate link between primary producers and secondary consumers such as mesozooplankton and
\u001csh larvae. The capacities of micrograzers to bu\u001ber nutritional imbalances at the primary producerconsumer
interface (trophic upgrading) will be considered. Mesozooplankton (0.2 mm-2 cm) in turn
represents an important food source for higher trophic levels such as early life stages of \u001csh and
planktivorous \u001cshes. Changes in the quantities and nutritional quality at lower trophic levels may have
consequences for higher trophic ones.
Arctic-in\u001duenced regions of the Barents Sea di\u001ber fundamentally from Atlantic-in\u001duenced ones.
Experiments along a south-to-north gradient will help to quantify the structure and function of the
poorly described northern ecosystem in contrast to central and southern ecosystems. The results will
help to understand the dynamics between primary producers and consumers as well as the overall energy
transfer e\u001eciencies in marine food webs. This knowledge can be used to improve future projections
and management concepts for the ecosystem of the Barents Sea in particular and other transitional
polar regions in general.
pi email
projectID RCN # 276730
pi address Trondhjem Biologisk Stasjon, Bynesveien 46, 7491 Trondheim
recordedBy Angela Stippkugel
pi institution NTNU Trondheim
Entry created 2020-05-06 13:42:15+00
Entry modified last 2020-05-06 13:42:15+00
Modification history 2020-05-06T13:42:15Z: Initial read in of the log files.
Source file AeN_2019706_AStippkugel.xlsx