P4 (NLEG11)

• Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  Event ID: 92de836e-b87b-11e9-8f49-000c29fb4a96
  Parent Event ID: ef09b28c-b5ec-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-13T18:49:00
  Station: P4 (NLEG11)
  Location: 79° 44' 51" N , 33° 59' 7" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Sampletype: Particulate elements
  Sampling protocol: Nansen Legacy Protocol
  Gear type: WP2 90 um
  Sample depth (m): 70.00
  Bottom depth (m): 338.43
  Person of Interest

  Name: Angela Stippkugel

  Email: angela.stippkugel@ntnu.no

  Institution: Norwegian University of Science and Technology
  Show more metadata

  Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  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 dierent 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, eects 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 m) represent an important intermediate link between primary producers and secondary consumers such as mesozooplankton and sh larvae. The capacities of micrograzers to buer 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 sh and planktivorous shes. Changes in the quantities and nutritional quality at lower trophic levels may have consequences for higher trophic ones. Arctic-inuenced regions of the Barents Sea dier fundamentally from Atlantic-inuenced 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 eciencies 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: angela.stippkugel@ntnu.no
  projectID: RCN # 276730
  pi_address: Trondhjem Biologisk Stasjon, Bynesveien 46, 7491 Trondheim
  recordedBy: Angela Stippkugel
  pi_institution: NTNU Trondheim
  

  Created: 2020-05-06T13:42:15

  Modified: 2021-08-12T08:45:34

  History: 2020-05-06T13:42:15Z: Initial read in of the log files. 2021-08-12T08:45:34Z: Standardising PI email and institutions

  Event remarks: CN copepods

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 54
  fixative: oven dried
  storageTemp: Room temp
  maximumDepthInMeters: 70
  minimumDepthInMeters: 0
  

• Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  Event ID: f90f5574-baa5-11e9-8f49-000c29fb4a96
  Parent Event ID: ef09b28c-b5ec-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-13T18:49:00
  Station: P4 (NLEG11)
  Location: 79° 44' 51" N , 33° 59' 7" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Sampletype: Particulate elements
  Sampling protocol: Nansen Legacy Protocol
  Gear type: WP2 90 um
  Sample depth (m): 70.00
  Bottom depth (m): 338.43
  Person of Interest

  Name: Angela Stippkugel

  Email: angela.stippkugel@ntnu.no

  Institution: Norwegian University of Science and Technology
  Show more metadata

  Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  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 dierent 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, eects 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 m) represent an important intermediate link between primary producers and secondary consumers such as mesozooplankton and sh larvae. The capacities of micrograzers to buer 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 sh and planktivorous shes. Changes in the quantities and nutritional quality at lower trophic levels may have consequences for higher trophic ones. Arctic-inuenced regions of the Barents Sea dier fundamentally from Atlantic-inuenced 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 eciencies 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: angela.stippkugel@ntnu.no
  projectID: RCN # 276730
  pi_address: Trondhjem Biologisk Stasjon, Bynesveien 46, 7491 Trondheim
  recordedBy: Angela Stippkugel
  pi_institution: NTNU Trondheim
  

  Created: 2020-05-06T13:42:15

  Modified: 2021-08-12T08:45:34

  History: 2020-05-06T13:42:15Z: Initial read in of the log files. 2021-08-12T08:45:34Z: Standardising PI email and institutions

  Event remarks: Organisms

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 54
  storageTemp: neg 80 C
  maximumDepthInMeters: 70
  minimumDepthInMeters: 0
  

• Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  Event ID: d8c488fc-baa5-11e9-8f49-000c29fb4a96
  Parent Event ID: ef09b28c-b5ec-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-13T18:49:00
  Station: P4 (NLEG11)
  Location: 79° 44' 51" N , 33° 59' 7" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Sampletype: Particulate elements
  Sampling protocol: Nansen Legacy Protocol
  Gear type: WP2 90 um
  Sample depth (m): 70.00
  Bottom depth (m): 338.43
  Person of Interest

  Name: Angela Stippkugel

  Email: angela.stippkugel@ntnu.no

  Institution: Norwegian University of Science and Technology
  Show more metadata

  Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  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 dierent 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, eects 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 m) represent an important intermediate link between primary producers and secondary consumers such as mesozooplankton and sh larvae. The capacities of micrograzers to buer 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 sh and planktivorous shes. Changes in the quantities and nutritional quality at lower trophic levels may have consequences for higher trophic ones. Arctic-inuenced regions of the Barents Sea dier fundamentally from Atlantic-inuenced 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 eciencies 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: angela.stippkugel@ntnu.no
  projectID: RCN # 276730
  pi_address: Trondhjem Biologisk Stasjon, Bynesveien 46, 7491 Trondheim
  recordedBy: Angela Stippkugel
  pi_institution: NTNU Trondheim
  

  Created: 2020-05-06T13:42:15

  Modified: 2021-08-12T08:45:34

  History: 2020-05-06T13:42:15Z: Initial read in of the log files. 2021-08-12T08:45:34Z: Standardising PI email and institutions

  Event remarks: Organisms

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 54
  storageTemp: neg 80 C
  maximumDepthInMeters: 70
  minimumDepthInMeters: 0
  

• Grazing Experiments

  Event ID: 00ad5a98-a228-11e8-91c9-005056a2b019
  Event date: 2018-08-14T09:37:00
  Station: P4 (NLEG11)
  Location: 79° 44' 59" N , 34° 0' 9" E
  Cruise number: 2018707
  Cruise name: 2018 Joint Cruise 1-2
  Sampling protocol: Nansen Legacy Sampling protocols version 1 section 10.4.1
  Gear type: WP2 90 um
  Sample depth (m): 100.00
  Bottom depth (m): 335.00
  Person of Interest

  Name: Angela Stippkugel

  Email: nicole.aberle-malzahn@ntnu.no

  Institution: Norwegian University of Science and Technology
  Show more metadata

  Grazing Experiments

  pi_name: Nicole Aberle-Malzahn/Angela Stippkugel
  

  Abstract

  Micro- and mesozooplankton grazing experiments

  
  pi_email: nicole.aberle-malzahn@ntnu.no
  projectID: The Nansen Legacy (RCN #276730)
  pi_address: Bynesveien 46, 7046 Trondheim
  recordedBy: Angela Stippkugel and Nicole Aberle-Malzahn
  pi_institution: NTNU Trondheim Norway
  

  Created: 2018-11-05T10:17:52

  Modified: 2021-08-12T08:36:02

  History: 2018-11-05T10:17:52Z: Initial read in of the log files. 2018-11-05T12:56:01Z: Added missing GO-FLO cast 2018-11-05T16:10:01Z: Rewriting wrongly inherited fields 2018-11-07T13:49:26Z: Updated station names 2018-12-03T16:11:43Z: Gear type standardised 2019-05-13T13:36:57Z: Added 90 um to geartype 2021-08-12T08:36:02Z: Standardising PI email and institutions

  Event remarks: Registered by Pål after cruise

  Source document: AeN_JC1_2_2018707_MicrozooGrazing.xlsx

  Child events

  Event ID	Event datetime	Cruise number	Bottle number	Bottom depth (m)	Sample depth (m)	Station name ref	Gear Type	PI Name	PI Institution
  2a0fbb2c-9f23-11e8-91c9-005056a2b019	2018-08-14T09:37:00Z	2018707		335.00	100.00	P4 (NLEG11)	WP2 90 um	Angela Stippkugel	Norwegian University of Science and Technology
  2ce04c86-9f23-11e8-91c9-005056a2b019	2018-08-14T09:37:00Z	2018707		335.00	100.00	P4 (NLEG11)	WP2 90 um	Angela Stippkugel	Norwegian University of Science and Technology
  282fc680-9f23-11e8-91c9-005056a2b019	2018-08-14T09:37:00Z	2018707		335.00	100.00	P4 (NLEG11)	WP2 90 um	Angela Stippkugel	Norwegian University of Science and Technology

• Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  Event ID: 8ff49408-b87c-11e9-8f49-000c29fb4a96
  Parent Event ID: ef09b28c-b5ec-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-13T18:49:00
  Station: P4 (NLEG11)
  Location: 79° 44' 51" N , 33° 59' 7" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Sampletype: Particulate elements
  Sampling protocol: Nansen Legacy Protocol
  Gear type: WP2 90 um
  Sample depth (m): 70.00
  Bottom depth (m): 338.43
  Person of Interest

  Name: Angela Stippkugel

  Email: angela.stippkugel@ntnu.no

  Institution: Norwegian University of Science and Technology
  Show more metadata

  Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  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 dierent 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, eects 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 m) represent an important intermediate link between primary producers and secondary consumers such as mesozooplankton and sh larvae. The capacities of micrograzers to buer 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 sh and planktivorous shes. Changes in the quantities and nutritional quality at lower trophic levels may have consequences for higher trophic ones. Arctic-inuenced regions of the Barents Sea dier fundamentally from Atlantic-inuenced 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 eciencies 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: angela.stippkugel@ntnu.no
  projectID: RCN # 276730
  pi_address: Trondhjem Biologisk Stasjon, Bynesveien 46, 7491 Trondheim
  recordedBy: Angela Stippkugel
  pi_institution: NTNU Trondheim
  

  Created: 2020-05-06T13:42:15

  Modified: 2021-08-12T08:45:34

  History: 2020-05-06T13:42:15Z: Initial read in of the log files. 2021-08-12T08:45:34Z: Standardising PI email and institutions

  Event remarks: CN copepods

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 54
  fixative: oven dried
  storageTemp: Room temp
  maximumDepthInMeters: 70
  minimumDepthInMeters: 0
  

• Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  Event ID: 1f500184-b87b-11e9-8f49-000c29fb4a96
  Parent Event ID: 81263d5c-b5ef-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-14T11:06:00
  Station: P4 (NLEG11)
  Location: 79° 42' 50" N , 34° 15' 59" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Bottle number: 9
  Sampletype: Microzooplankton abundance
  Sampling protocol: Nansen Legacy Protocol
  Gear type: CTD w/bottles
  Sample depth (m): 330.00
  Bottom depth (m): 341.28
  Person of Interest

  Name: Angela Stippkugel

  Email: angela.stippkugel@ntnu.no

  Institution: Norwegian University of Science and Technology
  Show more metadata

  Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  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 dierent 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, eects 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 m) represent an important intermediate link between primary producers and secondary consumers such as mesozooplankton and sh larvae. The capacities of micrograzers to buer 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 sh and planktivorous shes. Changes in the quantities and nutritional quality at lower trophic levels may have consequences for higher trophic ones. Arctic-inuenced regions of the Barents Sea dier fundamentally from Atlantic-inuenced 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 eciencies 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: angela.stippkugel@ntnu.no
  projectID: RCN # 276730
  pi_address: Trondhjem Biologisk Stasjon, Bynesveien 46, 7491 Trondheim
  recordedBy: Angela Stippkugel
  pi_institution: NTNU Trondheim
  

  Created: 2020-05-06T13:42:15

  Modified: 2021-08-12T08:45:34

  History: 2020-05-06T13:42:15Z: Initial read in of the log files. 2021-08-12T08:45:34Z: Standardising PI email and institutions

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 167
  fixative: 1% acidic Lugol
  storageTemp: Room temp
  

• Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  Event ID: fae93072-baa5-11e9-8f49-000c29fb4a96
  Parent Event ID: ef09b28c-b5ec-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-13T18:49:00
  Station: P4 (NLEG11)
  Location: 79° 44' 51" N , 33° 59' 7" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Sampletype: Particulate elements
  Sampling protocol: Nansen Legacy Protocol
  Gear type: WP2 90 um
  Sample depth (m): 70.00
  Bottom depth (m): 338.43
  Person of Interest

  Name: Angela Stippkugel

  Email: angela.stippkugel@ntnu.no

  Institution: Norwegian University of Science and Technology
  Show more metadata

  Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  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 dierent 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, eects 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 m) represent an important intermediate link between primary producers and secondary consumers such as mesozooplankton and sh larvae. The capacities of micrograzers to buer 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 sh and planktivorous shes. Changes in the quantities and nutritional quality at lower trophic levels may have consequences for higher trophic ones. Arctic-inuenced regions of the Barents Sea dier fundamentally from Atlantic-inuenced 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 eciencies 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: angela.stippkugel@ntnu.no
  projectID: RCN # 276730
  pi_address: Trondhjem Biologisk Stasjon, Bynesveien 46, 7491 Trondheim
  recordedBy: Angela Stippkugel
  pi_institution: NTNU Trondheim
  

  Created: 2020-05-06T13:42:15

  Modified: 2021-08-12T08:45:34

  History: 2020-05-06T13:42:15Z: Initial read in of the log files. 2021-08-12T08:45:34Z: Standardising PI email and institutions

  Event remarks: Organisms

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 54
  storageTemp: neg 80 C
  maximumDepthInMeters: 70
  minimumDepthInMeters: 0
  

• Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  Event ID: 467da95a-b87b-11e9-8f49-000c29fb4a96
  Parent Event ID: ef09b28c-b5ec-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-13T18:49:00
  Station: P4 (NLEG11)
  Location: 79° 44' 51" N , 33° 59' 7" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Sampletype: Particulate elements
  Sampling protocol: Nansen Legacy Protocol
  Gear type: WP2 90 um
  Sample depth (m): 70.00
  Bottom depth (m): 338.43
  Person of Interest

  Name: Angela Stippkugel

  Email: angela.stippkugel@ntnu.no

  Institution: Norwegian University of Science and Technology
  Show more metadata

  Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  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 dierent 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, eects 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 m) represent an important intermediate link between primary producers and secondary consumers such as mesozooplankton and sh larvae. The capacities of micrograzers to buer 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 sh and planktivorous shes. Changes in the quantities and nutritional quality at lower trophic levels may have consequences for higher trophic ones. Arctic-inuenced regions of the Barents Sea dier fundamentally from Atlantic-inuenced 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 eciencies 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: angela.stippkugel@ntnu.no
  projectID: RCN # 276730
  pi_address: Trondhjem Biologisk Stasjon, Bynesveien 46, 7491 Trondheim
  recordedBy: Angela Stippkugel
  pi_institution: NTNU Trondheim
  

  Created: 2020-05-06T13:42:15

  Modified: 2021-08-12T08:45:34

  History: 2020-05-06T13:42:15Z: Initial read in of the log files. 2021-08-12T08:45:34Z: Standardising PI email and institutions

  Event remarks: CN copepods

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 54
  fixative: oven dried
  storageTemp: Room temp
  maximumDepthInMeters: 70
  minimumDepthInMeters: 0
  

• Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  Event ID: ded4ca22-baa5-11e9-8f49-000c29fb4a96
  Parent Event ID: ef09b28c-b5ec-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-13T18:49:00
  Station: P4 (NLEG11)
  Location: 79° 44' 51" N , 33° 59' 7" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Sampletype: Particulate elements
  Sampling protocol: Nansen Legacy Protocol
  Gear type: WP2 90 um
  Sample depth (m): 70.00
  Bottom depth (m): 338.43
  Person of Interest

  Name: Angela Stippkugel

  Email: angela.stippkugel@ntnu.no

  Institution: Norwegian University of Science and Technology
  Show more metadata

  Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  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 dierent 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, eects 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 m) represent an important intermediate link between primary producers and secondary consumers such as mesozooplankton and sh larvae. The capacities of micrograzers to buer 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 sh and planktivorous shes. Changes in the quantities and nutritional quality at lower trophic levels may have consequences for higher trophic ones. Arctic-inuenced regions of the Barents Sea dier fundamentally from Atlantic-inuenced 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 eciencies 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: angela.stippkugel@ntnu.no
  projectID: RCN # 276730
  pi_address: Trondhjem Biologisk Stasjon, Bynesveien 46, 7491 Trondheim
  recordedBy: Angela Stippkugel
  pi_institution: NTNU Trondheim
  

  Created: 2020-05-06T13:42:15

  Modified: 2021-08-12T08:45:34

  History: 2020-05-06T13:42:15Z: Initial read in of the log files. 2021-08-12T08:45:34Z: Standardising PI email and institutions

  Event remarks: Organisms

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 54
  storageTemp: neg 80 C
  maximumDepthInMeters: 70
  minimumDepthInMeters: 0
  

• Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  Event ID: 799b8d88-b87c-11e9-8f49-000c29fb4a96
  Parent Event ID: 81263d5c-b5ef-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-14T11:06:00
  Station: P4 (NLEG11)
  Location: 79° 42' 50" N , 34° 15' 59" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Bottle number: 9
  Sampletype: Microbial abundance
  Sampling protocol: Nansen Legacy Protocol
  Gear type: CTD w/bottles
  Sample depth (m): 330.00
  Bottom depth (m): 341.28
  Person of Interest

  Name: Angela Stippkugel

  Email: angela.stippkugel@ntnu.no

  Institution: Norwegian University of Science and Technology
  Show more metadata

  Trophic transfer and nutritional variations at the primary producer-consumer interface of Barents Sea plankton communities

  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 dierent 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, eects 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 m) represent an important intermediate link between primary producers and secondary consumers such as mesozooplankton and sh larvae. The capacities of micrograzers to buer 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 sh and planktivorous shes. Changes in the quantities and nutritional quality at lower trophic levels may have consequences for higher trophic ones. Arctic-inuenced regions of the Barents Sea dier fundamentally from Atlantic-inuenced 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 eciencies 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: angela.stippkugel@ntnu.no
  projectID: RCN # 276730
  pi_address: Trondhjem Biologisk Stasjon, Bynesveien 46, 7491 Trondheim
  recordedBy: Angela Stippkugel
  pi_institution: NTNU Trondheim
  

  Created: 2020-05-06T13:42:15

  Modified: 2021-08-12T08:45:34

  History: 2020-05-06T13:42:15Z: Initial read in of the log files. 2021-08-12T08:45:34Z: Standardising PI email and institutions

  Event remarks: FlowCytometry_BacteriaHNF

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 167
  fixative: 25% Glutaraldehyde
  storageTemp: neg 80 C