P7 (NLEG25/NPAL16)

• Metabarcoding Q1_CC

  Event ID: 0f04afb1-8917-11e9-8a84-a0481c9e7d26
  Parent Event ID: 6680a8f0-870b-11eb-a0a8-5f5a32a57a13
  Event date: 2021-03-17T10:27:39
  Station: P7 (NLEG25/NPAL16)
  Location: 81° 59' 36" N , 29° 54' 31" E
  Cruise number: 2021703
  Cruise name: 2021 Seasonal Study Q1
  Sampletype: Chlorophyll a > 10 um
  Sampling protocol: Nansen Legacy sampling Protocol_version 4_7.12
  Gear type: CTD w/bottles
  Sample depth (m): 3,290.00
  Bottom depth (m): 3,302.55
  Person of Interest

  Name: Anna Vader

  Email: annav@unis.no

  Institution: University Centre in Svalbard
  Show more metadata

  Metabarcoding Q1_CC

  pi_name: Anna Vader
  

  Abstract

  Chlorophyll a filtration through GFF and 10µm filter to check for fluoroscence.

  
  pi_email: annav@unis.no
  projectID: The Nansen Legacy (RCN # 276730)
  pi_address: UNIS longyearbyen
  recordedBy: Cheshtaa Chitkara, Snorre Flo
  pi_institution: UNIS
  

  Created: 2021-04-26T11:45:51

  Modified: 2021-08-12T08:38:02

  History: 2021-04-26T11:45:51Z: Initial read in of the log files. 2021-05-31T09:24:53Z: Updating station names 2021-08-12T08:38:02Z: Standardising PI email and institutions

  Event remarks: CTD standard deep

  Source document: AeN_2021703_metadata_chla_Cheshtaa_edits.xlsx

  statID: 28
  end_date: 2021-03-17 00:00:00
  end_time: 13:39:03.776000
  start_date: 2021-03-17 00:00:00
  vesselName: Kronprins Haakon
  description: Bottom
  endDecimalLatitude: 81.9906789166667
  endDecimalLongitude: 29.8549903333333
  maximumDepthInMeters: 3371.135
  minimumDepthInMeters: 0
  filteredVolumeInMilliliters: 1000
  

• Metabarcoding Q1_CC

  Event ID: 0f04afc0-8917-11e9-8a84-a0481c9e7d26
  Parent Event ID: 6680a8f0-870b-11eb-a0a8-5f5a32a57a13
  Event date: 2021-03-17T10:27:39
  Station: P7 (NLEG25/NPAL16)
  Location: 81° 59' 36" N , 29° 54' 31" E
  Cruise number: 2021703
  Cruise name: 2021 Seasonal Study Q1
  Sampletype: Chlorophyll a tot
  Sampling protocol: Nansen Legacy sampling Protocol_version 4_7.11
  Gear type: CTD w/bottles
  Sample depth (m): 3,290.00
  Bottom depth (m): 3,302.55
  Person of Interest

  Name: Anna Vader

  Email: annav@unis.no

  Institution: University Centre in Svalbard
  Show more metadata

  Metabarcoding Q1_CC

  pi_name: Anna Vader
  

  Abstract

  Chlorophyll a filtration through GFF and 10µm filter to check for fluoroscence.

  
  pi_email: annav@unis.no
  projectID: The Nansen Legacy (RCN # 276730)
  pi_address: UNIS longyearbyen
  recordedBy: Cheshtaa Chitkara, Snorre Flo
  pi_institution: UNIS
  

  Created: 2021-04-26T11:45:51

  Modified: 2021-08-12T08:38:02

  History: 2021-04-26T11:45:51Z: Initial read in of the log files. 2021-05-31T09:24:53Z: Updating station names 2021-08-12T08:38:02Z: Standardising PI email and institutions

  Event remarks: CTD standard deep

  Source document: AeN_2021703_metadata_chla_Cheshtaa_edits.xlsx

  statID: 28
  end_date: 2021-03-17 00:00:00
  end_time: 13:39:03.776000
  start_date: 2021-03-17 00:00:00
  vesselName: Kronprins Haakon
  description: Bottom
  endDecimalLatitude: 81.9906789166667
  endDecimalLongitude: 29.8549903333333
  maximumDepthInMeters: 3371.135
  minimumDepthInMeters: 0
  filteredVolumeInMilliliters: 1000
  

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

  Event ID: d7e843fe-c286-11e9-8f49-000c29fb4a96
  Parent Event ID: 84baf08e-b5ef-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-20T18:08:00
  Station: P7 (NLEG25/NPAL16)
  Location: 81° 58' 9" N , 29° 37' 18" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Bottle number: 4
  Sampletype: Protist abundance and taxonomy
  Sampling protocol: Nansen Legacy Protocol
  Gear type: CTD w/bottles
  Sample depth (m): 3,280.00
  Bottom depth (m): 3,293.25
  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_PicoNanoplankton

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 188
  fixative: 25% Glutaraldehyde
  storageTemp: neg 80 C
  

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

  Event ID: 9aaf55ea-c835-11e9-8f49-000c29fb4a96
  Parent Event ID: 84baf08e-b5ef-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-20T18:08:00
  Station: P7 (NLEG25/NPAL16)
  Location: 81° 58' 9" N , 29° 37' 18" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Bottle number: 4
  Sampletype: HPLC Pigments
  Sampling protocol: Nansen Legacy Protocol
  Gear type: CTD w/bottles
  Sample depth (m): 3,280.00
  Bottom depth (m): 3,293.25
  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: 188
  storageTemp: neg 80 C
  

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

  Event ID: 8c70ca14-c285-11e9-8f49-000c29fb4a96
  Parent Event ID: 84baf08e-b5ef-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-20T18:08:00
  Station: P7 (NLEG25/NPAL16)
  Location: 81° 58' 9" N , 29° 37' 18" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Bottle number: 4
  Sampletype: Chlorophyll a tot
  Sampling protocol: Nansen Legacy Protocol
  Gear type: CTD w/bottles
  Sample depth (m): 3,280.00
  Bottom depth (m): 3,293.25
  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: 188
  fixative: Methanol
  storageTemp: Cool room
  

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

  Event ID: ba84d1a8-c284-11e9-8f49-000c29fb4a96
  Parent Event ID: 84baf08e-b5ef-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-20T18:08:00
  Station: P7 (NLEG25/NPAL16)
  Location: 81° 58' 9" N , 29° 37' 18" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Bottle number: 4
  Sampletype: Nutrients
  Sampling protocol: Nansen Legacy Protocol
  Gear type: CTD w/bottles
  Sample depth (m): 3,280.00
  Bottom depth (m): 3,293.25
  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: excess Nutrient control

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 188
  storageTemp: neg 20 C
  

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

  Event ID: fc8e63b2-c288-11e9-8f49-000c29fb4a96
  Parent Event ID: 84baf08e-b5ef-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-20T18:08:00
  Station: P7 (NLEG25/NPAL16)
  Location: 81° 58' 9" N , 29° 37' 18" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Bottle number: 4
  Sampletype: Nutrients
  Sampling protocol: Nansen Legacy Protocol
  Gear type: CTD w/bottles
  Sample depth (m): 3,280.00
  Bottom depth (m): 3,293.25
  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: Ammonia

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 188
  storageTemp: neg 20 C
  

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

  Event ID: 69f39d98-c287-11e9-8f49-000c29fb4a96
  Parent Event ID: 84baf08e-b5ef-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-20T18:08:00
  Station: P7 (NLEG25/NPAL16)
  Location: 81° 58' 9" N , 29° 37' 18" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Bottle number: 4
  Sampletype: Microbial abundance
  Sampling protocol: Nansen Legacy Protocol
  Gear type: CTD w/bottles
  Sample depth (m): 3,280.00
  Bottom depth (m): 3,293.25
  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: 188
  fixative: 25% Glutaraldehyde
  storageTemp: neg 80 C
  

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

  Event ID: 2fe22c4e-c289-11e9-8f49-000c29fb4a96
  Parent Event ID: 84baf08e-b5ef-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-20T18:08:00
  Station: P7 (NLEG25/NPAL16)
  Location: 81° 58' 9" N , 29° 37' 18" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Bottle number: 4
  Sampletype: Microzooplankton abundance
  Sampling protocol: Nansen Legacy Protocol
  Gear type: CTD w/bottles
  Sample depth (m): 3,280.00
  Bottom depth (m): 3,293.25
  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: MZP

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 188
  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: 9def43f8-c288-11e9-8f49-000c29fb4a96
  Parent Event ID: 84baf08e-b5ef-11e9-acd1-a0481c9e7d26
  Event date: 2019-08-20T18:08:00
  Station: P7 (NLEG25/NPAL16)
  Location: 81° 58' 9" N , 29° 37' 18" E
  Cruise number: 2019706
  Cruise name: 2019 Seasonal Study Q3
  Bottle number: 4
  Sampletype: Protist abundance and taxonomy
  Sampling protocol: Nansen Legacy Protocol
  Gear type: CTD w/bottles
  Sample depth (m): 3,280.00
  Bottom depth (m): 3,293.25
  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_PicoNanoplankton

  Source document: AeN_2019706_AStippkugel.xlsx

  statID: 188
  fixative: 25% Glutaraldehyde
  storageTemp: neg 80 C