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Breadcrumb

  • Home
  • Sample depth (m): 800 - 900
  • Nansen Legacy Search
Enter cruise number to show event(s) for that cruise
Sample depth in meters
Enter upper or lower sample depth to search on using the operators.

Station name

  • P6 (NLEG21/NPAL15)
  • AT-800
  • 345
  • IOPAS14
  • NLEG22
  • NLEG24

Person of interest

  • Paul Renaud (125)
  • Marit Reigstad (71)
  • Gunnar Bratbak (70)
  • Rolf Gradinger (61)
  • Elisabeth Alve (56)
  • Lise Øvreås (55)
  • Miriam Marquardt (28)
  • Anna Vader (27)
  • Murat Van Ardelan (25)
  • Bodil Bluhm (22)
  • Henning Reiss (20)
  • Melissa Chierici (18)
  • Agneta Fransson (15)
  • Jorun Egge (15)
  • Tatiana Tsagaraki (15)
  • Bente Edvardsen (14)
  • Oliver Müller (14)
  • Elizabeth Jones (12)
  • Yasemin Bodur (12)
  • Aud Larsen (6)
  • Janne Søreide (6)
  • Ruth-Anne Sandaa (5)
  • Andreas Altenburger (3)
  • Sebastian Gerland (3)
  • Arild Sundfjord (2)
  • Mats Granskog (1)

Institution

  • University of Tromsø
  • Akvaplan-Niva
  • University of Bergen
  • University of Oslo
  • University Centre in Svalbard
  • Institute of Marine Research
  • Norwegian University of Science and Technology
  • Norwegian Polar Institute
  • Nord University
Displaying 1 - 10 of 566

NLEG22

  • Niskin bottles, JC2-1 Joint Process Cruise

    Event ID: 11f0a8e7-e4c6-11eb-ae89-005056a2bfc1
    Parent Event ID: 511a3570-eba7-11eb-afc5-a3f13bbd5a61
    Event date: 2021-07-23T11:15:41
    Station: NLEG22
    Location: 81° 35' 14" N , 30° 42' 47" E
    Cruise number: 2021708
    Cruise name: 2021 Joint Cruise 2-1
    Bottle number: 7
    Sampletype: Niskin Bottle
    Sampling protocol: Nansen Legacy Sampling Protocols version 8 section 6.2
    Gear type: CTD w/bottles
    Sample depth (m): 899.35
    Bottom depth (m): 1,545.53
    Person of Interest
    Name: Elizabeth Jones, Marit Reigstad
    Email: elizabeth.jones@hi.no, marit.reigstad@uit.no
    Institution: Institute of Marine Research, University of Tromsø
    Show more metadata

    Niskin bottles, JC2-1 Joint Process Cruise

    pi_name: Libby Jones; Marit Reigstad

    Abstract

    Log of Niskin bottles taken on the JC2-1 Joint Process Cruise (IMR cruise number 2021708) in the Barents Sea, 12th July 2021 - 29th July 2021. A ring of Niksin bottles are bolted to a CTD, and sample water at different depths depending on the water budget provided by the scientists onboard. The water is circulated around the scientists for their sampling. Multiple bottles are sample the same depth if more water is required than one bottle can hold. For details on the method, see version 8 of the Nansen Legacy sampling protocols, section 6.2.


    pi_email: elizabeth.jones@hi.no; marit.reigstad@uit.no
    projectID: The Nansen Legacy (RCN # 276730)
    pi_address: IMR, Tromsø; UiT, Tromsø
    recordedBy: Luke Marsden
    pi_institution: IMR; UIT
    Created: 2021-08-10T11:17:50
    Modified: 2021-11-04T13:14:18
    History: 2021-08-10T11:17:50Z: Initial read in of the log files. 2021-08-10T11:18:37Z: Correcting eventIDs that were duplicated 2021-08-12T09:55:17Z: Standardising PI email and institutions 2021-11-04T13:14:18Z: Retrieving sampledepthinmeters from .btl files
    Source document: AeN_2021708_JC21_NISKIN_Luke_Marsden.xlsx
    statID: 344
    end_date: 2021-07-23 00:00:00
    end_time: 12:38:36.903000
    start_date: 2021-07-23 00:00:00
    vesselName: Kronprins Haakon
    endDecimalLatitude: 81.5858350333333
    endDecimalLongitude: 30.7172912166667
    maximumDepthInMeters: 1540
    minimumDepthInMeters: 5

    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
    f707c8c0-e71b-11eb-a4d0-fb7ecc325611 2021-07-23T11:15:41Z 2021708 7 1545.53 899.35 NLEG22 CTD w/bottles Melissa Chierici, Agneta Fransson Institute of Marine Research, Norwegian Polar Institute

345 (2019 Mooring Service/A-Twain)

  • MSC1 + A-TWAIN

    Event ID: eff2a8b0-0ded-11ea-a5f2-000c29fb4a96
    Parent Event ID: b3969c99-1011-11ea-a5f2-000c29fb4a96
    Event date: 2019-11-19T06:58:00
    Station: 345 (2019 Mooring Service/A-Twain)
    Location: 81° 32' 56" N , 30° 52' 15" E
    Cruise number: 2019710
    Cruise name: 2019 Mooring Service/A-Twain
    Bottle number: 1
    Sampletype: Nutrients
    Gear type: CTD w/bottles
    Sample depth (m): 891.64
    Bottom depth (m): 880.62
    Person of Interest
    Name: Marit Reigstad
    Email: marit.reigstad@uit.no
    Institution: University of Tromsø
    Show more metadata

    MSC1 + A-TWAIN

    pi_name: Arild Sundfjord

    Abstract

    Joint cruise between Nansen Legacy and A-TWAIN/SIOS-InfraNor. Mostly recovery and deployment of moorings, CTD stations and transesects, VM- and L-ADCP transects. Some water sampling for BGC analysis. Glider deployment.


    pi_email: arild.sundfjord@npolar.no
    projectID: RCN # 276730
    pi_address: Fram Centre, 9296 Tromsø, Norway
    recordedBy: Arild Sundfjord; Angelika H. H. Renner; Kristine Cerbule; Kristen Fossan; Ceslav Czyz; Øyvind Lundesgaard; Terje Hovland; Marcos Porcires; Kjersti Kalhagen
    pi_institution: Norwegian Polar Institute
    Created: 2021-02-23T13:46:11
    Modified: 2021-08-12T10:10:06
    History: 2021-02-23T13:46:11Z: Initial read in of the log files. 2021-08-12T10:10:06Z: Standardising PI email and institutions
    Event remarks: Samples labeled as AT800
    Source document: AeN_MSC1+A-TWAIN_2019710_2019_SampleLog_28112019.xlsx
    statID: 345
    end_date: 2019-11-19 00:00:00
    start_date: 2019-11-19 00:00:00
  • MSC1 + A-TWAIN

    Event ID: fd1d1f52-0ded-11ea-a5f2-000c29fb4a96
    Parent Event ID: b3969c99-1011-11ea-a5f2-000c29fb4a96
    Event date: 2019-11-19T06:58:00
    Station: 345 (2019 Mooring Service/A-Twain)
    Location: 81° 32' 56" N , 30° 52' 15" E
    Cruise number: 2019710
    Cruise name: 2019 Mooring Service/A-Twain
    Bottle number: 1
    Sampletype: Chlorophyll a tot
    Gear type: CTD w/bottles
    Sample depth (m): 891.64
    Bottom depth (m): 880.62
    Person of Interest
    Name: Marit Reigstad
    Email: marit.reigstad@uit.no
    Institution: University of Tromsø
    Show more metadata

    MSC1 + A-TWAIN

    pi_name: Arild Sundfjord

    Abstract

    Joint cruise between Nansen Legacy and A-TWAIN/SIOS-InfraNor. Mostly recovery and deployment of moorings, CTD stations and transesects, VM- and L-ADCP transects. Some water sampling for BGC analysis. Glider deployment.


    pi_email: arild.sundfjord@npolar.no
    projectID: RCN # 276730
    pi_address: Fram Centre, 9296 Tromsø, Norway
    recordedBy: Arild Sundfjord; Angelika H. H. Renner; Kristine Cerbule; Kristen Fossan; Ceslav Czyz; Øyvind Lundesgaard; Terje Hovland; Marcos Porcires; Kjersti Kalhagen
    pi_institution: Norwegian Polar Institute
    Created: 2021-02-23T13:46:11
    Modified: 2021-08-12T10:10:06
    History: 2021-02-23T13:46:11Z: Initial read in of the log files. 2021-08-12T10:10:06Z: Standardising PI email and institutions
    Event remarks: Samples labeled as AT800
    Source document: AeN_MSC1+A-TWAIN_2019710_2019_SampleLog_28112019.xlsx
    statID: 345
    end_date: 2019-11-19 00:00:00
    start_date: 2019-11-19 00:00:00
  • MSC1 + A-TWAIN

    Event ID: e5fb9be6-0ded-11ea-a5f2-000c29fb4a96
    Parent Event ID: b3969c99-1011-11ea-a5f2-000c29fb4a96
    Event date: 2019-11-19T06:58:00
    Station: 345 (2019 Mooring Service/A-Twain)
    Location: 81° 32' 56" N , 30° 52' 15" E
    Cruise number: 2019710
    Cruise name: 2019 Mooring Service/A-Twain
    Bottle number: 1
    Sampletype: POC/PON
    Gear type: CTD w/bottles
    Sample depth (m): 891.64
    Bottom depth (m): 880.62
    Person of Interest
    Name: Marit Reigstad
    Email: marit.reigstad@uit.no
    Institution: University of Tromsø
    Show more metadata

    MSC1 + A-TWAIN

    pi_name: Arild Sundfjord

    Abstract

    Joint cruise between Nansen Legacy and A-TWAIN/SIOS-InfraNor. Mostly recovery and deployment of moorings, CTD stations and transesects, VM- and L-ADCP transects. Some water sampling for BGC analysis. Glider deployment.


    pi_email: arild.sundfjord@npolar.no
    projectID: RCN # 276730
    pi_address: Fram Centre, 9296 Tromsø, Norway
    recordedBy: Arild Sundfjord; Angelika H. H. Renner; Kristine Cerbule; Kristen Fossan; Ceslav Czyz; Øyvind Lundesgaard; Terje Hovland; Marcos Porcires; Kjersti Kalhagen
    pi_institution: Norwegian Polar Institute
    Created: 2021-02-23T13:46:11
    Modified: 2021-08-12T10:10:06
    History: 2021-02-23T13:46:11Z: Initial read in of the log files. 2021-08-12T10:10:06Z: Standardising PI email and institutions
    Event remarks: Samples labeled as AT800
    Source document: AeN_MSC1+A-TWAIN_2019710_2019_SampleLog_28112019.xlsx
    statID: 345
    end_date: 2019-11-19 00:00:00
    start_date: 2019-11-19 00:00:00

NLEG24

  • Carbonate chemistry, inorganic nutrients and oxygen isotopes in seawater and sea ice

    Event ID: f707d64e-e71b-11eb-a4d0-fb7ecc325611
    Parent Event ID: 29c59257-e4c6-11eb-ae89-005056a2bfc1
    Event date: 2021-07-23T17:06:18
    Station: NLEG24
    Location: 81° 40' 44" N , 30° 30' 55" E
    Cruise number: 2021708
    Cruise name: 2021 Joint Cruise 2-1
    Bottle number: 7
    Sampletype: DO
    Sampling protocol: Nansen Legacy sampling protocols version 7
    Gear type: CTD w/bottles
    Sample depth (m): 899.31
    Bottom depth (m): 2,783.55
    Person of Interest
    Name: Melissa Chierici, Agneta Fransson
    Email: melissa.chierici@hi.no, agneta.fransson@npolar.no
    Institution: Institute of Marine Research, Norwegian Polar Institute
    Show more metadata

    Carbonate chemistry, inorganic nutrients and oxygen isotopes in seawater and sea ice

    pi_name: Melissa Chierici; Agneta Fransson

    Abstract

    Overview of samples taken from seawater and sea ice. Following Nansen Sampling protocol V8.


    pi_email: melissa.chierici@hi.no; agneta.fransson@npolar.no
    projectID: The Nansen Legacy (RCN # 276730)
    pi_address: IMR, Tromsø, Norway; NPI, Tromsø, Norway
    recordedBy: Helene Lødemel
    pi_institution: Institute of Marine Research; Norwegian Polar Institute
    Created: 2021-08-13T06:55:51
    Modified: 2021-08-27T12:35:20
    History: 2021-08-13T06:55:51Z: Initial read in of the log files. 2021-08-27T12:35:20Z: Updating metadata sheet and adding second PI
    Source document: AeN_2021708_CTD_Helene_LMedits_CorrectNiskins_metadata.xlsx
    statID: 346
    end_date: 2021-07-23 00:00:00
    end_time: 19:32:58.079000
    start_date: 2021-07-23 00:00:00
    vesselName: Kronprins Haakon
    endDecimalLatitude: 81.6698533333333
    endDecimalLongitude: 30.4935723666667
    maximumDepthInMeters: 2778
    minimumDepthInMeters: 5

P6 (NLEG21/NPAL15)

  • Q3 Gear casts

    Event ID: ef09b2c6-b5ec-11e9-acd1-a0481c9e7d26
    Event date: 2019-08-18T06:33:00
    Station: P6 (NLEG21/NPAL15)
    Location: 81° 32' 58" N , 31° 9' 38" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Gear type: CTD w/bottles
    Sample depth (m): 831.00
    Bottom depth (m): 834.68
    Person of Interest
    Name: Marit Reigstad
    Email: marit.reigstad@uit.no
    Institution: University of Tromsø
    Show more metadata

    Q3 Gear casts

    pi_name: Marit Reigstad

    Abstract

    The RV Kronprins Haakon cruise Nansen Legacy seasonal Q3 (Q3= 3rd quarter of the year), initiated the seasonal investigation of the northern Barents Sea and adjacent Arctic Basin. This activity is a key milestone for 2019 and 2020. The cruise addressed objectives of the research foci in RF1 on Physical drivers, RF2 on Human drivers and RF3 on the living Barents Sea, and collected necessary data along the Nansen Legacy transect in open waters and within the ice. Experiments were an important component of the research to quantify processes, rates and interactions that will also feed modeling work and projections in RF4. The ongoing establishment of routines for sampling, data management and data storing continued as part of the practical work onboard. The observational capacity was increased also outside the cruise periods, through deployment of 2 gliders for RF1, and 3 moorings in collaboration with RF1/2/3.


    pi_email: marit.reigstad@uit.no
    projectID: RCN # 276730
    pi_address: Institute of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics
    recordedBy: Tove M. Gabrielsen
    pi_institution: UiT - The Arctic University of Norway
    Created: 2020-05-06T13:41:12
    Modified: 2021-08-12T10:10:06
    History: 2020-05-06T13:41:12Z: Initial read in of the log files. 2021-08-12T10:10:06Z: Standardising PI email and institutions
    Event remarks: With LADCP; Model WHS300-I-UG502; SN 24474 & SN 24472
    Source document: Q3_GearID_with_metadata.xlsx
    statID: 182
    dataFilename: Sta0182
    serialNumber: See data file for instrument serial numbers. Note change og temperature sensor before cast 192.

    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
    96951644-c0e6-11e9-8f49-000c29fb4a96 2019-08-18T06:33:00Z 2019706 834.68 831.00 P6 (NLEG21/NPAL15) CTD w/bottles Rolf Gradinger University of Tromsø
    adbca18e-c0e6-11e9-8f49-000c29fb4a96 2019-08-18T06:33:00Z 2019706 834.68 831.00 P6 (NLEG21/NPAL15) CTD w/bottles Rolf Gradinger University of Tromsø
    85ebb475-b5ef-11e9-acd1-a0481c9e7d26 2019-08-18T06:33:00Z 2019706 1 834.68 831.00 P6 (NLEG21/NPAL15) CTD w/bottles Marit Reigstad University of Tromsø
    53a20edc-c0e6-11e9-8f49-000c29fb4a96 2019-08-18T06:33:00Z 2019706 834.68 831.00 P6 (NLEG21/NPAL15) CTD w/bottles Rolf Gradinger University of Tromsø
    95a0e024-c0e6-11e9-8f49-000c29fb4a96 2019-08-18T06:33:00Z 2019706 834.68 831.00 P6 (NLEG21/NPAL15) CTD w/bottles Rolf Gradinger University of Tromsø
    aecf6688-c0e6-11e9-8f49-000c29fb4a96 2019-08-18T06:33:00Z 2019706 834.68 831.00 P6 (NLEG21/NPAL15) CTD w/bottles Rolf Gradinger University of Tromsø
    85ebb487-b5ef-11e9-acd1-a0481c9e7d26 2019-08-18T06:33:00Z 2019706 10 834.68 831.00 P6 (NLEG21/NPAL15) CTD w/bottles Marit Reigstad University of Tromsø
    85ebb485-b5ef-11e9-acd1-a0481c9e7d26 2019-08-18T06:33:00Z 2019706 9 834.68 831.00 P6 (NLEG21/NPAL15) CTD w/bottles Marit Reigstad University of Tromsø
    85ebb483-b5ef-11e9-acd1-a0481c9e7d26 2019-08-18T06:33:00Z 2019706 8 834.68 831.00 P6 (NLEG21/NPAL15) CTD w/bottles Marit Reigstad University of Tromsø
    85ebb481-b5ef-11e9-acd1-a0481c9e7d26 2019-08-18T06:33:00Z 2019706 7 834.68 831.00 P6 (NLEG21/NPAL15) CTD w/bottles Marit Reigstad University of Tromsø
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: 4d2c9450-c0e6-11e9-8f49-000c29fb4a96
    Parent Event ID: 85ebb48c-b5ef-11e9-acd1-a0481c9e7d26
    Event date: 2019-08-18T06:33:00
    Station: P6 (NLEG21/NPAL15)
    Location: 81° 32' 58" N , 31° 9' 38" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Bottle number: 24
    Sampletype: Isotopes
    Sampling protocol: N uptake to be included in version 5
    Gear type: CTD w/bottles
    Sample depth (m): 831.00
    Bottom depth (m): 834.68
    Person of Interest
    Name: Rolf Gradinger
    Email: rolf.gradinger@uit.no
    Institution: University of Tromsø
    Show more metadata

    Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    pi_name: Rolf Gradinger

    Abstract

    Several functional aspects of pelagic and simpagic primary producers were studied during the Nansen Legacy Q3 cruise. In open water stations (P1, P4, P5), water was sampled from the standard depths 10, 20, 40, 60, 90 and Chl a max. Water from these depths was spiked with radioactively labelled carbon in order to determine to the Carbon fixation rate (i.e. the Primary Production rate) of phototrophic organisms throughout the water column and latitudinal gradient. Additionally, water from 10m and Chla max was spiked with stable isotopes of Carbon (13C) and Nitrogen (15N) to determine the F-ratio (which fraction of the estimated primary production is new production). One incubation bottle was also treated to assess the nitrification activity of microbes. These incubations were deployed attached to the sediment trap moorings and exposed to in situ light and temperature conditions for 24 hours. In parallel, water from the Chla max was used to determine the photosynthetic response of the community to light intensity (P vs I curves). At the ice-covered stations (P6 and P7), the aforementioned water sampling and experimental work was carried as described, and additionally the bottom 3cm of 4 ice cores were sampled and pooled for similar in situ incubations: Under-ice Primary production, Nitrogen uptake and PvsI curve. Water from a meltpond was sampled, spiked and incubated in situ for Primary Production and Nitrogen uptake. A reciprocal transplant experiment was conducted with surface water from stations P1 and P6 and will be analyzed for abundance and community shifts due to changes in environmental factors.


    pi_email: rolf.gradinger@uit.no
    projectID: RCN #276730
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2020-05-06T13:42:25
    Modified: 2021-08-12T12:31:54
    History: 2020-05-06T13:42:25Z: Initial read in of the log files. 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: SI Natural abundances
    Source document: AeN_Q3_Marti_Logsheet.xlsx
    statID: 182
    intendedMethod: N uptake
    sampleVolumeInMilliliters: 1000
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: e7d3c272-c0e5-11e9-8f49-000c29fb4a96
    Parent Event ID: 85ebb48c-b5ef-11e9-acd1-a0481c9e7d26
    Event date: 2019-08-18T06:33:00
    Station: P6 (NLEG21/NPAL15)
    Location: 81° 32' 58" N , 31° 9' 38" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Bottle number: 24
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.22
    Gear type: CTD w/bottles
    Sample depth (m): 831.00
    Bottom depth (m): 834.68
    Person of Interest
    Name: Rolf Gradinger
    Email: rolf.gradinger@uit.no
    Institution: University of Tromsø
    Show more metadata

    Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    pi_name: Rolf Gradinger

    Abstract

    Several functional aspects of pelagic and simpagic primary producers were studied during the Nansen Legacy Q3 cruise. In open water stations (P1, P4, P5), water was sampled from the standard depths 10, 20, 40, 60, 90 and Chl a max. Water from these depths was spiked with radioactively labelled carbon in order to determine to the Carbon fixation rate (i.e. the Primary Production rate) of phototrophic organisms throughout the water column and latitudinal gradient. Additionally, water from 10m and Chla max was spiked with stable isotopes of Carbon (13C) and Nitrogen (15N) to determine the F-ratio (which fraction of the estimated primary production is new production). One incubation bottle was also treated to assess the nitrification activity of microbes. These incubations were deployed attached to the sediment trap moorings and exposed to in situ light and temperature conditions for 24 hours. In parallel, water from the Chla max was used to determine the photosynthetic response of the community to light intensity (P vs I curves). At the ice-covered stations (P6 and P7), the aforementioned water sampling and experimental work was carried as described, and additionally the bottom 3cm of 4 ice cores were sampled and pooled for similar in situ incubations: Under-ice Primary production, Nitrogen uptake and PvsI curve. Water from a meltpond was sampled, spiked and incubated in situ for Primary Production and Nitrogen uptake. A reciprocal transplant experiment was conducted with surface water from stations P1 and P6 and will be analyzed for abundance and community shifts due to changes in environmental factors.


    pi_email: rolf.gradinger@uit.no
    projectID: RCN #276730
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2020-05-06T13:42:25
    Modified: 2021-08-12T12:31:54
    History: 2020-05-06T13:42:25Z: Initial read in of the log files. 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: Total carbon (t0) sample
    Source document: AeN_Q3_Marti_Logsheet.xlsx
    statID: 182
    intendedMethod: C14 incubations
    sampleVolumeInMilliliters: 0.1
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: e28aaf6a-c0e5-11e9-8f49-000c29fb4a96
    Parent Event ID: 85ebb48c-b5ef-11e9-acd1-a0481c9e7d26
    Event date: 2019-08-18T06:33:00
    Station: P6 (NLEG21/NPAL15)
    Location: 81° 32' 58" N , 31° 9' 38" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Bottle number: 24
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.22
    Gear type: CTD w/bottles
    Sample depth (m): 831.00
    Bottom depth (m): 834.68
    Person of Interest
    Name: Rolf Gradinger
    Email: rolf.gradinger@uit.no
    Institution: University of Tromsø
    Show more metadata

    Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    pi_name: Rolf Gradinger

    Abstract

    Several functional aspects of pelagic and simpagic primary producers were studied during the Nansen Legacy Q3 cruise. In open water stations (P1, P4, P5), water was sampled from the standard depths 10, 20, 40, 60, 90 and Chl a max. Water from these depths was spiked with radioactively labelled carbon in order to determine to the Carbon fixation rate (i.e. the Primary Production rate) of phototrophic organisms throughout the water column and latitudinal gradient. Additionally, water from 10m and Chla max was spiked with stable isotopes of Carbon (13C) and Nitrogen (15N) to determine the F-ratio (which fraction of the estimated primary production is new production). One incubation bottle was also treated to assess the nitrification activity of microbes. These incubations were deployed attached to the sediment trap moorings and exposed to in situ light and temperature conditions for 24 hours. In parallel, water from the Chla max was used to determine the photosynthetic response of the community to light intensity (P vs I curves). At the ice-covered stations (P6 and P7), the aforementioned water sampling and experimental work was carried as described, and additionally the bottom 3cm of 4 ice cores were sampled and pooled for similar in situ incubations: Under-ice Primary production, Nitrogen uptake and PvsI curve. Water from a meltpond was sampled, spiked and incubated in situ for Primary Production and Nitrogen uptake. A reciprocal transplant experiment was conducted with surface water from stations P1 and P6 and will be analyzed for abundance and community shifts due to changes in environmental factors.


    pi_email: rolf.gradinger@uit.no
    projectID: RCN #276730
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2020-05-06T13:42:25
    Modified: 2021-08-12T12:31:54
    History: 2020-05-06T13:42:25Z: Initial read in of the log files. 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: Total carbon (t0) sample
    Source document: AeN_Q3_Marti_Logsheet.xlsx
    statID: 182
    intendedMethod: C14 incubations
    sampleVolumeInMilliliters: 0.1
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: 841f2c16-c0e6-11e9-8f49-000c29fb4a96
    Parent Event ID: 85ebb48c-b5ef-11e9-acd1-a0481c9e7d26
    Event date: 2019-08-18T06:33:00
    Station: P6 (NLEG21/NPAL15)
    Location: 81° 32' 58" N , 31° 9' 38" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Bottle number: 24
    Sampletype: Isotopes
    Sampling protocol: N uptake to be included in version 5
    Gear type: CTD w/bottles
    Sample depth (m): 831.00
    Bottom depth (m): 834.68
    Person of Interest
    Name: Rolf Gradinger
    Email: rolf.gradinger@uit.no
    Institution: University of Tromsø
    Show more metadata

    Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    pi_name: Rolf Gradinger

    Abstract

    Several functional aspects of pelagic and simpagic primary producers were studied during the Nansen Legacy Q3 cruise. In open water stations (P1, P4, P5), water was sampled from the standard depths 10, 20, 40, 60, 90 and Chl a max. Water from these depths was spiked with radioactively labelled carbon in order to determine to the Carbon fixation rate (i.e. the Primary Production rate) of phototrophic organisms throughout the water column and latitudinal gradient. Additionally, water from 10m and Chla max was spiked with stable isotopes of Carbon (13C) and Nitrogen (15N) to determine the F-ratio (which fraction of the estimated primary production is new production). One incubation bottle was also treated to assess the nitrification activity of microbes. These incubations were deployed attached to the sediment trap moorings and exposed to in situ light and temperature conditions for 24 hours. In parallel, water from the Chla max was used to determine the photosynthetic response of the community to light intensity (P vs I curves). At the ice-covered stations (P6 and P7), the aforementioned water sampling and experimental work was carried as described, and additionally the bottom 3cm of 4 ice cores were sampled and pooled for similar in situ incubations: Under-ice Primary production, Nitrogen uptake and PvsI curve. Water from a meltpond was sampled, spiked and incubated in situ for Primary Production and Nitrogen uptake. A reciprocal transplant experiment was conducted with surface water from stations P1 and P6 and will be analyzed for abundance and community shifts due to changes in environmental factors.


    pi_email: rolf.gradinger@uit.no
    projectID: RCN #276730
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2020-05-06T13:42:25
    Modified: 2021-08-12T12:31:54
    History: 2020-05-06T13:42:25Z: Initial read in of the log files. 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: Enriched Dark Nitrate
    Source document: AeN_Q3_Marti_Logsheet.xlsx
    statID: 182
    intendedMethod: N uptake
    sampleVolumeInMilliliters: 250

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Cruise name

  • 2021 Seasonal Study Q2
  • 2021 Seasonal Study Q1
  • 2021 Joint Cruise 2-1
  • 2021 A-Twain
  • 2019 Seasonal Study Q4
  • 2019 Seasonal Study Q3
  • 2019 Mooring Service/A-Twain

Gear Type

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Sample type

  • Niskin Bottle (75)
  • Microbial abundance (70)
  • Nutrients (57)
  • Macrofauna taxonomy (42)
  • Primary production (14C-CO2) (39)
  • Meiofauna abundance (38)
  • Sediment pigments (24)
  • Isotopes (22)
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  • Grain size (18)
  • Sediment slice (16)
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  • Microbial diversity (DNA and RNA) (12)
  • Electron microscopy (SEM filter) (10)
  • Chlorophyll a tot (8)
  • Dissolved Organic Carbon (6)
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  • Total organic carbon (6)
  • Chlorophyll a > 10 um (5)
  • DO (5)
  • Viral diversity (FeCl3) (5)
  • AT/DIC/pH (4)
  • Small meiofauna diet (4)
  • d18O (3)
  • HBI (3)
  • HPLC Pigments (3)
  • Methylmercury (3)
  • Organic matter characterization (3)
  • Stable isotopes (3)
  • CDOM (1)
  • Protist abundance and taxonomy (1)

Sample depth (m)

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  • (-) 800 - 900

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