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Breadcrumb

  • Home
  • Sample type: Primary production (14C-CO2)
  • 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

  • P1 (NLEG01)
  • P4 (NLEG11)
  • P6 (NLEG21/NPAL15)
  • P7 (NLEG25/NPAL16)
  • P7 (NLEG25/NPAL16) Ice
  • P5 (NLEG13)
  • P6 (NLEG21/NPAL15) Ice
  • P11 (NLEG38)
  • P9 (NLEG33) Ice
  • P8 (NLEG29) Ice
  • P2 (NLEG04)
  • P4 (NLEG11) Ice
  • P10 (NLEG36) Ice
  • P8 (NLEG29)
  • P9 (NLEG33)
  • P10 (NLEG36)
  • P3 (NLEG07)
  • P5 (NLEG13) Ice
  • SIce Kvitøyrenna

Person of interest

  • Rolf Gradinger (1868)
  • Martí Amargant Arumi (90)
  • Philipp Assmy (90)
  • Miriam Marquardt (3)

Institution

  • University of Tromsø
  • Norwegian Polar Institute
Displaying 1 - 10 of 1871

P1 (NLEG01)

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

    Event ID: da358bf4-b68a-11eb-ae89-005056a2bfc1
    Parent Event ID: d920c050-aa2b-11eb-99c1-db430a2581b4
    Event date: 2021-05-01T03:18:06
    Station: P1 (NLEG01)
    Location: 76° 0' 1" N , 31° 13' 17" E
    Cruise number: 2021704
    Cruise name: 2021 Seasonal Study Q2
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.22
    Gear type: Box core
    Bottom depth (m): 325.61
    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: The Nansen Legacy (RCN # 276730)
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2021-05-26T10:51:29
    Modified: 2021-08-12T12:31:54
    History: 2021-05-26T10:51:29Z: Initial read in of the log files. 2021-05-31T09:30:27Z: Updating station names 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: P1 t-24 1
    Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
    statID: 1
    end_date: 2021-05-01 00:00:00
    end_time: 03:47:21.934000
    start_date: 2021-05-01 00:00:00
    vesselName: Kronprins Haakon
    stationName: P1
    endDecimalLatitude: 76.0003766833333
    endDecimalLongitude: 31.2215123333333
    maximumDepthInMeters: 325
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: 85316e36-a9e0-11eb-ae89-005056a2bfc1
    Parent Event ID: d920c050-aa2b-11eb-99c1-db430a2581b4
    Event date: 2021-05-01T03:18:06
    Station: P1 (NLEG01)
    Location: 76° 0' 1" N , 31° 13' 17" E
    Cruise number: 2021704
    Cruise name: 2021 Seasonal Study Q2
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.22
    Gear type: Box core
    Bottom depth (m): 325.61
    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: The Nansen Legacy (RCN # 276730)
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2021-05-26T10:51:28
    Modified: 2021-08-12T12:31:54
    History: 2021-05-26T10:51:28Z: Initial read in of the log files. 2021-05-31T09:30:26Z: Updating station names 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: Spores
    Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
    statID: 1
    end_date: 2021-05-01 00:00:00
    end_time: 03:47:21.934000
    start_date: 2021-05-01 00:00:00
    vesselName: Kronprins Haakon
    stationName: P1
    endDecimalLatitude: 76.0003766833333
    endDecimalLongitude: 31.2215123333333
    maximumDepthInMeters: 325
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: 257e0dd3-a8f3-11eb-ae89-005056a2bfc1
    Parent Event ID: 7496ccc9-a7eb-11eb-ae89-005056a2bfc1
    Event date: 2021-04-30T10:18:57
    Station: P1 (NLEG01)
    Location: 76° 0' 0" N , 31° 13' 12" E
    Cruise number: 2021704
    Cruise name: 2021 Seasonal Study Q2
    Bottle number: 19
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.23
    Gear type: CTD w/bottles
    Sample depth (m): 20.05
    Bottom depth (m): 325.95
    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: The Nansen Legacy (RCN # 276730)
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2021-05-26T10:51:28
    Modified: 2021-08-12T12:31:54
    History: 2021-05-26T10:51:28Z: Initial read in of the log files. 2021-05-31T09:30:26Z: Updating station names 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: P vs I after incubation 10
    Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
    statID: 1
    end_date: 2021-04-30 00:00:00
    end_time: 10:42:46.926000
    start_date: 2021-04-30 00:00:00
    vesselName: Kronprins Haakon
    stationName: P1
    intendedMethod: P vs I curves
    endDecimalLatitude: 76.0000182
    endDecimalLongitude: 31.2199095166667
    maximumDepthInMeters: 315
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: 1f1ad85a-a8f3-11eb-ae89-005056a2bfc1
    Parent Event ID: 7496ccc9-a7eb-11eb-ae89-005056a2bfc1
    Event date: 2021-04-30T10:18:57
    Station: P1 (NLEG01)
    Location: 76° 0' 0" N , 31° 13' 12" E
    Cruise number: 2021704
    Cruise name: 2021 Seasonal Study Q2
    Bottle number: 19
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.23
    Gear type: CTD w/bottles
    Sample depth (m): 20.05
    Bottom depth (m): 325.95
    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: The Nansen Legacy (RCN # 276730)
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2021-05-26T10:51:28
    Modified: 2021-08-12T12:31:54
    History: 2021-05-26T10:51:28Z: Initial read in of the log files. 2021-05-31T09:30:26Z: Updating station names 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: P vs I Total carbon 2
    Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
    statID: 1
    end_date: 2021-04-30 00:00:00
    end_time: 10:42:46.926000
    start_date: 2021-04-30 00:00:00
    vesselName: Kronprins Haakon
    stationName: P1
    intendedMethod: P vs I curves
    endDecimalLatitude: 76.0000182
    endDecimalLongitude: 31.2199095166667
    maximumDepthInMeters: 315
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: 1807cc58-a8f3-11eb-ae89-005056a2bfc1
    Parent Event ID: 7496ccc9-a7eb-11eb-ae89-005056a2bfc1
    Event date: 2021-04-30T10:18:57
    Station: P1 (NLEG01)
    Location: 76° 0' 0" N , 31° 13' 12" E
    Cruise number: 2021704
    Cruise name: 2021 Seasonal Study Q2
    Bottle number: 19
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.23
    Gear type: CTD w/bottles
    Sample depth (m): 20.05
    Bottom depth (m): 325.95
    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: The Nansen Legacy (RCN # 276730)
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2021-05-26T10:51:28
    Modified: 2021-08-12T12:31:54
    History: 2021-05-26T10:51:28Z: Initial read in of the log files. 2021-05-31T09:30:26Z: Updating station names 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: P vs I Total carbon 1
    Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
    statID: 1
    end_date: 2021-04-30 00:00:00
    end_time: 10:42:46.926000
    start_date: 2021-04-30 00:00:00
    vesselName: Kronprins Haakon
    stationName: P1
    intendedMethod: P vs I curves
    endDecimalLatitude: 76.0000182
    endDecimalLongitude: 31.2199095166667
    maximumDepthInMeters: 315
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: 257e0dd2-a8f3-11eb-ae89-005056a2bfc1
    Parent Event ID: 7496ccc9-a7eb-11eb-ae89-005056a2bfc1
    Event date: 2021-04-30T10:18:57
    Station: P1 (NLEG01)
    Location: 76° 0' 0" N , 31° 13' 12" E
    Cruise number: 2021704
    Cruise name: 2021 Seasonal Study Q2
    Bottle number: 19
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.23
    Gear type: CTD w/bottles
    Sample depth (m): 20.05
    Bottom depth (m): 325.95
    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: The Nansen Legacy (RCN # 276730)
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2021-05-26T10:51:28
    Modified: 2021-08-12T12:31:54
    History: 2021-05-26T10:51:28Z: Initial read in of the log files. 2021-05-31T09:30:26Z: Updating station names 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: P vs I after incubation 9
    Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
    statID: 1
    end_date: 2021-04-30 00:00:00
    end_time: 10:42:46.926000
    start_date: 2021-04-30 00:00:00
    vesselName: Kronprins Haakon
    stationName: P1
    intendedMethod: P vs I curves
    endDecimalLatitude: 76.0000182
    endDecimalLongitude: 31.2199095166667
    maximumDepthInMeters: 315
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: 257e0dcf-a8f3-11eb-ae89-005056a2bfc1
    Parent Event ID: 7496ccc9-a7eb-11eb-ae89-005056a2bfc1
    Event date: 2021-04-30T10:18:57
    Station: P1 (NLEG01)
    Location: 76° 0' 0" N , 31° 13' 12" E
    Cruise number: 2021704
    Cruise name: 2021 Seasonal Study Q2
    Bottle number: 19
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.23
    Gear type: CTD w/bottles
    Sample depth (m): 20.05
    Bottom depth (m): 325.95
    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: The Nansen Legacy (RCN # 276730)
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2021-05-26T10:51:28
    Modified: 2021-08-12T12:31:54
    History: 2021-05-26T10:51:28Z: Initial read in of the log files. 2021-05-31T09:30:26Z: Updating station names 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: P vs I after incubation 6
    Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
    statID: 1
    end_date: 2021-04-30 00:00:00
    end_time: 10:42:46.926000
    start_date: 2021-04-30 00:00:00
    vesselName: Kronprins Haakon
    stationName: P1
    intendedMethod: P vs I curves
    endDecimalLatitude: 76.0000182
    endDecimalLongitude: 31.2199095166667
    maximumDepthInMeters: 315
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: 257e0dcb-a8f3-11eb-ae89-005056a2bfc1
    Parent Event ID: 7496ccc9-a7eb-11eb-ae89-005056a2bfc1
    Event date: 2021-04-30T10:18:57
    Station: P1 (NLEG01)
    Location: 76° 0' 0" N , 31° 13' 12" E
    Cruise number: 2021704
    Cruise name: 2021 Seasonal Study Q2
    Bottle number: 19
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.23
    Gear type: CTD w/bottles
    Sample depth (m): 20.05
    Bottom depth (m): 325.95
    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: The Nansen Legacy (RCN # 276730)
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2021-05-26T10:51:28
    Modified: 2021-08-12T12:31:54
    History: 2021-05-26T10:51:28Z: Initial read in of the log files. 2021-05-31T09:30:26Z: Updating station names 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: P vs I after incubation 2
    Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
    statID: 1
    end_date: 2021-04-30 00:00:00
    end_time: 10:42:46.926000
    start_date: 2021-04-30 00:00:00
    vesselName: Kronprins Haakon
    stationName: P1
    intendedMethod: P vs I curves
    endDecimalLatitude: 76.0000182
    endDecimalLongitude: 31.2199095166667
    maximumDepthInMeters: 315
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: 257e1dcb-a8f3-11eb-ae89-005056a2bfc1
    Parent Event ID: 7496ccc9-a7eb-11eb-ae89-005056a2bfc1
    Event date: 2021-04-30T10:18:57
    Station: P1 (NLEG01)
    Location: 76° 0' 0" N , 31° 13' 12" E
    Cruise number: 2021704
    Cruise name: 2021 Seasonal Study Q2
    Bottle number: 19
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.23
    Gear type: CTD w/bottles
    Sample depth (m): 20.05
    Bottom depth (m): 325.95
    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: The Nansen Legacy (RCN # 276730)
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2021-05-26T10:51:28
    Modified: 2021-08-12T12:31:54
    History: 2021-05-26T10:51:28Z: Initial read in of the log files. 2021-05-31T09:30:26Z: Updating station names 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: P vs I after incubation 3
    Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
    statID: 1
    end_date: 2021-04-30 00:00:00
    end_time: 10:42:46.926000
    start_date: 2021-04-30 00:00:00
    vesselName: Kronprins Haakon
    stationName: P1
    intendedMethod: P vs I curves
    endDecimalLatitude: 76.0000182
    endDecimalLongitude: 31.2199095166667
    maximumDepthInMeters: 315
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: 257e0dca-a8f3-11eb-ae89-005056a2bfc1
    Parent Event ID: 7496ccc9-a7eb-11eb-ae89-005056a2bfc1
    Event date: 2021-04-30T10:18:57
    Station: P1 (NLEG01)
    Location: 76° 0' 0" N , 31° 13' 12" E
    Cruise number: 2021704
    Cruise name: 2021 Seasonal Study Q2
    Bottle number: 19
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.23
    Gear type: CTD w/bottles
    Sample depth (m): 20.05
    Bottom depth (m): 325.95
    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: The Nansen Legacy (RCN # 276730)
    pi_address: Muninbakken 21, 9009 Tromsø
    recordedBy: Martí Amargant-Arumí
    pi_institution: UiT the Arctic University of Norway
    Created: 2021-05-26T10:51:28
    Modified: 2021-08-12T12:31:54
    History: 2021-05-26T10:51:28Z: Initial read in of the log files. 2021-05-31T09:30:26Z: Updating station names 2021-08-12T12:31:54Z: Standardising PI email and institutions
    Event remarks: P vs I after incubation 1
    Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
    statID: 1
    end_date: 2021-04-30 00:00:00
    end_time: 10:42:46.926000
    start_date: 2021-04-30 00:00:00
    vesselName: Kronprins Haakon
    stationName: P1
    intendedMethod: P vs I curves
    endDecimalLatitude: 76.0000182
    endDecimalLongitude: 31.2199095166667
    maximumDepthInMeters: 315

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Cruise name

  • 2022 JC3 Closing the Gaps’
  • 2021 Seasonal Study Q2
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  • 2021 Joint Cruise 2-2
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  • (-) Primary production (14C-CO2) (1871)

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