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  • Home
  • Station name: P6 (NLEG21/NPAL15) Ice
  • 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) Ice

Person of interest

  • Gunnar Bratbak (310)
  • Marit Reigstad (244)
  • Rolf Gradinger (219)
  • Miriam Marquardt (213)
  • Anna Vader (178)
  • Philipp Assmy (153)
  • Oliver Müller (143)
  • Bente Edvardsen (127)
  • Yasemin Bodur (113)
  • Murat Van Ardelan (112)
  • Elizabeth Jones (87)
  • Geir Johnsen (60)
  • Agneta Fransson (54)
  • Melissa Chierici (54)
  • Haakon Hop (44)
  • Aud Larsen (42)
  • Jorun Egge (39)
  • Tatiana Tsagaraki (39)
  • Arild Sundfjord (12)
  • Martin Ludvigsen (5)
  • Bodil Bluhm (4)
  • Ruth-Anne Sandaa (3)
  • Nicole Aberle-Malzahn (2)
  • Lasse Olsen (1)
  • Sebastian Gerland (1)

Institution

  • University of Tromsø
  • University of Bergen
  • Norwegian Polar Institute
  • Norwegian University of Science and Technology
  • University Centre in Svalbard
  • Institute of Marine Research
  • University of Oslo
Displaying 1 - 10 of 1626

P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3)

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

    Event ID: dab96eac-c1e4-11e9-8f49-000c29fb4a96
    Parent Event ID: 78b4c836-c663-11e9-8f49-000c29fb4a96
    Event date: 2019-08-17T16:30:00
    Station: P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3)
    Location: 81° 31' 58" N , 30° 58' 6" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: N uptake to be included in version 5
    Gear type: CTD w/bottles
    Bottom depth (m): 797.07
    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: Meltpond Chla 1
    Source document: AeN_Q3_Marti_Logsheet.xlsx
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: e25cbd6a-c0e7-11e9-8f49-000c29fb4a96
    Parent Event ID: 78b4c836-c663-11e9-8f49-000c29fb4a96
    Event date: 2019-08-17T16:30:00
    Station: P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3)
    Location: 81° 31' 58" N , 30° 58' 6" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Sampletype: Isotopes
    Sampling protocol: N uptake to be included in version 5
    Gear type: CTD w/bottles
    Bottom depth (m): 797.07
    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: Meltpond Isotopes 2
    Source document: AeN_Q3_Marti_Logsheet.xlsx
    intendedMethod: N uptake
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: e1501ae8-c0e7-11e9-8f49-000c29fb4a96
    Parent Event ID: 78b4c836-c663-11e9-8f49-000c29fb4a96
    Event date: 2019-08-17T16:30:00
    Station: P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3)
    Location: 81° 31' 58" N , 30° 58' 6" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Sampletype: Isotopes
    Sampling protocol: N uptake to be included in version 5
    Gear type: CTD w/bottles
    Bottom depth (m): 797.07
    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: Meltpond Isotopes 1
    Source document: AeN_Q3_Marti_Logsheet.xlsx
    intendedMethod: N uptake
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: c9bbe632-c0e7-11e9-8f49-000c29fb4a96
    Parent Event ID: 78b4c836-c663-11e9-8f49-000c29fb4a96
    Event date: 2019-08-17T16:30:00
    Station: P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3)
    Location: 81° 31' 58" N , 30° 58' 6" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Sampletype: Isotopes
    Sampling protocol: N uptake to be included in version 5
    Gear type: CTD w/bottles
    Bottom depth (m): 797.07
    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: Meltpond Light Nitrate 1
    Source document: AeN_Q3_Marti_Logsheet.xlsx
    intendedMethod: N uptake
  • Biology sea-ice samples

    Event ID: 3c3e47e8-8916-11e9-8a84-a0481c9e7d26
    Parent Event ID: ef09b2f0-b5ec-11e9-acd1-a0481c9e7d26
    Event date: 2019-08-17T16:30:00
    Station: P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3)
    Location: 81° 31' 58" N , 30° 58' 6" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Sampletype: Ice core
    Sampling protocol: AeN protocols version 4_section14
    Bottom depth (m): 797.07
    Person of Interest
    Show more metadata

    Biology sea-ice samples

    pi_name: Anna Vader

    Abstract

    Overview of samples taken from ice, including ice-cores, under-ice water (UIW) and meltponds


    pi_email: annav@unis.no
    projectID: The Nansen Legacy (RCN # 276730)
    pi_address: Forskningsparken, 9170 Longyearbyen
    recordedBy: Anna Vader, Miriam Marquardt,
    pi_institution: UNIS
    Created: 2020-05-06T13:42:30
    Modified: 2020-05-06T13:42:30
    History: 2020-05-06T13:42:30Z: Initial read in of the log files.
    Source document: AeN_2019706_icesamples_all_AnnaVader260819.xlsx
  • Biology sea-ice samples

    Event ID: 3c3e480b-8916-11e9-8a84-a0481c9e7d26
    Parent Event ID: ef09b2f0-b5ec-11e9-acd1-a0481c9e7d26
    Event date: 2019-08-17T16:30:00
    Station: P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3)
    Location: 81° 31' 58" N , 30° 58' 6" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Sampletype: Protist diversity >10 um
    Sampling protocol: AeN protocols version 4_section14
    Bottom depth (m): 797.07
    Person of Interest
    Show more metadata

    Biology sea-ice samples

    pi_name: Anna Vader

    Abstract

    Overview of samples taken from ice, including ice-cores, under-ice water (UIW) and meltponds


    pi_email: annav@unis.no
    projectID: The Nansen Legacy (RCN # 276730)
    pi_address: Forskningsparken, 9170 Longyearbyen
    recordedBy: Anna Vader, Miriam Marquardt,
    pi_institution: UNIS
    Created: 2020-05-06T13:42:30
    Modified: 2020-05-06T13:42:30
    History: 2020-05-06T13:42:30Z: Initial read in of the log files.
    Source document: AeN_2019706_icesamples_all_AnnaVader260819.xlsx

    Child events

    Event ID Event datetime Cruise number Bottle number Bottom depth (m) Sample depth (m) Station name ref Gear Type PI Name PI Institution
    f3f51bcc-c118-11e9-8f49-000c29fb4a96 2019-08-17T16:30:00Z 2019706 797.07 P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3) Bente Edvardsen University of Oslo
    0e1f29b6-c119-11e9-8f49-000c29fb4a96 2019-08-17T16:30:00Z 2019706 797.07 P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3) Bente Edvardsen University of Oslo
    eebf9574-c118-11e9-8f49-000c29fb4a96 2019-08-17T16:30:00Z 2019706 797.07 P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3) Bente Edvardsen University of Oslo
    e99d9b68-c118-11e9-8f49-000c29fb4a96 2019-08-17T16:30:00Z 2019706 797.07 P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3) Bente Edvardsen University of Oslo
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: c0f37908-c0e6-11e9-8f49-000c29fb4a96
    Parent Event ID: 3c3e47d7-8916-11e9-8a84-a0481c9e7d26
    Event date: 2019-08-17T16:30:00
    Station: P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3)
    Location: 81° 31' 58" N , 30° 58' 6" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.23
    Gear type: CTD w/bottles
    Bottom depth (m): 797.07
    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: Pvs I Under ice
    Source document: AeN_Q3_Marti_Logsheet.xlsx
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: bfa750e2-c0e6-11e9-8f49-000c29fb4a96
    Parent Event ID: 3c3e47d7-8916-11e9-8a84-a0481c9e7d26
    Event date: 2019-08-17T16:30:00
    Station: P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3)
    Location: 81° 31' 58" N , 30° 58' 6" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.23
    Gear type: CTD w/bottles
    Bottom depth (m): 797.07
    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: Pvs I Under ice
    Source document: AeN_Q3_Marti_Logsheet.xlsx
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: bd1da6d2-c0e6-11e9-8f49-000c29fb4a96
    Parent Event ID: 3c3e47d7-8916-11e9-8a84-a0481c9e7d26
    Event date: 2019-08-17T16:30:00
    Station: P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3)
    Location: 81° 31' 58" N , 30° 58' 6" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.23
    Gear type: CTD w/bottles
    Bottom depth (m): 797.07
    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: Pvs I Under ice
    Source document: AeN_Q3_Marti_Logsheet.xlsx
  • Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity

    Event ID: ea2b9062-c0e6-11e9-8f49-000c29fb4a96
    Parent Event ID: 3c3e47d7-8916-11e9-8a84-a0481c9e7d26
    Event date: 2019-08-17T16:30:00
    Station: P6 (NLEG21/NPAL15) Ice (2019 Seasonal Study Q3)
    Location: 81° 31' 58" N , 30° 58' 6" E
    Cruise number: 2019706
    Cruise name: 2019 Seasonal Study Q3
    Sampletype: Primary production (14C-CO2)
    Sampling protocol: 7.23
    Bottom depth (m): 797.07
    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: Pvs I Under ice
    Source document: AeN_Q3_Marti_Logsheet.xlsx

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Cruise name

  • 2021 Seasonal Study Q2
  • 2021 Seasonal Study Q1
  • 2021 Joint Cruise 2-1
  • 2019 Seasonal Study Q3

Gear Type

  • Ice corer 9 cm
  • Sediment trap (short term)
  • CTD w/bottles
  • Bucket
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  • Bottle 1L
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  • Phytoplankton net 10 um
  • 500 ml bottle
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  • CTD
  • Filtration Pump

Sample type

  • Ice core (273)
  • Primary production (14C-CO2) (121)
  • Bacterial production (120)
  • Protist abundance and taxonomy (115)
  • Microbial abundance (102)
  • POC/PON (90)
  • Chlorophyll a tot (72)
  • Microbial diversity (DNA and RNA) (67)
  • Nutrients (59)
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  • AT/DIC/pH (18)
  • d18O (18)
  • Meiofauna abundance (12)
  • Meiofauna taxonomy (12)
  • Melt pond (11)
  • HBI (10)
  • Organic matter characterization (10)
  • Mesozooplankton taxonomy (9)
  • DNA (8)
  • Fecal pellet flux (7)
  • Protist diversity <10 um (6)
  • Sediment trap (6)
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  • Viral diversity (FeCl3) (3)
  • CTD (2)
  • Dilution culture (2)
  • Under ice water (2)
  • Brine (1)
  • Single cell isolate (1)

Sample depth (m)

  • 0 - 100
  • 100 - 200
  • 200 - 300

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