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Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity
Event ID: dd769555-0a4f-11ec-b81f-005056a2bfc1
Parent Event ID: c60ffc3c-063e-11ec-a0a0-cbdffd2fb05a
Event date: 2021-09-01T07:00:36
Station: P8 (NLEG29) Ice (2021 Joint Cruise 2-2)
Location: 83° 53' 58" N , 25° 24' 41" E
Cruise number: 2021710
Cruise name: 2021 Joint Cruise 2-2
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.23
Gear type: Ice corer 9 cm
Sample depth (m): 0.30
Bottom depth (m): 4,001.89

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: 2021-10-12T11:45:31
Modified: 2021-10-12T11:45:31
History: 2021-10-12T11:45:31Z: Initial read in of the log files.
Event remarks: P vs I after incubation 10
Source document: AeN_2021710_Primary_Production_Marti_04edits.xlsx
statID: 137
end_date: 2021-09-01 00:00:00
end_time: 20:17:12.715000
start_date: 2021-09-01 00:00:00
vesselName: Kronprins Haakon
intendedMethod: P vs I curves
endDecimalLatitude: 83.8573895333333
endDecimalLongitude: 24.9987284333333
Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity
Event ID: dd769554-0a4f-11ec-b81f-005056a2bfc1
Parent Event ID: c60ffc3c-063e-11ec-a0a0-cbdffd2fb05a
Event date: 2021-09-01T07:00:36
Station: P8 (NLEG29) Ice (2021 Joint Cruise 2-2)
Location: 83° 53' 58" N , 25° 24' 41" E
Cruise number: 2021710
Cruise name: 2021 Joint Cruise 2-2
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.23
Gear type: Ice corer 9 cm
Sample depth (m): 0.30
Bottom depth (m): 4,001.89

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: 2021-10-12T11:45:31
Modified: 2021-10-12T11:45:31
History: 2021-10-12T11:45:31Z: Initial read in of the log files.
Event remarks: P vs I after incubation 9
Source document: AeN_2021710_Primary_Production_Marti_04edits.xlsx
statID: 137
end_date: 2021-09-01 00:00:00
end_time: 20:17:12.715000
start_date: 2021-09-01 00:00:00
vesselName: Kronprins Haakon
intendedMethod: P vs I curves
endDecimalLatitude: 83.8573895333333
endDecimalLongitude: 24.9987284333333
Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity
Event ID: dd769553-0a4f-11ec-b81f-005056a2bfc1
Parent Event ID: c60ffc3c-063e-11ec-a0a0-cbdffd2fb05a
Event date: 2021-09-01T07:00:36
Station: P8 (NLEG29) Ice (2021 Joint Cruise 2-2)
Location: 83° 53' 58" N , 25° 24' 41" E
Cruise number: 2021710
Cruise name: 2021 Joint Cruise 2-2
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.23
Gear type: Ice corer 9 cm
Sample depth (m): 0.30
Bottom depth (m): 4,001.89

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: 2021-10-12T11:45:31
Modified: 2021-10-12T11:45:31
History: 2021-10-12T11:45:31Z: Initial read in of the log files.
Event remarks: P vs I after incubation 8
Source document: AeN_2021710_Primary_Production_Marti_04edits.xlsx
statID: 137
end_date: 2021-09-01 00:00:00
end_time: 20:17:12.715000
start_date: 2021-09-01 00:00:00
vesselName: Kronprins Haakon
intendedMethod: P vs I curves
endDecimalLatitude: 83.8573895333333
endDecimalLongitude: 24.9987284333333
Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity
Event ID: dd769551-0a4f-11ec-b81f-005056a2bfc1
Parent Event ID: c60ffc3c-063e-11ec-a0a0-cbdffd2fb05a
Event date: 2021-09-01T07:00:36
Station: P8 (NLEG29) Ice (2021 Joint Cruise 2-2)
Location: 83° 53' 58" N , 25° 24' 41" E
Cruise number: 2021710
Cruise name: 2021 Joint Cruise 2-2
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.23
Gear type: Ice corer 9 cm
Sample depth (m): 0.30
Bottom depth (m): 4,001.89

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: 2021-10-12T11:45:31
Modified: 2021-10-12T11:45:31
History: 2021-10-12T11:45:31Z: Initial read in of the log files.
Event remarks: P vs I after incubation 6
Source document: AeN_2021710_Primary_Production_Marti_04edits.xlsx
statID: 137
end_date: 2021-09-01 00:00:00
end_time: 20:17:12.715000
start_date: 2021-09-01 00:00:00
vesselName: Kronprins Haakon
intendedMethod: P vs I curves
endDecimalLatitude: 83.8573895333333
endDecimalLongitude: 24.9987284333333
Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity
Event ID: dd769550-0a4f-11ec-b81f-005056a2bfc1
Parent Event ID: c60ffc3c-063e-11ec-a0a0-cbdffd2fb05a
Event date: 2021-09-01T07:00:36
Station: P8 (NLEG29) Ice (2021 Joint Cruise 2-2)
Location: 83° 53' 58" N , 25° 24' 41" E
Cruise number: 2021710
Cruise name: 2021 Joint Cruise 2-2
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.23
Gear type: Ice corer 9 cm
Sample depth (m): 0.30
Bottom depth (m): 4,001.89

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: 2021-10-12T11:45:31
Modified: 2021-10-12T11:45:31
History: 2021-10-12T11:45:31Z: Initial read in of the log files.
Event remarks: P vs I after incubation 5
Source document: AeN_2021710_Primary_Production_Marti_04edits.xlsx
statID: 137
end_date: 2021-09-01 00:00:00
end_time: 20:17:12.715000
start_date: 2021-09-01 00:00:00
vesselName: Kronprins Haakon
intendedMethod: P vs I curves
endDecimalLatitude: 83.8573895333333
endDecimalLongitude: 24.9987284333333
Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity
Event ID: dd76954e-0a4f-11ec-b81f-005056a2bfc1
Parent Event ID: c60ffc3c-063e-11ec-a0a0-cbdffd2fb05a
Event date: 2021-09-01T07:00:36
Station: P8 (NLEG29) Ice (2021 Joint Cruise 2-2)
Location: 83° 53' 58" N , 25° 24' 41" E
Cruise number: 2021710
Cruise name: 2021 Joint Cruise 2-2
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.23
Gear type: Ice corer 9 cm
Sample depth (m): 0.30
Bottom depth (m): 4,001.89

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: 2021-10-12T11:45:31
Modified: 2021-10-12T11:45:31
History: 2021-10-12T11:45:31Z: Initial read in of the log files.
Event remarks: P vs I after incubation 3
Source document: AeN_2021710_Primary_Production_Marti_04edits.xlsx
statID: 137
end_date: 2021-09-01 00:00:00
end_time: 20:17:12.715000
start_date: 2021-09-01 00:00:00
vesselName: Kronprins Haakon
intendedMethod: P vs I curves
endDecimalLatitude: 83.8573895333333
endDecimalLongitude: 24.9987284333333
Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity
Event ID: dd76954d-0a4f-11ec-b81f-005056a2bfc1
Parent Event ID: c60ffc3c-063e-11ec-a0a0-cbdffd2fb05a
Event date: 2021-09-01T07:00:36
Station: P8 (NLEG29) Ice (2021 Joint Cruise 2-2)
Location: 83° 53' 58" N , 25° 24' 41" E
Cruise number: 2021710
Cruise name: 2021 Joint Cruise 2-2
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.23
Gear type: Ice corer 9 cm
Sample depth (m): 0.30
Bottom depth (m): 4,001.89

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: 2021-10-12T11:45:31
Modified: 2021-10-12T11:45:31
History: 2021-10-12T11:45:31Z: Initial read in of the log files.
Event remarks: P vs I after incubation 2
Source document: AeN_2021710_Primary_Production_Marti_04edits.xlsx
statID: 137
end_date: 2021-09-01 00:00:00
end_time: 20:17:12.715000
start_date: 2021-09-01 00:00:00
vesselName: Kronprins Haakon
intendedMethod: P vs I curves
endDecimalLatitude: 83.8573895333333
endDecimalLongitude: 24.9987284333333
Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity
Event ID: dd76954c-0a4f-11ec-b81f-005056a2bfc1
Parent Event ID: c60ffc3c-063e-11ec-a0a0-cbdffd2fb05a
Event date: 2021-09-01T07:00:36
Station: P8 (NLEG29) Ice (2021 Joint Cruise 2-2)
Location: 83° 53' 58" N , 25° 24' 41" E
Cruise number: 2021710
Cruise name: 2021 Joint Cruise 2-2
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.23
Gear type: Ice corer 9 cm
Sample depth (m): 0.30
Bottom depth (m): 4,001.89

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: 2021-10-12T11:45:31
Modified: 2021-10-12T11:45:31
History: 2021-10-12T11:45:31Z: Initial read in of the log files.
Event remarks: P vs I after incubation 1
Source document: AeN_2021710_Primary_Production_Marti_04edits.xlsx
statID: 137
end_date: 2021-09-01 00:00:00
end_time: 20:17:12.715000
start_date: 2021-09-01 00:00:00
vesselName: Kronprins Haakon
intendedMethod: P vs I curves
endDecimalLatitude: 83.8573895333333
endDecimalLongitude: 24.9987284333333
Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity
Event ID: d64c72aa-0a4f-11ec-b81f-005056a2bfc1
Parent Event ID: c60ffc3c-063e-11ec-a0a0-cbdffd2fb05a
Event date: 2021-09-01T07:00:36
Station: P8 (NLEG29) Ice (2021 Joint Cruise 2-2)
Location: 83° 53' 58" N , 25° 24' 41" E
Cruise number: 2021710
Cruise name: 2021 Joint Cruise 2-2
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.23
Gear type: Ice corer 9 cm
Sample depth (m): 0.30
Bottom depth (m): 4,001.89

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: 2021-10-12T11:45:31
Modified: 2021-10-12T11:45:31
History: 2021-10-12T11:45:31Z: Initial read in of the log files.
Event remarks: P vs I Total carbon 4
Source document: AeN_2021710_Primary_Production_Marti_04edits.xlsx
statID: 137
end_date: 2021-09-01 00:00:00
end_time: 20:17:12.715000
start_date: 2021-09-01 00:00:00
vesselName: Kronprins Haakon
intendedMethod: P vs I curves
endDecimalLatitude: 83.8573895333333
endDecimalLongitude: 24.9987284333333
Seasonality in primary production, Nitrogen sources for primary production and primary producers response to light intensity
Event ID: d5498212-0a4f-11ec-b81f-005056a2bfc1
Parent Event ID: c60ffc3c-063e-11ec-a0a0-cbdffd2fb05a
Event date: 2021-09-01T07:00:36
Station: P8 (NLEG29) Ice (2021 Joint Cruise 2-2)
Location: 83° 53' 58" N , 25° 24' 41" E
Cruise number: 2021710
Cruise name: 2021 Joint Cruise 2-2
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.23
Gear type: Ice corer 9 cm
Sample depth (m): 0.30
Bottom depth (m): 4,001.89

Person of Interest

Name: Rolf Gradinger
Email: rolf.gradinger@uit.no
Institution: University of Tromsø

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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: 2021-10-12T11:45:31
Modified: 2021-10-12T11:45:31
History: 2021-10-12T11:45:31Z: Initial read in of the log files.
Event remarks: P vs I Total carbon 3
Source document: AeN_2021710_Primary_Production_Marti_04edits.xlsx
statID: 137
end_date: 2021-09-01 00:00:00
end_time: 20:17:12.715000
start_date: 2021-09-01 00:00:00
vesselName: Kronprins Haakon
intendedMethod: P vs I curves
endDecimalLatitude: 83.8573895333333
endDecimalLongitude: 24.9987284333333

Person of interest

Institution

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

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

Abstract

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

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

Abstract

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

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

Abstract

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

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

Abstract

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

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

Abstract

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

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

Abstract

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

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

Abstract

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

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

Abstract

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

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

Abstract

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

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

Abstract

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

Abstract

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

Abstract

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

Abstract

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

Abstract

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

Abstract

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

Abstract

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

Abstract

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

Abstract

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

Abstract

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

Abstract

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Cruise name

Gear Type

Sample type

Sample depth (m)