Nansen Legacy Search

Displaying 1 - 10 of 1308

954d8e0e-acc7-11eb-ae89-005056a2bfc1
Event ID: 954d8e0e-acc7-11eb-ae89-005056a2bfc1
Parent Event ID: 943a9731-a7df-11eb-ae89-005056a2bfc1
Event date: 2021-05-06T09:01:12
Station: P4 (NLEG11)
Location: 79° 39' 41" N , 33° 25' 59" E
Cruise number: 2021704
Cruise name: 2021 Seasonal Study Q2
Bottle number: 18
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.23
Gear type: CTD w/bottles
Sample depth (m): 20.00
Bottom depth (m): 361.86

Person of Interest

Name: Rolf Gradinger
Email: rolf.gradinger@uit.no
Institution: UiT

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: 2021-05-31T09:30:26
History: 2021-05-26T10:51:28Z: Initial read in of the log files. 2021-05-31T09:30:26Z: Updating station names
Event remarks: P vs I after incubation 5
Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
statID: 16
end_date: 2021-05-06 00:00:00
end_time: 09:31:55.672000
start_date: 2021-05-06 00:00:00
vesselName: Kronprins Haakon
stationName: P4
intendedMethod: P vs I curves
endDecimalLatitude: 79.6605995666667
endDecimalLongitude: 33.43663415
maximumDepthInMeters: 351
f1283d20-b68a-11eb-ae89-005056a2bfc1
Event ID: f1283d20-b68a-11eb-ae89-005056a2bfc1
Parent Event ID: 99ebc590-ae7e-11eb-99c1-db430a2581b4
Event date: 2021-05-06T15:20:33
Station: P4 (NLEG11)
Location: 79° 45' 3" N , 34° 0' 31" 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): 335.29

Person of Interest

Name: Rolf Gradinger
Email: rolf.gradinger@uit.no
Institution: UiT

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: 2021-05-31T09:30:27
History: 2021-05-26T10:51:29Z: Initial read in of the log files. 2021-05-31T09:30:27Z: Updating station names
Event remarks: P4 t-48 2
Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
statID: 17
end_date: 2021-05-06 00:00:00
end_time: 15:49:13.671000
start_date: 2021-05-06 00:00:00
vesselName: Kronprins Haakon
stationName: P4
endDecimalLatitude: 79.7507598833333
endDecimalLongitude: 34.0048907
e9c806a0-b68a-11eb-ae89-005056a2bfc1
Event ID: e9c806a0-b68a-11eb-ae89-005056a2bfc1
Parent Event ID: 99ebc590-ae7e-11eb-99c1-db430a2581b4
Event date: 2021-05-06T15:20:33
Station: P4 (NLEG11)
Location: 79° 45' 3" N , 34° 0' 31" 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): 335.29

Person of Interest

Name: Rolf Gradinger
Email: rolf.gradinger@uit.no
Institution: UiT

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: 2021-05-31T09:30:27
History: 2021-05-26T10:51:29Z: Initial read in of the log files. 2021-05-31T09:30:27Z: Updating station names
Event remarks: P4 t-12 3
Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
statID: 17
end_date: 2021-05-06 00:00:00
end_time: 15:49:13.671000
start_date: 2021-05-06 00:00:00
vesselName: Kronprins Haakon
stationName: P4
endDecimalLatitude: 79.7507598833333
endDecimalLongitude: 34.0048907
7401bd22-b328-11eb-ae89-005056a2bfc1
Event ID: 7401bd22-b328-11eb-ae89-005056a2bfc1
Parent Event ID: 76ae1382-aa52-11eb-ae89-005056a2bfc1
Event date: 2021-05-12T08:02:30
Station: P6 (NLEG21)
Location: 81° 32' 52" N , 30° 50' 56" 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): 20.00
Bottom depth (m): 890.61

Person of Interest

Name: Rolf Gradinger
Email: rolf.gradinger@uit.no
Institution: UiT

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: 2021-05-31T09:30:26
History: 2021-05-26T10:51:29Z: Initial read in of the log files. 2021-05-31T09:30:26Z: Updating station names
Event remarks: P vs I after incubation 2
Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
statID: 35
end_date: 2021-05-12 00:00:00
end_time: 09:00:36.805000
start_date: 2021-05-12 00:00:00
vesselName: Kronprins Haakon
stationName: P6
intendedMethod: P vs I curves
endDecimalLatitude: 81.548055
endDecimalLongitude: 30.8512071166667
maximumDepthInMeters: 880
2b56ec2e-b327-11eb-ae89-005056a2bfc1
Event ID: 2b56ec2e-b327-11eb-ae89-005056a2bfc1
Parent Event ID: 76ae139c-aa52-11eb-ae89-005056a2bfc1
Event date: 2021-05-13T16:30:48
Station: P7 (NLEG25)_Ice
Location: 82° 8' 50" N , 29° 8' 21" E
Cruise number: 2021704
Cruise name: 2021 Seasonal Study Q2
Bottle number: 8
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.22
Gear type: CTD w/bottles
Sample depth (m): 20.00
Bottom depth (m): 3,508.90

Person of Interest

Name: Rolf Gradinger
Email: rolf.gradinger@uit.no
Institution: UiT

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: 2021-05-31T09:30:27
History: 2021-05-26T10:51:29Z: Initial read in of the log files. 2021-05-31T09:30:27Z: Updating station names
Event remarks: Total carbon (t0) sample Blank
Source document: AeN_2021704_Q2_PrimaryProduction_Mart¡_edits.xlsx
statID: 39
end_date: 2021-05-13 00:00:00
end_time: 16:50:22.706000
start_date: 2021-05-13 00:00:00
vesselName: Kronprins Haakon
stationName: P7
intendedMethod: C14 incubations
endDecimalLatitude: 82.1446341166667
endDecimalLongitude: 29.15129695
maximumDepthInMeters: 90
ddc40854-82e1-11eb-89b3-005056a2aba6
Event ID: ddc40854-82e1-11eb-89b3-005056a2aba6
Parent Event ID: 72cec087-8285-11eb-89b3-005056a2aba6
Event date: 2021-03-12T05:26:12
Station: P5 (NLEG13)
Location: 80° 30' 44" N , 33° 53' 57" E
Cruise number: 2021703
Cruise name: 2021 Seasonal Study Q1
Bottle number: 6
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.22
Gear type: CTD w/bottles
Sample depth (m): 30.00
Bottom depth (m): 168.40

Person of Interest

Name: Rolf Gradinger
Email: rolf.gradinger@uit.no
Institution: UiT

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: 2021-04-26T11:45:47
Modified: 2021-05-31T09:24:32
History: 2021-04-26T11:45:47Z: Initial read in of the log files. 2021-05-31T09:24:32Z: Updating station names
Event remarks: Total carbon (t0) sample
Source document: AeN_SQ1_2021703_PP_Marti_edits.xlsx
statID: 15
end_date: 2021-03-12 00:00:00
end_time: 09:11:17.327000
start_date: 2021-03-12 00:00:00
vesselName: Kronprins Haakon
intendedMethod: C14 incubations
endDecimalLatitude: 80.5177583
endDecimalLongitude: 33.8710084833333
066b4e0e-849d-11eb-89b3-005056a2aba6
Event ID: 066b4e0e-849d-11eb-89b3-005056a2aba6
Parent Event ID: 72cec0cd-8285-11eb-89b3-005056a2aba6
Event date: 2021-03-14T10:46:35
Station: P6 (NLEG21/NPAL15)
Location: 81° 32' 59" N , 30° 51' 48" E
Cruise number: 2021703
Cruise name: 2021 Seasonal Study Q1
Bottle number: 15
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.22
Gear type: CTD w/bottles
Sample depth (m): 30.00
Bottom depth (m): 897.83

Person of Interest

Name: Rolf Gradinger
Email: rolf.gradinger@uit.no
Institution: UiT

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: 2021-04-26T11:45:47
Modified: 2021-05-31T09:24:32
History: 2021-04-26T11:45:47Z: Initial read in of the log files. 2021-05-31T09:24:32Z: Updating station names
Event remarks: Total carbon (t0) sample
Source document: AeN_SQ1_2021703_PP_Marti_edits.xlsx
statID: 24
end_date: 2021-03-14 00:00:00
end_time: 11:46:47.598000
start_date: 2021-03-14 00:00:00
vesselName: Kronprins Haakon
intendedMethod: C14 incubations
endDecimalLatitude: 81.5508409833333
endDecimalLongitude: 30.89028925
maximumDepthInMeters: 875.439
minimumDepthInMeters: 0
7f269e46-865c-11eb-89b3-005056a2aba6
Event ID: 7f269e46-865c-11eb-89b3-005056a2aba6
Parent Event ID: 76312b75-8285-11eb-89b3-005056a2aba6
Event date: 2021-03-17T10:27:39
Station: P7 (NLEG25/NPAL16)
Location: 81° 59' 36" N , 29° 54' 31" E
Cruise number: 2021703
Cruise name: 2021 Seasonal Study Q1
Bottle number: 24
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.22
Gear type: CTD w/bottles
Sample depth (m): 10.00
Bottom depth (m): 3,302.55

Person of Interest

Name: Rolf Gradinger
Email: rolf.gradinger@uit.no
Institution: UiT

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: 2021-04-26T11:45:48
Modified: 2021-05-31T09:24:33
History: 2021-04-26T11:45:48Z: Initial read in of the log files. 2021-05-31T09:24:33Z: Updating station names
Event remarks: Total carbon (t0) sample
Source document: AeN_SQ1_2021703_PP_Marti_edits.xlsx
statID: 28
end_date: 2021-03-17 00:00:00
end_time: 13:39:03.776000
start_date: 2021-03-17 00:00:00
vesselName: Kronprins Haakon
intendedMethod: C14 incubations
endDecimalLatitude: 81.9906789166667
endDecimalLongitude: 29.8549903333333
maximumDepthInMeters: 3371.135
minimumDepthInMeters: 0
83cf9632-865c-11eb-89b3-005056a2aba6
Event ID: 83cf9632-865c-11eb-89b3-005056a2aba6
Parent Event ID: 76312b75-8285-11eb-89b3-005056a2aba6
Event date: 2021-03-17T10:27:39
Station: P7 (NLEG25/NPAL16)
Location: 81° 59' 36" N , 29° 54' 31" E
Cruise number: 2021703
Cruise name: 2021 Seasonal Study Q1
Bottle number: 24
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.22
Gear type: CTD w/bottles
Sample depth (m): 10.00
Bottom depth (m): 3,302.55

Person of Interest

Name: Rolf Gradinger
Email: rolf.gradinger@uit.no
Institution: UiT

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: 2021-04-26T11:45:48
Modified: 2021-05-31T09:24:33
History: 2021-04-26T11:45:48Z: Initial read in of the log files. 2021-05-31T09:24:33Z: Updating station names
Event remarks: Total carbon (t0) sample
Source document: AeN_SQ1_2021703_PP_Marti_edits.xlsx
statID: 28
end_date: 2021-03-17 00:00:00
end_time: 13:39:03.776000
start_date: 2021-03-17 00:00:00
vesselName: Kronprins Haakon
intendedMethod: C14 incubations
endDecimalLatitude: 81.9906789166667
endDecimalLongitude: 29.8549903333333
maximumDepthInMeters: 3371.135
minimumDepthInMeters: 0
7dda8246-865c-11eb-89b3-005056a2aba6
Event ID: 7dda8246-865c-11eb-89b3-005056a2aba6
Parent Event ID: 76312b75-8285-11eb-89b3-005056a2aba6
Event date: 2021-03-17T10:27:39
Station: P7 (NLEG25/NPAL16)
Location: 81° 59' 36" N , 29° 54' 31" E
Cruise number: 2021703
Cruise name: 2021 Seasonal Study Q1
Bottle number: 24
Sampletype: Primary production (14C-CO2)
Sampling protocol: 7.22
Gear type: CTD w/bottles
Sample depth (m): 10.00
Bottom depth (m): 3,302.55

Person of Interest

Name: Rolf Gradinger
Email: rolf.gradinger@uit.no
Institution: UiT

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: 2021-04-26T11:45:48
Modified: 2021-05-31T09:24:33
History: 2021-04-26T11:45:48Z: Initial read in of the log files. 2021-05-31T09:24:33Z: Updating station names
Event remarks: Total carbon (t0) sample
Source document: AeN_SQ1_2021703_PP_Marti_edits.xlsx
statID: 28
end_date: 2021-03-17 00:00:00
end_time: 13:39:03.776000
start_date: 2021-03-17 00:00:00
vesselName: Kronprins Haakon
intendedMethod: C14 incubations
endDecimalLatitude: 81.9906789166667
endDecimalLongitude: 29.8549903333333
maximumDepthInMeters: 3371.135
minimumDepthInMeters: 0

Person of interest

Institution

954d8e0e-acc7-11eb-ae89-005056a2bfc1

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

Abstract

f1283d20-b68a-11eb-ae89-005056a2bfc1

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

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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

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

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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

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

Abstract

7dda8246-865c-11eb-89b3-005056a2aba6

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

Abstract

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