Chlorophyll a concentration, and proportion of time in the water column obtained by instrumented bowhead whales
Sixty hours of direct measurements of fluorescence were collected from six bowhead whales (Balaena mysticetus) instrumented with fluorometers in Greenland in April 2005 and 2006. The data were used to (1) characterize the three-dimensional spatial pattern of chlorophyll-a (Chl-a) in the water column...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.815106 2024-09-15T17:50:59+00:00 Chlorophyll a concentration, and proportion of time in the water column obtained by instrumented bowhead whales Laidre, Kristin L Heide-Jørgensen, Mads Peter Logsdon, Miles L Delwiche, Leon Nielsen, Torkel Gissel LATITUDE: 69.209000 * LONGITUDE: -53.556000 * DATE/TIME START: 2005-04-22T13:56:00 * DATE/TIME END: 2006-05-01T18:55:00 2010 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.815106 https://doi.org/10.1594/PANGAEA.815106 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.815106 https://doi.org/10.1594/PANGAEA.815106 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Laidre, Kristin L; Heide-Jørgensen, Mads Peter; Logsdon, Miles L; Delwiche, Leon; Nielsen, Torkel Gissel (2010): A whale of an opportunity: Examining the vertical structure of chlorophyll-a in high Arctic waters using instrumented marine predators. Marine Biology Research, 6(6), 519-529, https://doi.org/10.1080/17451000903505616 Disko_Bay-Qeqe Disko Bay Greenland International Polar Year (2007-2008) IPY MULT Multiple investigations dataset publication series 2010 ftpangaea https://doi.org/10.1594/PANGAEA.81510610.1080/17451000903505616 2024-07-24T02:31:21Z Sixty hours of direct measurements of fluorescence were collected from six bowhead whales (Balaena mysticetus) instrumented with fluorometers in Greenland in April 2005 and 2006. The data were used to (1) characterize the three-dimensional spatial pattern of chlorophyll-a (Chl-a) in the water column, (2) to examine the relationships between whale foraging areas and productive zones, and (3) to examine the correlation between whale-derived in situ values of Chl-a and those from concurrent satellite images using the NASA MODIS (Moderate Resolution Imaging Spectroradiometer) EOS-AQUA satellite (MOD21, SeaWifs analogue OC3M and SST MOD37). Bowhead whales traversed 1600 km**2, providing information on diving, Chl-a structure and temperature profiles to depths below 200 m. Feeding dives frequently passed through surface waters ( >50 m) and targeted depths close to the bottom, and whales did not always target patches of high concentrations of Chl-a in the upper 50 m. Five satellite images were available within the periods whales carried fluorometers. Whales traversed 91 pixels collecting on average 761 s (SD 826) of Chl-a samples per pixel (0-136 m). The depth of the Chl-a maximum ranged widely, from 1 to 66 m. Estimates of Chl-a made from the water-leaving radiance measurements using the OC3M algorithm were highly skewed with most samples estimated as <1 mg/m**3 Chl-a, while data collected from whales had a broad distribution with Chl-a reaching >9 mg/m**3. The correlation between the satellite-derived and whale-derived Chl-a maxima was poor, a linear fit explained only 10% of the variance. Other/Unknown Material Arctic Balaena mysticetus Disko Bay Greenland International Polar Year IPY PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-53.556000,-53.556000,69.209000,69.209000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Disko_Bay-Qeqe Disko Bay Greenland International Polar Year (2007-2008) IPY MULT Multiple investigations |
spellingShingle |
Disko_Bay-Qeqe Disko Bay Greenland International Polar Year (2007-2008) IPY MULT Multiple investigations Laidre, Kristin L Heide-Jørgensen, Mads Peter Logsdon, Miles L Delwiche, Leon Nielsen, Torkel Gissel Chlorophyll a concentration, and proportion of time in the water column obtained by instrumented bowhead whales |
topic_facet |
Disko_Bay-Qeqe Disko Bay Greenland International Polar Year (2007-2008) IPY MULT Multiple investigations |
description |
Sixty hours of direct measurements of fluorescence were collected from six bowhead whales (Balaena mysticetus) instrumented with fluorometers in Greenland in April 2005 and 2006. The data were used to (1) characterize the three-dimensional spatial pattern of chlorophyll-a (Chl-a) in the water column, (2) to examine the relationships between whale foraging areas and productive zones, and (3) to examine the correlation between whale-derived in situ values of Chl-a and those from concurrent satellite images using the NASA MODIS (Moderate Resolution Imaging Spectroradiometer) EOS-AQUA satellite (MOD21, SeaWifs analogue OC3M and SST MOD37). Bowhead whales traversed 1600 km**2, providing information on diving, Chl-a structure and temperature profiles to depths below 200 m. Feeding dives frequently passed through surface waters ( >50 m) and targeted depths close to the bottom, and whales did not always target patches of high concentrations of Chl-a in the upper 50 m. Five satellite images were available within the periods whales carried fluorometers. Whales traversed 91 pixels collecting on average 761 s (SD 826) of Chl-a samples per pixel (0-136 m). The depth of the Chl-a maximum ranged widely, from 1 to 66 m. Estimates of Chl-a made from the water-leaving radiance measurements using the OC3M algorithm were highly skewed with most samples estimated as <1 mg/m**3 Chl-a, while data collected from whales had a broad distribution with Chl-a reaching >9 mg/m**3. The correlation between the satellite-derived and whale-derived Chl-a maxima was poor, a linear fit explained only 10% of the variance. |
format |
Other/Unknown Material |
author |
Laidre, Kristin L Heide-Jørgensen, Mads Peter Logsdon, Miles L Delwiche, Leon Nielsen, Torkel Gissel |
author_facet |
Laidre, Kristin L Heide-Jørgensen, Mads Peter Logsdon, Miles L Delwiche, Leon Nielsen, Torkel Gissel |
author_sort |
Laidre, Kristin L |
title |
Chlorophyll a concentration, and proportion of time in the water column obtained by instrumented bowhead whales |
title_short |
Chlorophyll a concentration, and proportion of time in the water column obtained by instrumented bowhead whales |
title_full |
Chlorophyll a concentration, and proportion of time in the water column obtained by instrumented bowhead whales |
title_fullStr |
Chlorophyll a concentration, and proportion of time in the water column obtained by instrumented bowhead whales |
title_full_unstemmed |
Chlorophyll a concentration, and proportion of time in the water column obtained by instrumented bowhead whales |
title_sort |
chlorophyll a concentration, and proportion of time in the water column obtained by instrumented bowhead whales |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.815106 https://doi.org/10.1594/PANGAEA.815106 |
op_coverage |
LATITUDE: 69.209000 * LONGITUDE: -53.556000 * DATE/TIME START: 2005-04-22T13:56:00 * DATE/TIME END: 2006-05-01T18:55:00 |
long_lat |
ENVELOPE(-53.556000,-53.556000,69.209000,69.209000) |
genre |
Arctic Balaena mysticetus Disko Bay Greenland International Polar Year IPY |
genre_facet |
Arctic Balaena mysticetus Disko Bay Greenland International Polar Year IPY |
op_source |
Supplement to: Laidre, Kristin L; Heide-Jørgensen, Mads Peter; Logsdon, Miles L; Delwiche, Leon; Nielsen, Torkel Gissel (2010): A whale of an opportunity: Examining the vertical structure of chlorophyll-a in high Arctic waters using instrumented marine predators. Marine Biology Research, 6(6), 519-529, https://doi.org/10.1080/17451000903505616 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.815106 https://doi.org/10.1594/PANGAEA.815106 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.81510610.1080/17451000903505616 |
_version_ |
1810292782893367296 |