(Table 1) Beluga (Delphinapterus leucas) density and abundance, and pod characteristics in west Greenland waters
An aerial survey was conducted to estimate the abundance of belugas (Delphinapterus leucas) on their wintering ground in West Greenland in March-April 2006 and 2008. The survey was conducted as a double platform aerial line transect survey, and sampled approximately 17% of the total survey area of c...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.811008 2024-09-15T17:57:01+00:00 (Table 1) Beluga (Delphinapterus leucas) density and abundance, and pod characteristics in west Greenland waters Heide-Jørgensen, Mads Peter Laidre, Kristin L Borchers, David Marques, Tiago A Stern, H Simon, M MEDIAN LATITUDE: 70.500000 * MEDIAN LONGITUDE: -56.250000 * SOUTH-BOUND LATITUDE: 67.000000 * WEST-BOUND LONGITUDE: -57.500000 * NORTH-BOUND LATITUDE: 74.000000 * EAST-BOUND LONGITUDE: -55.000000 * DATE/TIME START: 2006-03-21T00:00:00 * DATE/TIME END: 2006-04-19T00:00:00 2010 text/tab-separated-values, 258 data points https://doi.pangaea.de/10.1594/PANGAEA.811008 https://doi.org/10.1594/PANGAEA.811008 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.811008 https://doi.org/10.1594/PANGAEA.811008 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Heide-Jørgensen, Mads Peter; Laidre, Kristin L; Borchers, David; Marques, Tiago A; Stern, H; Simon, M (2010): The effect of sea-ice loss on beluga whales (Delphinapterus leucas) in West Greenland. Polar Research, 29(2), 198-208, https://doi.org/10.1111/j.1751-8369.2009.00142.x Area Area/locality Coefficient DATE/TIME Date/time end Delphinapterus leucas density density of pods number of pods pod size International Polar Year (2007-2008) IPY Length of transect Number Number of observations Ratio Sampling date W_Greenland_area2 West Greenland Whale watching WHW dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.81100810.1111/j.1751-8369.2009.00142.x 2024-07-24T02:31:32Z An aerial survey was conducted to estimate the abundance of belugas (Delphinapterus leucas) on their wintering ground in West Greenland in March-April 2006 and 2008. The survey was conducted as a double platform aerial line transect survey, and sampled approximately 17% of the total survey area of ca. 125 000 km**2. The abundance of belugas was 10 595 (95% confidence interval 4904-24 650). The largest abundance was found at the northern part of Store Hellefiske Bank, at the eastern edge of the Baffin Bay pack ice, a pattern similar to that found in eight systematic surveys conducted since 1981. A clear relationship between decreasing sea-ice cover and increasing offshore distance of beluga sightings was established from all previous surveys, suggesting that belugas expand their distribution westward as new areas on the banks of West Greenland open up earlier in spring with reduced sea-ice coverage or early annual ice recession. This is in contrast to the relatively confined distribution of belugas near the coast in limited open areas in the early 1980s, when sea-ice cover was greater. However, the effects of the changes in coastal availability of belugas can also be observed with the correlation between catches from the local Inuit hunt and sea-ice cover, where the catches increased significantly with increasing sea-ice coverage during the period 1954-2006. These results, based on nearly 30 years of dedicated survey effort, are among the first available evidence showing a shift in distribution of an Arctic cetacean in response to changes in sea-ice coverage. Dataset Baffin Bay Baffin Bay Baffin Beluga Beluga* Delphinapterus leucas Greenland International Polar Year inuit IPY Polar Research Sea ice PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-57.500000,-55.000000,74.000000,67.000000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Area Area/locality Coefficient DATE/TIME Date/time end Delphinapterus leucas density density of pods number of pods pod size International Polar Year (2007-2008) IPY Length of transect Number Number of observations Ratio Sampling date W_Greenland_area2 West Greenland Whale watching WHW |
spellingShingle |
Area Area/locality Coefficient DATE/TIME Date/time end Delphinapterus leucas density density of pods number of pods pod size International Polar Year (2007-2008) IPY Length of transect Number Number of observations Ratio Sampling date W_Greenland_area2 West Greenland Whale watching WHW Heide-Jørgensen, Mads Peter Laidre, Kristin L Borchers, David Marques, Tiago A Stern, H Simon, M (Table 1) Beluga (Delphinapterus leucas) density and abundance, and pod characteristics in west Greenland waters |
topic_facet |
Area Area/locality Coefficient DATE/TIME Date/time end Delphinapterus leucas density density of pods number of pods pod size International Polar Year (2007-2008) IPY Length of transect Number Number of observations Ratio Sampling date W_Greenland_area2 West Greenland Whale watching WHW |
description |
An aerial survey was conducted to estimate the abundance of belugas (Delphinapterus leucas) on their wintering ground in West Greenland in March-April 2006 and 2008. The survey was conducted as a double platform aerial line transect survey, and sampled approximately 17% of the total survey area of ca. 125 000 km**2. The abundance of belugas was 10 595 (95% confidence interval 4904-24 650). The largest abundance was found at the northern part of Store Hellefiske Bank, at the eastern edge of the Baffin Bay pack ice, a pattern similar to that found in eight systematic surveys conducted since 1981. A clear relationship between decreasing sea-ice cover and increasing offshore distance of beluga sightings was established from all previous surveys, suggesting that belugas expand their distribution westward as new areas on the banks of West Greenland open up earlier in spring with reduced sea-ice coverage or early annual ice recession. This is in contrast to the relatively confined distribution of belugas near the coast in limited open areas in the early 1980s, when sea-ice cover was greater. However, the effects of the changes in coastal availability of belugas can also be observed with the correlation between catches from the local Inuit hunt and sea-ice cover, where the catches increased significantly with increasing sea-ice coverage during the period 1954-2006. These results, based on nearly 30 years of dedicated survey effort, are among the first available evidence showing a shift in distribution of an Arctic cetacean in response to changes in sea-ice coverage. |
format |
Dataset |
author |
Heide-Jørgensen, Mads Peter Laidre, Kristin L Borchers, David Marques, Tiago A Stern, H Simon, M |
author_facet |
Heide-Jørgensen, Mads Peter Laidre, Kristin L Borchers, David Marques, Tiago A Stern, H Simon, M |
author_sort |
Heide-Jørgensen, Mads Peter |
title |
(Table 1) Beluga (Delphinapterus leucas) density and abundance, and pod characteristics in west Greenland waters |
title_short |
(Table 1) Beluga (Delphinapterus leucas) density and abundance, and pod characteristics in west Greenland waters |
title_full |
(Table 1) Beluga (Delphinapterus leucas) density and abundance, and pod characteristics in west Greenland waters |
title_fullStr |
(Table 1) Beluga (Delphinapterus leucas) density and abundance, and pod characteristics in west Greenland waters |
title_full_unstemmed |
(Table 1) Beluga (Delphinapterus leucas) density and abundance, and pod characteristics in west Greenland waters |
title_sort |
(table 1) beluga (delphinapterus leucas) density and abundance, and pod characteristics in west greenland waters |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.811008 https://doi.org/10.1594/PANGAEA.811008 |
op_coverage |
MEDIAN LATITUDE: 70.500000 * MEDIAN LONGITUDE: -56.250000 * SOUTH-BOUND LATITUDE: 67.000000 * WEST-BOUND LONGITUDE: -57.500000 * NORTH-BOUND LATITUDE: 74.000000 * EAST-BOUND LONGITUDE: -55.000000 * DATE/TIME START: 2006-03-21T00:00:00 * DATE/TIME END: 2006-04-19T00:00:00 |
long_lat |
ENVELOPE(-57.500000,-55.000000,74.000000,67.000000) |
genre |
Baffin Bay Baffin Bay Baffin Beluga Beluga* Delphinapterus leucas Greenland International Polar Year inuit IPY Polar Research Sea ice |
genre_facet |
Baffin Bay Baffin Bay Baffin Beluga Beluga* Delphinapterus leucas Greenland International Polar Year inuit IPY Polar Research Sea ice |
op_source |
Supplement to: Heide-Jørgensen, Mads Peter; Laidre, Kristin L; Borchers, David; Marques, Tiago A; Stern, H; Simon, M (2010): The effect of sea-ice loss on beluga whales (Delphinapterus leucas) in West Greenland. Polar Research, 29(2), 198-208, https://doi.org/10.1111/j.1751-8369.2009.00142.x |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.811008 https://doi.org/10.1594/PANGAEA.811008 |
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.81100810.1111/j.1751-8369.2009.00142.x |
_version_ |
1810433215017517056 |