Estimates of the abundance of minke whales (<i>Balaenoptera acutorostrata</i>) from Faroese and Icelandic NASS shipboard surveys
North Atlantic Sightings Surveys for cetaceans were carried out Northeast and Central Atlantic in 1987, 1989, 1995 and 2001. Here we provide estimates of density and abundance for minke whales from the Faroese and Icelandic ship surveys. The estimates are not corrected for availability or perception...
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| Format: | Article |
| Language: | English |
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Septentrio Academic Publishing
2009-09-01
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| Series: | NAMMCO Scientific Publications |
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| Online Access: | https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2707 |
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| author | Daniel G Pike Thorvaldur Gunnlaugsson Gísli A Víkingsson Geneviève Desportes Dorete Bloch |
| author_facet | Daniel G Pike Thorvaldur Gunnlaugsson Gísli A Víkingsson Geneviève Desportes Dorete Bloch |
| author_sort | Daniel G Pike |
| collection | DOAJ |
| description | North Atlantic Sightings Surveys for cetaceans were carried out Northeast and Central Atlantic in 1987, 1989, 1995 and 2001. Here we provide estimates of density and abundance for minke whales from the Faroese and Icelandic ship surveys. The estimates are not corrected for availability or perception biases. Double platform data collected in 2001 indicates that perception bias is likely considerable for this species. However comparison of corrected estimates of densityfrom aerial surveys with a ship survey estimate from the same area suggests that ship surveys can be nearly unbiased under optimal survey conditions with high searching effort. There were some regional changes in density over the period but no overall changes in density and abundance. Given the recent catch history for minke whales in this area, we would not expect to see changes in abundance due to exploitation that would be detectable with these surveys. |
| first_indexed | 2024-12-21T18:13:43Z |
| format | Article |
| id | doaj.art-155fdd8dbe804702a6972b346c0a8eac |
| institution | Directory Open Access Journal |
| issn | 1560-2206 2309-2491 |
| language | English |
| last_indexed | 2024-12-21T18:13:43Z |
| publishDate | 2009-09-01 |
| publisher | Septentrio Academic Publishing |
| record_format | Article |
| series | NAMMCO Scientific Publications |
| spelling | doaj.art-155fdd8dbe804702a6972b346c0a8eac2022-12-21T18:54:44ZengSeptentrio Academic PublishingNAMMCO Scientific Publications1560-22062309-24912009-09-0170819310.7557/3.27072503Estimates of the abundance of minke whales (<i>Balaenoptera acutorostrata</i>) from Faroese and Icelandic NASS shipboard surveysDaniel G Pike0Thorvaldur Gunnlaugsson1Gísli A Víkingsson2Geneviève Desportes3Dorete Bloch41210 Ski Club Road, North Bay, Ontario, P1B 8E5Marine Research Institute, P.O. Box 1390, IS 121 ReykjavíkMarine Research Institute, P.O. Box 1390, IS 121 ReykjavíkGDnatur, Stejlestræde 9, DK-5300 Kerteminde, Denmark and Faroese Museum of Natural History, Fútalág 40, FR 100 Tórshavn, Faroe IslandsFaroese Museum of Natural History, Fútalág 40, FR 100 Tórshavn, Faroe IslandsNorth Atlantic Sightings Surveys for cetaceans were carried out Northeast and Central Atlantic in 1987, 1989, 1995 and 2001. Here we provide estimates of density and abundance for minke whales from the Faroese and Icelandic ship surveys. The estimates are not corrected for availability or perception biases. Double platform data collected in 2001 indicates that perception bias is likely considerable for this species. However comparison of corrected estimates of densityfrom aerial surveys with a ship survey estimate from the same area suggests that ship surveys can be nearly unbiased under optimal survey conditions with high searching effort. There were some regional changes in density over the period but no overall changes in density and abundance. Given the recent catch history for minke whales in this area, we would not expect to see changes in abundance due to exploitation that would be detectable with these surveys.https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2707minke whalesBalaenoptera physalussurveysabundancedensity |
| spellingShingle | Daniel G Pike Thorvaldur Gunnlaugsson Gísli A Víkingsson Geneviève Desportes Dorete Bloch Estimates of the abundance of minke whales (<i>Balaenoptera acutorostrata</i>) from Faroese and Icelandic NASS shipboard surveys NAMMCO Scientific Publications minke whales Balaenoptera physalus surveys abundance density |
| title | Estimates of the abundance of minke whales (<i>Balaenoptera acutorostrata</i>) from Faroese and Icelandic NASS shipboard surveys |
| title_full | Estimates of the abundance of minke whales (<i>Balaenoptera acutorostrata</i>) from Faroese and Icelandic NASS shipboard surveys |
| title_fullStr | Estimates of the abundance of minke whales (<i>Balaenoptera acutorostrata</i>) from Faroese and Icelandic NASS shipboard surveys |
| title_full_unstemmed | Estimates of the abundance of minke whales (<i>Balaenoptera acutorostrata</i>) from Faroese and Icelandic NASS shipboard surveys |
| title_short | Estimates of the abundance of minke whales (<i>Balaenoptera acutorostrata</i>) from Faroese and Icelandic NASS shipboard surveys |
| title_sort | estimates of the abundance of minke whales i balaenoptera acutorostrata i from faroese and icelandic nass shipboard surveys |
| topic | minke whales Balaenoptera physalus surveys abundance density |
| url | https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2707 |
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