North Atlantic humpback whale abundance and rate of increase four decades after protection from whaling
Humpback whales Megaptera novaeangliae in the North Atlantic Ocean were severely depleted by exploitation. With legal protection since 1955, substantial recovery is likely to have occurred, but information on abundance and rates of increase has been limited. We present an assessment of humpback whal...
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ftmemorialuniv:oai:research.library.mun.ca:538 2024-09-15T18:11:12+00:00 North Atlantic humpback whale abundance and rate of increase four decades after protection from whaling Stevick, Peter T. Allen, Judith Clapham, Phillip J. Lien, John 2003-08-29 application/pdf https://research.library.mun.ca/538/ https://research.library.mun.ca/538/1/north_atlantic_humpback.pdf https://research.library.mun.ca/538/3/north_atlantic_humpback.pdf http://www.int-res.com/abstracts/meps/v258/p263-273/ en eng Inter-Research https://research.library.mun.ca/538/1/north_atlantic_humpback.pdf https://research.library.mun.ca/538/3/north_atlantic_humpback.pdf Stevick, Peter T. <https://research.library.mun.ca/view/creator_az/Stevick=3APeter_T=2E=3A=3A.html> and Allen, Judith <https://research.library.mun.ca/view/creator_az/Allen=3AJudith=3A=3A.html> and Clapham, Phillip J. <https://research.library.mun.ca/view/creator_az/Clapham=3APhillip_J=2E=3A=3A.html> and Lien, John <https://research.library.mun.ca/view/creator_az/Lien=3AJohn=3A=3A.html> (2003) North Atlantic humpback whale abundance and rate of increase four decades after protection from whaling. Marine Ecology Progress Series, 258. pp. 263-273. ISSN 1616-1599 cc_by_nc QH301 Biology Article PeerReviewed 2003 ftmemorialuniv 2024-07-10T03:16:00Z Humpback whales Megaptera novaeangliae in the North Atlantic Ocean were severely depleted by exploitation. With legal protection since 1955, substantial recovery is likely to have occurred, but information on abundance and rates of increase has been limited. We present an assessment of humpback whale abundance in the North Atlantic Ocean based upon capture-recapture estimates using naturally marked individuals. These data result from a long-term collaborative effort combining large-scale dedicated projects and incidental data collection, leading to extensive geographical coverage. The application of robust statistical techniques produces estimates of greater accuracy and precision than has previously been possible. Abundance estimates ranging from 5930 to 12 580 individuals, with coefficients of variation (CVs) from 0.07 to 0.39, were calculated for the West Indies breeding population using data from 1979 to 1993. The most precise estimate for the West Indies breeding population is 10 752 (CV = 0.068) for 1992 and 1993. Due to application of new analytical methods, these estimates are larger and more precise than those previously published from similar time periods. The average rate of increase for the West Indies breeding population over a 14 yr period was estimated to be 0.031 (SE = 0.005). The best available estimate for the entire North Atlantic population of humpback whales is 11 570 (95 % CI 10 290 to 13 390) based upon samples from 1992 and 1993. However, this estimate may be biased downwards to an unknown extent due to heterogeneity in capture probabilities that do not influence the West Indies estimates. Article in Journal/Newspaper Humpback Whale Megaptera novaeangliae North Atlantic Memorial University of Newfoundland: Research Repository |
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Memorial University of Newfoundland: Research Repository |
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English |
topic |
QH301 Biology |
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QH301 Biology Stevick, Peter T. Allen, Judith Clapham, Phillip J. Lien, John North Atlantic humpback whale abundance and rate of increase four decades after protection from whaling |
topic_facet |
QH301 Biology |
description |
Humpback whales Megaptera novaeangliae in the North Atlantic Ocean were severely depleted by exploitation. With legal protection since 1955, substantial recovery is likely to have occurred, but information on abundance and rates of increase has been limited. We present an assessment of humpback whale abundance in the North Atlantic Ocean based upon capture-recapture estimates using naturally marked individuals. These data result from a long-term collaborative effort combining large-scale dedicated projects and incidental data collection, leading to extensive geographical coverage. The application of robust statistical techniques produces estimates of greater accuracy and precision than has previously been possible. Abundance estimates ranging from 5930 to 12 580 individuals, with coefficients of variation (CVs) from 0.07 to 0.39, were calculated for the West Indies breeding population using data from 1979 to 1993. The most precise estimate for the West Indies breeding population is 10 752 (CV = 0.068) for 1992 and 1993. Due to application of new analytical methods, these estimates are larger and more precise than those previously published from similar time periods. The average rate of increase for the West Indies breeding population over a 14 yr period was estimated to be 0.031 (SE = 0.005). The best available estimate for the entire North Atlantic population of humpback whales is 11 570 (95 % CI 10 290 to 13 390) based upon samples from 1992 and 1993. However, this estimate may be biased downwards to an unknown extent due to heterogeneity in capture probabilities that do not influence the West Indies estimates. |
format |
Article in Journal/Newspaper |
author |
Stevick, Peter T. Allen, Judith Clapham, Phillip J. Lien, John |
author_facet |
Stevick, Peter T. Allen, Judith Clapham, Phillip J. Lien, John |
author_sort |
Stevick, Peter T. |
title |
North Atlantic humpback whale abundance and rate of increase four decades after protection from whaling |
title_short |
North Atlantic humpback whale abundance and rate of increase four decades after protection from whaling |
title_full |
North Atlantic humpback whale abundance and rate of increase four decades after protection from whaling |
title_fullStr |
North Atlantic humpback whale abundance and rate of increase four decades after protection from whaling |
title_full_unstemmed |
North Atlantic humpback whale abundance and rate of increase four decades after protection from whaling |
title_sort |
north atlantic humpback whale abundance and rate of increase four decades after protection from whaling |
publisher |
Inter-Research |
publishDate |
2003 |
url |
https://research.library.mun.ca/538/ https://research.library.mun.ca/538/1/north_atlantic_humpback.pdf https://research.library.mun.ca/538/3/north_atlantic_humpback.pdf http://www.int-res.com/abstracts/meps/v258/p263-273/ |
genre |
Humpback Whale Megaptera novaeangliae North Atlantic |
genre_facet |
Humpback Whale Megaptera novaeangliae North Atlantic |
op_relation |
https://research.library.mun.ca/538/1/north_atlantic_humpback.pdf https://research.library.mun.ca/538/3/north_atlantic_humpback.pdf Stevick, Peter T. <https://research.library.mun.ca/view/creator_az/Stevick=3APeter_T=2E=3A=3A.html> and Allen, Judith <https://research.library.mun.ca/view/creator_az/Allen=3AJudith=3A=3A.html> and Clapham, Phillip J. <https://research.library.mun.ca/view/creator_az/Clapham=3APhillip_J=2E=3A=3A.html> and Lien, John <https://research.library.mun.ca/view/creator_az/Lien=3AJohn=3A=3A.html> (2003) North Atlantic humpback whale abundance and rate of increase four decades after protection from whaling. Marine Ecology Progress Series, 258. pp. 263-273. ISSN 1616-1599 |
op_rights |
cc_by_nc |
_version_ |
1810448798743265280 |