Acoustic occurrence of baleen whales, particularly blue, fin, and humpback whales, off eastern Canada, 2015-2017
Six baleen whale species occur off eastern Canada, but little is known of their year-round occurrence across this large region. This complicates identifying areas that are important to them and may require critical habitat designation, especially for those species considered at risk. This is particu...
Published in: | Endangered Species Research |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Inter-Research
2022
|
Subjects: | |
Online Access: | https://doi.org/10.3354/esr01176 https://doaj.org/article/e6fde459034a493f8d18e4c56b8391e1 |
id |
ftdoajarticles:oai:doaj.org/article:e6fde459034a493f8d18e4c56b8391e1 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:e6fde459034a493f8d18e4c56b8391e1 2023-05-15T15:36:24+02:00 Acoustic occurrence of baleen whales, particularly blue, fin, and humpback whales, off eastern Canada, 2015-2017 Y Delarue JJ H Moors-Murphy KA Kowarski GE Davis IR Urazghildiiev SB Martin 2022-04-01T00:00:00Z https://doi.org/10.3354/esr01176 https://doaj.org/article/e6fde459034a493f8d18e4c56b8391e1 EN eng Inter-Research https://www.int-res.com/abstracts/esr/v47/p265-289/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr01176 https://doaj.org/article/e6fde459034a493f8d18e4c56b8391e1 Endangered Species Research, Vol 47, Pp 265-289 (2022) Zoology QL1-991 Botany QK1-989 article 2022 ftdoajarticles https://doi.org/10.3354/esr01176 2022-12-30T22:38:13Z Six baleen whale species occur off eastern Canada, but little is known of their year-round occurrence across this large region. This complicates identifying areas that are important to them and may require critical habitat designation, especially for those species considered at risk. This is particularly true between fall and spring because of a lack of visual survey effort. The main objective of this paper is to provide a year-round and pluriannual description of the minimum acoustic occurrence of baleen whales, particularly blue Balaenoptera musculus, fin B. physalus, and humpback whales Megaptera novaeangliae. We deployed 25 acoustic recorders off eastern Canada between May 2015 and November 2017, and the data were analyzed using a combination of automated detectors and manual validation to identify vocalizations produced by these species. Blue, fin, and humpback whales occurred off eastern Canada year-round, a finding which contrasts the traditional seasonal latitude migration narrative for these species. The Scotian Shelf region and Flemish Pass-Orphan Basin areas seem particularly important for these animals and should be the focus of future research. Sei B. borealis, minke B. acutorostrata, and North Atlantic right whale Eubalaena glacialis vocalizations also occurred in the data but were not adequately captured by the adopted methodology. Coarse patterns of occurrence are presented for these species as a foundation for more detailed analyses. This study is the first to cover eastern Canadian waters for an extended continuous period and provides a baseline against which future changes can be assessed. Article in Journal/Newspaper Balaenoptera musculus baleen whale baleen whales Eubalaena glacialis Megaptera novaeangliae North Atlantic North Atlantic right whale Directory of Open Access Journals: DOAJ Articles Canada Endangered Species Research 47 265 289 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Zoology QL1-991 Botany QK1-989 |
spellingShingle |
Zoology QL1-991 Botany QK1-989 Y Delarue JJ H Moors-Murphy KA Kowarski GE Davis IR Urazghildiiev SB Martin Acoustic occurrence of baleen whales, particularly blue, fin, and humpback whales, off eastern Canada, 2015-2017 |
topic_facet |
Zoology QL1-991 Botany QK1-989 |
description |
Six baleen whale species occur off eastern Canada, but little is known of their year-round occurrence across this large region. This complicates identifying areas that are important to them and may require critical habitat designation, especially for those species considered at risk. This is particularly true between fall and spring because of a lack of visual survey effort. The main objective of this paper is to provide a year-round and pluriannual description of the minimum acoustic occurrence of baleen whales, particularly blue Balaenoptera musculus, fin B. physalus, and humpback whales Megaptera novaeangliae. We deployed 25 acoustic recorders off eastern Canada between May 2015 and November 2017, and the data were analyzed using a combination of automated detectors and manual validation to identify vocalizations produced by these species. Blue, fin, and humpback whales occurred off eastern Canada year-round, a finding which contrasts the traditional seasonal latitude migration narrative for these species. The Scotian Shelf region and Flemish Pass-Orphan Basin areas seem particularly important for these animals and should be the focus of future research. Sei B. borealis, minke B. acutorostrata, and North Atlantic right whale Eubalaena glacialis vocalizations also occurred in the data but were not adequately captured by the adopted methodology. Coarse patterns of occurrence are presented for these species as a foundation for more detailed analyses. This study is the first to cover eastern Canadian waters for an extended continuous period and provides a baseline against which future changes can be assessed. |
format |
Article in Journal/Newspaper |
author |
Y Delarue JJ H Moors-Murphy KA Kowarski GE Davis IR Urazghildiiev SB Martin |
author_facet |
Y Delarue JJ H Moors-Murphy KA Kowarski GE Davis IR Urazghildiiev SB Martin |
author_sort |
Y Delarue JJ |
title |
Acoustic occurrence of baleen whales, particularly blue, fin, and humpback whales, off eastern Canada, 2015-2017 |
title_short |
Acoustic occurrence of baleen whales, particularly blue, fin, and humpback whales, off eastern Canada, 2015-2017 |
title_full |
Acoustic occurrence of baleen whales, particularly blue, fin, and humpback whales, off eastern Canada, 2015-2017 |
title_fullStr |
Acoustic occurrence of baleen whales, particularly blue, fin, and humpback whales, off eastern Canada, 2015-2017 |
title_full_unstemmed |
Acoustic occurrence of baleen whales, particularly blue, fin, and humpback whales, off eastern Canada, 2015-2017 |
title_sort |
acoustic occurrence of baleen whales, particularly blue, fin, and humpback whales, off eastern canada, 2015-2017 |
publisher |
Inter-Research |
publishDate |
2022 |
url |
https://doi.org/10.3354/esr01176 https://doaj.org/article/e6fde459034a493f8d18e4c56b8391e1 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Balaenoptera musculus baleen whale baleen whales Eubalaena glacialis Megaptera novaeangliae North Atlantic North Atlantic right whale |
genre_facet |
Balaenoptera musculus baleen whale baleen whales Eubalaena glacialis Megaptera novaeangliae North Atlantic North Atlantic right whale |
op_source |
Endangered Species Research, Vol 47, Pp 265-289 (2022) |
op_relation |
https://www.int-res.com/abstracts/esr/v47/p265-289/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr01176 https://doaj.org/article/e6fde459034a493f8d18e4c56b8391e1 |
op_doi |
https://doi.org/10.3354/esr01176 |
container_title |
Endangered Species Research |
container_volume |
47 |
container_start_page |
265 |
op_container_end_page |
289 |
_version_ |
1766366749357244416 |