Southern right whales (Eubalaena australis) return to a former wintering calving ground: Fowlers Bay, South Australia
Southern right whales (SRW), Eubalaena australis, have reoccupied historically important winter habitat ranges (calving grounds) in recent years along the southern Australian coast. Here we present findings of increased abundance of SRW at Fowlers Bay, South Australia, a previous shore‐based whaling...
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Edith Cowan University, Research Online, Perth, Western Australia
2019
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Online Access: | https://ro.ecu.edu.au/ecuworkspost2013/7154 https://doi.org/10.1111/mms.12611 |
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ftedithcowan:oai:ro.ecu.edu.au:ecuworkspost2013-8159 2023-05-15T18:26:17+02:00 Southern right whales (Eubalaena australis) return to a former wintering calving ground: Fowlers Bay, South Australia Charlton, Claire Ward, Rhianne McCauley, Robert D. Brownell Jr, Robert L. Guggenheimer, Sacha Salgado Kent, Chandra P. Bannister, John L. 2019-01-01T08:00:00Z https://ro.ecu.edu.au/ecuworkspost2013/7154 https://doi.org/10.1111/mms.12611 unknown Edith Cowan University, Research Online, Perth, Western Australia https://ro.ecu.edu.au/ecuworkspost2013/7154 https://doi.org/10.1111/mms.12611 subscription content Research outputs 2014 to 2021 abundance Australia calving conservation distribution Eubalaena australis photo identification southern right whale Animal Sciences Life Sciences Marine Biology text 2019 ftedithcowan https://doi.org/10.1111/mms.12611 2022-03-19T23:51:48Z Southern right whales (SRW), Eubalaena australis, have reoccupied historically important winter habitat ranges (calving grounds) in recent years along the southern Australian coast. Here we present findings of increased abundance of SRW at Fowlers Bay, South Australia, a previous shore‐based whaling station. This study investigates: SRW inter‐ and intraseasonal trends in relative abundance; changes to the relative proportion of the southwestern subpopulation represented by SRW at Fowlers Bay; distribution; and occupancy. Sighting and photo identification data were collected during annual aerial (1993–2016) and vessel surveys (2014–2016). The total number of female and calf pairs was 3 during 1993–2003 and 63 during 2004–2014. Despite high variability in annual relative abundance, the rate of mean increase from 1993 to 2016 (29.0%/yr, 95% CI = 0, 54.2) exceeded the maximum biological rate for the species (6%–7%/yr). Peak relative abundance was recorded in July and August. SRW at Fowlers Bay represent an increasing proportion of the southwestern subpopulation (range = 0.9%–7.4%). Mean occupancy was 23 d (range = 1–75) for female and calf pairs and 2 d (range = 1–15) for unaccompanied adults. Reduced sightings in 2015 and 2016 demonstrate plasticity in SRW abundance at Fowlers Bay. Research into the movement and connectivity of SRW is needed to understand drivers of habitat dispersal in Australia. Text Southern Right Whale Edith Cowan University (ECU, Australia): Research Online Marine Mammal Science 35 4 1438 1462 |
institution |
Open Polar |
collection |
Edith Cowan University (ECU, Australia): Research Online |
op_collection_id |
ftedithcowan |
language |
unknown |
topic |
abundance Australia calving conservation distribution Eubalaena australis photo identification southern right whale Animal Sciences Life Sciences Marine Biology |
spellingShingle |
abundance Australia calving conservation distribution Eubalaena australis photo identification southern right whale Animal Sciences Life Sciences Marine Biology Charlton, Claire Ward, Rhianne McCauley, Robert D. Brownell Jr, Robert L. Guggenheimer, Sacha Salgado Kent, Chandra P. Bannister, John L. Southern right whales (Eubalaena australis) return to a former wintering calving ground: Fowlers Bay, South Australia |
topic_facet |
abundance Australia calving conservation distribution Eubalaena australis photo identification southern right whale Animal Sciences Life Sciences Marine Biology |
description |
Southern right whales (SRW), Eubalaena australis, have reoccupied historically important winter habitat ranges (calving grounds) in recent years along the southern Australian coast. Here we present findings of increased abundance of SRW at Fowlers Bay, South Australia, a previous shore‐based whaling station. This study investigates: SRW inter‐ and intraseasonal trends in relative abundance; changes to the relative proportion of the southwestern subpopulation represented by SRW at Fowlers Bay; distribution; and occupancy. Sighting and photo identification data were collected during annual aerial (1993–2016) and vessel surveys (2014–2016). The total number of female and calf pairs was 3 during 1993–2003 and 63 during 2004–2014. Despite high variability in annual relative abundance, the rate of mean increase from 1993 to 2016 (29.0%/yr, 95% CI = 0, 54.2) exceeded the maximum biological rate for the species (6%–7%/yr). Peak relative abundance was recorded in July and August. SRW at Fowlers Bay represent an increasing proportion of the southwestern subpopulation (range = 0.9%–7.4%). Mean occupancy was 23 d (range = 1–75) for female and calf pairs and 2 d (range = 1–15) for unaccompanied adults. Reduced sightings in 2015 and 2016 demonstrate plasticity in SRW abundance at Fowlers Bay. Research into the movement and connectivity of SRW is needed to understand drivers of habitat dispersal in Australia. |
format |
Text |
author |
Charlton, Claire Ward, Rhianne McCauley, Robert D. Brownell Jr, Robert L. Guggenheimer, Sacha Salgado Kent, Chandra P. Bannister, John L. |
author_facet |
Charlton, Claire Ward, Rhianne McCauley, Robert D. Brownell Jr, Robert L. Guggenheimer, Sacha Salgado Kent, Chandra P. Bannister, John L. |
author_sort |
Charlton, Claire |
title |
Southern right whales (Eubalaena australis) return to a former wintering calving ground: Fowlers Bay, South Australia |
title_short |
Southern right whales (Eubalaena australis) return to a former wintering calving ground: Fowlers Bay, South Australia |
title_full |
Southern right whales (Eubalaena australis) return to a former wintering calving ground: Fowlers Bay, South Australia |
title_fullStr |
Southern right whales (Eubalaena australis) return to a former wintering calving ground: Fowlers Bay, South Australia |
title_full_unstemmed |
Southern right whales (Eubalaena australis) return to a former wintering calving ground: Fowlers Bay, South Australia |
title_sort |
southern right whales (eubalaena australis) return to a former wintering calving ground: fowlers bay, south australia |
publisher |
Edith Cowan University, Research Online, Perth, Western Australia |
publishDate |
2019 |
url |
https://ro.ecu.edu.au/ecuworkspost2013/7154 https://doi.org/10.1111/mms.12611 |
genre |
Southern Right Whale |
genre_facet |
Southern Right Whale |
op_source |
Research outputs 2014 to 2021 |
op_relation |
https://ro.ecu.edu.au/ecuworkspost2013/7154 https://doi.org/10.1111/mms.12611 |
op_rights |
subscription content |
op_doi |
https://doi.org/10.1111/mms.12611 |
container_title |
Marine Mammal Science |
container_volume |
35 |
container_issue |
4 |
container_start_page |
1438 |
op_container_end_page |
1462 |
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1766208242665390080 |