2017 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia
Progress Code: completed Statement: Photo quality will be variable and requires assessment prior to assimilation into photo-identification catalogue http://data.marinemammals.gov.au/arwpic Purpose Assessing the status and trend of Australia's southern right whale populations. These aerial surve...
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ftands:oai:ands.org.au::2818032 2023-10-09T21:50:10+02:00 2017 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia Spatial: westlimit=113.02734; southlimit=-36.59789; eastlimit=138.69141; northlimit=-29.993 Temporal: From 2017-08-23 to 2017-08-27 https://researchdata.edu.au/2017-aerial-survey-southern-australia/2818032 unknown Australian Ocean Data Network https://researchdata.edu.au/2017-aerial-survey-southern-australia/2818032 NESP_2017_SRW Dataset DOI AU/AADC > Australian Antarctic Data Centre, Australia biota oceans EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS > BALEEN WHALES Southern Right Whales Survey CAMERAS CESSNA 172 SKYHAWK AMD/AU AMD CEOS GEOGRAPHIC REGION > POLAR CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA OCEAN > SOUTHERN OCEAN dataset ftands 2023-09-18T22:44:04Z Progress Code: completed Statement: Photo quality will be variable and requires assessment prior to assimilation into photo-identification catalogue http://data.marinemammals.gov.au/arwpic Purpose Assessing the status and trend of Australia's southern right whale populations. These aerial survey data of southern right whales (Eubalaena australis) off southern Australia were collected in August 2017. Such annual flights in winter/spring between Cape Leeuwin (Western Australia) and Ceduna (South Australia) have now been conducted over a 25-year period 1993-2017. These surveys have provided evidence of a population trend of around 6% per year, and a current (at 2014) population size of approximately 2300 of what has been regarded as the 'western' Australian right whale subpopulation. With estimated population size in the low thousands, it is presumed to be still well below carrying capacity. No trend information is available for the 'eastern' subpopulation of animals occurring around the remainder of the southern Australian Coast, to at least as far as Sydney, New South Wales and the populations size is relatively small, probably in the low hundreds. A lower than expected 'western' count in 2015 gives weak evidence that the growth rate may be starting to show signs of slowing, though an exponential increase remains the best description of the data. If the low 2015 count is anomalous, future counts may be expected to show an exponential increase, but if it is not, modelling growth as other than simple exponential may be useful to explore in future Dataset baleen whales Southern Ocean Southern Right Whale Research Data Australia (Australian National Data Service - ANDS) Southern Ocean New Zealand |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS > BALEEN WHALES Southern Right Whales Survey CAMERAS CESSNA 172 SKYHAWK AMD/AU AMD CEOS GEOGRAPHIC REGION > POLAR CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA OCEAN > SOUTHERN OCEAN |
spellingShingle |
biota oceans EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS > BALEEN WHALES Southern Right Whales Survey CAMERAS CESSNA 172 SKYHAWK AMD/AU AMD CEOS GEOGRAPHIC REGION > POLAR CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA OCEAN > SOUTHERN OCEAN 2017 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia |
topic_facet |
biota oceans EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS > BALEEN WHALES Southern Right Whales Survey CAMERAS CESSNA 172 SKYHAWK AMD/AU AMD CEOS GEOGRAPHIC REGION > POLAR CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA OCEAN > SOUTHERN OCEAN |
description |
Progress Code: completed Statement: Photo quality will be variable and requires assessment prior to assimilation into photo-identification catalogue http://data.marinemammals.gov.au/arwpic Purpose Assessing the status and trend of Australia's southern right whale populations. These aerial survey data of southern right whales (Eubalaena australis) off southern Australia were collected in August 2017. Such annual flights in winter/spring between Cape Leeuwin (Western Australia) and Ceduna (South Australia) have now been conducted over a 25-year period 1993-2017. These surveys have provided evidence of a population trend of around 6% per year, and a current (at 2014) population size of approximately 2300 of what has been regarded as the 'western' Australian right whale subpopulation. With estimated population size in the low thousands, it is presumed to be still well below carrying capacity. No trend information is available for the 'eastern' subpopulation of animals occurring around the remainder of the southern Australian Coast, to at least as far as Sydney, New South Wales and the populations size is relatively small, probably in the low hundreds. A lower than expected 'western' count in 2015 gives weak evidence that the growth rate may be starting to show signs of slowing, though an exponential increase remains the best description of the data. If the low 2015 count is anomalous, future counts may be expected to show an exponential increase, but if it is not, modelling growth as other than simple exponential may be useful to explore in future |
format |
Dataset |
title |
2017 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia |
title_short |
2017 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia |
title_full |
2017 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia |
title_fullStr |
2017 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia |
title_full_unstemmed |
2017 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia |
title_sort |
2017 aerial survey data of southern right whales (eubalaena australis) off southern australia |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/2017-aerial-survey-southern-australia/2818032 |
op_coverage |
Spatial: westlimit=113.02734; southlimit=-36.59789; eastlimit=138.69141; northlimit=-29.993 Temporal: From 2017-08-23 to 2017-08-27 |
geographic |
Southern Ocean New Zealand |
geographic_facet |
Southern Ocean New Zealand |
genre |
baleen whales Southern Ocean Southern Right Whale |
genre_facet |
baleen whales Southern Ocean Southern Right Whale |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/2017-aerial-survey-southern-australia/2818032 NESP_2017_SRW Dataset DOI |
_version_ |
1779313229289226240 |