2017 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia
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 surv...
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Online Access: | https://researchdata.edu.au/2017-aerial-survey-southern-australia/967246 https://doi.org/10.4225/15/5ab1d067a991b https://data.aad.gov.au/metadata/records/NESP_2017_SRW https://data.aad.gov.au/aadc/metadata/metadata_redirect.cfm?md=/AMD/AU/NESP_2017_SRW http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::967246 2023-05-15T15:37:13+02:00 2017 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia BANNISTER, JOHN (hasPrincipalInvestigator) DOUBLE, MIKE (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-29.993; southlimit=-36.59789; westlimit=113.02734; eastLimit=138.69141; projection=WGS84 Temporal: From 2017-08-23 to 2017-08-27 https://researchdata.edu.au/2017-aerial-survey-southern-australia/967246 https://doi.org/10.4225/15/5ab1d067a991b https://data.aad.gov.au/metadata/records/NESP_2017_SRW https://data.aad.gov.au/aadc/metadata/metadata_redirect.cfm?md=/AMD/AU/NESP_2017_SRW http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.edu.au/2017-aerial-survey-southern-australia/967246 881d2cde-26af-44e9-b695-6c3b458fafc2 doi:10.4225/15/5ab1d067a991b NESP_2017_SRW https://data.aad.gov.au/metadata/records/NESP_2017_SRW https://data.aad.gov.au/aadc/metadata/metadata_redirect.cfm?md=/AMD/AU/NESP_2017_SRW http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre biota oceans BALEEN WHALES EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CETACEANS Southern Right Whales Survey CANON CESSNA 172 SKYHAWK GEOGRAPHIC REGION > POLAR CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA OCEAN > SOUTHERN OCEAN dataset ftands https://doi.org/10.4225/15/5ab1d067a991b 2021-07-05T22:22:09Z 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 Research Data Australia (Australian National Data Service - ANDS) New Zealand Southern Ocean ENVELOPE(113.02734,138.69141,-29.993,-36.59789) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans BALEEN WHALES EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CETACEANS Southern Right Whales Survey CANON CESSNA 172 SKYHAWK GEOGRAPHIC REGION > POLAR CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA OCEAN > SOUTHERN OCEAN |
spellingShingle |
biota oceans BALEEN WHALES EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CETACEANS Southern Right Whales Survey CANON CESSNA 172 SKYHAWK 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 BALEEN WHALES EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CETACEANS Southern Right Whales Survey CANON CESSNA 172 SKYHAWK GEOGRAPHIC REGION > POLAR CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA OCEAN > SOUTHERN OCEAN |
description |
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 |
author2 |
BANNISTER, JOHN (hasPrincipalInvestigator) DOUBLE, MIKE (processor) Australian Antarctic Data Centre (publisher) |
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 Antarctic Data Centre |
url |
https://researchdata.edu.au/2017-aerial-survey-southern-australia/967246 https://doi.org/10.4225/15/5ab1d067a991b https://data.aad.gov.au/metadata/records/NESP_2017_SRW https://data.aad.gov.au/aadc/metadata/metadata_redirect.cfm?md=/AMD/AU/NESP_2017_SRW http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-29.993; southlimit=-36.59789; westlimit=113.02734; eastLimit=138.69141; projection=WGS84 Temporal: From 2017-08-23 to 2017-08-27 |
long_lat |
ENVELOPE(113.02734,138.69141,-29.993,-36.59789) |
geographic |
New Zealand Southern Ocean |
geographic_facet |
New Zealand Southern Ocean |
genre |
baleen whales Southern Ocean |
genre_facet |
baleen whales Southern Ocean |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.edu.au/2017-aerial-survey-southern-australia/967246 881d2cde-26af-44e9-b695-6c3b458fafc2 doi:10.4225/15/5ab1d067a991b NESP_2017_SRW https://data.aad.gov.au/metadata/records/NESP_2017_SRW https://data.aad.gov.au/aadc/metadata/metadata_redirect.cfm?md=/AMD/AU/NESP_2017_SRW http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.4225/15/5ab1d067a991b |
_version_ |
1766367682507046912 |