Data

2021 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia (NESP MaC 1.26)

University of Tasmania, Australia
863 linked Records:
Smith, J. and Double, M. ; SMITH, JOSH ; DOUBLE, MIKE
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=Dataset DOI&rft.title=2021 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia (NESP MaC 1.26)&rft.identifier=Dataset DOI&rft.publisher=Australian Antarctic Data Centre&rft.description=Aerial surveys of southern right whales (Eubalaena australis) were undertaken off the southern Australian coast to monitor the recovery of this endangered species following extreme 19th and 20th Century commercial whaling. The aerial survey was undertaken in the coastal waters from Perth (Western Australia) to Ceduna (South Australia) between the 12th and 17th August 2021, to maintain the annual series of surveys and inform the long-term population trend. The maximum whale counts for each leg of the survey flights between Cape Leeuwin and Ceduna, and consisted of a total 643 southern right whales sighted across the survey area (270 cow-calf pairs and 103 unaccompanied whales). The subsequent population estimate for the Australian ‘south-western’ population is 2,549 whales, which represents the majority of the Australian population given the very low numbers in the ‘south-eastern’ subpopulation. The population long-term trend data is indicating recent years (from 2007) are showing greater inter-annual variation in whale counts. To evaluate the recovery of the southern right whale population, it will be critical to collect long-term data on the annual variability in whale numbers related to the non-annual female breeding cycle and identify possible impacts on this by short-term climate dynamics, longer-term climate change and/or anthropogenic threats.Statement: Photo quality will be variable and requires assessment prior to assimilation into photo-identification catalogue http://data.marinemammals.gov.au/arwpic&rft.creator=Smith, J. and Double, M. &rft.creator=SMITH, JOSH &rft.creator=DOUBLE, MIKE &rft.date=2023&rft.coverage=115.83638800240442,-31.969671999663042 115.74526400003367,-32.47875400019689 115.60595999985412,-32.68149400024788 115.71151389964677,-33.28812859995486 115.36693740044075,-33.63946580030637 115.12199600021529,-33.62349800013255 115.02791600002344,-33.63380000036966 114.99030960040784,-33.98682409955251 115.16246400031343,-34.30611200006871 115.401211999834,-34.33392000000795 115.70035499118991,-34.43045852454122 116.12485720029963,-34.83544459988832 116.25545989995452,-34.87731369966747 116.37696490040992,-34.939738199658166 116.48214799983042,-35.016237999783804 116.53456980025611,-35.00474799962046 116.72545600009438,-34.975111999918795 117.15156893815607,-34.97406162144666 117.46448399983684,-34.9657259996551 117.69794926384746,-35.01112481795593 118.31393219121776,-34.85991594506474 118.52273997377085,-34.63687575711044 118.91599461785732,-34.41610516841877 119.20312374496494,-34.40358569902077 119.49961070017379,-34.31518329966951 119.58970200024714,-34.14213599977654 119.81651880030243,-33.98384559979456 120.04127240000128,-33.92311549988038 120.4228907035432,-33.920847386297794 121.19547945051625,-33.77633295250371 121.58177381770759,-33.822604186034326 121.82784200010826,-33.88947399982521 121.93467600029727,-33.82815599959963 122.0655118132197,-33.81682166578718 122.16376749427445,-33.9972407057939 122.36816380001937,-33.91242079987996 123.01993159966366,-33.85612349969972 123.13352170006645,-33.90384599979302 123.37146599975621,-33.89549820028167 123.63505019940726,-33.81103878041535 123.71509318090568,-33.69529822023662 123.97735000010243,-33.557350000202305 124.04570549391349,-33.187101290192345 124.27539404330048,-32.9508733790032 124.76261216781732,-32.83983213354611 125.900614504356,-32.27666014145233 126.22985701858657,-32.2139435785333 127.21060760915395,-32.19768535489516 128.65954242044643,-31.80360878621645 129.15125701849672,-31.670947738047637 130.40605009583533,-31.540651703613207 131.14290280012415,-31.464052999646192 131.56891010022105,-31.570123853133282 132.24952187203678,-31.99210191976772 132.54111905949708,-31.906818934945882 132.7833269739607,-31.972822153919182 133.16253097462481,-32.157474522231375 133.33268847309466,-32.18275269598007 133.471683577735,-32.12235813042332 133.61211400036086,-32.085680000231775 133.8223499998527,-32.23479599963565 133.95167000007052,-32.390243999660804 133.9124049673154,-32.449121276725506 134.18410730031178,-32.48272809982189 134.3634997147401,-32.76867771660329 133.22687474207578,-34.27828249733933 131.42973189631005,-33.69680507119705 130.80063625725757,-33.41234080348523 129.49896922165237,-33.46469869898572 127.68914146720499,-34.03556830863051 126.68528165272618,-34.061897594698166 125.85636061385128,-34.451719737875585 125.07601262508261,-35.21501283137701 124.40313053794398,-35.59430267233039 123.23227880082608,-35.818637721253765 121.0705866940208,-35.705238039703715 119.02885155855267,-36.71385065158625 118.29772736572545,-36.90855617592673 116.00978138929975,-36.791022003362734 114.99806459560466,-36.44826551973791 113.8996084091009,-35.86640206680192 113.14550978994487,-35.17274449106538 112.83138050770435,-34.275506345941096 112.93594424852836,-33.04339969963638 113.70455767369778,-31.871073156201135 115.83638800240442,-31.969671999663042&rft_rights=This metadata record is publicly available.&rft_rights=These data are publicly available for download from the provided URL.&rft_rights= https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=NESP_2021_SRW when using these data. http://creativecommons.org/licenses/by/4.0/).&rft_rights=Portable Network Graphic&rft_rights=https://i.creativecommons.org/l/by/3.0/88x31.png&rft_rights=Creative Commons by Attribution logo&rft_rights=Attribution 4.0 International (CC BY 4.0)&rft_rights=Legal code for Creative Commons by Attribution 4.0 International license&rft_rights=Attribution 4.0 International (CC BY 4.0)&rft_rights= https://creativecommons.org/licenses/by/4.0/legalcode&rft_subject=oceans&rft_subject=biota&rft_subject=EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS > BALEEN WHALES&rft_subject=SOUTHERN RIGHT WHALES&rft_subject=AERIAL SURVEY&rft_subject=CAMERAS&rft_subject=CESSNA 172 SKYHAWK&rft_subject=AMD/AU&rft_subject=AMD&rft_subject=CEOS&rft_subject=OCEAN > SOUTHERN OCEAN&rft_subject=CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA&rft_subject=GEOGRAPHIC REGION > POLAR&rft.type=dataset&rft.language=English Access the data
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This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=NESP_2021_SRW when using these data.
http://creativecommons.org/licenses/by/4.0/).

Attribution 4.0 International (CC BY 4.0)

https://creativecommons.org/licenses/by/4.0/legalcode

This metadata record is publicly available.

These data are publicly available for download from the provided URL.

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Brief description

Aerial surveys of southern right whales (Eubalaena australis) were undertaken off the southern Australian coast to monitor the recovery of this endangered species following extreme 19th and 20th Century commercial whaling. The aerial survey was undertaken in the coastal waters from Perth (Western Australia) to Ceduna (South Australia) between the 12th and 17th August 2021, to maintain the annual series of surveys and inform the long-term population trend. The maximum whale counts for each leg of the survey flights between Cape Leeuwin and Ceduna, and consisted of a total 643 southern right whales sighted across the survey area (270 cow-calf pairs and 103 unaccompanied whales). The subsequent population estimate for the Australian ‘south-western’ population is 2,549 whales, which represents the majority of the Australian population given the very low numbers in the ‘south-eastern’ subpopulation. The population long-term trend data is indicating recent years (from 2007) are showing greater inter-annual variation in whale counts. To evaluate the recovery of the southern right whale population, it will be critical to collect long-term data on the annual variability in whale numbers related to the non-annual female breeding cycle and identify possible impacts on this by short-term climate dynamics, longer-term climate change and/or anthropogenic threats.

Lineage

Statement: Photo quality will be variable and requires assessment prior to assimilation into photo-identification catalogue http://data.marinemammals.gov.au/arwpic

Notes

Purpose
Assessing the status and trend of Australia's southern right whale populations.

Data time period: 2021-08-12 to 2021-08-17

This dataset is part of a larger collection

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Subjects
AERIAL SURVEY | AMD | AMD/AU | CAMERAS | CEOS | CESSNA 172 SKYHAWK | CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA | EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS > BALEEN WHALES | GEOGRAPHIC REGION > POLAR | OCEAN > SOUTHERN OCEAN | SOUTHERN RIGHT WHALES | biota | oceans |

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Other Information
Download the dataset. (GET DATA > DIRECT DOWNLOAD)

uri : https://data.aad.gov.au/eds/5538/download

Identifiers
  • DOI : Dataset DOI
  • global : NESP_2021_SRW
  • global : NESP_2022_SRW
  • global : NESP_2019_SRW
  • global : NESP_2016_SRW
  • global : NESP_2015_SRW
  • global : NESP_2020_SRW
  • global : NESP_2017_SRW
  • global : NESP_2018_SRW
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