Easily measured call attributes can detect vocal differences between Weddell seals from two areas (Casey and Davis).
Underwater vocalisations of Weddell seals were recorded at Casey (1997) and Davis (1992 and 1997) Antarctica. The goal of the study was to determine if it would be possible to identify geographic variations between the Casey and Davis seals using easily measured, narrow bandwidth calls (and not broa...
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Australian Antarctic Data Centre
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Online Access: | https://researchdata.ands.org.au/easily-measured-attributes-casey-davis/699741 https://data.aad.gov.au/metadata/records/ASAC_2122 http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::699741 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS CALL NUMBER CALL TYPE DURATION ELEMENTS FREQUENCY GEOGRAPHIC VARIATION LEPTONYCHOTES WEDDELLII LOCATION METHODOLOGY OBSERVER OVERLAP STATION TIME VOCALISATIONS WEDDELL SEAL HYDROPHONES FIELD SURVEYS OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA > Casey Davis GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS CALL NUMBER CALL TYPE DURATION ELEMENTS FREQUENCY GEOGRAPHIC VARIATION LEPTONYCHOTES WEDDELLII LOCATION METHODOLOGY OBSERVER OVERLAP STATION TIME VOCALISATIONS WEDDELL SEAL HYDROPHONES FIELD SURVEYS OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA > Casey Davis GEOGRAPHIC REGION > POLAR Easily measured call attributes can detect vocal differences between Weddell seals from two areas (Casey and Davis). |
topic_facet |
biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS CALL NUMBER CALL TYPE DURATION ELEMENTS FREQUENCY GEOGRAPHIC VARIATION LEPTONYCHOTES WEDDELLII LOCATION METHODOLOGY OBSERVER OVERLAP STATION TIME VOCALISATIONS WEDDELL SEAL HYDROPHONES FIELD SURVEYS OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA > Casey Davis GEOGRAPHIC REGION > POLAR |
description |
Underwater vocalisations of Weddell seals were recorded at Casey (1997) and Davis (1992 and 1997) Antarctica. The goal of the study was to determine if it would be possible to identify geographic variations between the Casey and Davis seals using easily measured, narrow bandwidth calls (and not broadband or very short duration calls). Two observers measured the starting and ending frequency (Hz), duration (msec) and number of elements (discrete sounds) of four categories of calls; long duration trills, shorter descending frequency whistles, ascending frequency whistles and constant frequency mews. The statistical analyses considered all calls per base, single and multiple element calls, and individual call types. Except for trills, discriminant function analysis indicated less variation between the call attributes from Davis in 1992 and 1997 than between either of the Davis data sets and Casey 1997. The data set contains measures from 2966 calls; approximately 1000 calls per base and year. Up to 100 consecutive calls were measured from each recording location per day of recording so the data set indicates the relative occurrence of each of the call types per base and year. There were very few ascending whistles at Casey. All of the trills and mews contained a single element. This data set was published in Bioacoustics 11: 211-222. The fields in this dataset are: Observer Station Location Time Call Number Call Type Frequency Duration Elements Overlap In 2011, another download file was added to this record, providing recording locations made during the project in 2010. Furthermore: In 1997 Daniela Simon made some opportunistic recordings for the project near Casey. The recording locations were: Berkley Island 110 38'E, 66 12' 40"S Herring Island 110 40'E, 66 25'S O'Brien Bay 110 31'E, 66 18' 30"S Eyres Bay 110 32'E, 66 29" 20"S The Davis sites: IN 1990 THERE WAS ONLY ONE RECORDING SITE - 78 12.5' E, 68 31.6' S IN 1997 RECORDINGS WERE MADE AT THE FOLLOWING SITES EAST SIDE OF WEDDELL ARM - 78 07.55' E 68 32.17' S PARTIZAN ISLAND - 78 13.66' E 68 29.57' S LONG FJORD - 78 18.95' E 68 30.24' S TOPOGRAV ISLAND - 78 12.40' E 68 29.33'S OFFSHORE - 77 58.73'E 68 26.35'S TRYNE BAY - 78 26.25'E 68 24.87'S LUCAS ISLAND - 77 57.00'E 68 30.36'S WYATT EARP ISLANDS - 78 31.51'E 68 21.31'S ================================================================================ The attached document is "a listing of the Weddell seal breeding locations near Mawson where Patrick Abgrall in 2000 and Phil Rouget in 2002 made underwater recordings". The sound recording effort in 2000 was not as high as it was in 2002, hence fewer locations are listed. The Abgrall sites are referred to in the paper 'Variation of Weddell seal underwater vocalizations over mesogeographic ranges' that Abgrall, Terhune Burton co-authored, published in Aquatic mammals in 2003. This paper also refers to the Casey and Davis sites above. The Rouget sites relate to the metadata record 'Weddell Seal underwater calling rates during the winter and spring near Mawson Station, Antarctica' Entry ID: ASAC_1132-1 In general the seals can create breathing holes in areas where tide cracks form, namely close to grounded icebergs, the shoreline and islands. I doubt that they could/would create breathing holes through solid 2 m ice. |
author2 |
TERHUNE, JOHN MOORE (hasPrincipalInvestigator) TERHUNE, JOHN MOORE (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Easily measured call attributes can detect vocal differences between Weddell seals from two areas (Casey and Davis). |
title_short |
Easily measured call attributes can detect vocal differences between Weddell seals from two areas (Casey and Davis). |
title_full |
Easily measured call attributes can detect vocal differences between Weddell seals from two areas (Casey and Davis). |
title_fullStr |
Easily measured call attributes can detect vocal differences between Weddell seals from two areas (Casey and Davis). |
title_full_unstemmed |
Easily measured call attributes can detect vocal differences between Weddell seals from two areas (Casey and Davis). |
title_sort |
easily measured call attributes can detect vocal differences between weddell seals from two areas (casey and davis). |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/easily-measured-attributes-casey-davis/699741 https://data.aad.gov.au/metadata/records/ASAC_2122 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-66.2; southlimit=-68.5666; westlimit=78.0833; eastLimit=110.6666; projection=WGS84 Temporal: From 1992-11-13 to 2010-12-31 |
long_lat |
ENVELOPE(166.733,166.733,-72.550,-72.550) ENVELOPE(62.874,62.874,-67.603,-67.603) ENVELOPE(-67.686,-67.686,-67.338,-67.338) ENVELOPE(110.524,110.524,-66.302,-66.302) ENVELOPE(78.333,78.333,-68.500,-68.500) ENVELOPE(77.955,77.955,-68.504,-68.504) ENVELOPE(-86.417,-86.417,-77.567,-77.567) ENVELOPE(110.633,110.633,-66.406,-66.406) ENVELOPE(78.540,78.540,-68.359,-68.359) ENVELOPE(110.642,110.642,-66.216,-66.216) ENVELOPE(78.167,78.167,-68.517,-68.517) ENVELOPE(78.115,78.115,-68.536,-68.536) ENVELOPE(110.467,110.467,-66.483,-66.483) ENVELOPE(78.467,78.467,-68.400,-68.400) ENVELOPE(78.183,78.183,-68.500,-68.500) ENVELOPE(78.0833,110.6666,-66.2,-68.5666) |
geographic |
Southern Ocean Weddell Burton Mawson Station Wyatt O'Brien Bay Long Fjord Lucas Island Wyatt Earp Herring Island Wyatt Earp Islands Berkley Island Partizan Island Weddell Arm Eyres Bay Tryne Bay Partizan |
geographic_facet |
Southern Ocean Weddell Burton Mawson Station Wyatt O'Brien Bay Long Fjord Lucas Island Wyatt Earp Herring Island Wyatt Earp Islands Berkley Island Partizan Island Weddell Arm Eyres Bay Tryne Bay Partizan |
genre |
Antarc* Antarctica Berkley Island Herring Island Lucas Island Partizan Island Southern Ocean Weddell Seal Weddell Seals Wyatt Earp Islands |
genre_facet |
Antarc* Antarctica Berkley Island Herring Island Lucas Island Partizan Island Southern Ocean Weddell Seal Weddell Seals Wyatt Earp Islands |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/easily-measured-attributes-casey-davis/699741 ca679d45-a291-4570-94cf-eb2bae0f724c ASAC_2122 https://data.aad.gov.au/metadata/records/ASAC_2122 http://nla.gov.au/nla.party-617536 |
_version_ |
1766245846460923904 |
spelling |
ftands:oai:ands.org.au::699741 2023-05-15T13:46:57+02:00 Easily measured call attributes can detect vocal differences between Weddell seals from two areas (Casey and Davis). TERHUNE, JOHN MOORE (hasPrincipalInvestigator) TERHUNE, JOHN MOORE (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-66.2; southlimit=-68.5666; westlimit=78.0833; eastLimit=110.6666; projection=WGS84 Temporal: From 1992-11-13 to 2010-12-31 https://researchdata.ands.org.au/easily-measured-attributes-casey-davis/699741 https://data.aad.gov.au/metadata/records/ASAC_2122 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/easily-measured-attributes-casey-davis/699741 ca679d45-a291-4570-94cf-eb2bae0f724c ASAC_2122 https://data.aad.gov.au/metadata/records/ASAC_2122 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre biota oceans ANIMALS/VERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION MAMMALS CALL NUMBER CALL TYPE DURATION ELEMENTS FREQUENCY GEOGRAPHIC VARIATION LEPTONYCHOTES WEDDELLII LOCATION METHODOLOGY OBSERVER OVERLAP STATION TIME VOCALISATIONS WEDDELL SEAL HYDROPHONES FIELD SURVEYS OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA > Casey Davis GEOGRAPHIC REGION > POLAR dataset ftands 2020-01-05T21:16:37Z Underwater vocalisations of Weddell seals were recorded at Casey (1997) and Davis (1992 and 1997) Antarctica. The goal of the study was to determine if it would be possible to identify geographic variations between the Casey and Davis seals using easily measured, narrow bandwidth calls (and not broadband or very short duration calls). Two observers measured the starting and ending frequency (Hz), duration (msec) and number of elements (discrete sounds) of four categories of calls; long duration trills, shorter descending frequency whistles, ascending frequency whistles and constant frequency mews. The statistical analyses considered all calls per base, single and multiple element calls, and individual call types. Except for trills, discriminant function analysis indicated less variation between the call attributes from Davis in 1992 and 1997 than between either of the Davis data sets and Casey 1997. The data set contains measures from 2966 calls; approximately 1000 calls per base and year. Up to 100 consecutive calls were measured from each recording location per day of recording so the data set indicates the relative occurrence of each of the call types per base and year. There were very few ascending whistles at Casey. All of the trills and mews contained a single element. This data set was published in Bioacoustics 11: 211-222. The fields in this dataset are: Observer Station Location Time Call Number Call Type Frequency Duration Elements Overlap In 2011, another download file was added to this record, providing recording locations made during the project in 2010. Furthermore: In 1997 Daniela Simon made some opportunistic recordings for the project near Casey. The recording locations were: Berkley Island 110 38'E, 66 12' 40"S Herring Island 110 40'E, 66 25'S O'Brien Bay 110 31'E, 66 18' 30"S Eyres Bay 110 32'E, 66 29" 20"S The Davis sites: IN 1990 THERE WAS ONLY ONE RECORDING SITE - 78 12.5' E, 68 31.6' S IN 1997 RECORDINGS WERE MADE AT THE FOLLOWING SITES EAST SIDE OF WEDDELL ARM - 78 07.55' E 68 32.17' S PARTIZAN ISLAND - 78 13.66' E 68 29.57' S LONG FJORD - 78 18.95' E 68 30.24' S TOPOGRAV ISLAND - 78 12.40' E 68 29.33'S OFFSHORE - 77 58.73'E 68 26.35'S TRYNE BAY - 78 26.25'E 68 24.87'S LUCAS ISLAND - 77 57.00'E 68 30.36'S WYATT EARP ISLANDS - 78 31.51'E 68 21.31'S ================================================================================ The attached document is "a listing of the Weddell seal breeding locations near Mawson where Patrick Abgrall in 2000 and Phil Rouget in 2002 made underwater recordings". The sound recording effort in 2000 was not as high as it was in 2002, hence fewer locations are listed. The Abgrall sites are referred to in the paper 'Variation of Weddell seal underwater vocalizations over mesogeographic ranges' that Abgrall, Terhune Burton co-authored, published in Aquatic mammals in 2003. This paper also refers to the Casey and Davis sites above. The Rouget sites relate to the metadata record 'Weddell Seal underwater calling rates during the winter and spring near Mawson Station, Antarctica' Entry ID: ASAC_1132-1 In general the seals can create breathing holes in areas where tide cracks form, namely close to grounded icebergs, the shoreline and islands. I doubt that they could/would create breathing holes through solid 2 m ice. Dataset Antarc* Antarctica Berkley Island Herring Island Lucas Island Partizan Island Southern Ocean Weddell Seal Weddell Seals Wyatt Earp Islands Research Data Australia (Australian National Data Service - ANDS) Southern Ocean Weddell Burton ENVELOPE(166.733,166.733,-72.550,-72.550) Mawson Station ENVELOPE(62.874,62.874,-67.603,-67.603) Wyatt ENVELOPE(-67.686,-67.686,-67.338,-67.338) O'Brien Bay ENVELOPE(110.524,110.524,-66.302,-66.302) Long Fjord ENVELOPE(78.333,78.333,-68.500,-68.500) Lucas Island ENVELOPE(77.955,77.955,-68.504,-68.504) Wyatt Earp ENVELOPE(-86.417,-86.417,-77.567,-77.567) Herring Island ENVELOPE(110.633,110.633,-66.406,-66.406) Wyatt Earp Islands ENVELOPE(78.540,78.540,-68.359,-68.359) Berkley Island ENVELOPE(110.642,110.642,-66.216,-66.216) Partizan Island ENVELOPE(78.167,78.167,-68.517,-68.517) Weddell Arm ENVELOPE(78.115,78.115,-68.536,-68.536) Eyres Bay ENVELOPE(110.467,110.467,-66.483,-66.483) Tryne Bay ENVELOPE(78.467,78.467,-68.400,-68.400) Partizan ENVELOPE(78.183,78.183,-68.500,-68.500) ENVELOPE(78.0833,110.6666,-66.2,-68.5666) |