Variations in Vocalizations of Fin Whales, Balaenoptera physalus, in the St. Lawrence River ...
Recordings were made of vocalizations from fin whales, Balaenoptera physalus from a fixed hydrophone in the St. Lawrence River between 28 June and 27 September 1979. Land-based observers monitored activity from a hillside hut while recordings were being made from a shoreline site. Photographs of dor...
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Digital Repository at the University of Maryland
1980
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Online Access: | https://dx.doi.org/10.13016/mzia-ph9q https://drum.lib.umd.edu/handle/1903/32590 |
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ftdatacite:10.13016/mzia-ph9q 2024-09-09T19:31:39+00:00 Variations in Vocalizations of Fin Whales, Balaenoptera physalus, in the St. Lawrence River ... Edds, Peggy Louise 1980 https://dx.doi.org/10.13016/mzia-ph9q https://drum.lib.umd.edu/handle/1903/32590 unknown Digital Repository at the University of Maryland Thesis article-journal Text ScholarlyArticle 1980 ftdatacite https://doi.org/10.13016/mzia-ph9q 2024-07-02T10:45:03Z Recordings were made of vocalizations from fin whales, Balaenoptera physalus from a fixed hydrophone in the St. Lawrence River between 28 June and 27 September 1979. Land-based observers monitored activity from a hillside hut while recordings were being made from a shoreline site. Photographs of dorsal fin variations were used to identify distinctive individuals. The 1522 sounds recorded were classified into 11 categories based on frequency and temporal characteristics. The predominant call was a descending sweep of frequencies. Parameters measured for this downsweep exhibited a dichotomy of characteristics which indicates calls with initial frequencies below 40 Hz have less variability than calls with initial frequencies above 40 Hz. In general, solitary animals produced primarily the lower frequency downsweeps. Higher frequency downsweeps were recorded from pairs or trios of fin whales. Solitary individuals did not exhibit unique variations in downsweep parameters. No clusters of values which might ... Thesis Balaenoptera physalus DataCite Lawrence River ENVELOPE(-115.002,-115.002,58.384,58.384) |
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ftdatacite |
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unknown |
description |
Recordings were made of vocalizations from fin whales, Balaenoptera physalus from a fixed hydrophone in the St. Lawrence River between 28 June and 27 September 1979. Land-based observers monitored activity from a hillside hut while recordings were being made from a shoreline site. Photographs of dorsal fin variations were used to identify distinctive individuals. The 1522 sounds recorded were classified into 11 categories based on frequency and temporal characteristics. The predominant call was a descending sweep of frequencies. Parameters measured for this downsweep exhibited a dichotomy of characteristics which indicates calls with initial frequencies below 40 Hz have less variability than calls with initial frequencies above 40 Hz. In general, solitary animals produced primarily the lower frequency downsweeps. Higher frequency downsweeps were recorded from pairs or trios of fin whales. Solitary individuals did not exhibit unique variations in downsweep parameters. No clusters of values which might ... |
format |
Thesis |
author |
Edds, Peggy Louise |
spellingShingle |
Edds, Peggy Louise Variations in Vocalizations of Fin Whales, Balaenoptera physalus, in the St. Lawrence River ... |
author_facet |
Edds, Peggy Louise |
author_sort |
Edds, Peggy Louise |
title |
Variations in Vocalizations of Fin Whales, Balaenoptera physalus, in the St. Lawrence River ... |
title_short |
Variations in Vocalizations of Fin Whales, Balaenoptera physalus, in the St. Lawrence River ... |
title_full |
Variations in Vocalizations of Fin Whales, Balaenoptera physalus, in the St. Lawrence River ... |
title_fullStr |
Variations in Vocalizations of Fin Whales, Balaenoptera physalus, in the St. Lawrence River ... |
title_full_unstemmed |
Variations in Vocalizations of Fin Whales, Balaenoptera physalus, in the St. Lawrence River ... |
title_sort |
variations in vocalizations of fin whales, balaenoptera physalus, in the st. lawrence river ... |
publisher |
Digital Repository at the University of Maryland |
publishDate |
1980 |
url |
https://dx.doi.org/10.13016/mzia-ph9q https://drum.lib.umd.edu/handle/1903/32590 |
long_lat |
ENVELOPE(-115.002,-115.002,58.384,58.384) |
geographic |
Lawrence River |
geographic_facet |
Lawrence River |
genre |
Balaenoptera physalus |
genre_facet |
Balaenoptera physalus |
op_doi |
https://doi.org/10.13016/mzia-ph9q |
_version_ |
1809900503203577856 |