The Hawai'ian spinner dolphin, Stenella longirostris: effects of tourism
Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item. Includes bibliographical references (leaves...
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Texas A&M University
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fttexasamuniv:oai:oaktrust.library.tamu.edu:1969.1/ETD-TAMU-2001-THESIS-F64 2023-07-16T03:57:43+02:00 The Hawai'ian spinner dolphin, Stenella longirostris: effects of tourism Forest, Anna Marie 2001 electronic application/pdf reformatted digital https://hdl.handle.net/1969.1/ETD-TAMU-2001-THESIS-F64 en_US eng Texas A&M University https://hdl.handle.net/1969.1/ETD-TAMU-2001-THESIS-F64 This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. wildlife and fisheries sciences Major wildlife and fisheries sciences Thesis text 2001 fttexasamuniv 2023-06-27T22:50:12Z Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item. Includes bibliographical references (leaves 79-90). Issued also on microfiche from Lange Micrographics. Human activities and spinner dolphin behavior were observed in Kealake'kua Bay, Kona coast, Hawai'i, from 28 August, 1993 to 7 July, 1994. Data were collected from an observation site 55 m above mean low water on a steep slope at the eastern edge of the bay. Dolphins occurred within Kealake'kua Bay on 135 of 232 observation days, or 58% of the time. Estimated school sizes ranged from 4 to 90 individuals, with a mean of 33. As found in earlier studies, dolphins used the bay for low-level social activities and rest, with early mornings and afternoons characterized by higher states of apparent alertness than during mid-day. Humans, especially females, entered the bay significantly more on days when dolphins were present than when they were not. Thirty-five days with 5 hours or more of continuous observations with Beaufort sea state 3 or less were selected to compare surfacing behavior and frequency of aerial activities with different types of human activities (comparisons by one-way MANCOVA and Scheff ̌test). The human activities of swimmers, kayaks, and motor boats, alone or in combination, had no apparent impact on dolphin surfacing behavior in the morning. However, in the afternoon, dolphins were more likely to surface asynchronously than synchronously in the presence of each activity, and aerial activities were higher than without humans. Dolphins used Kealake'kua Bay on 21% fewer days in 1993-94 than 1979-80. This could be due to ecological factors, spinner dolphin demographics, or human influences. Spinner dolphins also showed less aerial activity during this than the earlier work, indicating a potential reduction in energy levels. Effects of human ... Thesis Beaufort Sea Texas A&M University Digital Repository |
institution |
Open Polar |
collection |
Texas A&M University Digital Repository |
op_collection_id |
fttexasamuniv |
language |
English |
topic |
wildlife and fisheries sciences Major wildlife and fisheries sciences |
spellingShingle |
wildlife and fisheries sciences Major wildlife and fisheries sciences Forest, Anna Marie The Hawai'ian spinner dolphin, Stenella longirostris: effects of tourism |
topic_facet |
wildlife and fisheries sciences Major wildlife and fisheries sciences |
description |
Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item. Includes bibliographical references (leaves 79-90). Issued also on microfiche from Lange Micrographics. Human activities and spinner dolphin behavior were observed in Kealake'kua Bay, Kona coast, Hawai'i, from 28 August, 1993 to 7 July, 1994. Data were collected from an observation site 55 m above mean low water on a steep slope at the eastern edge of the bay. Dolphins occurred within Kealake'kua Bay on 135 of 232 observation days, or 58% of the time. Estimated school sizes ranged from 4 to 90 individuals, with a mean of 33. As found in earlier studies, dolphins used the bay for low-level social activities and rest, with early mornings and afternoons characterized by higher states of apparent alertness than during mid-day. Humans, especially females, entered the bay significantly more on days when dolphins were present than when they were not. Thirty-five days with 5 hours or more of continuous observations with Beaufort sea state 3 or less were selected to compare surfacing behavior and frequency of aerial activities with different types of human activities (comparisons by one-way MANCOVA and Scheff ̌test). The human activities of swimmers, kayaks, and motor boats, alone or in combination, had no apparent impact on dolphin surfacing behavior in the morning. However, in the afternoon, dolphins were more likely to surface asynchronously than synchronously in the presence of each activity, and aerial activities were higher than without humans. Dolphins used Kealake'kua Bay on 21% fewer days in 1993-94 than 1979-80. This could be due to ecological factors, spinner dolphin demographics, or human influences. Spinner dolphins also showed less aerial activity during this than the earlier work, indicating a potential reduction in energy levels. Effects of human ... |
format |
Thesis |
author |
Forest, Anna Marie |
author_facet |
Forest, Anna Marie |
author_sort |
Forest, Anna Marie |
title |
The Hawai'ian spinner dolphin, Stenella longirostris: effects of tourism |
title_short |
The Hawai'ian spinner dolphin, Stenella longirostris: effects of tourism |
title_full |
The Hawai'ian spinner dolphin, Stenella longirostris: effects of tourism |
title_fullStr |
The Hawai'ian spinner dolphin, Stenella longirostris: effects of tourism |
title_full_unstemmed |
The Hawai'ian spinner dolphin, Stenella longirostris: effects of tourism |
title_sort |
hawai'ian spinner dolphin, stenella longirostris: effects of tourism |
publisher |
Texas A&M University |
publishDate |
2001 |
url |
https://hdl.handle.net/1969.1/ETD-TAMU-2001-THESIS-F64 |
genre |
Beaufort Sea |
genre_facet |
Beaufort Sea |
op_relation |
https://hdl.handle.net/1969.1/ETD-TAMU-2001-THESIS-F64 |
op_rights |
This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. |
_version_ |
1771544408191139840 |