Search for dissertations about: "dolphin"

Showing result 1 - 5 of 7 swedish dissertations containing the word dolphin.

2. 1. Directional aggressive pulse sounds in the bottlenose dolphin (Tursiops Truncatus) : technical aspects and social implications

   Author : Christer Blomqvist; Kathleen Dudzinski; Linköpings universitet; []
   Keywords : NATURAL SCIENCES; NATURVETENSKAP;

   Abstract : The ability of dolphins to produce pulse sounds with a bandwidth of up to 150 kHz, has been intensively studied with focus on their sonar capabilities, i.e. the detection, ranging and discrimination of objects of various shapes, textures and material. READ MORE

4. 2. Behavioural ecology of Indo-Pacific bottlenose and humpback dolphins

   Author : Eva Stensland; Per Berggren; Anders Angerbjörn; Elisabeth Slooten; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Behaviour; ecology; dolphins; Zanzibar; abundance; distribution; tourism; mixed-species groups; interspecific association; social interaction; swim-with-dolphin; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

   Abstract : Dolphins in East Africa face various threats, such as direct hunt, bycatch and habitat degradation. It is therefore important to undertake research that can facilitate necessary conservation and management actions to minimize these threats. READ MORE

5. 3. Multi-Channel Acquisition and Visualization of the Dolphin Echolocation Beam – Instrumentation Design and Bioacoustic Results

   Author : Josefin Starkhammar; Avdelningen för Biomedicinsk teknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : Toothed whales (Odontocetes) use echolocation to navigate and find food in dark or murky waters. A wide range of innovative studies has since the 1960:s been used to characterize their echolocation beam and map out their echolocation skills. READ MORE

6. 4. Tracking of Animals Using Airborne Cameras

   Author : Clas Veibäck; Gustaf Hendeby; Fredrik Gustafsson; Kalle Åström; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : The various elements of a modern target tracking framework are covered. Background theory on pre-processing, modelling and estimation is presented as well as some novel ideas on the topic by the author. In addition, a few applications are posed as target tracking problems for which solutions are gradually constructed as relevant theory is covered. READ MORE

7. 5. Ecology and genetic population structure of Indo-Pacific bottlenose dolphins in East Africa

   Author : Anna Särnblad Hansson; Per Berggren; Anders Angerbjörn; Göran Spong; Stockholms universitet; []
   Keywords : Tursiops aduncus; population size; distribution; social structure; behaviour; conservation status; mitochondrial DNA; microsatellites; Zanzibar; western Indian Ocean; NATURAL SCIENCES; NATURVETENSKAP; zoologisk ekologi; Animal Ecology;

   Abstract : Many marine mammal populations are threatened by anthropogenic activities. The Indo-Pacific bottlenose dolphins (Tursiops aduncus) off Zanzibar are subject to high levels of bycatch, negative impact from tourism and were previously hunted. READ MORE