The durations of more than 4000 dives and recovery periods on the surface of 31 shags. Phalacrocorax aristotelis, were recorded using radio-telemetry, during three breeding seasons....
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The diving behaviour of seven free-ranging harbour porpoises (Phocoena phocoena) was examined using time–depth recorders. In total, 8167 individual dives were recorded over 254 h. The...
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Our understanding of how air-breathing marine predators cope with environmental variability is limited by our inadequate knowledge of their ecological and physiological parameters. Because of their...
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Humpback whales (Megaptera novaeangliae) undertake one of the longest migrations of any animal and while on a broad-scale this journey appears direct, on a fine-scale, behaviors...
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Measurement of energy acquisition and allocation provides a quantitative assessment of how animals organize their daily or seasonal activities, and how they prioritize their behaviors to...
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The production of venous gas emboli (VGE) resulting from altered dive behavior is postulated as contributing to the stranding of beaked whales exposed to mid-frequency active...
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Our understanding of cetacean diving behaviour has recently increased (West-gate et al. 1995, Heide-Jorgensen and Dietz 1995, David et al. 1996). However, there are few reports...
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Sound-and-orientation recording tags (DTAGs) were used to study 10 beaked whales of two poorly known species, Ziphius cavirostris (Zc) and Mesoplodon densirostris (Md). Acoustic behaviour in...
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The rate of oxygen consumption and energetic cost of locomotion of captive harbor porpoises Phocoena phocoena were studied in Hokkaido, Japan, using respirometry together with externally...
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We present a passive acoustic method for estimating the density of echolocating cetaceans that dive synchronously, based on isolation of dive starts using a field of...
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