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Relating Behavioral Context to Acoustic Parameters of Bottlenose Dolphin (Tursiops Truncatus) Vocalizations
Using the localization/video method, vocalizations in a time window around submissive behaviors were localized and classified as having come from either dolphins engaged in the interaction or dolphins not engaged in the interaction. Vocalizations were emitted by interactants more often than expected, and by non-interactants less often than expected. Use of different vocalization types was found to vary depending on the context of the agonistic interaction. In addition, the sequence of vocalizations with respect to behaviors within the interaction mattered, with more vocalizations occurring after than before submissive behaviors. These results demonstrated that group-based analyses of vocalizations are insufficient and one must use techniques designed to focus on the level of the interaction in order to study communication and social behavior in dolphins.
Experimental Visualization of the Near-boundary Hydrodynamics about Fish-like Swimming Bodies
(Cont.) LDV results show the reduction of turbulence intensity, near the waving boundary, for increasing phase speed up to 1.2 m/s after which the intensities begin to increase again through Cp = 2.0 where numerical simulations by Zhang (2000) showed separation reappearing on the back of the crests. Velocity profiles who an acceleration of the fluid beyond the inflow speed at the crest region increases with increased phase speed and no separation was present in the trough for the moving wall. The experimental techniques used are also discussed as they are applied in these experiments.
Your Planet Needs You!: An everyday guide to saving the earth
If there was ever a time to stand up for your planet, for Mother Earth, this is the time. But what are the most pressing environmental issues affecting us today? And what actions can you, as an individual, take to combat them? If you want to know what you can do, then this is the book for you. Your Planet Needs You is the essential beginner's guide to understanding the environment and the threats to its wellbeing. From plastic waste to pesticides, food production and chemicals, global warming to species extinction, this book covers the topics that you need to know about. With practical and positive tips, this book will show how you can be part of the solution and help make a better world, whatever age you are. Includes sections on air pollution, environmental law, fast fashion and ethical living, as well as resources such as recommended reading and lists of groups and organisations that you can get involved with.
