These pockets of odor decrease in concentration as they are carried away from the source (Murlis and Jones, 1981Murlis et al., 2000Webster and Weissburg, 2001).
creating pockets of clean fluid intermixed with fluid bearing odor of different concentrations (Campbell, 1977Weissburg, 2000). These pockets of odor decrease in concentration as they are carried away from the source (Murlis and Jones, 1981Murlis et al., 2000Webster and Weissburg, 2001). In either flow condition, an animal must be able to adapt its behavior as it moves and use the information available to navigate to the source.