| classification of echolocation clicks from odontocetes in the southern california bight. | this study presents a system for classifying echolocation clicks of six species of odontocetes in the southern california bight: visually confirmed bottlenose dolphins, short- and long-beaked common dolphins, pacific white-sided dolphins, risso's dolphins, and presumed cuvier's beaked whales. echolocation clicks are represented by cepstral feature vectors that are classified by gaussian mixture models. a randomized cross-validation experiment is designed to provide conditions similar to those fo ... | 2011 | 21303026 |
| concentrations of dde in blubber biopsies of free-ranging long-beaked common dolphin (delphinus capensis) in the gulf of california. | long-beaked common dolphins (delphinus capensis) in the gulf of california have been exposed to persistent contaminants that originated in large agricultural areas near the coast. live common dolphins were sampled by remote dart biopsies to determine concentrations of tddt in blubber. life stage and initial gender identification was determined by field observations. gender was confirmed by genetic analysis of the skin. concentration of tddt in blubber was analyzed by gas chromatography. the 16 s ... | 2015 | 25376965 |
| association of an unusual marine mammal mortality event with pseudo-nitzschia spp. blooms along the southern california coastline. | during 2002, 2,239 marine mammals stranded in southern california. this unusual marine mammal stranding event was clustered from april to june and consisted primarily of california sea lions (zalophus californianus) and long-beaked common dolphins (delphinus capensis) with severe neurologic signs. intoxication with domoic acid (da), a marine neurotoxin produced during seasonal blooms of pseudo-nitzschia spp., was suspected. definitively linking harmful algal blooms to large-scale marine mammal m ... | 2009 | 19204340 |
| gaussian mixture model classification of odontocetes in the southern california bight and the gulf of california. | a method for the automatic classification of free-ranging delphinid vocalizations is presented. the vocalizations of short-beaked and long-beaked common (delphinus delphis and delphinus capensis), pacific white-sided (lagenorhynchus obliquidens), and bottlenose (tursiops truncatus) dolphins were recorded in a pelagic environment of the southern california bight and the gulf of california over a period of 4 years. cepstral feature vectors are extracted from call data which contain simultaneous ov ... | 2007 | 17407910 |