Publisher Summary Environmental noise can affect acoustic communication through limiting
the broadcast area, or active space, of a signal by decreasing signal-to-noise ratios at the …

Ecosystems and the communities they support are changing at alarmingly rapid rates.
Tracking species diversity is vital to managing these stressed habitats. Yet, quantifying and …

About 70 million years ago, the terrestrial ancestors of whales and dolphins reentered the
ocean where life originally began. Not only did this require dramatic shifts in locomotion for …

Increasing numbers and speeds of vessels in areas with populations of cetaceans may have
the cumulative effect of reducing habitat quality by increasing the underwater noise level …

Acoustic signals are usually very effective in long-distance communication. However, in
many habitats animals suffer more and more from signal interference caused by traffic …

Animals produce a wide array of sounds with highly variable acoustic structures. It is
possible to understand the causes and consequences of this variation across taxa with …

What explains the superior cognitive abilities of the human brain compared to other, larger
brains? Here we investigate the possibility that the human brain has a larger number of …

Delphinid communication has been shaped by the marine environment. This resulted in
specific adaptations such as echolocation and a sophisticated communication system that …

Acoustic methods may improve the ability to identify cetacean species during shipboard
surveys. Whistles were recorded from nine odontocete species in the eastern tropical Pacific …

Whistles are narrowband, frequency-modulated sounds produced by many cetaceans.
Whistles are extensively studied in delphinids, where several factors have been proposed to …