Distribution of manatees and noise near a coastal power plant

摘要

We examine the relationship between the distribution of manatees (Trichechus manatus manatus) and noise produced by an electric power plant in Jobos Bay, Puerto Rico. Ambient power plant noise levels in decibels (dB) and the presence/absence as well as sounds of manatees were recorded in seven habitat types from June 14 through July 21,2010. The distribution of manatee appears to be associated with environmental noise levels because the majority of sightings were in the habitats with less noise.