Social networks are static illustrations of dynamic societies, within which social interactions
are constantly changing. Fundamental sources of variation include ranging behaviour and …

The ecology and life history of marine megafauna can answer the ecological importance of a
region. This study assesses and monitors the abundance and home range of sea turtles …

This study represents the first attempt to study the population dynamics of Guiana dolphins
(Sotalia guianensis), by evaluating a set of demographic parameters. The population of the …

Dolphin communicative signals show great plasticity. Dolphins modify signal structure to
cope with their environment, in response to stress, and in some species to mimic group …

Activity budget data are essential for determining behavioral responses to physiological and
ecological variables. Yet, few studies are available to investigate the robustness, accuracy …

Boat‐based surveys were conducted from August 2002 to July 2003 to study the activity
patterns, spatial pattern of area use, and group characteristics of Sotalia guianensis in …

The genus Sotalia includes two species: Sotalia guianensis distributed along the coast of
Brazil, northern South America, and throughout the Caribbean Sea up to Honduras in …

The Sotalia guianensis dolphin occurs in the western Atlantic Ocean, from the south of Brazil
to Central America. It is a coastal species, much susceptible to human impacts, as …

The coastal habit and site fidelity reported for Sotalia guianensis make this species
especially vulnerable to human activities. Thus, ecological studies focusing on the habitat …

Habitat preference and spatial distribution of Guiana dolphins (Sotalia guianensis) in Norte
Bay, southern Brazil, was studied from 2001 to 2005. Boat surveys (N= 91) were made to …