Giant Otters
The scientific name for the giant river otter?
What is Pteronura brasiliensis
Year the dam became operational
What is 2016
The IUCN Red List status of giant otters
What is Endangered
What is a 9 m aluminum boat
The zone that had the majority of giant otter sightings prior to dam construction
What is the low impact zone
Giant otters primary feed on this type of food.
Number of hydropower dams with more than 30 MW across the legal Brazilian Amazon
What is 29
The human activity that affected giant otters (besides houses)
What is fishing and boat traffic
The two sustainable use protected areas in the eastern brazilian amazon where data was collected
What is Amapá National Forest and Amapá State Forest
The presence and relative abundance reduced in this zone after dam installation
What is intermediate zones
Maximum group size reported for giant otters in this study
What is 16 individuals
The 219 MW dam studied in the eastern Brazilian Amazon
What is Cachoeira Caldeirao dam
One recommended conservation action from this study
What is create and maintain areas with low disturbance
The months when data was collected
What is September-November and December-February
This increased in the intermediate zones after dam construction
What is number of houses
This behavior is affected by proximity to humans, influencing giant otter distribution.
What is habitat use or presence near settlements
The amount of time after dam installation that the 'after' study began
What is 1 year
The study design for this project
What is BACI
The three zones the river was divided into for the study
What is low impact zone, intermediate, and reservoir
The amount of giant river otter sightings throughout the study period
What is 43
Giant otters require these structures along rivers for social activities.
What are dens
These are potential negative effects of damns on giant otter's aquatic habitat
What is water fluctuation, flooding or changes in fish productivity
Reasons why dam reservoirs may be unsuitable for giant river otters
What is flooding den sites, increased human activity and altered fish communities.
The maximum amount of minutes the giant otters were observed during the study
What is 15 minutes
The amount of km surveyed during this study
What is 6,459km