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Long-term acoustic monitoring of the Irrawaddy dolphins using a PAM (passive acoustic monitoring) system has been conducted since 2011 at the stationary observatory in the middle-river district of the Mahakam river in Borneo. For statistical data analysis using a large amount of data of both Irrawaddy dolphin clicks and a variety of boat noise pulses acquired by the long duration monitoring, applying...
Targeting some Irrawaddy dolphin groups that frequently migrate from Lake Semayang to up/down-stream of the river through the tributary and the confluence in the middle-river district of the Mahakam river in Borneo, the long duration real-time acoustic monitoring using a PAM (Passive Acoustic Monitoring) system using arrays of hydrophones at the stationary observatory has been conducted since 2011...
Irrawaddy dolphins are wildly distributed in Asian rivers, lakes and coastal areas. Unfortunately, their population is drastically reducing especially in river areas. Approximately 70–80 Irrawaddy dolphins divided into groups inhabit a 180km stretch of the up-river district of the Mahakam river in Borneo. For understanding the trend of some dolphin groups' migration pattern from Semayang Lake to up/down...
In Borneo, to monitor the dolphin's groups that migrate from the Semayang Lake to the Mahakam river at Pela village, the annual long-term in-situ monitoring using a stationary observatory deployed from an existing floating house was started in June 2012. Taking advantage of the floating house observation platform on the river, one SBL (Short Base Line) system which consists of a three-piece set of...
Aiming to develop a strategy for the conservation of freshwater dolphins inhabiting Asian areas, a new international collaborating project for real time networking of freshwater dolphin's observatories in Asian waters using passive acoustic monitoring system between Japanese team, Indian team and Indonesian team has been started since April 2010. The project networks the data from the observatories...
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