NDLI: Development and deployment of the long-term in-situ observation system of the Irrawaddy dolphins (Orcaella brevirostris) in Borneo

Content Provider	IEEE Xplore Digital Library
Author	Sugimatsu, H. Kojima, J. Ura, T. Hiryu, S. Bahl, R. Behera, S. Pattnaik, A. Mandan, I. Tomuro, S. Kreb, D.
Copyright Year	2013
Description	Author affiliation: KDDI R&D Labs. Inc., Fujimino, Japan (Kojima, J.) \|\| Mulawarman Univ., Samarinda, Indonesia (Mandan, I.; Tomuro, S.) \|\| Chilika Dev. Authority, Bhubaneswar, India (Pattnaik, A.) \|\| WWF - India, New Delhi, India (Behera, S.) \|\| Indian Inst. of Technol. Delhi, New Delhi, India (Bahl, R.) \|\| Doshisha Univ., Kyotanabe, Japan (Hiryu, S.) \|\| Inst. of Ind. Sci., Univ. of Tokyo, Tokyo, Japan (Sugimatsu, H.; Ura, T.) \|\| Yayasan Konservasi RASI (Rare Aquatic Species of Indonesia), Samarinda, Indonesia (Kreb, D.)
Abstract	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 stream of the river and their echolocation strategy, the stationary observatory using an existing floating house was developed in December 2011 and its first long-term in-situ monitoring was conducted for 3 months in 2012. Taking advantage of the floating house observation platform on the river, one SBL system which consists of a three-piece set of SSBL units with environmental sensors were used for the recording system. In the Mahakam river, boat traffic is steadily increasing. Not only for understanding the trend of the dolphin's migration but also for evaluation of increasing boat noise effect on their echolocation ability, basic acoustic characteristics of the dolphin's echolocation clicks and two typical types of boat noise pulses (type A and type B) were revealed to classify dolphin clicks accurately from boat noise.
Sponsorship	Japan Council OE Chapt.
Starting Page	1
Ending Page	7
File Size	2196895
Page Count	7
File Format	PDF
ISBN	9781467359481
e-ISBN	9781467359498
DOI	10.1109/UT.2013.6519818
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-03-05
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dolphins Rivers Observatories Monitoring Boats Sensors Lakes
Content Type	Text
Resource Type	Article

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Long-term in-situ monitoring of the Irrawaddy Dolphins (Orcaella brevirostris) in Borneo

Long duration real-time acoustic monitoring of Irrawaddy dolphins (Orcaella brevirostris) in Mahakam river in Borneo

Development of an automatic discrimination method of the bio-sonar clicks of Irrawaddy dolphin (Orcaella brevirostris) from various types of boat noises

Living Under an Aquatic Freeway: Effects of Boats on Irrawaddy Dolphins (Orcaella brevirostris) in a Coastal and Riverine Environment in Indonesia

Irrawaddy dolphin (Orcaella brevirostris) washed ashore on Digha Coast, West Bengal, India

Habitat impact on acoustic bio-sonar characteristics of Irrawaddy dolphins across two distinct habitats

Data from: Habitat modeling of Irrawaddy dolphins (Orcaella brevirostris) in the eastern Gulf of Thailand (Dataset)

Population size, distribution and daylight behaviour of Irrawaddy dolphins (Orcaella brevirostris) in Penang Island, Malaysia

Apreliminary study of population size of Irrawaddy Dolphins (Orcaella brevirostris) in Cowie Bay, Sabah, Malaysia

Development and deployment of the long-term in-situ observation system of the Irrawaddy dolphins (Orcaella brevirostris) in Borneo

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