1 Contents Contents ................................................................................................................................................. 2 Letters of Welcome .............................................................................................................................. 3 Committee Members ............................................................................................................................ 4 Keynote Speakers ................................................................................................................................. 6 Main Paper Speakers .......................................................................................................................... 10 Oral Abstracts ...................................................................................................................................... 17 Poster Abstracts ................................................................................................................................ 109 2 Letters of Welcome Dear colleagues, I would love to sincerely welcome all the delegates with the brightest smile and embracing arms extending our earnest Indonesian greeting ‘Selamat Datang’. It is an invaluable verity that I see many come to our conference with joy and contented heart despite the weariness you might have felt after long hours of flights or miles you have gone through. I thank you for the efforts and supposedly, we can serve you at best here, in Bali. Bali is the island of enchanting beauty. It is the sanctuary where the Mother Nature bestows ideas and inspirations. Our intention is to get together the scientific side and the calming nature. And Bali is the perfect place for this rendezvous. Our scientific committee together with the local organizing committee have avidly arranged the scientific program for the conference and we do hope that everyone learns this to be prolific and beneficial opportunity. This year’s theme of the 16th World lake Conference is Lake Ecosystem Health and Resilience: Diversity and the Risk of Extinction. It has become our commitment, as the human beings and the ones who exploit the nature; lakes in particular, to sustain the balance and self-reflect that a lot have been going on with our lakes and that most of them are silently suffering. Actions may have been kicked off but that is not about it. ‘Are actions sufficient to recover the grieving lakes?’, ‘Do we need improvements on our actions?’, ‘How long will it take for the accomplishment?’ are of the lingering questions that need to be answered. Open discussions and sharing experience are encouraged during the conference although three-day schedule may seem so short for multifaceted issues. In regards to the abstract submissions, we are pleased to know that the total number exceeds 250 submissions in which those for oral presentations are 171 and 89 are enganged for posters. Oral presentations are divided into four stream rooms for three days. Whereas the poster showcase is scheduled twice at the designated timeframe. Lastly, I would like to acknowledge our hard-working friends from the committees who have been so enthusiastic in ensuring the details of the conference. I do appreciate the whole lot you have worked on and look forward to the successful conference. Terima kasih. Sincerely yours, Prof. Gadis Sri Haryani 3 Committee Members A. International Scientific Advisory Board Chair Person : Prof. Gadis Sri Haryani [Indonesia] Vice Chair : Dr. Ignasius D.A Sutapa [Indonesia] Members : Prof. Hery Harjono [Indonesia] Prof. Robert Delinom [Indonesia] Prof. Hidayat Pawitan [Indonesia] Prof. Takehiko Fukushima [Japan] Prof. Yasuyuki Kono [Japan] Prof. Sin-ichi Nakano [Japan] Prof. Sucharit Koontanakulvong [Thailand] Prof. Wan Maznah [Malaysia] Prof. Kwansue Jung [South Korea] Prof. I Wayan Arthana [Indonesia] Dr. I Nyoman Sunarta [Indonesia] Dr. Tri Widiyanto [Indonesia] Dr. Ignatius D.A. Sutapa [Indonesia] Dr. Tri Retnaningsih Soeprobowati [Indonesia] Dr. Theo Ebbers [Germany] Mr. I Nyoman Suryadiputra [Indonesia] Dr. Hidayat [Indonesia] Dr. Apip [Indonesia] Dr. Cynthia Henny [Indonesia] Dr. Syahroma Husni Nasution [Indonesia] Dr. Lukman [Indonesia] Dr. Jojok Sudarso [Indonesia] Dr. Nofdianto [Indonesia] Dr. Yustiawati [Indonesia] Mr. Tjandra Chrismadha [Indonesia] Mr. M. Fakhrudin [Indonesia] Ms. Sulastri [Indonesia] Ms. Djamhuriyah S. Said [Indonesia] Mr. Eko Harsono [Indonesia] Mr. Hendro Wibowo [Indonesia] Prof. Hafrijal Syandri [Indonesia] Dr. Henderite Ohee [Indonesia] B. ILEC Scientific Committee Chair Person : Prof. Walter Rast [USA] Ex-Chair Person : Prof. Masahisa Nakamura [Japan] Members : Prof. Sandra Azevedo [Brazil] Prof. Salif Diop [Senegal] Dr. Zhengyu Hu [China] Prof. Daniel Olago [Kenya] Dr. Ajit Kumar Pattnaik [India] Ms. Adelina Santos-Borja [Philippines] Prof. Yoshihisa Shimizu [Japan] Dr. Juan Skinner [Guatemala] Prof. Tsugihiro Watanabe [Japan] 4 C. Local Organizing Committee Chair person : Mr. Hermono Sigit Dr. Fauzan Ali Mr. Imam Santoso Vice chair : Dr. Luki Subehi Mr. Bob A. Lombogia Mr. Djadid Secretary general : Ms. Ivana Yuniarti Ms. Yasue Hagihara Members : Dr. Sekar Larashati Dr. Gunawan Pratama Yoga Mr. Syamsuhari Ms. Hadiid Agita Rustini Ms. Inge Retnowati Mr. Ali Cahyadi Ms. Yovita Lambang Isti Ms. Miratul Maghfiroh Mr. Octavianto Samir Mr. Aan Dianto 5 Keynote Speakers LIMNOLOGY AND THE EFFORT TO FACE ITS PROBLEMS Fauzan Ali Director of Research Center for Limnology, Indonesian Institute of Sciences Corresponding author: [email protected] The field of limnology has been evolving with the integration of the ecosystem, which now comprises lakes catchment area, reservoir, rivers and wetlands. As such, all-encompassing studies to understand the structure and the function of inland ecosystem in Indonesia have been encouraged. Also, there is an increasing obligation towards the needs to conceive and maintain the ecological balance of inland water ecosystem which was subjected to massive pressure in recent times. Indonesia is listed among the 12 megadiversity countries, ranked the second in the world (the first in Asia) in the number of freshwater fish species. Moreover, there are 840 lakes, 735 ponds and 162 dams in Indonesia, covering about 21,000 km2 of area, retaining approximately 500 km3 of water volume and providing both ecological and economic services. Recently, there is an increasing need to conserve and maintain the ecological balance of inland water system which are subjected to massive pressure. In addition, the problem of biodiversity crisis in limnetic systems is at the worst among that in other natural systems. To identify the reason for the crisis in limnetic environments, and to conduct better conservation and management, we must urgently collect the information about the status quo of limnetic environments through appropriate environmental monitoring. Keyword: Biodiversity, Limnology, Ecosystem, Conservation INTEGRATED MANAGEMENT OF LENTIC AND LOTIC WATER SYSTEMS: APPLICATION TO INDONESIAN PRIORITY LAKES Walter Rast, Chair, ILEC Scientific Committee and Director of International Watershed Studies, Texas State University Lakes, reservoirs and wetlands comprise our planet’s major lentic (standing or pooled) water systems on our planet, containing the vast majority of the readily-accessible liquid freshwater on its surface. Although Integrated Water Resources Management (IWRM) has become the mantra in global water discussions and in national water programs, it is becoming increasingly clear this approach does not adequately address the unique features of lentic water systems (large volume; long water retention time; integrating nature; complex dynamics) within many water management schemes. The sustainability of the wide range of life-supporting ecosystem services provided by these lentic water systems is threatened by this deficiency. Subsequent experience suggests Integrated Lake Basin Management (ILBM), infused within the IWRM concept, provides a valuable complementary approach to watershed management. The Indonesian National Conservation Policy has recognized its value with its ILBM-based approach to assessing and managing its priority lakes. At the same time, a lake basin actually represents a linked system of nested and interacting lentic and lotic (flowing) water systems. This reality expands the ILBM concept to a broader Integrated Lentic-Lotic Basin Management (ILLBM) framework. There are examples for application of this broader approach within the context of the Indonesian priority lakes activities, with both scientific and management implications. 6 PASSING OUR BOUNTIFUL LAKES TO THE NEXT GENERATION WITH LOCAL EFFORTS Taizo Mikazuki Governor of Shiga Prefecture I would like to express my joy at the opening of the 16th World lake Conference in Bali, and extend my gratitude to Indonesian Government and those responsible for their efforts in organizing this conference. Shiga Prefectural Government proposed this World Lake Conference about 30 years ago, with the hope that government officials, researchers and citizens from regions that have lakes could meet together and discuss issues regarding the lakes. The 1st World Lake Conference was held in Otsu City in Shiga in 1984. Since then, the conferences have been held in many countries around the world and attended by around 20,000 people in total. This 16th World Lake Conference is being held in Southeast Asia for the first time, with the theme, “Lake Ecosystem Health and Its Resilience: