5/21/2015  |   13:30 - 13:45   |  101A

COLONIZATION SPEED AND PATTERN OF BENTHIC MACROINVERTEBRATE COMMUNITIES DURING THE EARLY SUCCESSIONAL PHASES IN TEMPERATE ASIA We quantified the colonization speed and pattern of benthic macroinvertebrate communities in 2 created small-sized wetlands (non-planted and planted) and a nearby older man-made wetland in the experimental station of Korea University in the central Korean Peninsula from May 2009 to October 2010. The colonization speed was evaluated using the newly adopted colonization index (CI) and the colonization pattern was analyzed using multivariate analysis (NMS). As predicted, the CI (range 100–0) decreased over time in the created wetlands; this decrease was more rapid in the planted wetland than in the non-planted wetland. After 400 Julian days, the benthic macroinvertebrate community in the planted wetland showed 90% similarity with that in the older man-made wetland. The NMS results revealed that the colonization pattern of benthic macroinvertebrates differed significantly according to vegetation (non-planted versus planted [p = 0.000]), season (p = 0.001), and year (p = 0.014). These results suggest that, initial planting in wetland can accelerate succession of benthic macroinvertebrate communities and colonization index was more easily evaluated colonization speed and stabilization of benthinc macroinvertebrate communities.

Dong Gun KIM (Primary Presenter/Author), Korean Entomological Institute, odonata@korea.ac.kr;


Yeon Jae Bae (Co-Presenter/Co-Author), Korea University, yjbae@korea.ac.kr;

5/21/2015  |   13:45 - 14:00   |  101A

RESPONSE OF FUNCTIONAL TRAITS AND DIVERSITY OF TROPICAL STREAM MACROINVERTEBRATES TO ENVIRONMENTAL VARIABLES IN XISHUANBANNA WATERSHED, YUNNAN CHINA We used 29 categories in 8 qualitative traits and 7 functional diversity indices of tropical stream macroinvertebrates to explore community response to environmental variables in Xishuanbanna (XSBN), upper Mekong River Basin, China. A total of 16 environmental variables and most traits categories were significantly different (p<0.05) between reference sites (RS, n=19) and disturbed sites (DS, n=40). RLQ and fourth-corner combined analysis showed that 7 traits except habit trait were predictable along an integrative disturbance gradient mainly resulted from % farmland, %urban, TN and %sands. Functional richness (FRic), trait richness (TR) and trait diversity (TD) were significantly different between RS and DS. Moreover, FRic and TR could be predicted by a subset of local environmental variables. In addition, contributions of pure environmental variables to FRic, TD and TR were significantly high, while contributions of pure spatial vectors were very low. We also found no significant relationships between trait patterns and spatial vectors. Our results supported the habitat-templet theory of biological traits, and suggested that traits, FRic and TR were potential and complementary indicators of stream condition in Mekong River Basin.

Beixin Wang (Primary Presenter/Author), Nanjing Agricultural University, wangbeixin@njau.edu.cn;


Ning Ding (Co-Presenter/Co-Author), Nanjing Agricultural University, 1# Weigang, Nanjing 210095, China, 2012102097@njau.edu.cn;


Weifang Yang (Co-Presenter/Co-Author), Jiangsu CDS, 172# Jiangsu road, Nanjing 210002, China, weifangyang2002@yahoo.com;

5/21/2015  |   14:00 - 14:15   |  101A

USING BENTHIC COMMUNITIES TO DETECT THE SHIFT OF HUMAN-NATURAL PARADIGM IN JIUJZHAIGOU NATIONAL PARK, CHINA Understanding the structure, function, and process of natural ecosystems and how human activities have modified the characteristics of such ecosystems is essential for sustaining ecoservices and ecosystem function. Benthic communities are important components and commonly used indicators for detecting changes in aquatic ecosystem. The Jiuzhaigou National Park ecosystem has experienced a series of deforestation, progressive conservation measures, increasing tourist pressure, environmentally sound park management, and climate change since 1960s. The footprint of such human-natural paradigm shifts resulted by such historical events can be reflected by long- and short-term changes in benthic communities. We linked benthic community compositions from lake sediment core, and headwater-downstream sequential surveys with nearby human activities and upland ecosystem characteristics in conjunction with lake and river in situ nutrient enrichment experiments to detect the shift in human-natural paradigm of Jiuzhaigou National Park. Our preliminary results indicate that the high demand of ecoservices, intensive management practice, and climate change have strong linkages with characteristics of the ecosystem as indicated by the benthic communities. Our results have strong implication for the park management policy making and practice operation.

Lizhu Wang (Primary Presenter/Author), International Joint Commission, Great Lakes Office, wangl@windsor.ijc.org;


Yangdong Pan (Co-Presenter/Co-Author), Portand State University, bwyp@pdx.edu ;


Yong Cao (Co-Presenter/Co-Author), Illinois Natural History Survey, University of illinois, yongcao@illinois.edu;


Quanxi Wang (Co-Presenter/Co-Author), Shanghai Normal University, China, wangqx@shnu.edu.cn;


Beixin Wang (Co-Presenter/Co-Author), Nanjing Agricultural University, wangbeixin@njau.edu.cn;


Jie Zhang (Co-Presenter/Co-Author), Nanjing Agricultural University, China, mfly@njau.edu.cn ;


Wanting Pang (Co-Presenter/Co-Author), Shanghai Normal University, China, pangwt@shnu.edu.cn;


Guiping Deng (Co-Presenter/Co-Author), Jiuzhaigou National Park, China, gdeng@umich.edu;

5/21/2015  |   14:15 - 14:30   |  101A

CHANGES OF MACROINVERTEBRATE ASSEMBLAGES ACROSS LAKES AND STREAM SITES IN RELATION TO NATURAL ENVIRONMENT AND TOURISM PRESSURE IN JIUJZHAIGOU NATIONAL PARK, CHINA Freshwater ecosystems in China are widely and severely stressed by water-quality pollutions, over-harvesting, and habitat losses. Among water bodies in the least-disturbed conditions are those streams and lakes in national parks, such as Jiuzhaigou National Park in Sichuan Province. However, with a rapid-growing economy and tourisms, even many of these parks are increasingly vulnerable to human impacts, including eutrophication and siltation. In the present study, we investigated the changes of macroinvertebrate assemblages in Jiuzhaigou National Park in relation to natural habitat characteristics, water quality, and tourism pressure by sampling 9 lakes and streams reaches above and below each of these lakes in summers 2013-14. All benthic individuals were sorted and identified. Light-trap samples were used to supplement the benthic samples. We found some substantial differences among the lakes and stream reaches in taxa richness, % EPT, and overall taxonomic composition. These differences were related to both natural environmental variables and a tourism pressure index. Our findings should be useful to develop a biological indicator for the stream system and guide future management practice.

Yong Cao (Primary Presenter/Author), Illinois Natural History Survey, University of illinois, yongcao@illinois.edu;


Beixin Wang (Co-Presenter/Co-Author), Nanjing Agricultural University, wangbeixin@njau.edu.cn;


Jie Zhang (Co-Presenter/Co-Author), Nanjing Agricultural University, China, mfly@njau.edu.cn ;


Lizhu Wang (Co-Presenter/Co-Author), International Joint Commission, Great Lakes Office, wangl@windsor.ijc.org;


Yangdong Pan (Co-Presenter/Co-Author), Portand State University, bwyp@pdx.edu ;


Quanxi Wang (Co-Presenter/Co-Author), Shanghai Normal University, China, wangqx@shnu.edu.cn;


Guiping Deng (Co-Presenter/Co-Author), Jiuzhaigou National Park, China, gdeng@umich.edu;

5/21/2015  |   14:30 - 14:45   |  101A

MOLECULAR PHYLOGEOGRAPHIC STUDIES OF FRESHWATER BENTHOS IN EAST ASIA, WITH SPECIAL REFERENCE TO THE COMPLEX FORMATION HISTORY OF THE JAPANESE ARCHIPELAGO Japan consists of four main and a number of smaller islands. The majority of which are “Continental-Islands”, that separated from the Eastern margin of the Eurasian Continent. The remainder being “Oceanic Islands”. In general, biodiversity on the continental islands is not so high, and as such it is often referred to as a “Satellite Shop” of the continent. In the Japanese Archipelago however, an extremely high degree of biodiversity has been achieved and maintained. Because, this archipelago maintains its condition as a comparatively naturally wet environment due to its Asian monsoon climate, and it stretches across multiple biomes in its north-south orientation. Moreover, the complex geohistory of this archipelago has contributed greatly to the degree of biodiversity observable. In particular, as a result of the weak vagility of freshwater benthos, they have very strongly reflected the effects of these geohistorical factors in their population and genetic structures. Therefore, the benthos inhabiting streams feature as suitable study targets for discussion of phylogeography. In this presentation, I would like to introduce these features by taking examples from several concrete case studies.

Koji Tojo (Primary Presenter/Author), Biology Department, Faculty of Science, Shinshu University, Japan , ktojo@shinshu-u.ac.jp;

5/21/2015  |   14:45 - 15:00   |  101A

BIOGEOGRAPHY OF THE ISONYCHIID MAYFLY ISONYCHIA JAPONICA WITH A WIDE DISTRIBUTION IN EAST ASIA, INFERRED FROM MOLECULAR PHYLOGENETIC ANALYSES (EPHEMEROPTERA, ISONYCHIIDAE) The isonychiid mayfly Isonychia japonica is distributed widely across the East Asian region. Especially in Japan, they are distributed widely inhabiting a wide range of habitats, including both the upstream and downstream areas, i.e., I. japonica is typically considered a “Habitat-Generalist” species. In this study, genetic analyses of the mtDNA COI, 16S rRNA regions and the nDNA ITS2, histone H3 regions were performed, using samples of this species collected widely from areas Japan, and also using several samples from the Korean Peninsula and the Russian Far East. As a result of this study, it was revealed that I. japonica is composed of two major and significantly genetically differentiated clades; Continental vs Japan’s clades. Furthermore, it was also revealed that the Japan’s clade is composed of two sub-clades; clade J-U vs J-D. It was revealed that the specimens consisting clades J-U and J-D were each predominantly taken from upstream and downstream areas, respectively. These results suggested that this “Generalist” species have acquired a broad distribution accompanied by a variety of genetic differentiation factors by means of a complex geological history.

Koji Tojo (Primary Presenter/Author), Biology Department, Faculty of Science, Shinshu University, Japan , ktojo@shinshu-u.ac.jp;


Rie Saito (Co-Presenter/Co-Author), Biology Department, Faculty of Science, Shinshu University, Japan, 13st403b@shinshu-u.ac.jp;

5/21/2015  |   15:00 - 15:15   |  101A

OUR COMMON FRESHWATER FUTURE Rivers and lakes are not limited by borders, but share their wealth with all living things on Earth. Saving freshwater for future generations is the important task of our time. To do this we must create a common strategy with unified regulations and take them as general international instruments for the introduction of water management policy in Asia. The first step toward this goal will be developing international freshwater bioassessment protocols with explicit procedures of design, sampling, data analysis. Second, implementing these developments at the level of ministries and creating an Asian Water Commission. Other tasks include establishing Freshwater Ecology Training Centers at top Asian universities; sharing information, professionals and students; preparing common bilingual identification keys and textbooks; listing indicator organisms with tolerance values; and establishing an Asian Water Data Bank. In bringing people and countries together to protect water resources, we solve other important tasks, including the maintenance of international peace and tranquility and an ability to understand each other in general, despite language and cultural barriers, and the BSA is the solid base for freshwater collaboration in Asia.

Viktor Bogatov (Primary Presenter/Author), Prezidium of Far Eastern Branch of Russian Academy of Sciences, vibogatov@rambler.ru;


Tatyana Vshivkova (Co-Presenter/Co-Author), Institute of Biology and Soil Sciences, FEB RAS, vshivkova@biosoil.ru;


Nadezhda Khristoforova (Co-Presenter/Co-Author), Far Eastern State University, marineecology@ambler.ru;


John C. Morse (Co-Presenter/Co-Author), Clemson University, jmorse@clemson.edu;