BN13A:
Impacts of Dams on Terrestrial Flux and Biogeochemical Processes Within the Large River-Estuary Continuum I


Session ID#: 37118

Session Description:
Large rivers represent the major link between continents and oceans and provide critical pathways for the delivery of particulate and dissolved terrestrial materials to the oceans. Unfortunately, most global rivers have been fragmented by dams, with more than 45,000 dams, over 15 m in height, now registered in the world. These massive engineering projects have radically changed the transport of water, terrestrial materials, and their associated biogeochemical processes across these vast global watersheds. Moreover, the downstream deltas are now in grave danger of being lost due to a lack of sediments needed to to keep up with sea-level rise, subsidence and overall coastal erosion. Understanding the dam-induced environmental consequences within the large river-estuary continuum has been a major concern for scientists, decision-makers and public over the past few decades. This session provides a venue for scientists from different disciplines to present their recent findings on terrestrial material transport and biogeochemical processes along this important hydrological pathway.
Primary Chair:  Houjie Wang, Ocean University of China, Qingdao, China
Co-chairs:  Thomas S Bianchi, University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States and Lijun Hou, East China Normal University, Shanghai, China
Moderators:  Lijun Hou, East China Normal University, Shanghai, China and Xiao WU, Ocean University of China, China
Student Paper Review Liaison:  Peng Yao, Ocean University of China, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Qingdao, China
Index Terms:

1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
4235 Estuarine processes [OCEANOGRAPHY: GENERAL]
4273 Physical and biogeochemical interactions [OCEANOGRAPHY: GENERAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • CT - Chemical Tracers, Organic Matter and Trace Elements
  • ED - Education, Outreach and Policy
  • E - Estuarine Processes

Abstracts Submitted to this Session:

Greening of the Yellow River: Causes and consequences (Invited) (302726)
Peng Yao1, Xinying Huang2, Thomas S Bianchi3, Jinpeng Wang1, Bin Zhao2, Jun Ye2 and Zhigang Yu1, (1)Ocean University of China, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Qingdao, China, (2)Ocean University of China, College of Chemistry and Chemical Engineering, Qingdao, China, (3)University of Florida, Department of Geological Sciences, Gainesville, FL, United States
Erosion-and deposition of the river channel in the lower Huanghe (Yellow River) reaches: process and mechanisms (307544)
Naishuang Bi1, Houjie Wang1, Xiao WU2, Jeffrey A Nittrouer3 and Zuosheng Yang1, (1)Ocean University of China, Qingdao, China, (2)Ocean University of China, China, (3)Rice University, Department of Earth, Environmental and Planetary Sciences, Houston, TX, United States
Water age distribution in the continuum of Yangtze River: from the Three Gorges Reservoir to the Yangtze Estuary (318517)
Jian Sun, Fanyi Zhang, Binliang Lin and Guoxian Huang, Tsinghua University, State Key Laboratory of Hydroscience and Engineering, Department of Hydraulic Engineering, Beijing, China
Using nitrate dual stable isotopes to investigate the impact of the Three Gorges Dam on the nitrogen cycle within the Changjiang (Yangtze) River (325420)
Kalina C Grabb1, Yu Xin2, Shuai Ding2, Xiaoyan Ning2 and Mei S. Liu3, (1)Massachusetts Institute of Technology, EAPS, Cambridge, MA, United States, (2)Ocean University of China, Marine Chemistry, Qingdao, China, (3)Ocean University of China, College of Chemistry and Chemical Engineering, Qingdao, China
Nitrogen Transformation in Water Column of the Yangtze Estuary: Response to Suspended- sediment Loads and Environmental Implication (302829)
Lijun Hou1, Min Liu2, Yanling Zheng1, Guoyu Yin1 and Maotian Li1, (1)East China Normal University, Shanghai, China, (2)East China Normal University, Key Laboratory of Geographic Information Sciences, Ministry of Education, School of Geographic Sciences, Shanghai, China
Anaerobic Ammonium Oxidation (ANAMMOX) Process in the Yangtze Estuary (303757)
Yanling Zheng1, Lijun Hou1, Guoyu Yin1 and Min Liu2, (1)East China Normal University, Shanghai, China, (2)East China Normal University, Key Laboratory of Geographic Information Sciences, Ministry of Education, School of Geographic Sciences, Shanghai, China
Model-guided Quantification of the Three Gorges Dam’s Impact on Changjiang Estuary’s Hydrodynamics and Ecosystem (304213)
Jianzhong Ge, East China Normal University, State Key Laboratory of Estuarine and Coastal Research, Shanghai, China, Ricardo Torres, Plymouth Marine Laboratory, Plymouth, United Kingdom, Richard Garth James Bellerby, State Key Laboratory for Estuarine and Coastal Research, East China Normal University, SKLEC-NIVA Centre for Marine and Coastal Research, Shanghai, China and Lijun Hou, East China Normal University, Shanghai, China

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