scholarly journals Assessment of Wetland Ecosystem Health in the Yangtze and Amazon River Basins

2017 ◽  
Vol 6 (3) ◽  
pp. 81 ◽  
Author(s):  
Rui Sun ◽  
Pingping Yao ◽  
Wen Wang ◽  
Bing Yue ◽  
Gang Liu
Keyword(s):  
Ecosystem Health ◽  
River Basins ◽  
Amazon River ◽  
Wetland Ecosystem

scholarly journals New records of fishes (Actinopterygii: Ostariophysi) from the Upper Tapajós River Basin

Check List ◽  
2012 ◽  
Vol 8 (3) ◽  
pp. 592 ◽  
Author(s):  
Fernando C. P. Dagosta ◽  
Murilo N. L. Pastana ◽  
André L. H. Esguícero
Keyword(s):  
River Basin ◽  
New Records ◽  
River Basins ◽  
Amazon River ◽  
First Report ◽  
Xingu River ◽  
Coastal Rivers

The first report of Sartor (Anostomidae) and Tatia intermedia (Auchenipteridae) for the Upper Tapajós River Basin are presented here. Sartor is very rare on collections, and is reported only from the Trombetas, Tocantins and Upper Xingu river basins. Tatia intermedia is registered in the upper reaches of the Araguaia, Tocantins, Xingu, and Capim rivers, tributaries of the lower Amazon River in Brazil, northwards to the Suriname coastal rivers and the Essequibo River in Guyana.

scholarly journals A coupled modeling framework for sustainable watershed management in transboundary river basins

2017 ◽  
Vol 21 (12) ◽  
pp. 6275-6288 ◽  
Author(s):  
Hassaan Furqan Khan ◽  
Y. C. Ethan Yang ◽  
Hua Xie ◽  
Claudia Ringler
Keyword(s):  
River Basin ◽  
Watershed Management ◽  
Water Resource ◽  
Ecosystem Health ◽  
Water System ◽  
River Basins ◽  
System Model ◽  
Transboundary River ◽  
Transboundary River Basins ◽  
Water Uses

Abstract. There is a growing recognition among water resource managers that sustainable watershed management needs to not only account for the diverse ways humans benefit from the environment, but also incorporate the impact of human actions on the natural system. Coupled natural–human system modeling through explicit modeling of both natural and human behavior can help reveal the reciprocal interactions and co-evolution of the natural and human systems. This study develops a spatially scalable, generalized agent-based modeling (ABM) framework consisting of a process-based semi-distributed hydrologic model (SWAT) and a decentralized water system model to simulate the impacts of water resource management decisions that affect the food–water–energy–environment (FWEE) nexus at a watershed scale. Agents within a river basin are geographically delineated based on both political and watershed boundaries and represent key stakeholders of ecosystem services. Agents decide about the priority across three primary water uses: food production, hydropower generation and ecosystem health within their geographical domains. Agents interact with the environment (streamflow) through the SWAT model and interact with other agents through a parameter representing willingness to cooperate. The innovative two-way coupling between the water system model and SWAT enables this framework to fully explore the feedback of human decisions on the environmental dynamics and vice versa. To support non-technical stakeholder interactions, a web-based user interface has been developed that allows for role-play and participatory modeling. The generalized ABM framework is also tested in two key transboundary river basins, the Mekong River basin in Southeast Asia and the Niger River basin in West Africa, where water uses for ecosystem health compete with growing human demands on food and energy resources. We present modeling results for crop production, energy generation and violation of eco-hydrological indicators at both the agent and basin-wide levels to shed light on holistic FWEE management policies in these two basins.

Carbon river fluxes and weathering CO2 consumption in the Congo and Amazon river basins

1994 ◽  
Vol 9 (1) ◽  
pp. 1-13 ◽  
Author(s):  
J.L. Probst ◽  
J. Mortatti ◽  
Y. Tardy
Keyword(s):  
River Basins ◽  
Amazon River ◽  
Co2 Consumption

scholarly journals Catfishes of the genus Auchenipterichthys (Osteichthyes: Siluriformes: Auchenipteridae): a revisionary study

2005 ◽  
Vol 3 (1) ◽  
pp. 89-106 ◽  
Author(s):  
Carl J. Ferraris Jr. ◽  
Richard P. Vari ◽  
Sandra J. Raredon
Keyword(s):  
River Basin ◽  
River Basins ◽  
Junior Synonym ◽  
Amazon River ◽  
Amazon River Basin ◽  
Orinoco River ◽  
Negro River ◽  
Madeira River ◽  
Fourth Species ◽  
Madeira River Basin

The Neotropical auchenipterid catfish genus Auchenipterichthys is reviewed and found to include four species. Auchenipterichthys thoracatus, formerly considered to be widely distributed throughout the Amazon River basin, is found to be restricted to the upper Madeira River basin. The widespread Amazonian species that had been misidentified as A. thoracatus is, instead, A. coracoideus; a species that also occurs in the upper Essequibo River. Auchenipterichthys longimanus, the most widely distributed species of the genus, is found through much of the Amazon and Orinoco River basins. The fourth species of the genus, A. punctatus (and its junior synonym A. dantei), is found in the upper portions of the Orinoco and Negro River basins in Venezuela and the central portions of the Amazon River basin in Brazil. All four species of Auchenipterichthys are redescribed and illustrated, and a key to the species is provided.

scholarly journals The Health Evaluation of Wetland Ecosystem in the Yangtze River Economic Zone Based on Remote Sensing——A Case Study of Yunnan Wetland

2021 ◽  
Vol 276 ◽  
pp. 01001
Author(s):  
Haonan Wang ◽  
Fan Yu ◽  
Jun Li
Keyword(s):  
Health Status ◽  
Evaluation System ◽  
Ecosystem Health ◽  
Comprehensive Evaluation ◽  
Rate Of Change ◽  
Evaluation Index ◽  
Health Evaluation ◽  
Wetland Ecosystem ◽  
Evaluation Indexes ◽  
The Status

In order to provide a scientific basis for the development of the Yunnan wetland ecosystem, we construct a wetland ecosystem health evaluation system with 15 evaluation indexes selected from three aspects including pressure, status and response based on PSR mathematical model. Analytic Hierarchy Process(AHP) was used to determine the weight of indicators and the Yunnan wetland ecosystem was divided into “the five health status” of “health, sub-health, fragility, illness, and scurviness”, which are used to analyze and evaluate the health status of it through a comprehensive evaluation index. The results show that the comprehensive evaluation index of ecosystem health status of Yunnan wetland is 0.5524 in 2017, locating in the grade of “fragility” and is close to the status of “sub-healthy”; Among the 3 levels of pressure, state, and response, the pressure and state are locating in the grade of “fragility” and the response is close to the status of “health”. Among the 15 evaluation indexes, the rate of change of wetland area, the area of water body, the hydrological regulation and the wetland management level are the most important factors affecting the ecosystem health of Yunnan wetland.

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