21st Century Watershed Technology: Improving Water Quality and Environment Conference Proceedings, 29 March - 3 April 2008, Concepcion, Chile, 2008
... Alejandra Stehr1, Patrick Debels1,2, Jose Luis Arumi3 1 Centre for Environmental Sciences EUL... more ... Alejandra Stehr1, Patrick Debels1,2, Jose Luis Arumi3 1 Centre for Environmental Sciences EULA-CHILE, University of Concepción, PO Box 160-C ... India, New Zealand, Chile, etc; (Abu El-Nasr et al., 2005; Eckhardt 2005; Govender & Everson 2005; Cao et al., 2006; Tripathi et al ...
Only with a properly designed water quality monitoring network can data be collected that can lea... more Only with a properly designed water quality monitoring network can data be collected that can lead to accurate information extraction. One of the main components of water quality monitoring network design is the allocation of sampling locations. For this ...
Abstract. The Chillán River in Central Chile plays a fundamental role in local society, as a sour... more Abstract. The Chillán River in Central Chile plays a fundamental role in local society, as a source of irrigation and drinking water, and as a sink for urban wastewater. In order to characterize the spatial and temporal variability of surface water quality in the watershed, a Water Quality ...
Abstract. Because of the importance of surface waters from the Chillµn River watershed (Chile) fo... more Abstract. Because of the importance of surface waters from the Chillµn River watershed (Chile) for recreation, agricultural irrigation, and the production of drinking water, local concern about river water quality has increased considerably during the last decade. Agricultural ...
... Alejandra Oyanedel 1 , Claudio Valdovinos 1,2 , Mary sol Azocar 1 , Carolina Moya, Gabriela M... more ... Alejandra Oyanedel 1 , Claudio Valdovinos 1,2 , Mary sol Azocar 1 , Carolina Moya, Gabriela Mancilla 1 , Pablo Pedreros 1 & Ricardo Figueroa 1. ... Castella, E., H. Adalsteinsson, J. Brittain, G. Gislason, A. Lehmann, V. Lencioni, B. Lods-Crozet, B. Maiolini, A. Milner, J. Olafsson, S ...
ABSTRACT The paper presents the development and implementation of a decision support system (DSS)... more ABSTRACT The paper presents the development and implementation of a decision support system (DSS) for wetland management in a river basin context under data scarce conditions. It is shown that by combining hydrological, socioeconomic, institutional and biological indicators in a participative approach, a better understanding of the interactions between the different factors affecting the “wetland socio-ecological system conditions” can be created. For this purpose, mathematical models, expert judgment and stakeholder preferences were combined into an integrated DSS framework.The DSS for the Abras de Mantequilla-Guayas Basin environment was derived from a generic, conceptual Decision Support Framework developed and proposed within the WETWin project, taking into consideration the specific conditions at the case study site. Standard methodologies for the characterization of wetland ecosystem services were applied and used to evaluate the effects of potential management solutions using appropriate criteria to assess the trade-offs.In order to account for the interactions between the river catchment and the wetland system, an embedded modeling framework was adopted in which coupled models for rainfall-runoff and hydrodynamics including the wetland and its adjacent rivers provided the inputs to a water allocation model. Using these tools, several management solutions were evaluated, including a baseline scenario where climate changes were combined with the effects of major infrastructure works that are presently envisaged by the local water authority.As a complementary tool for indicators based on poor quantitative data, expert elicitation was incorporated in the decision making process to capture the potential socioeconomic, institutional and ecological impacts of the various management alternatives. Simultaneously, stakeholder consultation (both users and decision markers) was carried out to derive current and future sets of preferences thus determining the criteria weight sets for different user groups. All these elements served as inputs to the DSS choice phase in order to provide a ranking of the proposed management solutions under each management criterion.At present, the option dealing with a moderate landuse substitution and reforestation was the preferred one by local stakeholders. In the future, there could well be an agreement between local actors and governmental agencies when their interests move closer toward more environmentally sustainable landuse. This decision support methodology may facilitate further negotiations toward a sustainable wetland system.
Water use has almost tripled over the past 50 years and in some regions the water demand already ... more Water use has almost tripled over the past 50 years and in some regions the water demand already exceeds supply (Vorosmarty et al., 2000). The world is facing a “global water crisis”; in many countries, current levels of water use are unsustainable, with systems vulnerable to collapse from even small changes in water availability. The need for a scientifically-based assessment of the potential impacts on water resources of future changes, as a basis for society to adapt to such changes, is strong for most parts of the world. Although the focus ...
21st Century Watershed Technology: Improving Water Quality and Environment Conference Proceedings, 29 March - 3 April 2008, Concepcion, Chile, 2008
... Alejandra Stehr1, Patrick Debels1,2, Jose Luis Arumi3 1 Centre for Environmental Sciences EUL... more ... Alejandra Stehr1, Patrick Debels1,2, Jose Luis Arumi3 1 Centre for Environmental Sciences EULA-CHILE, University of Concepción, PO Box 160-C ... India, New Zealand, Chile, etc; (Abu El-Nasr et al., 2005; Eckhardt 2005; Govender & Everson 2005; Cao et al., 2006; Tripathi et al ...
21st Century Watershed Technology: Improving Water Quality and Environment Conference Proceedings, 29 March - 3 April 2008, Concepcion, Chile, 2008
... Alejandra Stehr1, Patrick Debels1,2, Jose Luis Arumi3 1 Centre for Environmental Sciences EUL... more ... Alejandra Stehr1, Patrick Debels1,2, Jose Luis Arumi3 1 Centre for Environmental Sciences EULA-CHILE, University of Concepción, PO Box 160-C ... India, New Zealand, Chile, etc; (Abu El-Nasr et al., 2005; Eckhardt 2005; Govender & Everson 2005; Cao et al., 2006; Tripathi et al ...
Only with a properly designed water quality monitoring network can data be collected that can lea... more Only with a properly designed water quality monitoring network can data be collected that can lead to accurate information extraction. One of the main components of water quality monitoring network design is the allocation of sampling locations. For this ...
Abstract. The Chillán River in Central Chile plays a fundamental role in local society, as a sour... more Abstract. The Chillán River in Central Chile plays a fundamental role in local society, as a source of irrigation and drinking water, and as a sink for urban wastewater. In order to characterize the spatial and temporal variability of surface water quality in the watershed, a Water Quality ...
Abstract. Because of the importance of surface waters from the Chillµn River watershed (Chile) fo... more Abstract. Because of the importance of surface waters from the Chillµn River watershed (Chile) for recreation, agricultural irrigation, and the production of drinking water, local concern about river water quality has increased considerably during the last decade. Agricultural ...
... Alejandra Oyanedel 1 , Claudio Valdovinos 1,2 , Mary sol Azocar 1 , Carolina Moya, Gabriela M... more ... Alejandra Oyanedel 1 , Claudio Valdovinos 1,2 , Mary sol Azocar 1 , Carolina Moya, Gabriela Mancilla 1 , Pablo Pedreros 1 & Ricardo Figueroa 1. ... Castella, E., H. Adalsteinsson, J. Brittain, G. Gislason, A. Lehmann, V. Lencioni, B. Lods-Crozet, B. Maiolini, A. Milner, J. Olafsson, S ...
ABSTRACT The paper presents the development and implementation of a decision support system (DSS)... more ABSTRACT The paper presents the development and implementation of a decision support system (DSS) for wetland management in a river basin context under data scarce conditions. It is shown that by combining hydrological, socioeconomic, institutional and biological indicators in a participative approach, a better understanding of the interactions between the different factors affecting the “wetland socio-ecological system conditions” can be created. For this purpose, mathematical models, expert judgment and stakeholder preferences were combined into an integrated DSS framework.The DSS for the Abras de Mantequilla-Guayas Basin environment was derived from a generic, conceptual Decision Support Framework developed and proposed within the WETWin project, taking into consideration the specific conditions at the case study site. Standard methodologies for the characterization of wetland ecosystem services were applied and used to evaluate the effects of potential management solutions using appropriate criteria to assess the trade-offs.In order to account for the interactions between the river catchment and the wetland system, an embedded modeling framework was adopted in which coupled models for rainfall-runoff and hydrodynamics including the wetland and its adjacent rivers provided the inputs to a water allocation model. Using these tools, several management solutions were evaluated, including a baseline scenario where climate changes were combined with the effects of major infrastructure works that are presently envisaged by the local water authority.As a complementary tool for indicators based on poor quantitative data, expert elicitation was incorporated in the decision making process to capture the potential socioeconomic, institutional and ecological impacts of the various management alternatives. Simultaneously, stakeholder consultation (both users and decision markers) was carried out to derive current and future sets of preferences thus determining the criteria weight sets for different user groups. All these elements served as inputs to the DSS choice phase in order to provide a ranking of the proposed management solutions under each management criterion.At present, the option dealing with a moderate landuse substitution and reforestation was the preferred one by local stakeholders. In the future, there could well be an agreement between local actors and governmental agencies when their interests move closer toward more environmentally sustainable landuse. This decision support methodology may facilitate further negotiations toward a sustainable wetland system.
Water use has almost tripled over the past 50 years and in some regions the water demand already ... more Water use has almost tripled over the past 50 years and in some regions the water demand already exceeds supply (Vorosmarty et al., 2000). The world is facing a “global water crisis”; in many countries, current levels of water use are unsustainable, with systems vulnerable to collapse from even small changes in water availability. The need for a scientifically-based assessment of the potential impacts on water resources of future changes, as a basis for society to adapt to such changes, is strong for most parts of the world. Although the focus ...
21st Century Watershed Technology: Improving Water Quality and Environment Conference Proceedings, 29 March - 3 April 2008, Concepcion, Chile, 2008
... Alejandra Stehr1, Patrick Debels1,2, Jose Luis Arumi3 1 Centre for Environmental Sciences EUL... more ... Alejandra Stehr1, Patrick Debels1,2, Jose Luis Arumi3 1 Centre for Environmental Sciences EULA-CHILE, University of Concepción, PO Box 160-C ... India, New Zealand, Chile, etc; (Abu El-Nasr et al., 2005; Eckhardt 2005; Govender & Everson 2005; Cao et al., 2006; Tripathi et al ...
Uploads
Papers by Patrick Debels