A framework for assessing cumulative effects in watersheds: An introduction to Canadian case studies

From 2008 to 2013, a series of studies supported by the Canadian Water Network were conducted in Canadian watersheds in an effort to improve methods to assess cumulative effects. These studies fit under a common framework for watershed cumulative effects assessment (CEA). This article presents an introduction to the Special Series on Watershed CEA in IEAM including the framework and its impetus, a brief introduction to each of the articles in the series, challenges, and a path forward. The framework includes a regional water monitoring program that produces 3 core outputs: an accumulated state assessment, stressor-response relationships, and development of predictive cumulative effects scenario models. The framework considers core values, indicators, thresholds, and use of consistent terminology. It emphasizes that CEA requires 2 components, accumulated state quantification and predictive scenario forecasting. It recognizes both of these components must be supported by a regional, multiscale monitoring program.

[1]  Monique G. Dubé,et al.  Cumulative effect assessment in Canada: a regional framework for aquatic ecosystems , 2003 .

[2]  Monique G Dubé,et al.  Development of an effects-based approach for watershed scale aquatic cumulative effects assessment. , 2013, Integrated environmental assessment and management.

[3]  Dick de Zwart,et al.  Diagnosis of Ecosystem Impairment in a Multiple-Stress Context—How to Formulate Effective River Basin Management Plans , 2009, Integrated environmental assessment and management.

[4]  Monique G Dubé,et al.  Assessing large spatial scale landscape change effects on water quality and quantity response in the lower Athabasca River basin , 2013, Integrated environmental assessment and management.

[5]  R. Lanno,et al.  QUANTIFYING STREAM ECOSYSTEM CONDITION: NEW APPROACHES TO DEVELOPING DECISION CRITERIA AND DIAGNOSTIC TOOLS , 1996 .

[6]  W. Landis,et al.  Developing A Regional Ecological Risk Assessment: A Case Study of a Tasmanian Agricultural Catchment , 2001 .

[7]  B. Noble,et al.  Valued ecosystem components for watershed cumulative effects: An analysis of environmental impact assessments in the South Saskatchewan River watershed, Canada , 2013, Integrated environmental assessment and management.

[8]  Kelly R Munkittrick,et al.  A review of potential methods of determining critical effect size for designing environmental monitoring programs , 2009, Environmental toxicology and chemistry.

[9]  Lorne A. Greig,et al.  Scenario analysis in environmental impact assessment: Improving explorations of the future , 2007 .

[10]  Julie Wilson,et al.  Accumulated state of the Yukon River watershed: Part I critical review of literature , 2013, Integrated environmental assessment and management.

[11]  Making the case for cumulative impacts assessment: Modelling the potential impacts of climate change, harvesting, oil and gas, and fire , 2008 .

[12]  Accumulated state assessment of the Peace‐Athabasca‐Slave River system , 2013, Integrated environmental assessment and management.

[13]  Monique G. Dubé,et al.  Integration of Effects-Based and Stressor-Based Approaches into a Holistic Framework for Cumulative Effects Assessment in Aquatic Ecosystems , 2001 .

[14]  Peter N. Duinker,et al.  An Ecological Framework for Environmental Impact Assessment , 1984 .

[15]  L. Reid,et al.  Research and cumulative watershed effects , 1993 .

[16]  R. E. Bartolo,et al.  Regional Ecological Risk Assessment for Australia's Tropical Rivers: Application of the Relative Risk Model , 2012 .

[17]  Hubert N. van Lier.  The role of land use planning in sustainable rural systems , 1998 .

[18]  Werner Brack,et al.  Toward a Holistic and Risk-Based Management of European River Basins , 2009, Integrated environmental assessment and management.

[19]  Dennis C. Duro,et al.  Comparative analysis of regional water quality in Canada using the Water Quality Index , 2009, Environmental monitoring and assessment.

[20]  T. Reynoldson,et al.  The Reference Condition: A Comparison of Multimetric and Multivariate Approaches to Assess Water-Quality Impairment Using Benthic Macroinvertebrates , 1997, Journal of the North American Benthological Society.

[21]  Monique G Dubé,et al.  Accumulated state assessment of the Yukon River watershed: part II quantitative effects-based analysis integrating Western science and traditional ecological knowledge. , 2013, Integrated environmental assessment and management.

[22]  Xinhao Wang,et al.  Integrating water-quality management and land-use planning in a watershed context. , 2001, Journal of environmental management.

[23]  Lorne A. Greig,et al.  A proposal for further strengthening science in environmental impact assessment in Canada , 2011 .

[24]  M. Dubé,et al.  Regional reference variation provides ecologically meaningful protection criteria for northern World Heritage Site , 2010, Integrated environmental assessment and management.

[25]  J. Hunt,et al.  Ecotoxicologic impacts of agricultural drain water in the Salinas River, California, USA , 2003, Environmental toxicology and chemistry.

[26]  Harry Spaling,et al.  Cumulative Effects Assessment Practitioners Guide , 1999 .

[27]  Dennis C. Duro,et al.  Scale, assessment components, and reference conditions: Issues for cumulative effects assessment in Canadian watersheds , 2013, Integrated environmental assessment and management.

[28]  Craig R. Nitschke,et al.  The cumulative effects of resource development on biodiversity and ecological integrity in the Peace-Moberly region of Northeast British Columbia, Canada , 2008, Biodiversity and Conservation.

[29]  B W Kilgour,et al.  Aquatic Environmental Effects Monitoring Guidance for Environmental Assessment Practitioners , 2007, Environmental monitoring and assessment.

[30]  Karen Bakker,et al.  Eau Canada: The Future of Canada's Water , 2006 .

[31]  Wayne G. Landis,et al.  A Bayesian Approach to Landscape Ecological Risk Assessment Applied to the Upper Grande Ronde Watershed, Oregon , 2012 .

[32]  J. Diamond,et al.  Identifying sources of stress to native aquatic fauna using a watershed ecological risk assessment framework. , 2001, Environmental science & technology.

[33]  Zhifeng Yang,et al.  Development of a relative risk model for evaluating ecological risk of water environment in the Haihe River Basin estuary area. , 2012, The Science of the total environment.

[34]  Joseph M. Culp,et al.  A weight‐of‐evidence approach for Northern river risk assessment: Integrating the effects of multiple stressors , 2000 .

[35]  Lorne A. Greig,et al.  The Impotence of Cumulative Effects Assessment in Canada: Ailments and Ideas for Redeployment , 2006, Environmental management.