Cumulative effects assessments : an evaluation of DFO Science research options / G.S. Jamieson and L. Chew. : Fs70-1/2000-105E-PDF

Resource managers are increasingly becoming concerned about the cumulative effects arising from different environmental impacts, and how such effects should be considered in a regulatory manner. This paper presents a literature review of the subject in general, discusses the complexities of adequately assessing cumulative effects issues, and reviews how cumulative effect review processes relating to the aquatic and marine environments have been addressed. A still generic problem is that, although guidelines imposed by agencies often now specify that an assessor must consider the cumulative effects of potential impacts, there are no widely accepted methodologies outlined on how to do so quantitatively with respect to aquatic and marine environments. In fact, the difficulties in conducting assessments over the spatial and temporal scales involved suggest that developing such methodologies will be years away. This paper suggests a cost-effective short term approach that models discrete systems in a manner that will show managers and the interested public some of the consequences of accepted minor impacts that are cumulatively expressed. Suggestions and recommendations on how such models can best be developed at this time are provided.

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