The research was carried out by the University of Exeter and Peruvian conservation organization Pro Delphinus. While these are significant distances, the dolphins' ranges spanned over 50km on average, and dams and dredging can affect large stretches of river habitats.Īdditionally, many Amazon river dolphins-already an endangered species-live closer to the proposed sites than the seven males and one female tagged in this study. Dolphins were found to be an average of 252km from the nearest proposed dam and 125km from the nearest proposed dredging site. Proceedings of the 2nd International Conference on Dredging and Dredged Material Placement.On average, 89% of the dolphins' home "range" (the area they live in) was used for fishing. International Conference on Dredging and Dredged Material Placement National Spatial Data Infrastructure and its usefulness to the dredging community Efforts have been made by the Federal Geographic Data Committee (FGDC) and the creation of a National Spatial Data Infrastructure (NSDI) as an element of the National Information Highway has helped in solving some of the problems of the unavailability and unacceptability of data needed to support the applications. New data are becoming available to allow the examination of the consequences of dredging in a manner not done before. The solution to understanding the dredging impacts is the type of scenario that lends itself to new approaches to understanding interrelationships between multiple variables within a dynamic environment.
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