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Cost-effective nutrient reductions to coupled heterogeneous marine water basins: An application to the Baltic Sea
Authors:Email author" target="_blank">I-M?GrenEmail author  F?Wulff
Institution:(1) National Institute of Economic Research, Box 3116, 10316 Stockholm, Sweden;(2) Beijer International Institute of Ecological Economics, Box 50005, 10405 Stockholm, Sweden;(3) Department of System Ecology, Stockholm University, 10691 Stockholm, Sweden
Abstract:In this paper, the role of nutrient transports between marine basins is investigated for cost-effective solutions to predetermined marine basin targets. The interdependent advective nutrient transports as well as retentions among the seven major marine basins of the Baltic Sea are described by input-output analysis. This is in contrast to prior economic studies of transboundary water pollution that include only direct transport between the basins. The analytical results show that the difference in impacts between transport specifications depends mainly on the lsquoopennessrsquo of the basins, that is, their transports with other basins. The application on Baltic Sea shows significant differences in costs and policy design between the nutrient transport specifications. The reason is that the Sea is characterized by long water and nutrient residence times, so relatively large part of nutrients are transported among basins.
Keywords:Minimum costs  Nitrogen  Phosphorous  Marine transports  Baltic Sea
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