S-WoPEc
 
Scandinavian Working Papers in Economics
HomeAboutSeriesSubject/JEL codesAdvanced Search
Department Economics, Swedish University of Agricultural Sciences Working Paper Series, Department Economics, Swedish University of Agricultural Sciences

No 2016:11:
Economic effects of the invasive worm Marenzelleria spp. in the Baltic Sea

Ing-Marie Gren (), Antonia Nyström Sandman and Johan Näslund

Abstract: Impacts of alien marine species on ecosystem services have been documented in numerous studies, but studies on the estimation of costs with an explicit quantification of the impact channels are lacking. We calculated costs of the invasive worm Marenzelleria in the Baltic Sea, which affects sea bottoms capacity to store nutrients. A reduced capacity implies higher costs for reaching nutrient reduction targets. Therefore, the costs were calculated by taking the difference in minimum costs of attaining nutrient targets with and without the presence of the invasive species. To this end, we developed a simple dynamic model which captures the effect of the invasive species on the decay rates of nutrient pools in different and interconnected sea basins in the Baltic Sea. Evidence and numerical estimates were found for a decrease in sequestration of phosphorus in the different sea basins caused by the occurrence of the invasive worm. The results indicated a cost of this effect that ranges between 167 billion SEK and 732 billion SEK depending on the effect of Marenzelleria on sequestration of phosphorus. This cost corresponds to 0.02-0.08% of total gross domestic product of the nine coastal countries. However, the cost is unevenly distributed among the countries, where Poland bears the largest part because of its large phosphorus loads and access to low cost options.

Keywords: invasive species; Marenzelleria; costs; nutrients; eutrophication; dynamic cost effectiveness; Baltic Sea; (follow links to similar papers)

JEL-Codes: Q25; Q28; Q53; (follow links to similar papers)

27 pages, December 3, 2016

Before downloading any of the electronic versions below you should read our statement on copyright.
Download GhostScript for viewing Postscript files and the Acrobat Reader for viewing and printing pdf files.

Full text versions of the paper:

Working%20paper?preview=Cost+of+Manz+WP.pdf    PDF-file
Download Statistics

Questions (including download problems) about the papers in this series should be directed to Elizabeth Hillerius ()
Report other problems with accessing this service to Sune Karlsson () or Helena Lundin ().

Programing by
Design by Joachim Ekebom

Handle: RePEc:hhs:slueko:2016_011 This page was generated on 2016-12-03 16:41:57