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Economic effects of the invasive worm Marenzelleria spp. in the Baltic Sea

Gren, Ing-Marie and Sandman Nyström, Antonia and Näslund, Johan (2016). Economic effects of the invasive worm Marenzelleria spp. in the Baltic Sea. Uppsala: (NL, NJ) > Dept. of Economics, Sveriges lantbruksuniversitet. Working paper series / Swedish University of Agricultural Sciences, Department of Economics ; 2016:11
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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.

Authors/Creators:Gren, Ing-Marie and Sandman Nyström, Antonia and Näslund, Johan
Title:Economic effects of the invasive worm Marenzelleria spp. in the Baltic Sea
Series/Journal:Working paper series / Swedish University of Agricultural Sciences, Department of Economics (1401-4068)
Year of publishing :2016
Number:2016:11
Number of Pages:27
Place of Publication:Uppsala
Publisher:Department of economics, Swedish University of Agricultural Sciences.
ISSN:1401-4068
Language:English
Publication Type:Report
Article category:Other scientific
Full Text Status:Public
Agris subject categories.:M Aquatic sciences and fisheries > M40 Aquatic ecology
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Oceanography, Hydrology, Water Resources
(A) Swedish standard research categories 2011 > 5 Social Sciences > 502 Economics and Business > Economics
Agrovoc terms:invasive species, annelida, estimated costs, eutrophication, cost analysis, baltic sea
Keywords:invasive species, Marenzelleria, costs, eutrophication, dynamic cost effectiveness, Baltic Sea
URN:NBN:urn:nbn:se:slu:epsilon-e-3833
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3833
ID Code:13889
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Economics
Deposited By: SLUpub Connector
Deposited On:14 Dec 2016 11:04
Metadata Last Modified:15 Dec 2016 12:31

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