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Valuing beach cast utilization and addressing preference uncertainty
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik. (Industrial Ecology)ORCID-id: 0000-0003-1949-4891
Lund University.
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Abstract [en]

Eutrophication and global warming have created major problems with decaying macroalgae on Baltic Sea beaches. A considerable amount of this biomass is retrieved, only to be returned to the sea when the tourist season ends. It is therefore essential to implement systems whereby the retrieved biomass is utilised. One potential system is anaerobic digestion for biogas and biofertiliser recovery, but knowledge about non-market benefits is lacking. This study estimated the willingness-to-pay (WTP) for algae retrieval and utilisation in a case study area and examined methods for incorporating preference uncertainty information into WTP estimates. This was done by gathering data using two different methods and comparing the results. In addition, results obtained from an open-ended interval (OEI) format were compared with those from a payment card. A substantial mean WTP was found. The two elicitation formats produced similar mean WTP estimates. However, the OEI format produced weaker results, with a significantly higher level of stated preference uncertainty and an elevated zero response rate. Comparisons of preference uncertainty information gathered with two different methods yielded unexpected results and to some extent contradicted findings on interval size in the OEI format as a good measure of preference uncertainty.

Nyckelord [en]
willingness-to-pay, biogas, Baltic Sea, macroalgae, preference uncertainty, contingent valuation
Nationell ämneskategori
Miljövetenskap
Identifikatorer
URN: urn:nbn:se:kth:diva-156385OAI: oai:DiVA.org:kth-156385DiVA, id: diva2:766248
Anmärkning

QC 20141126

Tillgänglig från: 2014-11-26 Skapad: 2014-11-26 Senast uppdaterad: 2014-11-26Bibliografiskt granskad
Ingår i avhandling
1. Sustainability Aspects of Bioenergy and Nutrient Recovery from Marine Biomass: Baltic Sea case studies
Öppna denna publikation i ny flik eller fönster >>Sustainability Aspects of Bioenergy and Nutrient Recovery from Marine Biomass: Baltic Sea case studies
2014 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Coastal areas around the world are experiencing environmental problems such as climate change and eutrophication. These, in turn, lead to emerging challenges with excessive amounts of biomass that impact coastal communities. Developing utilisation strategies for marine biomass is therefore highly relevant and forms part of the blue growth research field. In response to environmental concerns, as a waste management strategy and as part of blue growth research initiatives, several Baltic Sea coastal projects have been initiated in recent years to study utilisation of maritime biomass. However, the sustainability of these utilisation strategies has not been critically appraised. Therefore, the work presented in this thesis explored some key sustainability aspects of two Baltic Sea case studies utilising common reed (Kalmar, Sweden) and mass-occurring filamentous macroalgae (Trelleborg, Sweden) for biogas and biofertiliser recovery. Energy analyses suggested that both case studies could provide a positive energy balance and have the potential to achieve nutrient recovery. Moreover, a contingent valuation study in Trelleborg demonstrated considerable welfare benefits of biomass utilisation. These findings indicate that marine biomass utilisation strategies highlight potential to contribute to environmental and welfare benefits of these coastal communities.

Ort, förlag, år, upplaga, sidor
Stockholm: KTH Royal Institute of Technology, 2014. s. xii, 57
Serie
TRITA-IM, ISSN 1402-7615 ; 2014:03
Nationell ämneskategori
Miljövetenskap
Forskningsämne
Industriell ekologi
Identifikatorer
urn:nbn:se:kth:diva-156377 (URN)978-91-7595-365-6 (ISBN)
Disputation
2014-12-18, F3, Lindstedtsvägen 26, KTH, Stockholm, 09:00 (Engelska)
Opponent
Handledare
Forskningsfinansiär
Formas, Grant number 229-2009-468
Anmärkning

QC 20141126

Tillgänglig från: 2014-11-26 Skapad: 2014-11-26 Senast uppdaterad: 2014-12-02Bibliografiskt granskad

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Risén, EmmaMalmström, Maria E.Gröndahl, Fredrik

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Risén, EmmaMalmström, Maria E.Gröndahl, Fredrik
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Hållbar utveckling, miljövetenskap och teknik
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