Barkmann, Jan

[["dc.bibliographiccitation.firstpage","125"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Ciencia e investigación agraria"],["dc.bibliographiccitation.lastpage","137"],["dc.bibliographiccitation.volume","43"],["dc.contributor.author","Huenchuleo, Carlos A"],["dc.contributor.author","Barkmann, Jan"],["dc.contributor.author","Marggraf, Rainer"],["dc.date.accessioned","2020-12-10T18:47:43Z"],["dc.date.available","2020-12-10T18:47:43Z"],["dc.date.issued","2016"],["dc.description.abstract","A respondent's preference for non-market goods depends not only on the attributes of the goods but also on the respondent's attitude towards the goods being valued. Accounting for these characteristics may substantially improve the ability of stated choice models to represent preference heterogeneity. In this regard, we analyzed the influence of respondent attitudes on the valuation of river ecosystem quality attributes affected by pulp mill wastewater in two central Chilean watersheds. We applied the Choice Experiment (CE) method to assess preferences on river pollution risk, water quality effects, threatened species and the yield in local fisheries. The payment vehicle was an additional annual charge to the electricity bill. All three environmental attributes and the payment attribute were highly significant determinants of choice (P <= 0.001). A calculated mean WTP value for an optimistic policy scenario was 13 USD/year per household. As hypothesized, attitudes influenced stated respondent preferences with some differences between the two studied watersheds. Overall, our findings suggest that attitudinal variables deserve more attention in the analysis of preferences for water resource improvements in emerging economies."],["dc.identifier.doi","10.4067/S0718-16202016000100011"],["dc.identifier.eissn","0718-1620"],["dc.identifier.isi","000384739400011"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/78859"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pontificia Univ Catolica Chile, Fac Agronomia Ingenieria Forestal"],["dc.relation.issn","0718-1620"],["dc.rights","CC BY 4.0"],["dc.title","Attitudinal determinants of willingness-to-pay for river ecosystem improvements in central Chile: A choice experiment"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4973"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Proceedings of the National Academy of Sciences"],["dc.bibliographiccitation.lastpage","4978"],["dc.bibliographiccitation.volume","104"],["dc.contributor.author","Steffan-Dewenter, Ingolf"],["dc.contributor.author","Kessler, Michael"],["dc.contributor.author","Barkmann, Jan"],["dc.contributor.author","Bos, Merijn M."],["dc.contributor.author","Buchori, Damayanti"],["dc.contributor.author","Erasmi, Stefan"],["dc.contributor.author","Faust, Heiko"],["dc.contributor.author","Gerold, Gerhard"],["dc.contributor.author","Glenk, Klaus"],["dc.contributor.author","Gradstein, S. Robbert"],["dc.contributor.author","Guhardja, Edi"],["dc.contributor.author","Harteveld, Marieke"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Höhn, Patrick"],["dc.contributor.author","Kappas, Martin"],["dc.contributor.author","Köhler, Stefan"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Maertens, Miet"],["dc.contributor.author","Marggraf, Rainer"],["dc.contributor.author","Migge-Kleian, Sonja"],["dc.contributor.author","Mogea, Johanis"],["dc.contributor.author","Pitopang, Ramadhanil"],["dc.contributor.author","Schaefer, Matthias"],["dc.contributor.author","Schwarze, Stefan"],["dc.contributor.author","Sporn, Simone G."],["dc.contributor.author","Steingrebe, Andrea"],["dc.contributor.author","Tjitrosoedirdjo, Sri Sudarmiyati"],["dc.contributor.author","Tjitrosoemito, Soekisman"],["dc.contributor.author","Twele, André"],["dc.contributor.author","Weber, Robert"],["dc.contributor.author","Woltmann, Lars"],["dc.contributor.author","Zeller, Manfred"],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:44:51Z"],["dc.date.accessioned","2020-05-11T13:28:11Z"],["dc.date.available","2017-09-07T11:44:51Z"],["dc.date.available","2020-05-11T13:28:11Z"],["dc.date.issued","2007"],["dc.description.abstract","Losses of biodiversity and ecosystem functioning due to rainforest destruction and agricultural intensification are prime concerns for science and society alike. Potentially, ecosystems show nonlinear responses to land-use intensification that would open management options with limited ecological losses but satisfying economic gains. However, multidisciplinary studies to quantify ecological losses and socioeconomic tradeoffs under different management options are rare. Here, we evaluate opposing land use strategies in cacao agroforestry in Sulawesi, Indonesia, by using data on species richness of nine plant and animal taxa, six related ecosystem functions, and on socioeconomic drivers of agroforestry expansion. Expansion of cacao cultivation by 230% in the last two decades was triggered not only by economic market mechanisms, but also by rarely considered cultural factors. Transformation from near-primary forest to agroforestry had little effect on overall species richness, but reduced plant biomass and carbon storage by ≈75% and species richness of forest-using species by ≈60%. In contrast, increased land use intensity in cacao agroforestry, coupled with a reduction in shade tree cover from 80% to 40%, caused only minor quantitative changes in biodiversity and maintained high levels of ecosystem functioning while doubling farmers' net income. However, unshaded systems further increased income by ≈40%, implying that current economic incentives and cultural preferences for new intensification practices put shaded systems at risk. We conclude that low-shade agroforestry provides the best available compromise between economic forces and ecological needs. Certification schemes for shade-grown crops may provide a market-based mechanism to slow down current intensification trends."],["dc.identifier.doi","10.1073/pnas.0608409104"],["dc.identifier.gro","3148984"],["dc.identifier.scopus","2-s2.0-34247633507"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5623"],["dc.identifier.url","http://www.scopus.com/inward/record.url?eid=2-s2.0-34247633507&partnerID=MN8TOARS"],["dc.language.iso","en"],["dc.notes.intern","Faust Crossref Import"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.eissn","1091-6490"],["dc.relation.issn","0027-8424"],["dc.title","Tradeoffs between income, biodiversity, and ecosystem functioning during tropical rainforest conversion and agroforestry intensification"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","114"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","GAIA - Ecological Perspectives for Science and Society"],["dc.bibliographiccitation.lastpage","121"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Rajmis, Sandra"],["dc.contributor.author","Barkmann, Jan"],["dc.contributor.author","Marggraf, Rainer"],["dc.date.accessioned","2018-11-07T08:47:42Z"],["dc.date.available","2018-11-07T08:47:42Z"],["dc.date.issued","2010"],["dc.description.abstract","According to the German Advisory Council on Global Change, the so-called Pythia and Pandora risk types pose particular challenges to environmental management due to their potentially catastrophic nature. At present, neither their damage potential nor their probability distribution can be estimated. Fortunately, there is evidence that a partial protection against such risks is possible. The respective measures focus on maintaining biological diversity and fundamental ecosystem functions. However, there is no economically quantified information on the amount of societal resources that should be committed to such a protection against ecological risks. We outline the fundamentals of ecological risk precaution strategies in the face of a highly uncertain future, and provide an empirical estimation of the population's willingness to pay for these strategies."],["dc.identifier.isi","000279151700009"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/21022"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oekom Verlag"],["dc.relation.issn","0940-5550"],["dc.title","Pythia's Revenge: On the Economic Value of Ecological Risk Precaution"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","71"],["dc.bibliographiccitation.journal","Procedia - Social and Behavioral Sciences"],["dc.bibliographiccitation.lastpage","82"],["dc.bibliographiccitation.volume","4"],["dc.contributor.author","Gamboa, Vladimir Gonzalez"],["dc.contributor.author","Barkmann, Jan"],["dc.contributor.author","Marggraf, Rainer"],["dc.date.accessioned","2019-07-09T11:40:45Z"],["dc.date.available","2019-07-09T11:40:45Z"],["dc.date.issued","2010"],["dc.description.abstract","A case study in South Ecuador serves as an example to understand the dynamics of adoption of agroforestry species. Qualitative research shows that there are potential differences in adoption between two ethnic groups. The adoption rate of Saraguro communal leaders may be an indicator of lower contagion than Mestizo-colonos. Thus, we propose a heterogeneous diffusion model that addresses network exposure effects and a generalized blockmodel for relational data analysis. We hypothesize that Mestizo-colonos have higher adoption rate than Saraguros. The Saraguro indigenous group may have lower access to the information necessary for the adoption of the innovation than Mestizo-Colonos."],["dc.identifier.doi","10.1016/j.sbspro.2010.07.484"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11281"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58239"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY-NC-ND 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by-nc-nd/3.0"],["dc.title","Social network effects on the adoption of agroforestry species: Preliminary results of a study on differences on adoption patterns in Southern Ecuador"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","61"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Climate Research"],["dc.bibliographiccitation.lastpage","73"],["dc.bibliographiccitation.volume","40"],["dc.contributor.author","Rajmis, Sandra"],["dc.contributor.author","Barkmann, Jan"],["dc.contributor.author","Marggraf, Rainer"],["dc.date.accessioned","2018-11-07T08:34:07Z"],["dc.date.available","2018-11-07T08:34:07Z"],["dc.date.issued","2009"],["dc.description.abstract","In contemporary media discourse, suggestions for publicly mandated climate change mitigation or adaptation measures are frequently challenged from a cost perspective. However, empirical data on the actual economic appreciation of local mitigation and adaptation measures expressed as citizen willingness-to-pay (WTP) are scarce. In this paper, we report results of a preference survey using a choice experiment (CE) that quantifies economic preferences for biodiversity-based climate change mitigation and adaptation in the region surrounding Hainich National Park (Thuringia, Germany). A representative sample of 302 respondents-the majority of them frequent Hainich forest visitors-was interviewed in autumn 2006. Nested logit analysis showed that respondents state a substantially positive WTP for climate change mitigation by afforestation (p < 0.001). If converted to WTP for an additional sequestration of carbon that average German citizens emit as CO(2), a monetary value of 7.34 (sic) yr(-1) t C(-1) is obtained. For increasing forest resistance and resilience against insect pests and storms (climate change adaptation) a WTP of 27.54 (sic) yr(-1) (p < 0.001) is obtained, and 16.83 (sic) yr(-1) (p < 0.001) is obtained for increasing the general resilience and resistance of forest ecosystems to environmental stressors. Respondents support moderate programs to eradicate invasive plants when compared to more aggressive eradication measures. Due to the lack of comparable studies, it can only be conservatively assumed that WTP would be lower if mitigation and adaptation measures were to be implemented in forests not, or only rarely, used by respondents. As all proposed means for climate change mitigation and adaptation contribute to local forest ecosystem biodiversity, the results of the study advocate the realization of measures that potentially benefit both climate policy and regional conservation concerns,"],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft (DFG Graduiertenkolleg) [1086]"],["dc.identifier.doi","10.3354/cr00803"],["dc.identifier.isi","000272135600005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/17744"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Inter-research"],["dc.relation.issn","0936-577X"],["dc.title","User community preferences for climate change mitigation and adaptation measures around Hainich National Park, Germany"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1517"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Regional Environmental Change"],["dc.bibliographiccitation.lastpage","1531"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Cerda, Claudia"],["dc.contributor.author","Barkmann, Jan"],["dc.contributor.author","Marggraf, Rainer"],["dc.date.accessioned","2018-11-07T09:37:17Z"],["dc.date.available","2018-11-07T09:37:17Z"],["dc.date.issued","2014"],["dc.description.abstract","The island of Navarino, Chile, located at the extreme southern end of the Americas, is one of the few regions in the world with undivided and only slightly transformed temperate forests. Currently, fundamental issues are being addressed, such as how local fuel wood demands will be met without destroying primary forests and how a sustainable tourism industry may be developed. This study aims to inform these planning processes by providing data on the economic valuation of several non-market benefits provided by the temperate ecosystems of Navarino Island that have relevance to the local population. We focus this valuation on landscape esthetics, nature access restrictions, esthetic and ethno-symbolic benefits at the species level and the existence value of non-vascular endemic species. A choice experiment was applied to a sample of local residents (n = 230). Decisions about future development strategies were influenced by landscape esthetics being threatened by progressing levels of tourist infrastructure, nature access restrictions in favor of both economic and conservationist concerns, continued visits of an ethno-culturally important hummingbird, the protection of a moss endemic to the sub-Antarctic forests and species diversity. From a non-market valuation perspective, local residents favor a low-impact tourism development scenario. Little is known about the monetary value of Chile's temperate forests. Knowledge of the economic value of Navarino's temperate forests facilitates the understanding of local natural resource management at the microlevel and assists in formulating conservation policies at the regional and national levels."],["dc.description.sponsorship","BMBF (German Federal Ministry of Education and Research), FKZ [01LM0208]"],["dc.identifier.doi","10.1007/s10113-014-0591-2"],["dc.identifier.isi","000339736700019"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/32806"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Heidelberg"],["dc.relation.issn","1436-378X"],["dc.relation.issn","1436-3798"],["dc.title","Non-market economic valuation of the benefits provided by temperate ecosystems at the extreme south of the Americas"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","119"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","GAIA - Ecological Perspectives for Science and Society"],["dc.bibliographiccitation.lastpage","126"],["dc.bibliographiccitation.volume","18"],["dc.contributor.author","Schmidt, Gunther"],["dc.contributor.author","Kleppin, Lukas"],["dc.contributor.author","Schroeder, Winfried"],["dc.contributor.author","Breckling, Broder"],["dc.contributor.author","Reuter, Hauke"],["dc.contributor.author","Eschenbach, Christiane"],["dc.contributor.author","Windhorst, Wilhelm"],["dc.contributor.author","Hoeltl, Karen"],["dc.contributor.author","Wurbs, Angelika"],["dc.contributor.author","Barkmann, Jan"],["dc.contributor.author","Marggraf, Rainer"],["dc.contributor.author","Thiel, Manuel"],["dc.date.accessioned","2018-11-07T08:34:31Z"],["dc.date.available","2018-11-07T08:34:31Z"],["dc.date.issued","2009"],["dc.description.abstract","The GeneRisk research consortium analysed the implications of the cultivation of genetically modified organisms (GMO). The risks involved transcend the borders of very different systems. Therefore, they need to be analysed using interdisciplinary and transdisciplinary approaches. One central scientific issue was the assessment of the spatial implications of GMO cultivation for areas of large extent, examining Bt-maize as the currently most relevant GM crop and oilseed rape as an additional example."],["dc.identifier.isi","000267438100008"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/17839"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oekom Verlag"],["dc.relation.issn","0940-5550"],["dc.title","Systemic Risks of Genetically Modified Organisms in Crop Production: Interdisciplinary Perspective"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","250"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","GAIA - Ecological Perspectives for Science and Society"],["dc.bibliographiccitation.lastpage","254"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Barkmann, Jan"],["dc.contributor.author","Marggraf, Rainer"],["dc.date.accessioned","2018-11-07T08:47:42Z"],["dc.date.available","2018-11-07T08:47:42Z"],["dc.date.issued","2010"],["dc.identifier.isi","000286040300002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/21023"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oekom Verlag"],["dc.relation.issn","0940-5550"],["dc.title","Stated Preference Valuation of Environmental Goods: Really \"Hands Off!\"?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","207"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Environment and Development Economics"],["dc.bibliographiccitation.lastpage","224"],["dc.bibliographiccitation.volume","18"],["dc.contributor.author","Cerda, Claudia"],["dc.contributor.author","Barkmann, Jan"],["dc.contributor.author","Marggraf, Rainer"],["dc.date.accessioned","2018-11-07T09:26:49Z"],["dc.date.available","2018-11-07T09:26:49Z"],["dc.date.issued","2013"],["dc.description.abstract","A choice experiment was applied to measure the existence value of an endemic moss. We assessed value separation, embedding or warm glow and 'ethical' motivations. We exemplify our application by valuing an inconspicuous moss endemic to Chile's sub-Antarctic region. The choice experiment was administered to a sample of local residents of Navarino Island (southern Chile). The design isolates the existence value by requiring respondents to make simultaneous tradeoffs between moss existence value, five other biodiversity-related values and income changes. Insensitivity to scope was addressed by using degrees of extinction risks. We predominantly use a willingness-to-accept design of the payment vehicle to avoid protest responses. A meaningful marginal value for the existence of an endemic species for Navarino island residents was documented. The design, based on varying degrees of extinction risk, avoided a strong effect of warm glow. No protest responses motivated by ethical concerns were encountered."],["dc.identifier.isi","000316190400005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30385"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Cambridge Univ Press"],["dc.relation.issn","1469-4395"],["dc.relation.issn","1355-770X"],["dc.title","Application of choice experiments to quantify the existence value of an endemic moss: a case study in Chile"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","42"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Ecology and Society"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Hänke, Hendrik"],["dc.contributor.author","Barkmann, Jan"],["dc.contributor.author","Coral, Claudia"],["dc.contributor.author","Enfors Kaustky, Elin"],["dc.contributor.author","Marggraf, Rainer"],["dc.date.accessioned","2020-12-10T18:48:01Z"],["dc.date.available","2020-12-10T18:48:01Z"],["dc.date.issued","2017"],["dc.description.abstract","The semiarid Mahafaly region in southwestern Madagascar is not only a unique biodiversity hotspot, but also one of the poorest regions in the world. Crop failures occur frequently, and despite a great number of rural development programs, no effective progress in terms of improved yields, agricultural income, or well-being among farming households has been observed. In addition to the severe development challenges in the region, environmental degradation and the loss of biodiversity are prevailing issues. This paper takes a social-ecological systems perspective to analyze why the region appears locked in poverty. Specifically, we address the social-ecological interaction between environmental factors such as low and variable precipitation, the lack of sustainable intensification in agriculture resulting in recalcitrant hunger, and several environmental degradation trends. The study is based on (i) longitudinal data from 150 farming households interviewed at high temporal resolution during the course of 2014, and (ii) extensive recall surveys from the southwestern Madagascar project region. The analysis reveals a complex interplay of pronounced seasonality in income generation due to recurrent droughts and crop failures making local farmers highly risk averse. This interplay results in a gradual depletion of environmental assets and hinders the accumulation of capital in the hands of smallholder farmers, and improvements in agricultural production even where environmental conditions would allow for it. As a result, households are insufficiently buffered and insured against repetitive income and food security shocks. This can be understood as a set of interacting, partly nested social-ecological traps, which entrench the Mahafalian smallholder population in deep poverty while the productivity of the environment declines. We provide new insights on the interplay between hunger, poverty, and loss of environmental assets in a global biodiversity hotspot. Finally, we propose a set of key issues that need to be considered to unlock this severe lock-in and enable transformation toward a more sustainable development in southwestern Madagascar."],["dc.identifier.doi","10.5751/ES-09130-220142"],["dc.identifier.isi","000399397700047"],["dc.identifier.issn","1708-3087"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14954"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/78981"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Resilience Alliance"],["dc.relation.issn","1708-3087"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Social-ecological traps hinder rural development in southwestern Madagascar"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]