Rötter, Reimund Paul

[["dc.bibliographiccitation.firstpage","519"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Agronomy for Sustainable Development"],["dc.bibliographiccitation.lastpage","530"],["dc.bibliographiccitation.volume","33"],["dc.contributor.author","Ketoja, Elise"],["dc.contributor.author","Himanen, Sari J."],["dc.contributor.author","Rötter, Reimund P."],["dc.contributor.author","Hakala, Kaija"],["dc.contributor.author","Kahiluoto, Helena"],["dc.contributor.author","Salo, Tapio"],["dc.date.accessioned","2018-05-19T13:05:00Z"],["dc.date.available","2018-05-19T13:05:00Z"],["dc.date.issued","2013"],["dc.description.abstract","This study shows an average yield increase of 415–1,338 kg ha−1 per unit increase of the Shannon diversity index for feed barley cultivar use. There is a global quest to increase food production sustainably. Therefore, judicious farmer choices such as selection of crop cultivars are increasingly important. Cultivar diversity is limited and, as a consequence, corresponding crop yields are highly impacted by local weather variations and global climate change. Actually, there is little knowledge on the relationships between yields of regional crops and cultivar diversity, that is evenness and richness in cultivar use. Here, we hypothesized that higher cultivar diversity is related to higher regional yield. We also assumed that the diversity-yield relationship depends on weather during the growing season. Our data were based on farm yield surveys of feed and malting barley, Hordeum vulgare L.; spring wheat, Triticum aestivum L.; and spring turnip rape, Brassica rapa L. ssp. oleifera, from 1998 to 2009, representing about 4,500–5,500 farms annually. We modeled the relationships between regional yields and Shannon diversity indices in high-yielding (south-west) and low-yielding (central-east) regions of Finland using linear mixed models. Our results show that an increase of Shannon diversity index increases yield of feed barley. Feed barley had also the greatest cultivar diversity. In contrast, an average yield decrease of 1,052 kg ha−1 per unit increase in Shannon index was found for spring rape in 2006 and 2008. Our findings show that cultivar diversification has potential to raise mean regional yield of feed barley. Increasing cultivar diversity thus offers a novel, sustainability-favoring means to promote higher yields."],["dc.identifier.doi","10.1007/s13593-012-0120-y"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/14674"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Cultivar diversity has great potential to increase yield of feed barley"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","186"],["dc.bibliographiccitation.journal","Global Environmental Change"],["dc.bibliographiccitation.lastpage","193"],["dc.bibliographiccitation.volume","25"],["dc.contributor.author","Kahiluoto, Helena"],["dc.contributor.author","Kaseva, Janne"],["dc.contributor.author","Hakala, Kaija"],["dc.contributor.author","Himanen, Sari J."],["dc.contributor.author","Jauhiainen, Lauri"],["dc.contributor.author","Rötter, Reimund Paul"],["dc.contributor.author","Salo, Tapio"],["dc.contributor.author","Trnka, Mirek"],["dc.date.accessioned","2017-09-07T11:48:01Z"],["dc.date.available","2017-09-07T11:48:01Z"],["dc.date.issued","2014"],["dc.description.abstract","Intensified climate and market turbulence requires resilience to a multitude of changes. Diversity reduces the sensitivity to disturbance and fosters the capacity to adapt to various future scenarios. What really matters is diversity of responses. Despite appeals to manage resilience, conceptual developments have not yet yielded a break-through in empirical applications. Here, we present an approach to empirically reveal the ‘response diversity’: the factors of change that are critical to a system are identified, and the response diversity is determined based on the documented component responses to these factors. We illustrate this approach and its added value using an example of securing food supply in the face of climate variability and change. This example demonstrates that quantifying response diversity allows for a new perspective: despite continued increase in cultivar diversity of barley, the diversity in responses to weather declined during the last decade in the regions where most of the barley is grown in Finland. This was due to greater homogeneity in responses among new cultivars than among older ones. Such a decline in the response diversity indicates increased vulnerability and reduced resilience. The assessment serves adaptive management in the face of both ecological and socio-economic drivers. Supplier diversity in the food retail industry in order to secure affordable food in spite of global price volatility could represent another application. The approach is, indeed, applicable to any system for which it is possible to adopt empirical information regarding the response by its components to the critical factors of variability and change. Targeting diversification in response to critical change brings efficiency into diversity. We propose the generic procedure that is demonstrated in this study as a means to efficiently enhance resilience at multiple levels of agrifood systems and beyond."],["dc.identifier.doi","10.1016/j.gloenvcha.2014.02.002"],["dc.identifier.gro","3149441"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6115"],["dc.language.iso","en"],["dc.notes.intern","Roetter Crossref Import"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0959-3780"],["dc.title","Cultivating resilience by empirically revealing response diversity"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","204"],["dc.bibliographiccitation.lastpage","215"],["dc.contributor.author","Rötter, Reimund P."],["dc.contributor.author","Kahiluoto, Helena"],["dc.contributor.author","Webber, Heidi"],["dc.contributor.author","Ewert, Frank"],["dc.contributor.editor","Fuhrer, Jürg"],["dc.contributor.editor","Gasic, Gregory P."],["dc.date.accessioned","2018-05-28T17:02:32Z"],["dc.date.available","2018-05-28T17:02:32Z"],["dc.date.issued","2014"],["dc.identifier.doi","10.1079/9781780642895.0204"],["dc.identifier.uri","http://hdl.handle.net/2/14793"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.publisher","CABI"],["dc.publisher.place","Wallingford, UK"],["dc.relation.doi","10.1079/9781780642895.0000"],["dc.relation.isbn","978-1-78064-289-5"],["dc.relation.ispartof","Climate change impact and adaptation in agricultural systems"],["dc.title","The role of modelling in adapting and building the climate resilience of cropping systems"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","138"],["dc.bibliographiccitation.lastpage","142"],["dc.contributor.author","Rötter, Reimund P."],["dc.contributor.author","Lehtonen, Heikki Sakari"],["dc.contributor.author","Palosuo, Taru"],["dc.contributor.author","Salo, Tapio"],["dc.contributor.author","Helin, Janne Antero"],["dc.contributor.author","Kahiluoto, Helena"],["dc.contributor.author","Aakkula, Jyrki Juhani"],["dc.contributor.author","Granlund, K."],["dc.contributor.author","Rankinen, Katri"],["dc.contributor.author","Carter, Timothy R."],["dc.contributor.editor","Eitzinger, Josef"],["dc.contributor.editor","Kubu, Gerhard"],["dc.date.accessioned","2018-06-13T15:11:19Z"],["dc.date.available","2018-06-13T15:11:19Z"],["dc.date.issued","2010"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15045"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.publisher","Universität für Bodenkultur"],["dc.publisher.place","Vienna"],["dc.relation.conference","Impact of Climate Change and Adaptation in Agriculture International Symposium,"],["dc.relation.eventend","2009-06-23"],["dc.relation.eventlocation","Vienna"],["dc.relation.eventstart","2009-06-22"],["dc.relation.ispartof","Impact of Climate Change and Adaptation in Agriculture International Symposium, Vienna, 22-23 June 2009"],["dc.relation.issn","1994-4179"],["dc.title","A modelling framework for assessing adaptive management options of Finnish agricultural systems to climate change"],["dc.type","conference_paper"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1115"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Environmental Management"],["dc.bibliographiccitation.lastpage","1131"],["dc.bibliographiccitation.volume","52"],["dc.contributor.author","Kassie, Belay Tseganeh"],["dc.contributor.author","Hengsdijk, Huib"],["dc.contributor.author","Rötter, Reimund"],["dc.contributor.author","Kahiluoto, Helena"],["dc.contributor.author","Asseng, Senthold"],["dc.contributor.author","Van Ittersum, Martin"],["dc.date.accessioned","2018-05-19T05:51:51Z"],["dc.date.available","2018-05-19T05:51:51Z"],["dc.date.issued","2013"],["dc.description.abstract","Small-holder farmers in Ethiopia are facing several climate related hazards, in particular highly variable rainfall with severe droughts which can have devastating effects on their livelihoods. Projected changes in climate are expected to aggravate the existing challenges. This study examines farmer perceptions on current climate variability and long-term changes, current adaptive strategies, and potential barriers for successful further adaptation in two case study regions-the Central Rift Valley (CRV) and Kobo Valley. The study was based on a household questionnaire, interviews with key stakeholders, and focus group discussions. The result revealed that about 99 % of the respondents at the CRV and 96 % at the Kobo Valley perceived an increase in temperature and 94 % at CRV and 91 % at the Kobo Valley perceived a decrease in rainfall over the last 20-30 years. Inter-annual and intraseasonal rainfall variability also has increased according to the farmers. The observed climate data (1977-2009) also showed an increasing trend in temperature and high inter-annual and intra-seasonal rainfall variability. In contrast to farmers' perceptions of a decrease in rainfall totals, observed rainfall data showed no statistically significant decline. The interaction among various bio-physical and socio-economic factors, changes in rainfall intensity and reduced water available to crops due to increased hot spells, may have influenced the perception of farmers with respect to rainfall trends. In recent decades, farmers in both the CRV and Kobo have changed farming practices to adapt to perceived climate change and variability, for example, through crop and variety choice, adjustment of cropping calendar, and in situ moisture conservation. These relatively low-cost changes in farm practices were within the limited adaptation capacity of farmers, which may be insufficient to deal with the impacts of future climate change. Anticipated climate change is expected to impose new risks outside the range of current experiences. To enable farmers to adapt to these impacts critical technological, institutional, and market-access constraints need to be removed. Inconsistencies between farmers' perceptions and observed climate trends (e.g., decrease in annual rainfall) could lead to sub-optimal or counterproductive adaptations, and therefore must be removed by better communication and capacity building, for example through Climate Field Schools. Enabling strategies, which are among others targeted at agricultural inputs, credit supply, market access, and strengthening of local knowledge and information services need to become integral part of government policies to assist farmers to adapt to the impacts of current and future climate change."],["dc.identifier.doi","10.1007/s00267-013-0145-2"],["dc.identifier.pmid","23943096"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/14671"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.eissn","1432-1009"],["dc.title","Adapting to climate variability and change: experiences from cereal-based farming in the central rift and Kobo Valleys, Ethiopia"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","44"],["dc.bibliographiccitation.lastpage","44"],["dc.contributor.author","Rötter, Reimund P."],["dc.contributor.author","Rimhanen, Karoliina"],["dc.contributor.author","Kahiluoto, Helena"],["dc.contributor.editor","Tielkes, Eric"],["dc.date.accessioned","2018-06-12T15:46:36Z"],["dc.date.available","2018-06-12T15:46:36Z"],["dc.date.issued","2009"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15040"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.publisher","German Institute for Agriculture in the Tropics and Subtropics"],["dc.publisher.place","Witzenhausen"],["dc.relation.conference","Tropentag 2009. Biophysical and socio-economic frame conditions for the sustainable management of natural resources"],["dc.relation.eventend","2009-10-08"],["dc.relation.eventlocation","Hamburg"],["dc.relation.eventstart","2009-10-06"],["dc.relation.isbn","978-3-9801686-7-0"],["dc.relation.ispartof","Tropentag 2009. International Research on Food Security, Natural Resource Management and Rural Development. Biophysical and socio-economic frame conditions for the sustainable management of natural resources"],["dc.title","Exploring potential of carbon trading to enhance adaptive capacity in terms of food security in sub-Saharan Africa"],["dc.type","conference_paper"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","167"],["dc.bibliographiccitation.lastpage","185"],["dc.contributor.author","Rötter, Reimund P."],["dc.contributor.author","Kahiluoto, Helena"],["dc.contributor.author","Webber, Heidi"],["dc.contributor.author","Ewert, Frank"],["dc.contributor.editor","Fuhrer, Jürg"],["dc.contributor.editor","Gregory, Peter J."],["dc.date.accessioned","2018-05-28T16:53:18Z"],["dc.date.available","2018-05-28T16:53:18Z"],["dc.date.issued","2014"],["dc.identifier.doi","10.1079/9781780642895.0167"],["dc.identifier.uri","http://hdl.handle.net/2/14792"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.publisher","CABI"],["dc.publisher.place","Wallingford, UK"],["dc.relation.doi","10.1079/9781780642895.0000"],["dc.relation.isbn","978-1-78064-289-5"],["dc.relation.ispartof","Climate change impact and adaptation in agricultural systems"],["dc.title","Enhancing climate resilience of cropping systems"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4197"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Ecology and Evolution"],["dc.bibliographiccitation.lastpage","4214"],["dc.bibliographiccitation.volume","3"],["dc.contributor.author","Rötter, Reimund P."],["dc.contributor.author","Höhn, Jukka G."],["dc.contributor.author","Trnka, Mirek"],["dc.contributor.author","Fronzek, Stefan"],["dc.contributor.author","Carter, Timothy R."],["dc.contributor.author","Kahiluoto, Helena"],["dc.date.accessioned","2018-05-19T05:48:15Z"],["dc.date.available","2018-05-19T05:48:15Z"],["dc.date.issued","2013-10"],["dc.description.abstract","(i) to identify at national scale areas where crop yield formation is currently most prone to climate-induced stresses, (ii) to evaluate how the severity of these stresses is likely to develop in time and space, and (iii) to appraise and quantify the performance of two strategies for adapting crop cultivation to a wide range of (uncertain) climate change projections. To this end we made use of extensive climate, crop, and soil data, and of two modelling tools: N-AgriCLIM and the WOFOST crop simulation model. N-AgriCLIM was developed for the automatic generation of indicators describing basic agroclimatic conditions and was applied over the whole of Finland. WOFOST was used to simulate detailed crop responses at four representative locations. N-AgriCLIM calculations have been performed nationally for 3829 grid boxes at a 10 × 10 km resolution and for 32 climate scenarios. Ranges of projected shifts in indicator values for heat, drought and other crop-relevant stresses across the scenarios vary widely - so do the spatial patterns of change. Overall, under reference climate the most risk-prone areas for spring cereals are found in south-west Finland, shifting to south-east Finland towards the end of this century. Conditions for grass are likely to improve. WOFOST simulation results suggest that CO2 fertilization and adjusted sowing combined can lead to small yield increases of current barley cultivars under most climate scenarios on favourable soils, but not under extreme climate scenarios and poor soils. This information can be valuable for appraising alternative adaptation strategies. It facilitates the identification of regions in which climatic changes might be rapid or otherwise notable for crop production, requiring a more detailed evaluation of adaptation measures. The results also suggest that utilizing the diversity of cultivar responses seems beneficial given the high uncertainty in climate change projections."],["dc.identifier.doi","10.1002/ece3.782"],["dc.identifier.pmid","24324870"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/14670"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Modelling shifts in agroclimate and crop cultivar response under climate change"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","95"],["dc.bibliographiccitation.lastpage","105"],["dc.contributor.author","Rötter, Reimund P."],["dc.contributor.author","Sumelius, John"],["dc.contributor.author","Bäckman, S."],["dc.contributor.author","Kahiluoto, Helena"],["dc.contributor.author","Nairo, N."],["dc.contributor.author","Valkila, J."],["dc.contributor.author","Parviainen, T."],["dc.contributor.author","Islam, K. M. Z."],["dc.contributor.author","Hossain, Munir"],["dc.contributor.author","Tenaw, S."],["dc.contributor.author","Inutia, R."],["dc.contributor.editor","Lapka, Miloslav"],["dc.contributor.editor","Cudlínová, Eva"],["dc.date.accessioned","2018-05-30T14:52:09Z"],["dc.date.available","2018-05-30T14:52:09Z"],["dc.date.issued","2012"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/14807"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.publisher","Karolinum Press"],["dc.publisher.place","Prague, Czech Rebulic"],["dc.relation.isbn","978-80-246-2092-3"],["dc.relation.ispartof","Towards an Environmental Society? Concepts, Policies, Outcomes"],["dc.title","Options to promote sustainable agricultural systems and food security in changing climate"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.contributor.author","Bäckman, Stefan"],["dc.contributor.author","Sumelius, John"],["dc.contributor.author","Rötter, Reimund P."],["dc.contributor.author","Kahiluoto, Helena"],["dc.contributor.author","Valkila, Joni"],["dc.contributor.author","Nyairo, Newton"],["dc.contributor.author","Zahidul Islam, K.M."],["dc.contributor.author","Parviainen, Tuulikki"],["dc.contributor.author","Tenaw, Shimelles"],["dc.contributor.author","Hossain, Md. Motaher"],["dc.contributor.author","Ingutia, Rose"],["dc.date.accessioned","2018-06-14T12:20:08Z"],["dc.date.available","2018-06-14T12:20:08Z"],["dc.date.issued","2010"],["dc.description.abstract","A theoretical framework of the link between climate change, rural development, sustainable agriculture, poverty, and food security is presented. Some options to respond to climate change are described. Current knowledge and potential effects on agricultural productivity is discussed. Necessary conditions for successful adaptation includes secured property rights to land, institutions that make market access possible and credit possibilities. The options of mitigation and enhanced adaptive capacity and the requirements for their implementation are discussed."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15047"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.conference","European IFSA Symposium,"],["dc.relation.eventend","2010-07-07"],["dc.relation.eventlocation","Vienna (Austria)"],["dc.relation.eventstart","2010-07-04"],["dc.relation.ispartof","WS3.1 – Climate change: Agriculture, food security and human health"],["dc.title","How can sustainable agricultural systems promote food security in a changing climate?  "],["dc.type","conference_paper"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]