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  1. Artikel: Paper on model responses to selected adverse weather conditions

    Trnka, Miroslav / Rötter, Reimund / Olesen, Jørgen E. / Kersebaum, Kurt Christian

    FACCE MACSUR Reports, 10:C1.2-D

    2017  

    Abstract: Based on the Trnka et al. (2015) study that indicated that heat and drought will be the most important stress factors for most of the European what area the further effort focused on these two extremes. The crop model HERMES has been tested for its ... ...

    Körperschaft Leibniz-Zentrum für Agrarlandschaftsforschung
    Abstract Based on the Trnka et al. (2015) study that indicated that heat and drought will be the most important stress factors for most of the European what area the further effort focused on these two extremes. The crop model HERMES has been tested for its ability to replicate correctly drought stress, heat stress and combination of both stresses. While data on the drought stress were available for both field and growth chambers, heat stress and its combination with heat stress was available only for the growth chambers. The modified version of the HERMES crop model was developed by Dr. Kersebaum and is being currently prepared for the journal paper publication.
    Schlagwörter Climate Change ; Agriculture ; Food Security ; Joint Programming Initiative ; crop modelling
    Sprache Englisch
    Dokumenttyp Artikel
    DOI 10.4126/FRL01-006413058
    Datenquelle Fachrepositorium Lebenswissenschaften

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  2. Artikel: Description of the compiled experimental data available in the MACSUR CropM database

    Trnka, Miroslav / Kersebaum, Kurt Christian / Olesen, Jørgen E.

    FACCE MACSUR Reports, 6:D-C2.1

    2015  

    Abstract: The input data necessary for crop model simulations and data for their calibration/validation (and thus requirements for observations and measurements in suitable experiments) have been collected through out the project together with data for additional ... ...

    Körperschaft Leibniz-Zentrum für Agrarlandschaftsforschung
    Abstract The input data necessary for crop model simulations and data for their calibration/validation (and thus requirements for observations and measurements in suitable experiments) have been collected through out the project together with data for additional analysis of abiotic factors influencing yields. A list of possible dataset was collated in the first year of project however very few of the existing datasets were found usable for the crop model simulation as they fell short of the requirements defined in the part 2.3. However database has been populated as planned with the results of the ongoing MACSUR studies and will serve in the same way for the MACSUR 2 duration.
    Sprache Englisch
    Dokumenttyp Artikel
    DOI 10.4126/FRL01-006413377
    Datenquelle Fachrepositorium Lebenswissenschaften

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  3. Artikel: Inter-comparison of statistical models for projecting winter oilseed rape yield in Europe under climate change

    Kersebaum, Kurt Christian / Trnka, Miroslav / Olesen, Jørgen E.

    FACCE MACSUR Reports, 5:SP5-61

    2015  

    Abstract: While intercomparison of process-based crop models for projections under climate change is being intensively studied at European as well as at the global scale, little effort has been made for comparing statistical models. In this study, several ... ...

    Körperschaft Leibniz-Zentrum für Agrarlandschaftsforschung
    Abstract While intercomparison of process-based crop models for projections under climate change is being intensively studied at European as well as at the global scale, little effort has been made for comparing statistical models. In this study, several regression techniques (ordinary least squares, stepwise, shrinkage methods, principle components and partial least squares) were combined with different types of climate input variables (with different temporal resolution) in order to define a large range of statistical models. Each model was fitted to winter oilseed rape data collected in 689, 325 and 173 field experiments carried out in Denmark, Germany, and Czech Republic, respectively. The fitted models were then used to predict yield of winter oilseed rape in the field experiments during more than 20 years, up to 2013. Interpretability of the estimated climate variable effects and accuracy of yield predictions were both analysed. Results suggest that recent statistical methods (e.g., shrinkage methods) may have considerable capabilities to complement traditional statistical methods in yield prediction. The selection of the most influential variables was strongly influenced by the statistical method used to analyse the data. Among the most recent statistical methods, the uncertainties in projecting yield of winter oilseed rape under climate change were mainly due to residual errors and uncertainty in estimated parameter values, and not to model choice.
    Sprache Englisch
    Dokumenttyp Artikel
    DOI 10.4126/FRL01-006413718
    Datenquelle Fachrepositorium Lebenswissenschaften

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  4. Artikel ; Online: Sustainable cultivation of the white truffle (Tuber magnatum) requires ecological understanding.

    Čejka, Tomáš / Trnka, Miroslav / Büntgen, Ulf

    Mycorrhiza

    2023  Band 33, Heft 5-6, Seite(n) 291–302

    Abstract: The white truffle (Tuber magnatum Picco.; WT) is the most expensive and arguably also the most delicious species within the genus Tuber. Due to its hidden belowground life cycle, complex host symbiosis, and yet unknown distribution, cultivation of the ... ...

    Abstract The white truffle (Tuber magnatum Picco.; WT) is the most expensive and arguably also the most delicious species within the genus Tuber. Due to its hidden belowground life cycle, complex host symbiosis, and yet unknown distribution, cultivation of the enigmatic species has only recently been achieved at some plantations in France. A sustainable production of WTs under future climate change, however, requires a better ecological understanding of the species' natural occurrence. Here, we combine information from truffle hunters with a literature review to assess the climatic, edaphic, geographic, and symbiotic characteristics of 231 reported WT sites in southeast Europe. Our meta-study shows that 75% of the WT sites are located outside the species' most famous harvest region, the Piedmont in northern Italy. Spanning a wide geographic range from ~ 37° N in Sicily to ~ 47° N in Hungary, and elevations between sea level in the north and 1000 m asl in the south, all WT sites are characterised by mean winter temperatures > 0.4 °C and summer precipitation totals of ~ 50 mm. Often formed during past flood or landslide events, current soil conditions of the WT sites exhibit pH levels between 6.4 and 8.7, high macroporosity, and a cation exchange capacity of ~ 17 meq/100 g. At least 26 potential host species from 12 genera were reported at the WT sites, with Populus alba and Quercus cerris accounting for 23.5% of all plant species. We expect our findings to contribute to a sustainable WT industry under changing environmental and economic conditions.
    Mesh-Begriff(e) Mycorrhizae ; Symbiosis ; Ascomycota ; Soil
    Chemische Substanzen Soil
    Sprache Englisch
    Erscheinungsdatum 2023-07-18
    Erscheinungsland Germany
    Dokumenttyp Journal Article ; Review
    ZDB-ID 1087945-6
    ISSN 1432-1890 ; 0940-6360
    ISSN (online) 1432-1890
    ISSN 0940-6360
    DOI 10.1007/s00572-023-01120-w
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel ; Online: Landscape Change Scenarios: Developing Participatory Tools for Enhancing Resilience to Climate Change.

    Zandlová, Markéta / Skokanová, Hana / Trnka, Miroslav

    Environmental management

    2023  Band 72, Heft 3, Seite(n) 631–656

    Abstract: The impacts of climate change on people and ecosystems have been studied at both local and global levels. The environment is expected to change significantly, and the role of local communities in shaping more resilient landscapes is considered crucial. ... ...

    Abstract The impacts of climate change on people and ecosystems have been studied at both local and global levels. The environment is expected to change significantly, and the role of local communities in shaping more resilient landscapes is considered crucial. This research focuses on rural regions highly susceptible to climate change impacts. The objective was to enhance conditions for climate resilient development on a microlocal level by encouraging diverse stakeholders to participate in developing sustainable landscape management. This paper introduces a novel interdisciplinary mixed-method approach to landscape scenario development, combining research-driven and participatory approaches and integrating quantitative methods with qualitative ethnographic inquiry. Two scenarios for 2050 were built: a research-driven, business-as-usual scenario accounting for mandatory adaptation policies and an optimistic scenario combining research-driven and participatory approaches, including additional feasible community-based measures. While the differences between the projected land use seem to be relatively subtle, the optimistic scenario would in fact lead to a considerably more resilient landscape. The results highlight the role of interdisciplinarity and ethnography in gaining good local knowledge and building an atmosphere of trust. These factors supported the research credibility, strengthened the legitimacy of the intervention in local affairs, and contributed to the active participation of the stakeholders. We argue that despite its time, intense effort and limited direct policy impact, the mixed-method approach is highly suitable for the microlocal level. It encourages citizens to think about how their environment is threatened by climate change impacts and increases their willingness to contribute to climate resilience.
    Mesh-Begriff(e) Humans ; Ecosystem ; Climate Change
    Sprache Englisch
    Erscheinungsdatum 2023-06-08
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 1478932-2
    ISSN 1432-1009 ; 0364-152X
    ISSN (online) 1432-1009
    ISSN 0364-152X
    DOI 10.1007/s00267-023-01840-x
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel: Yield gaps of cereals across Europe

    Schils, René / Kersebaum, Kurt Christian / Trnka, Miroslav / Palosuo, Taru / Fodor, Nándor / Gobin, Anne / Roggero, Pier Paolo

    FACCE MACSUR Reports, 10:XC9.1-D1

    2017  

    Abstract: The increasing global demand for food requires a sustainable intensification of crop production in low-yielding areas. Actions to improve crop production in these regions call for accurate spatially explicit identification of yield gaps, i.e. the ... ...

    Körperschaft Leibniz-Zentrum für Agrarlandschaftsforschung
    Abstract The increasing global demand for food requires a sustainable intensification of crop production in low-yielding areas. Actions to improve crop production in these regions call for accurate spatially explicit identification of yield gaps, i.e. the difference between potential or water-limited yield and actual yield. The Global Yield Gap Atlas (GYGA) project proposes a consistent bottom-up approach to estimate yield gaps. For each country, a climate zonation is overlaid with a crop area map. Within climate zones with important crop areas, weather stations are selected with at least 10 years of daily data. For each of the 3 dominant soil types within a 100 km zone around the weather stations, the potential and water-limited yields are simulated with the WOFOST crop model, using location-specific knowledge on crop systems. Data from variety trials or other experiments, approaching potential or water-limited yields, are used for validation and calibration of the model. Actual yields are taken from sub-national statistics. Yields and yield gaps are scaled up to climate zones and subsequently to countries. The average national simulated wheat yields under rainfed conditions varied from around 5 to 6 t/ha/year in the Mediterranean to nearly 12 t/ha/year on the British Isles and in the Low Countries. The average actual wheat yield varied from around 2 to 3 t/ha/year in the Mediterranean and some countries in East Europe to nearly 9 t/ha/year on the British Isles and in the Low Countries. The average relative yield gaps varied from around 10% to 30% in many countries in Northwest Europe to around 50% to 70% in some countries in the Mediterranean and East Europe. The paper will elaborate on results per climate zone and soil type, and will also include barley and maize. Furthermore we will relate yield gaps to nitrogen use.
    Sprache Englisch
    Dokumenttyp Artikel
    DOI 10.4126/FRL01-006413049
    Datenquelle Fachrepositorium Lebenswissenschaften

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  7. Artikel: Online maps of Yield Gaps of cereals across Europe: Modelling European Agriculture with Climate Change for Food Security (MACSUR)2017 Scientific Conference, 22-24 May, 2017 in Berlin

    Schils, René / Kersebaum, Kurt Christian / Trnka, Miroslav / Palosuo, Taru / Fodor, Nándor / Gobin, Anne / Roggero, Pier Paolo

    FACCE MACSUR Reports, 10:XC9.1-D2

    2017  

    Abstract: The yield gap and water productivity analysis of key cereal crops in Europe is completed and results are available through www.yieldgap ... ...

    Körperschaft Leibniz-Zentrum für Agrarlandschaftsforschung
    Abstract The yield gap and water productivity analysis of key cereal crops in Europe is completed and results are available through www.yieldgap.org
    Schlagwörter Climate Change ; Agriculture ; Food Security ; Joint Programming Initiative ; crop modelling
    Sprache Englisch
    Dokumenttyp Artikel
    DOI 10.4126/FRL01-006413459
    Datenquelle Fachrepositorium Lebenswissenschaften

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  8. Artikel: Evaluating Recent and Future Climatic Suitability for the Cultivation of Norway Spruce in the Czech Republic in Comparison with Observed Tree Cover Loss between 2001 and 2020

    Čermák, Petr / Mikita, Tomáš / Kadavý, Jan / Trnka, Miroslav

    Forests. 2021 Dec. 02, v. 12, no. 12

    2021  

    Abstract: The high portion of secondary Norway spruce in Central European forests constitutes a major problem because a significant part of these forests is moving further away from their original bioclimatic envelope. The precise evaluation and prediction of ... ...

    Abstract The high portion of secondary Norway spruce in Central European forests constitutes a major problem because a significant part of these forests is moving further away from their original bioclimatic envelope. The precise evaluation and prediction of climatic suitability are needed for the implementation of forest adaptation strategies. We evaluated climatic suitability for the cultivation of Norway spruce in the Czech Republic forests, making use of the Random Forest combined learning statistical method. The evaluation presented was based on a comparison with the climatic normal period 1961–1990; change analysis was carried out for the period 1991–2014 and projected for 2021–2040 and 2041–2060. We found that suitable conditions for Norway spruce will remain only in 11.3% by area of Czech forests in the period 2041–2060 vs. 46.0% in the period 1961–1990. We also compared tree cover loss data (using Global Forest Watch) from 2001 to 2020 with statistics on salvage logging. In the period, the cover loss affected 19.5% of the area with more than 30% Norway spruce. The relationships between relative tree cover loss and the percentage of salvage logging caused by insects were conclusive and statistically significant.
    Schlagwörter Picea abies ; forests ; prediction ; statistics ; trees ; Czech Republic
    Sprache Englisch
    Erscheinungsverlauf 2021-1202
    Erscheinungsort Multidisciplinary Digital Publishing Institute
    Dokumenttyp Artikel
    ZDB-ID 2527081-3
    ISSN 1999-4907
    ISSN 1999-4907
    DOI 10.3390/f12121687
    Datenquelle NAL Katalog (AGRICOLA)

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  9. Artikel: Climate change driven changes of vegetation fires in the Czech Republic

    Mozny, Martin / Trnka, Miroslav / Brázdil, Rudolf

    Theoretical and applied climatology. 2021 Jan., v. 143, no. 1-2

    2021  

    Abstract: With rising temperatures and decreasing soil water, the frequency of vegetation fires is increasing globally. We analyzed the impact of climate change on the frequency of vegetation fires that required intervention by the Czech Fire Rescue Service in the ...

    Abstract With rising temperatures and decreasing soil water, the frequency of vegetation fires is increasing globally. We analyzed the impact of climate change on the frequency of vegetation fires that required intervention by the Czech Fire Rescue Service in the Czech Republic between 1971 and 2015. We analyzed spatial patterns across administrative regions and evaluated the role of climate and other contributing factors that could explain spatiotemporal shifts during the study period. Our study has shown that the frequency of vegetation fires has increased most in the warmest and driest areas of the Czech Republic countryside. The increase between 1991 and 2015 is about 70% in comparison with the 1971–1990 period. In all administrative regions, a statistically significant relationship of the frequency of vegetation fires and weather conditions has been demonstrated. In all regions of the study area, extreme occurrences of vegetation fires were due to a combination of drought and heat waves. We conclude that population growth at the wildland-urban interface causes a greater frequency of vegetation fires. However, the main reason for the statistically significant increase in the frequency of vegetation fires is the ongoing climate change, manifested by an increase in values of the Fire Danger Index and heat wave occurrence.
    Schlagwörter climate ; climate change ; climatology ; drought ; fire hazard ; heat ; population growth ; soil water ; vegetation ; wildland-urban interface ; Czech Republic
    Sprache Englisch
    Erscheinungsverlauf 2021-01
    Umfang p. 691-699.
    Erscheinungsort Springer Vienna
    Dokumenttyp Artikel
    Anmerkung NAL-AP-2-clean
    ZDB-ID 1463177-5
    ISSN 1434-4483 ; 0177-798X
    ISSN (online) 1434-4483
    ISSN 0177-798X
    DOI 10.1007/s00704-020-03443-6
    Datenquelle NAL Katalog (AGRICOLA)

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  10. Artikel ; Online: The importance of historical maps for man-made pond research

    Frajer Jindřich / Kremlová Jana / Fiedor David / Pavelková Renata / Trnka Miroslav

    Moravian Geographical Reports, Vol 29, Iss 3, Pp 184-

    From the past extent of ponds to issues of the present landscape. A case study from the Czech Republic

    2021  Band 201

    Abstract: Historical maps are a valuable resource in landscape research. The information gathered from them facilitates the cognisance of landscapes and may assist current landscape planning. This study focuses on the historical occurrence and spatial extent of ... ...

    Abstract Historical maps are a valuable resource in landscape research. The information gathered from them facilitates the cognisance of landscapes and may assist current landscape planning. This study focuses on the historical occurrence and spatial extent of man-made ponds in the Czech Republic. Based on the 1st Military Survey maps (1764–1783) of the Habsburg Monarchy, we use Historical GIS to identify 7,676 man-made ponds in the historical landscape. Compared to the 2nd Military Survey maps (1836–1852), 56% of these man-made ponds had been drained. Such disappearances mostly affected large ponds in fertile agricultural areas, but also affected small reservoirs in less fertile areas at higher altitudes. As the current maps and spatial datasets (Water reservoirs, Landscape water regime, Farming areas) show, a number of these agricultural regions have been affected by climate changes and face water shortages. The historical map information of former ponds has the potential to contribute to their restoration in areas where water retention in the landscape needs to be increased.
    Schlagwörter ponds ; water regime ; historical gis ; historical maps ; czech republic ; Geography (General) ; G1-922
    Thema/Rubrik (Code) 710
    Sprache Englisch
    Erscheinungsdatum 2021-09-01T00:00:00Z
    Verlag Sciendo
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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