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| Registros recuperados: 13 | |
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| Siebrecht, Norman; Kainz, Maximilian; Hülsbergen, Kurt-Jürgen. |
| Dem ökologischen Landbau werden im Vergleich zu konventionellen Systemen häufig geringere Umweltbelastungen zugesprochen. Ein bedeutender Aspekt sind Wirkungen auf Böden und deren Eigenschaften: Untersuchungen belegen höhere Gehalte organischer Substanz, eine verbesserte Struktur und ein vielfältigeres Bodenleben. Auch Hinweise zu reduzierten Bodenabträgen bestehen. Analysen zum Ausmaß der Wirkungen und den Prozessen sind jedoch kaum verfügbar. Bei der Modellierung von Bodenabträgen und der Ableitung von Maßnahmen sind entsprechende Informationen unabdingbar. Auf Basis umfangreicher Recherche wurden im Projekt Ursachen-Wirkungs-Beziehungen zwischen ökologischer Bewirtschaftungsweise und Bodenerosion erarbeitet. Es zeigt sich, dass die Wirkungen nicht auf... |
| Tipo: Report |
Palavras-chave: Crop husbandry; Soil. |
| Ano: 2009 |
URL: http://orgprints.org/18812/1/18812-06OE256-wzw_tum-kainz-2009-bodenerosion.pdf |
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| Wolfrum, Sebastian; Siebrecht, Norman; Kainz, Maximilian. |
| Das EU-Forschungsprojekt BioBio schließt eine Lücke in der Verfügbarkeit wissenschaftlich fundierter, praktisch relevanter und international anwendbarer Biodiversitätsindikatoren für den Ökolandbau und andere extensive Landnutzungssysteme. Ziel des Projektes war es, ein breit anwendbares Indikatorensystem und standardisierte Methoden für die Beurteilung des Nutzens von ökologischer und extensiver Landwirtschaft für die Biodiversität auf landwirtschaftlich genutzten Flächen zur Verfügung zu stellen. Dazu wurden Indikatoren zusammengestellt, bewertet und standardisierte Analysemethoden definiert. 2010 wurden aus einer Vorauswahl 48 vielversprechendsten Indikatoren europaweit in 12 Fallstudien getestet. Von diesem Gesamtset der Indikatoren werden abschließend... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2012 |
URL: http://orgprints.org/20983/1/Wolfrum%2Det%2Dal_2012_BioBio.pdf |
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| Siebrecht, Norman; Hülsbergen, Prof. Dr. Kurt-Jürgen. |
| Organic farming depends on the promotion of biodiversity and the corresponding functions. Almost no tools are known for the purpose of farm-specific information explaining the influence of farm management on biodiversity. The paper describes a pressure indicator oriented approach that allows estimating such effects. It has been applied in 2 organic and 2 conventional farms where results were discussed. The investigations made so far allow concluding that multiple-structured low-input systems achieve better marks than specialized high-input systems. For further development and validation additional studies are required. It is planned to test the indicator model in numerous farms, in order to disclose bottlenecks and deficiencies. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2009 |
URL: http://orgprints.org/14031/1/Siebrecht_14031.pdf |
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| Reents, Hans- Jürgen; Müller, Christoph; Siebrecht, Norman; Kainz, Max; Brandhuber, Robert. |
| Zusammenfassung In der Diskussion um die Umweltwirkungen des Ökologischen Landbaus wird davon aus-gegangen, dass die Bodenerosion durch längere Bodenbedeckung sowie durch bessere Aggregierung der Böden durch Wurzeln und organische Düngung verringert wird. In ei-nem Dauerversuch, der auf die Wirkungen des Leguminosen-Managements in verschiede-nen Fruchtfolgen ausgerichtet ist, wurde die Aggregatstabilität in der obersten Boden-schicht (0-5cm) untersucht und mit anderen Bodeneigenschaften sowie Indikatoren der Kohlenstoffbilanzierung korreliert. Es wurden deutliche Differenzen in der Aggregatstabi-lität zwischen den verschiedenen Fruchtfolgen gefunden. Der bodenwirksame Kohlenstoff aus dem frischen, eingearbeiteten Pflanzenmaterial (Wurzeln, Stoppelreste,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Soil. |
| Ano: 2009 |
URL: http://orgprints.org/16272/1/Reents%2Det%2Dal_2009_Leguminosen_Management.pdf |
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| Wolfrum, Sebastian; Berninger, Eva; Göcen, Deniz; Huber, Julia; Obermaier, Sabine; Schmid, Harald; Siebrecht, Norman; Hülsbergen, Kurt-Jürgen. |
| Bat activity in agroforestry systems at the research station Scheyern was analyzed using a N-mixture model approach. Results show low bat activity but provide hints that agroforestry structures can increase bat activity in open agricultural habitats. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Surveys and statistics; Biodiversity and ecosystem services. |
| Ano: 2013 |
URL: http://orgprints.org/21633/1/21633_Wolfrum.pdf |
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| Wolfrum, Sebastian; Siebrecht, Norman; Papaja-Hülsbergen, Susanne; Lüscher, Gisela; Jeanneret, Philippe; Arndorfer, Michaela; Friedel, Jürgen K.; Paoletti, Mauricio G.; Kainz, Maximilian; Hülsbergen, Kurt-Jürgen; Herzog, Felix. |
| Information on biodiversity and related population parameters are of key importance for assessing ecosystem services or impacts of management decisions in agriculture. However information on this parameters is often not directly measurable. Indicators are a convenient way to gain information on these variables. Here we present Partial Least Squares Path Modeling (PLS-PM) to develop and evaluate complex indicators for biodiversity and related parameters. As an example we use data on Lumbricus terrestris from 76 plots on Bavarian mixed farms to create complex indicators for population viability, management intensity and site potential and model their causal relations. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Surveys and statistics; Indicators and other value-laden measures; Soil biology; Biodiversity and ecosystem services. |
| Ano: 2013 |
URL: http://orgprints.org/21596/1/21596_wolfrum.pdf |
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| Kainz, Max; Siebrecht, Norman; Reents, Dr. Hans Jürgen. |
| Soil erosion is often calculated by models. Those are up to now not reflecting the specific conditions of Organic Agriculture (OA). The aggregate-stabilizing effect of grass-clover ley, which is a crucial crop for OA, is considered much greater than implemented in the models. Other factors not included in models include, the effects of organic instead of mineral fertilizers, the non-use of pesticides and soil cover by specific crops and weeds. This paper gives a first overview about the modifying effects of organic farming on soil erosion. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil; Soil quality. |
| Ano: 2009 |
URL: http://orgprints.org/14385/1/Kainz_14385.pdf |
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| Schneider, Manuel; Lüscher, Gisela; Jeanneret, Philippe; Arndorfer, Michaela; Bailey, Debra; Balacs, Katalin; Choisis, Jean-Pierre; Dennis, Peter; Fjellstad, Wendy; Fraser, M.; Frank, Thomas; Friedel, Jürgen K.; Gillingham, Pippa; Jerkovich, G.; Gomiero, Tiziano; Jongman, Rob; Kainz, Max; Moreno, Gerardo; Oschatz, M.-L.; Paoletti, Maurizio; Pointereau, Philippe; Sarthou, Jean-Pierre; Siebrecht, Norman; Sommaggio, D.; Vale, Jim; Wolfrum, Sebastian; Herzog, Felix. |
| One of the aims of organic farming is the protection of biodiversity. In the EU FP7 project BioBio, we studied the effect of organic farming on species numbers at farm level on 169 randomly selected organic and non-organic farms with mostly low to medium intensity in ten European regions. Using a preferential sampling scheme based on habitat mapping, numbers of plants, earthworms, spiders and bees were assessed at farm level. A global analysis across the ten regions shows that organic farms have significantly higher numbers of plant and bee species than non-organic farms. The effect of organic farming on earthworm and spider species numbers are also positive but insignificant. The effects in absolute terms are small and much smaller than the variation... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Biodiversity and ecosystem services. |
| Ano: 2013 |
URL: http://orgprints.org/21413/1/21413_Schneider.pdf |
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| Siebrecht, Norman; Kainz, Max. |
| For the assessment of soil erosion many models have been developed. Most of these don’t consider specific effects of organic agriculture (OA). That might result in wrong calculations of soil losses. This paper describes how the widespread model ABAG could be adopted to OA. But some effects can not be included easily. This seems to be possible when using the model RUSLE2, which is compatible to ABAG. But at least the carry-over effect of leys and the influence of pesticides need further research. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil; Soil quality. |
| Ano: 2009 |
URL: http://orgprints.org/14386/1/Siebrecht_14386.pdf |
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| Registros recuperados: 13 | |
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