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Grössere Biomassen und aktivere mikrobielle Gemeinschaften in Böden unter biologischer Bewirtschaftung eine globale Meta-Analyse

Lori, M.; Symanczik, Sarah; Mäder, Paul and Gattinger, Andreas (2017) Grössere Biomassen und aktivere mikrobielle Gemeinschaften in Böden unter biologischer Bewirtschaftung eine globale Meta-Analyse. Paper at: 14. Wissenschaftstagung Ökologischer Landbau, 07.-10. März 2017.

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Summary

Population growth, climate change and other impacts challenge our food and farming system and provide arguments for further intensification in agriculture. One option is
eco-functional intensification through organic farming, an approach based on exploiting internal natural resources and processes for securing and improving agricultural productivity whilst minimizing negative environmental impacts. In this concept an active soil microbiota plays a crucial role. Thus, we conducted a literature
search followed by meta-analysis to quantify possible differences in key indicators for soil microbial abundance and activity in organic and conventional farming systems.
We integrated data from 57 studies including 148 pairwise comparisons and found significant differences for almost all investigated effect sizes. Microbial biomass
carbon and nitrogen, total phospholipid fatty acids, basal respiration, dehydrogenase, urease and protease activity were increased up to 84% in organic systems. The
metabolic quotient remained unaffected with regard to the overall effect. Summarizing, this study shows that long-term organic farming enhances microbial abundance and
activities in agricultural soils.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:meta-analysis, organic farming, microbial community, microbial activity
Subjects: Soil > Soil quality > Soil biology
Soil > Nutrient turnover
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland
International Conferences > 2017: Scientific Conference German Speaking Countries > Soil fertility
ISBN:978-3-89574-925-4
Deposited By: Hasreiter, Anna
ID Code:31956
Deposited On:04 Jul 2017 17:18
Last Modified:04 Jul 2017 17:18
Document Language:German/Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 14. Wissenschaftstagung erschienen.
S. Wolfrum, H. Heuwinkel, H.J. Reents, u.a. (Hrsg.) (2017): Ökologischen Landbau weiterdenken - Verantwortung übernehmen - Vertrauen stärken. Beiträge der 14. Wissenschaftstagung Ökologischer Landbau, Freising-Weihenstephan, 7.-10. März 2017
Verlag Dr. Köster, Berlin

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