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Anecic, endogeic, epigeic or all three - acknowledging the compositional nature of earthworm ecological group data in biodiversity analysis Organic Eprints
Wolfrum, Sebastian; Siebrecht, Norman; Papaja-Hülsbergen, Susanne; Kainz, Maximilian; Hülsbergen, Kurt-Jürgen.
Agriculture and biodiversity are closely connected. Especially the soil ecosystem is crucial in this relation. Earthworms are seen as good indicators for the health and functioning of the soil. Beneath different biodiversity measurese earthworm ecological group data is analysed to assess soil biodiversity, fertility and capability to deliver ecosystem services. However this kind of data is compositional and needs a special statistical treatment. New available methods for this purpose were applied to data from the BIOBIO project (www.biobio-indicator.org) to gain better understanding of the complex relationship between earthworms, agricultural management and environment.
Tipo: Conference paper, poster, etc. Palavras-chave: Surveys and statistics; Soil biology; Biodiversity and ecosystem services.
Ano: 2014 URL: http://orgprints.org/24106/1/24106%20SW%20Paper%20OWC14%20A4_revised_MM.pdf
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Indikatoren für die Vitalität von Lumbricus terrestris Populationen – Eine Anwendung von Partial Least Squares Pfadmodellen (PLS-PM) zur Analyse komplexer Zusammenhänge Organic Eprints
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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Regenwurmpopulation in ökologisch und integriert bewirtschafteten Agroforstsystemen Organic Eprints
Huber, Julia; Papaja-Hülsbergen, Susanne; Wolfrum, Sebastian; Schmid, Harald; Hülsbergen, Kurt-Jürgen.
Agroforestry systems provide numerous environmental services. One of the advantages is the increase of biodiversity. Earthworms play a major role in soil fertility and have a key function in ecosystems. Abundance, biomass and the amount of species was measured to quantify the influences of trees on the earthworm population in integrated and organic farming systems. Results showed that in poplar stands the amount of earthworms, especially juvenile, was higher than in winter wheat or lucerne-clover-grass fields. Furthermore the organic farming system had higher earthworm abundance and species richness than the integrated farming system. Regarding tree species poplar had fewer earthworms in total and fewer epigeic species.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil biology; Biodiversity and ecosystem services.
Ano: 2013 URL: http://orgprints.org/21659/1/21659_huber.pdf
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Regenwurmvorkommen auf konventionellen und ökologisch bewirtschafteten Ackerbaubetrieben im Marchfeld, Ostösterreich Organic Eprints
Friedel, Jürgen K.; Heiner, Barbara; Frank, Thomas; Papaja-Hülsbergen, Susanne; Arndorfer, Michaela.
Auf acht konventionell und acht ökologisch wirtschaftenden Ackerbaubetrieben im Marchfeld / Niederösterreich wurden im Frühjahr 2010 in allen festgestellten Habitattypen Regenwürmer erhoben. Es wurden v.a. endogäische Arten (Aporrectodea rosea, Aporrectodea caliginosa, Allolobophora chlorotica) gefunden. Weder das Bewirtschaftungssystem noch die Art der Bodenbearbeitung hatten einen Einfluss auf die Regenwurmabundanz. Anözische Regenwürmer wurden überwiegend auf naturnahen Habitaten gefunden. Ihre Abundanz könnte durch eine Erhöhung des Anteils dieser Habitattypen auf den Betrieben gefördert werden.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality; Soil tillage; Biodiversity and ecosystem services.
Ano: 2019 URL: http://orgprints.org/36156/1/Beitrag_229_final_a.pdf
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