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1	The Effects of Mycorrhizae and Soil Biota Feedback on the Outcome of Plant Competition Stanescu, Sabina 05 September 2012 (has links) The difference in the ability of plants to obtain resources has been used to predict the competition outcomes. Competitive interactions between plants can be influenced by trophic interactions. If mycorrhizae increase the growth of inferior competitors, then it can prevent competitive exclusion. I examined the effect of mycorrhizae on competitive interactions and found that inferior competitors had slow growth in the absence of mycorrhizae, but greater growth with mycorrhizae. By providing greater growth responses to inferior versus superior competitors, mycorrhizae promoted coexistence. In a separate experiment, I looked at the effects of whole soil biota on competitive ability. Coexistence can occur if dominant competitors experience negative feedback and or if inferior competitors experience positive feedback. I examined Plantago lanceolata L. specific feedback effects on competitive ability of 21 co-occurring species. I found that feedback effects did not affect hierarchies, and that positive feedback did not improve species competitive ability. / NSERC (Natural Science and Engineering Research Council), University of Guelph, Queen Elizabeth II Graduate Scholarship for Science and Technology mycorrhizae plant competition plant-soil feedback hierarchies coexistence mutualists symbiosis pathogens soil community resource uptake phytometer
2	Towards a unified allometric and stoichiometric perspective in ecology / Soil communities and decomposition in focus of the metabolic theory and the ecological stoichiometry Ott, David 07 September 2014 (has links) No description available. 570 decomposition stoichiometry soil community soil fauna soil invertebrates metabolic theory ecological stoichiometry allometry population ecology Biologie (PPN619462639)
3	Metagenomanalyse eines hydrolytischen Konsortiums: Identifizierung und biochemische Charakterisierung von Polysaccharid-abbauenden Biokatalysatoren aus nicht kultivierten Mikroorganismen / Metagenomic analysis of a hydrolytic community: Identification and biochemically characterisation of polysaccharide degrading biocatalysts from non-cultured microorganisms Voget, Sonja 17 January 2006 (has links) No description available. 570 Biowissenschaften, Biologie Mathematics and Computer Science Metagenomik Konsortium Genbanken Screening Cellulase halotolerant Metagenomic soil community screening cellulase halotolerant ph profile 42.30 42.13 WUZ 000: Systematische Mikrobiologie

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The Effects of Mycorrhizae and Soil Biota Feedback on the Outcome of Plant Competition

Towards a unified allometric and stoichiometric perspective in ecology / Soil communities and decomposition in focus of the metabolic theory and the ecological stoichiometry