Prof. Dr. Liliane Rueß
Profil
Forschungsthemen12
Aufbereitung wissenschaftlicher Daten über Verbreitung und Ökologie von Nematoden
Quelle ↗Zeitraum: 11/2011 - 08/2012 Projektleitung: Prof. Dr. Liliane Rueß
Auswirkungen von wurzel- und pilzfressenden Bodentieren auf Interaktionen in der Rhizosphäre und die Fitness von Eichen
Quelle ↗Förderer: DFG Sachbeihilfe Zeitraum: 05/2010 - 09/2014 Projektleitung: Prof. Dr. Liliane Rueß
Das Hyphennetzwerk arbuskulärer Mykorrhizapilze im Boden: Ein potentieller Schlüssel zum besseren Verständnis von Ökosystemen und zum Management gartenbaulich genutzter Böden
Quelle ↗Zeitraum: 04/2009 - 06/2010 Projektleitung: Prof. Dr. Liliane Rueß
DFG Trilaterale Kollaboration Deutschland-Israel-Palästina: Nematoden als potentielle Vektoren für Humanpathogene
Quelle ↗Förderer: DFG Sachbeihilfe Zeitraum: 04/2010 - 03/2014 Projektleitung: Prof. Dr. Liliane Rueß
FG 918/2: „Carbon Flow in Belowground Food Webs Assessed by Isotope Tracers“ – Coordination
Quelle ↗Förderer: DFG Forschungsgruppe Zeitraum: 05/2012 - 06/2016 Projektleitung: Prof. Dr. Liliane Rueß
Freilebende Nematoden als Vektoren und Reservoirs für Legionella pneumophila
Quelle ↗Förderer: DFG Sachbeihilfe Zeitraum: 10/2020 - 09/2023 Projektleitung: Prof. Dr. Liliane Rueß
Internationale Wissenschaftliche Tagung "Microbial-faunal interactions shaping soil processes" (Veranstaltung: 05.-07.10.2010, Berlin)
Quelle ↗Förderer: DFG sonstige Programme Zeitraum: 09/2011 - 11/2011 Projektleitung: Prof. Dr. Liliane Rueß
Kohlenstofffluss durch das tierische Nahrungsnetz des Bodens
Quelle ↗Förderer: DFG Sachbeihilfe Zeitraum: 04/2009 - 11/2013 Projektleitung: Prof. Dr. Liliane Rueß
Links und Flüsse im Bodennahrungsnetz von Wäldern mit unterschiedlicher Landnutzung
Quelle ↗Förderer: DFG Sachbeihilfe Zeitraum: 01/2015 - 12/2019 Projektleitung: Prof. Dr. Liliane Rueß
N2O-Emissionen als Reaktion der mikrobiellen Aktivität auf verschiedene Bewässerungs- und Stickstoffdüngungsstrategien im Kartoffelbau
Quelle ↗Förderer: DFG Sachbeihilfe Zeitraum: 04/2019 - 12/2022 Projektleitung: Prof. Dr. Liliane Rueß
Nematoden als wichtige Quelle langkettiger Omega-3-Fettsäuren in Bodennahrungsnetzen und ihre Bedeutung für die Ernährung höherer trophischer Level
Quelle ↗Förderer: DFG Sachbeihilfe Zeitraum: 03/2016 - 02/2019 Projektleitung: Prof. Dr. Liliane Rueß
Quantitative Fettsäuresignaturanalyse: ein neues Werkzeug zur Bestimmung trophischer Interaktionen in Bodennahrungsnetzen
Quelle ↗Förderer: DFG Sachbeihilfe Zeitraum: 05/2017 - 07/2021 Projektleitung: Prof. Dr. Liliane Rueß
Mögliche Industrie-Partner10
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Rothamsted Research
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- Integrated Urban Food Policies – Developing Sustainability Co-Benefits, Spatial Linkages, Social Inclusion and Sectoral Connections To Transform Food Systems in City-Regions (FoodCLIC)P58.4%
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- 41 Treffer58.4%
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- Integrated Urban Food Policies – Developing Sustainability Co-Benefits, Spatial Linkages, Social Inclusion and Sectoral Connections To Transform Food Systems in City-Regions (FoodCLIC)
Publikationen25
Top 25 nach Zitationen — Quelle: OpenAlex (BAAI/bge-m3 embedded für Matching).
Ecology · 688 Zitationen · DOI
It has been suggested that differences in body size between consumer and resource species may have important implications for interaction strengths, population dynamics, and eventually food web structure, function, and evolution. Still, the general distribution of consumer-'resource body-size ratios in real ecosystems, and whether they vary systematically among habitats or broad taxonomic groups, is poorly understood. Using a unique global database on consumer and resource body sizes, we show that the mean body-size ratios of aquatic herbivorous and detritivorous consumers are several orders of magnitude larger than those of carnivorous predators. Carnivorous predator-prey body-size ratios vary across different habitats and predator and prey types (invertebrates, ectotherm, and endotherm vertebrates). Predator-prey body-size ratios are on average significantly higher (1) in freshwater habitats than in marine or terrestrial habitats, (2) for vertebrate than for invertebrate predators, and (3) for invertebrate than for ectotherm vertebrate prey. If recent studies that relate body-size ratios to interaction strengths are general, our results suggest that mean consumer-resource interaction strengths may vary systematically across different habitat categories and consumer types.
Soil Biology and Biochemistry · 476 Zitationen · DOI
Soil Biology and Biochemistry · 391 Zitationen · DOI
Scientific Reports · 189 Zitationen · DOI
Herbicides containing glyphosate are widely used in agriculture and private gardens, however, surprisingly little is known on potential side effects on non-target soil organisms. In a greenhouse experiment with white clover we investigated, to what extent a globally-used glyphosate herbicide affects interactions between essential soil organisms such as earthworms and arbuscular mycorrhizal fungi (AMF). We found that herbicides significantly decreased root mycorrhization, soil AMF spore biomass, vesicles and propagules. Herbicide application and earthworms increased soil hyphal biomass and tended to reduce soil water infiltration after a simulated heavy rainfall. Herbicide application in interaction with AMF led to slightly heavier but less active earthworms. Leaching of glyphosate after a simulated rainfall was substantial and altered by earthworms and AMF. These sizeable changes provide impetus for more general attention to side-effects of glyphosate-based herbicides on key soil organisms and their associated ecosystem services.
Soil Biology and Biochemistry · 185 Zitationen · DOI
Soil Biology and Biochemistry · 180 Zitationen · DOI
Soil Biology and Biochemistry · 178 Zitationen · DOI
Plant and Soil · 163 Zitationen · DOI
Advances in ecological research/Advances in Ecological Research · 160 Zitationen · DOI
Specialisation and diversity of multiple trophic groups are promoted by different forest features
2018Ecology Letters · 156 Zitationen · DOI
While forest management strongly influences biodiversity, it remains unclear how the structural and compositional changes caused by management affect different community dimensions (e.g. richness, specialisation, abundance or completeness) and how this differs between taxa. We assessed the effects of nine forest features (representing stand structure, heterogeneity and tree composition) on thirteen above- and belowground trophic groups of plants, animals, fungi and bacteria in 150 temperate forest plots differing in their management type. Canopy cover decreased light resources, which increased community specialisation but reduced overall diversity and abundance. Features increasing resource types and diversifying microhabitats (admixing of oaks and conifers) were important and mostly affected richness. Belowground groups responded differently to those aboveground and had weaker responses to most forest features. Our results show that we need to consider forest features rather than broad management types and highlight the importance of considering several groups and community dimensions to better inform conservation.
Soil Biology and Biochemistry · 139 Zitationen · DOI
Pedobiologia · 133 Zitationen · DOI
Functional Ecology · 132 Zitationen · DOI
Summary The complexity of soil food webs and the cryptic habitat hamper the analyses of pools, fluxes and turnover rates of carbon (C) in organisms and the insight into their interactions. Stable isotope analysis has been increasingly used to disentangle soil food web structure, yet it has not been applied to quantitatively characterize C dynamics at the level of the entire soil food web. The present study employed 13 CO 2 pulse labelling to investigate the incorporation of maize root‐derived C into major soil compartments and food web players in an arable field for 25 days. Bulk tissue and compound‐specific (lipids) C isotope ratios were used to quantify pool sizes and 13 C incorporation in bacteria and fungi as primary decomposers, nematodes as key drivers of the microfood web and decomposers and predators among the meso‐ and macrofauna. About 20% of the C assimilated by maize was transferred to below‐ground pools. 13 C was predominantly incorporated into rhizosphere micro‐organisms rather than in those of the bulk soil. 13 C in phospholipid fatty acid biomarkers revealed that root‐derived C was incorporated into the soil food web mainly via saprotrophic fungi rather than via bacteria. Only small amounts of 13 C were transferred to higher trophic levels, predominantly into fungal‐feeding nematodes and macrofauna decomposers. Most importantly, C pool size and 13 C incorporation did not match closely. Although the fungal C stock was less than half that of bacteria, C transfers from fungi into higher trophic levels of the fungal energy pathway, that is fungal‐feeding nematodes and meso‐ and macrofauna decomposers, by far exceed that of bacterial C. This challenges previous views on the dominance of bacteria in root C dynamics and suggests saprotrophic fungi to function as major agents channelling recent photoassimilates into the soil food web.
Oecologia · 127 Zitationen · DOI
Pedobiologia · 125 Zitationen · DOI
Frontiers in Ecology and Evolution · 124 Zitationen · DOI
We here review the ecological role of essential nutritional biomolecules [fatty acids (FA), amino acids (AA), sterols, vitamins] in aquatic and terrestrial food webs, encompassing the forces behind their environmental distribution. Across ecosystems, mutualistic relationships frequently ensure exchanges of vitamins between producer and demander, especially between B 12 and other B vitamins as well as the AA methionine. In contrast, FA, sterols and most AA are transferred up the food chain via classical predatorprey interactions, and therefore have good biomarker potential for trophic interactions. As biomass-flow depends on the absolute amounts of potential limiting resources, considering solely the relative share in the respective biochemical group may underor overestimate the availability to consumers. Moreover, if not accounted for, "hidden" trophic channels, such as gut symbionts as well as metabolic conversion of precursor molecules, can hamper food web analyses. Fundamental differences exist between aquatic and terrestrial ecosystems: Vitamin B 12 produced by ammonium oxidizing Archaea is essential to many aquatic algae, whereas terrestrial plants escaped this dependency by using B 12 independent enzymes. Long-chain 3 polyunsaturated FA (LC-3PUFA) in aquatic systems mainly originate from planktonic algae, while in terrestrial systems, belowground invertebrates can well be a source, also supporting aboveground biota. Interlinks from terrestrial to aquatic ecosystems are of a biochemically totally different nature than vice versa. While biomass rich in proteins and LC-3PUFA is transferred to land, e.g., by trophic relationships, the link from terrestrial to aquatic ecosystems provides recalcitrant plant carbon, mainly devoid of essential nutrients, fuelling detrital food chains. Recent global changes influence food webs via altered input and transfer of essential biomolecules, but separating the effects of nutrients, CO 2 , and warming is not trivial. Current evolutionary concepts (e.g., Black Queen, relaxed selection) considering the costs of metabolic production partly explain food web dynamics, especially for vitamins, whereas adaptations to potential oxidative stress seem to be more important for LC-PUFA. Overall, the provision with essential biomolecules is precious for both heterotrophs and auxotrophs. These nutritional valuable molecules often are kept unaltered in consumer metabolism, including their stable isotope composition, offering a great advantage for their use as trophic markers.
Ecology · 124 Zitationen · DOI
Trophic information—who eats whom—and species' body sizes are two of the most basic descriptions necessary to understand community structure as well as ecological and evolutionary dynamics. Consumer–resource body size ratios between predators and their prey, and parasitoids and their hosts, have recently gained increasing attention due to their important implications for species' interaction strengths and dynamical population stability. This data set documents body sizes of consumers and their resources. We gathered body size data for the food webs of Skipwith Pond, a parasitoid community of grass-feeding chalcid wasps in British grasslands; the pelagic community of the Benguela system, a source web based on broom in the United Kingdom; Broadstone Stream, UK; the Grand Cariçaie marsh at Lake Neuchâtel, Switzerland; Tuesday Lake, USA; alpine lakes in the Sierra Nevada of California; Mill Stream, UK; and the eastern Weddell Sea Shelf, Antarctica. Further consumer–resource body size data are included for planktonic predators, predatory nematodes, parasitoids, marine fish predators, freshwater invertebrates, Australian terrestrial consumers, and aphid parasitoids. Containing 16 807 records, this is the largest data set ever compiled for body sizes of consumers and their resources. In addition to body sizes, the data set includes information on consumer and resource taxonomy, the geographic location of the study, the habitat studied, the type of the feeding interaction (e.g., predacious, parasitic) and the metabolic categories of the species (e.g., invertebrate, ectotherm vertebrate). The present data set was gathered with the intent to stimulate research on effects of consumer–resource body size patterns on food-web structure, interaction-strength distributions, population dynamics, and community stability. The use of a common data set may facilitate cross-study comparisons and understanding of the relationships between different scientific approaches and models.
Nematologica · 124 Zitationen · DOI
The distribution of free living soil nematodes was examined by collecting samples consisting of 16 cores in a small plot. The k of the negative binomial was used to describe patterns in the spatial distribution of total numbers and of several species. Both the horizontal and the vertical distributions were aggregated. The efficiency of the Baermann extraction method was compared with direct microscopic examination. Also, the effect of the extraction time on the recovery was tested. For quantitative extraction the Baermann funnel method was a useful technique, but it was less reliable in providing results of community compositions when compared with direct microscopic examination of field material.
Soil Biology and Biochemistry · 118 Zitationen · DOI
Soil Biology and Biochemistry · 110 Zitationen · DOI
Nematology · 110 Zitationen · DOI
Abstract The growth of Aphelenchoides sp. populations was investigated in vitro with 17 different fungal species as food source. Nematode mass cultures were obtained with saprophytic (Agrocybe, Chaetomium) and especially with mycorrhizal fungi (Cenococcum, Hymenoscyphus, Laccaria). Mitosporic species, like Alternaria, Monocillium or Penicillium, were generally meagre or non-hosts. This poor host suitability is likely due to the release of toxic metabolites (e.g. antibiotics) and/or to morphological differences (e.g., forming of conidiophores) by the fungi. Frequent grazing of nematodes on mycorrhizal mycelia may be of major significance for the establishment and maintenance of mycorrhizal associations in the field. Food preference of Aphelenchoides sp. was tested in choice chamber experiments. Nematodes showed a marked preference for particular fungal species. They changed food source with time, indicating a “mixed diet” selection, probably a strategy to avoid the concentration of toxic metabolites. The attractiveness of a fungus was not necessarily correlated with its suitability as a host. That a poor fungal host can be a strong nematode attractant and influence their spatial distribution in the soil has implications for nematode populations in the field. In Laborexperimenten wurde die Vermehrung des Nematoden Aphelenchoides sp. mit 17 verschiedenen Pilzspezies als Nahrungsgrundlage untersucht. Neben saprophytischen Arten (Agrocybe, Chaetomium) eigneten sich insbesondere Mykorrhizapilze (Cenococcum, Hymenoscyphus, Laccaria) für eine Massenvermehrung. Eine schlechte Nahrungsquelle stellten mitosporische Arten, wie Alternaria, Monocillium oder Penicillium, dar. Dies dürfte auf toxische Stoffwechselprodukte (z.B., Antibiotika) und/oder auf morphologische Unterschiede (z.B., Sporenbildung) zurückzuführen sein. Die gute Vermehrung der Nematoden an Mykorrhizapilzen ist von weitreichender Bedeutung für das Freiland. Negative Auswirkungen auf die Ausbildung und Funktion von Mykorrhiza im Boden sind zu erwarten. In Nahrungswahlexperimenten zeigte Aphelenchoides sp. eine ausgeprägte Präferenz für bestimmte Pilzarten. Das Wechseln zwischen den einzelnen Pilzspezies weist auf die Bevorzugung von “Mischnahrung” hin. Dies dürfte eine Strategie zur Vermeidung von hohen Konzentrationen toxischer Nahrungsbestandteile sein. Präferenz und Nahrungsqualität standen nur in geringem Zusammenhang. Somit können auch Pilze, die eine schlechte Nahrungsquelle darstellen, attraktiv auf Nematoden wirken und deren Verbreitung in Boden und Rhizosphäre beeinflussen.
Nematology · 108 Zitationen · DOI
Soil Biology and Biochemistry · 108 Zitationen · DOI
Philosophical Transactions of the Royal Society B Biological Sciences · 106 Zitationen · DOI
To understand consumer dietary requirements and resource use across ecosystems, researchers have employed a variety of methods, including bulk stable isotope and fatty acid composition analyses. Compound-specific stable isotope analysis (CSIA) of fatty acids combines both of these tools into an even more powerful method with the capacity to broaden our understanding of food web ecology and nutritional dynamics. Here, we provide an overview of the potential that CSIA studies hold and their constraints. We first review the use of fatty acid CSIA in ecology at the natural abundance level as well as enriched physiological tracers, and highlight the unique insights that CSIA of fatty acids can provide. Next, we evaluate methodological best practices when generating and interpreting CSIA data. We then introduce three cutting-edge methods: hydrogen CSIA of fatty acids, and fatty acid isotopomer and isotopologue analyses, which are not yet widely used in ecological studies, but hold the potential to address some of the limitations of current techniques. Finally, we address future priorities in the field of CSIA including: generating more data across a wider range of taxa; lowering costs and increasing laboratory availability; working across disciplinary and methodological boundaries; and combining approaches to answer macroevolutionary questions. This article is part of the theme issue 'The next horizons for lipids as 'trophic biomarkers': evidence and significance of consumer modification of dietary fatty acids'.
Journal of Lipids · 106 Zitationen · DOI
Biomass estimation of arbuscular mycorrhiza (AM) fungi, widespread plant root symbionts, commonly employs lipid biomarkers, predominantly the fatty acid 16:1ω5. We briefly reviewed the application of this signature fatty acid, followed by a case study comparing biochemical markers with microscopic techniques in an arable soil following a change to AM non-host plants after 27 years of continuous host crops, that is, two successive cropping seasons with wheat followed by amaranth. After switching to the non-host amaranth, spore biomass estimated by the neutral lipid fatty acid (NLFA) 16:1ω5 decreased to almost nil, whereas microscopic spore counts decreased by about 50% only. In contrast, AM hyphal biomass assessed by the phospholipid (PLFA) 16:1ω5 was greater under amaranth than wheat. The application of PLFA 16:1ω5 as biomarker was hampered by background level derived from bacteria, and further enhanced by its incorporation from degrading spores used as microbial resource. Meanwhile, biochemical and morphological assessments showed negative correlation for spores and none for hyphal biomass. In conclusion, the NLFA 16:1ω5 appears to be a feasible indicator for AM fungi of the Glomales group in the complex field soils, whereas the use of PLFA 16:1ω5 for hyphae is unsuitable and should be restricted to controlled laboratory studies.
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N2O-Emissionen als Reaktion der mikrobiellen Aktivität auf verschiedene Bewässerungs- und Stickstoffdüngungsstrategien im Kartoffelbau
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Identität, Organisation und Kontakt aus HU-FIS.
- Name
- Prof. Dr. Liliane Rueß
- Titel
- Prof. Dr.
- Fakultät
- Lebenswissenschaftliche Fakultät
- Institut
- Institut für Biologie
- Arbeitsgruppe
- Ökologie
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