Browsing Fakultät für Biologie und Psychologie (inkl. GAUSS) by Referee "Scheu, Stefan Prof. Dr."
Now showing items 1-20 of 39
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A short story: senescence in an annual reptile, Labord’s chameleon (Furcifer labordi)
(2020-12-10)Among animals, the fast-slow continuum is the dominant axis that shapes life-history variation. As resources are limited a trade-off occurs between a short lifespan, young age at maturity, high reproductive rates and high ... -
Allometric structure and topology of food webs: Energetic constraints conserve food-web structure across ecosystems and space
(2014-07-23)Natural ecosystems comprise an innumerable amount of different organisms. These organisms are not separated, they interact and depend on each other. Today’s ecosystems are facing an enormous decline in biodiversity due to ... -
Altitude, litter quality and availability of root derived resources as determinants of decomposition processes and soil microarthropod community composition in tropical montane rainforests in Southern Ecuador
(2016-11-03)Decomposition processes in the high tropical Andes are complex and influenced by a variety of biotic and abiotic factors. Tropical montane rainforests of the high Andes harbour large stocks of dead organic material and ... -
Community structure and guild patterns of soil decomposers in pure and mixed forests of European beech, Norway spruce and Douglas fir
(2021-10-28)Anthropogenic global warming is creating new challenges for forest management in many parts of the world. One vital aspect is the choice of tree species and whether to cultivate monospecific or mixed timber plantations. ... -
Compartmentalization and energy channels within the soil animal food web investigated by stable isotope (13C and 15N) and fatty acid analyses
(2012-11-12)Forest soil food webs are complex and heterogeneous systems. Trophic relationships are hidden from direct observation due to small size of soil animals, cryptic habitat and complex mixtures of basal resources that are ... -
Compositional and functional shifts in belowground fungal communities in tropical land-use systems
(2020-06-23)Tropical low-land rainforests are one of the most diverse ecosystems in the world and provide valuable ecosystem services such as climate change mitigation. They are immensely threatened by expanding human land-use. ... -
Ecological groups of Collembola in agroecosystems as affected by farm-based management practices
(2022-12-15)Present day agriculture is identified as a main threat to biodiversity. At the same time, the productivity of agricultural systems is relying on ecosystem services provided by biota. In order to conserve critical ecosystem ... -
Effects of cold stress on reproductive biology and epigenetic profiles of the alpine plant Ranunculus kuepferi (Ranunculaceae)
(2022-01-17)Alpine habitats are shaped by harsh abiotic conditions and cold climates. Plant life in such habitats is challenging, as environmental influence can alter the conditions for development and reproduction. More specifically, ... -
Extinctions in complex food webs: drivers and consequences
(2013-09-04)Biodiversity is declining rapidly throughout the world. The rate of extinctions matches historical extinction waves and is likely to accelerate even further since two main drivers of biodiversity loss, global warming and ... -
Fatty acid patterns of soil decomposers and predators as affected by plant species richness
(2018-05-24)Relationships between organisms in the soil are very important to control the equilibrium of an ecosystem. Many factors and conditions play a crucial role for the development and functioning of decomposers and predators, ... -
Functional diversity of mycorrhiza in relation to land-use changes and ecosystem functions
(2016-02-19)Managing forest ecosystems has a long tradition in Germany. However, the influence of this intervention on the most important symbiosis partners of the trees, mycorrhizal fungi, is poorly understood. The fungal partner ... -
Fungal Responses to Grazers
(2014-10-10)Fungi are organisms that due to their inability of moving are highly exposed to suffer predation. As a consequence, fungi have evolved different defence strategies to keep fungivores in check. Among these strategies, fungi ... -
Global change effects on the stability of food-web motifs
(2015-10-15)Global change affects ecosystems worldwide and has already caused a massive decline in the world's biodiversity. As the processes behind environmental change continue at ever-accelerating rates, this leads to a severe ... -
Habitat selection, cryptic diversity, phylogeny, and phylogeography of the European Lepidocyrtus lanuginosus species group (Collembola: Entomobryidae)
(2019-02-12)Accurate species identification and assessment of species diversity are essential for studies on phylogeny and phylogeography, adaptation and ecological function. The development of molecular methods triggered the discovery ... -
Impact of rainforest conversion: How prokaryotic communities respond to anthropogenic land use changes
(2020-12-03)In this thesis, the impact of rainforest conversion to the managed land use systems jungle rubber, rubber plantation and oil palm plantation on structure and function of soil microbial communities was investigated. The ... -
Impacts of leaf litter diversity and root resources on microorganisms and microarthropods (Acari, Collembola) during early stages of decomposition in tropical montane rainforest ecosystems
(2021-03-04)Soil organisms influence organic matter turnover and nutrient cycling via processing of organic matter entering the soil as litter and root-derived resources. Plant species differ enormously in the quality and quantity of ... -
Influence of warming on microbial ecosystems
(2017-02-13)Climate change is progressing fast causing losses in biodiversity to the extent that scientists believe the world to be on the brink of the sixth wave of mass extinction. While some global change drivers like pollution, ... -
Intergroup relationships in Verreaux's sifakas (Propithecus verreauxi)
(2015-12-15)How animals achieve collective action for territorial defense and how they establish relationships between neighboring groups has recently become a central topic in the study of animal behavior. The power of a group can ... -
Land-use impacts on biodiversity and ecosystem functioning of complex multitrophic communities
(2016-02-24)Global biodiversity is rapidly declining, resulting in far-reaching impacts on the functioning of ecosystems and human wellbeing. In recent decades, anthropogenic land use has been identified as a major driver of biodiversity ... -
No sex, No problem? Mutation accumulation in asexual animals
(2020-07-03)According to classical predictions, sex is beneficial because it allows for purging of slightly deleterious mutations via effective purifying selection. In asexual organisms mutational load increases over time, eventually ...