Zweitveröffentlichungen (grüner Weg)
Recent Submissions
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Processors' understanding of process quality: a qualitative interview study with employees of organic dairies in Germany and Switzerland
(2023-02-07)Purpose: Organic food processing must include organic principles to be authentic. This qualitative study aims to understand the processors' understanding of organic food processing quality. Design/methodology/approach: ... -
Therapeutic targeting of glutaminolysis as an essential strategy to combat cancer
(2019-05-22)Metabolic reprogramming in cancer targets glutamine metabolism as a key mechanism to provide energy, biosynthetic precursors and redox requirements to allow the massive proliferation of tumor cells. Glutamine is also a ... -
Population genetic structure and colonisation of the western Antarctic Peninsula by the seabird tick Ixodes uriae
(2012)Recent observations on the western Antarctic Peninsula have suggested that changing climatic conditions may be increasing pressure on breeding seabirds due to higher exploitation rates by the tick Ixodes uriae. Using data ... -
Limited individual phenotypic plasticity in the timing of and investment into egg laying in southern rockhopper penguins under climate change
(2015)Global climate change requires species to adapt to increasing environmental variability, rising air and ocean temperatures and many other effects, including temperature-associated phenological shifts. Species may adapt to ... -
Diet and foraging areas of Southern Ocean seabirds and their prey inferred from stable isotopes: review and case study of Wilson’s storm-petrel
(2005)Analysis of stable isotope ratios in animal tissues has emerged as a powerful tool for determining the trophic level and composition of prey and foraging location. We summarize here data on the stepwise trophic enrichment ... -
Blood and Intestinal Parasites in Wild Psittaciformes: A Case Study of Burrowing Parrots (Cyanoliseus Patagonus)
(2006)Quantifying parasites is essential for understanding the ecological and evolutionary implications of parasites on their hosts. It is also crucial for many conservation attempts carried out in endangered groups of birds, ... -
Stable isotope analysis reveals sexual and environmental variability and individual consistency in foraging of thin-billed prions
(2008)Based on growing knowledge on the distribution of stable isotopes in marine food webs, a powerful tool to study movements and trophic position of seabirds has been developed. Here we provide an updated review of isotope ... -
Recent impacts of anthropogenic climate change on a higher marine predator in western Britain
(2011)Impacts of anthropogenic climate change on marine ecosystems are now widely acknowledged. In the NE Atlantic, abundant evidence from the partly enclosed waters of the North Sea indicates that recent climate-induced changes ... -
Aspects of the breeding biology of the southern rockhopper penguin Eudyptes c. chrysocome and new consideration on the intrinsic capacity of the A-egg
(2008)The rockhopper penguins Eudyptes chrysocome have recently been split into the northern E. moseleyi and the southern E. chrysocome rockhopper penguin. It is therefore crucial to have a comprehensive understanding of the ... -
Differences in stable isotopes in blood and feathers of seabirds are consistent across species, age and latitude: implications for food web studies
(2008)Stable isotopes of growing feathers and blood both represent assimilated diet, and both tissues are used to study the diet and foraging distribution of marine and terrestrial birds. Although most studies have assumed that ... -
Non-invasive measurement of faecal glucocorticoid metabolites in Upland Geese Chloephaga picta
(2009)Glucocorticoid (GC) hormones rise in response to stressors, including natural events including weather or predator presence, and human activities, such as hunting, scientific research or recreational visits. However, because ... -
Acute stress hyporesponsive period in nestling Thin-billed prions Pachyptila belcheri
(2009)When confronted with acute stressors, vertebrates show a highly conserved evolved sequence of physiological, hormonal and behavioural responses, including the activation of the hypothalamic-pituitary-adrenal axis. Many ... -
Chick provisioning and nest attendance of male and female Wilson’s storm petrels Oceanites oceanicus
(2009)Seabirds show a range of patterns of sexual size dimorphism and sex-specific parental investment, but the underlying causes remain poorly understood. The aim of the present study was to test two longstanding hypotheses of ...
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