A5011017457- Plant and animal studies
- Evolutionary Game Theory and Cooperation
- Evolution and Genetic Dynamics
- Wildlife Ecology and Conservation
- Animal Behavior and Reproduction
- Historical Gender and Feminism Studies
- Animal Behavior and Welfare Studies
- Animal Ecology and Behavior Studies
- Neuroendocrine regulation and behavior
- Ecology and biodiversity studies
- Amphibian and Reptile Biology
- Ecology and Vegetation Dynamics Studies
- Evolutionary Psychology and Human Behavior
- Demographic Trends and Gender Preferences
- Marine and coastal plant biology
- Bat Biology and Ecology Studies
- Geographies of human-animal interactions
- Reproductive Health and Technologies
- Coral and Marine Ecosystems Studies
- Marine and fisheries research
- Forest Management and Policy
- Insect and Arachnid Ecology and Behavior
Körber Foundation
2023-2025
University of Göttingen
2020-2024
University of Zurich
2018-2021
University of Bern
2017-2020
University of Jyväskylä
2018
Google (United States)
2016
Theory predicts that animals should adjust their escape responses to the perceived predation risk. The information obtain about potential risk may differ qualitatively depending on sensory modality by which a cue is perceived. For instance, olfactory cues reveal better presence or absence of threats, whereas visual can reliably transmit position and attack distance predator. While this suggests differential use through two channels, relative importance vs. when distinguishing between...
Understanding predator-prey interactions is crucial for wildlife management and human-wildlife coexistence, particularly in multi-use landscapes such as Western Europe. As wolves (Canis lupus) recolonize their former habitats, knowledge of diet essential conservation planning public acceptance. However, data regions so far scarce, particular the Alpine region Jura Mountains. opportunistic hunters, adapt to local prey structure, suggesting that abundant wild ungulates are main source. We also...
The timing of sex in facultatively sexual organisms is critical to fitness, due the differing demographic consequences versus asexual reproduction. In addition costs itself, an association with production dormant life stages also influences optimal use sex, especially environments where resting eggs are essential survive unfavourable conditions. Here we document population dynamics and occurrence reproduction natural populations Daphnia magna across their growing season. frequency sexually...
Natural populations often experience environments that vary across space and over time, leading to spatio-temporal variation of the fitness a genotype. If local conditions are poor, organisms can disperse in (physical movement) or time (dormancy, diapause). Facultatively sexual switch between asexual reproduction, thus have third option available deal with maladaptedness: they engage reproduction unfavourable (an ‘abandon-ship’ response). Sexual facultatively is coupled dispersal and/or...
Theories for the evolution of sex rarely include facultatively sexual reproduction. Sexual harassment by males is an underappreciated factor: it should at first sight increase relative advantage asexual reproduction increasing cost sex. However, if same females can perform either or life cycles, then trying to reproduce asexually may not escape harassment. If resisting male costly, might be beneficial a female accept mating and undertake cycle rather than 'insist' on one. We investigate...
Abstract Cyclical parthenogenesis presents an interesting challenge for the study of sex allocation, as individuals’ allocation decisions involve both choice between sexual and asexual reproduction, sons daughters. Male production is therefore expected to depend on ecological evolutionary drivers overall investment in sex, those influencing male reproductive value during periods. We manipulated experimental populations, made repeated observations natural populations over their growing...
Reciprocity can explain cooperative behaviour among non-kin, where individuals help others depending on their experience in previous interactions. Norway rats ( Rattus norvegicus ) cooperate reciprocally according to direct and generalized reciprocity. In a sequence of four consecutive experiments, we show that odour cues from cooperating conspecific are sufficient induce the altruistic food-exchange task. When were enabled non-cooperative partner while receiving olfactory information rat...
Abstract Hunting triggers behavioral responses in wildlife that may have important consequences for conservation and management. We studied movement habitat selection 51 global positioning system‐collared red deer ( Cervus elaphus ) response to 63 large‐scale x̄ = 18.8 km 2 drive hunts conducted 2015‐2022 on a military training area southern Germany. The were characterized by low density of beaters dogs avoid rapid long‐distance displacement deer. determined if spatial differed various...
In mammals, reproduction is influenced by sexual competition, temperature and food availability these factors might be crucial already during early life. Favorable life environment high maternal investment are expected to improve survival reproduction. For example, in via lactation predicts offspring growth. As body mass often associated with fitness consequences, females have the potential influence through their level of investment, which interact effects population density temperature....
Adaptive explanations for dormancy often invoke bet hedging, where reduced mean fitness can be adaptive if it associates with variance. Sex allocation theory typically ignores variance effects and focuses on fitness. For many cyclical parthenogens, these themes become linked, as only sexually produced eggs undergo the needed to survive harsh conditions. We ask how sex timing of evolve when this constraint exists in form a trade-off between asexual reproduction sexual production dormant...
Behavioural changes of prey towards large carnivores can have profound impacts on populations and the ecosystems they inhabit. However, European studies thus far only found limited support for behavioural to returning carnivores. We examined trade-off between forage quality perceived predation risk an ambush (Eurasian lynx; Lynx lynx) cursorial predator (wolf; Canis lupus) response red deer (Cervus elaphus) in experimental set-up within semi-natural grasslands forest patches. hypothesized...
Abstract In mammals, reproduction is influenced by competitive stress, temperature and food availability these factors might be crucial already during early life. Favourable life environment high maternal investment are expected to improve survival reproduction. via lactation predicts offspring growth. As body mass often associated with fitness consequences, females have the potential influence through their level of investment, which interact effects population density temperature. Here, we...