Filetype
In migratory birds, arrival date and hatching date are two key phenological markers that have responded to global warming. A body of knowledge exists relating these traits to evolutionary pressures. In this study, we formalize this knowledge into general mathematical assumptions, and use them in an ecoevolutionary model. In contrast to previous models, this study novelty accounts for both traits-a
Phenological changes among plants due to climate change are well documented, but often hard to interpret. In order to assess the adaptive value of observed changes, we study how annual plants with and without growth constraints should optimize their flowering time when productivity and season length changes. We consider growth constraints that depend on the plant's vegetative mass: self-shading, c
Abstract Phenology is an important part of life history that is gaining increased attention because of recent climate change. We use game theory to model phenological adaptation in migratory birds that compete for territories at their breeding grounds. We investigate how the evolutionarily stable strategy (ESS) for the timing of arrival is affected by changes in the onset of spring, the timing of
The biogeography of speciation and what can be learned about the past mode of speciation from current biogeography of sister species are recurrent problems in evolution. We used a trait- and individual-based, eco-evolutionary model to simulate adaptive radiations and recorded the geographical overlap of species during and after evolutionary branching (speciation). We compared the spatial overlap a
Long-term phenology monitoring has documented numerous examples of changing flowering dates during the last century. A pivotal question is whether these phenological responses are adaptive or not under directionally changing climatic conditions. We use a classic dynamic growth model for annual plants, based on optimal control theory, to find the fitness-maximizing flowering time, defined as the sw
The role of temporal changes and spatial variability in predation risk and prey's means of mitigating such risks is poorly understood in the context of potential threats of global climate change for migratory birds. Yet nest predation, for example, represents a primary source of reproductive mortality in birds. To assess risk birds must spend time prospecting potential breeding sites for cues or s
Social information is used widely in breeding habitat selection and provides an efficient means for individuals to select habitat, but the population-level consequences of this process are not well explored. At low population densities, efficiencies may be reduced because there are insufficient information providers to cue high-quality habitat. This constitutes what we call an information-mediated
The evolution of natural organisms is ultimately driven by the invasion and possible fixation of mutant alleles. The invasion process is highly stochastic, however, and the probability of success is generally low, even for advantageous alleles. Additionally, all organisms live in a stochastic environment, which may have a large influence on what alleles are favorable, but also contributes to the u
Theoretical ecologists have long sought to understand how the persistence of populations depends on the interactions between exogenous (biotic and abiotic) and endogenous (e.g., demographic and genetic) drivers of population dynamics. Recent work focuses on the autocorrelation structure of environmental perturbations and its effects on the persistence of populations. Accurate estimation of extinct
NYTT FRÅN LUNDS UNIVERSITET Mejlutskick på svenska och engelska som vänder sig till fakultetskommunikatörer vid Lunds universitet för vidarespridning i fakultets- och institutionskanaler – Nr 12 v 14 - 2021. UNIVERSITETSGEMENSAMT Tre webbinarier med temat Akademisk frihet Lunds universitet är medlem i Scholars at Risk (SAR), ett nätverk med över 500 medlemsuniversitet i 42 länder som stödjer och f
https://www.cec.lu.se/sites/cec.lu.se/files/2021-04/LU-gemensamt%20Mejlutskick%20Nr%2012-v14-2021.pdf - 2026-06-22
Application for Theme at Pufendorf IAS 2024 2 3 Application for Theme at Pufendorf IAS 2024 TEMPLATE FOR THEME APPLICATION 2024 Start: autumn 2024 Title of the Theme (in English and Swedish): Members Name Department, Faculty E-mail address, telephone Theme coordinator: Theme co-coordinator: Participants: International guest researchers Affiliation Dates for visit Postal address Pufendorfinstitute
https://www.pi.lu.se/en/sites/pi.lu.se.en/files/2023-08/Template%20Theme%20application%20PIAS%202024%20CL.docx - 2026-06-22
Application for Theme at Pufendorf IAS 2024 2 3 Theme Application at Pufendorf IAS 2025 TEMPLATE FOR THEME APPLICATION 2025 Start: autumn 2025 Title of the Theme English: Swedish: Members Name Department, Faculty E-mail address, telephone Theme coordinator: Theme co-coordinator: Participants: International fellows Affiliation Dates for visit Postal address Pufendorfinstitutet, Lunds universitet,
https://www.pi.lu.se/en/sites/pi.lu.se.en/files/2024-09/Template%20Theme%20application%20PIAS%202025%20final.docx - 2026-06-22
Microsoft Word - MSc materials chemistry - Martin Ek's group Materials science – Martin Ek’s group Method Tags: nanoscale characterization, electron microscopy Scientific Tags: catalysis, ceramics, oxidation, combustion Supervisors: Martin Ek Rosén, martin.ek@chem.lu.se. Martin Ek’s group works on nanoscale characterization of materials with applications in e.g. catalysis and machining. The common
https://www.nano.lu.se/sites/nano.lu.se/files/2023-11/M%20Ek.pdf - 2026-06-22
The life-history parameters of most living organisms are modified by fluctuations in environmental conditions. The impact of environmental autocorrelation on population persistence is well understood in single species systems. However, in multi-species communities the impact of stochasticity is complicated by the possibility of different species having differing intrinsic responses to the environm
Most of field stars originate from dissolved star clusters. If the gas cloud is well mixed the stars in the cluster are expected to be chemically homogenous. Although the original kinematical information of a star may be lost under the Galactic dynamic evolution, the chemical signatures are preserved in the form of elemental abundances in individual low-mass stars. The present-day distribution of
Background: A key innovation may allow one group of species to radiate and replace another, but the role of competition and background extinctions for the replacement process is vigorously debated and unclear. Questions: Is a minimum competitive advantage necessary to initiate replacement? Are background extinctions of the incumbent species necessary? What speciation and extinction dynamics charac
Explaining macroevolution from microevolution is a key issue in contemporary evolutionary theory. A recurrent macroevolutionary pattern is that some niche-related traits consistently evolve slower than others, so called niche conservatism. Despite a growing amount of data, the underlying evolutionary processes are not fully understood. I here analyse adaptive radiations in an individual-based eco-
Temperature sums are widely used to predict the seasonal timing of yearly recurring biological events, such as flowering, budburst, and hatching. We use a classic energy allocation model for annual plants to compare a strategy for reproductive timing that follows a temperature sum rule (TSR) with a strategy that follows an optimal control rule (OCR) maximizing reproductive output. We show that the
