A5072899966- Aquatic Ecosystems and Phytoplankton Dynamics
- Fish Ecology and Management Studies
- Marine and coastal ecosystems
- Evolution and Genetic Dynamics
- Mathematical and Theoretical Epidemiology and Ecology Models
- Plant and animal studies
- Ecosystem dynamics and resilience
- Aquatic Ecosystems and Biodiversity
- Physiological and biochemical adaptations
- Ecology and Vegetation Dynamics Studies
- Isotope Analysis in Ecology
- Species Distribution and Climate Change
- Nonlinear Photonic Systems
- Health Systems, Economic Evaluations, Quality of Life
- Algal biology and biofuel production
- Hydrology and Sediment Transport Processes
- Markov Chains and Monte Carlo Methods
- Marine Ecology and Invasive Species
- Climate variability and models
- Probabilistic and Robust Engineering Design
- Aquatic Invertebrate Ecology and Behavior
- Marine Biology and Ecology Research
- Advanced Thermodynamics and Statistical Mechanics
- Nonlinear Dynamics and Pattern Formation
- Microbial Community Ecology and Physiology
Umeå University
2015-2023
Leibniz Institute of Freshwater Ecology and Inland Fisheries
2022-2023
Swedish University of Agricultural Sciences
2022
University of Warsaw
2012
We theoretically explore consequences of warming for predator-prey dynamics, broadening previous approaches in three ways: we include beyond-optimal temperatures, predators may have a type III functional response, and prey carrying capacity depends on explicitly modelled resources. Several robust patterns arise. The relationship between temperature can range from near-independence to monotonically declining/increasing hump-shaped. Predators persist U-shaped region resource supply...
More than 70 years after its introduction, the framework of resource density-dependent consumption rates, also known as predator-prey functional responses, remains a core concept in population and food web ecology. Initially, three types responses were defined: linear (type I), hyperbolic II), sigmoid III). Due to potential stabilize consumer-resource dynamics, type III response immediately became “holy grail” However, experimentally proving that exist, whether controlled laboratory systems...
The curvature of generalized Holling type functional response curves is controlled by a shape parameter b yielding hyperbolic II ( = 1) to increasingly sigmoid III > responses. Empirical estimates vary considerably across taxa. Larger consumer–resource body mass ratios have been suggested generate more pronounced responses and therefore promote dynamic stability. dependence stability on has, however, not systematically explored, the accurate empirical determination challenging....
Abstract Describing how resource consumption rates depend on density, conventionally termed “functional responses,” is crucial to understanding the population dynamics of trophically interacting organisms. Yet, accurately determining functional response for any given pair predator and prey remains a challenge. Moreover, responses are potentially complex surfaces in multidimensional space, where density only one several factors rates. We explored three sources error can be addressed design...
Abstract In many ecosystems, consumers respond to warming differently than their resources, sometimes leading temporal mismatches between seasonal maxima in consumer demand and resource availability. A potentially equally pervasive, but less acknowledged threat the coherence of consumer‐resource interactions is mismatch food quality. Many plant algal communities with shifts toward more carbon‐rich species growth forms, thereby diluting essential elements biomass intensifying stoichiometric...
Summary 1. It has been suggested that chemical information from crowded populations of an animal such as Daphnia carries a cue indicating imminent food limitation, and we suggest in the presence fish kairomones, it may also convey hint need to enhance antipredation defences. 2. We performed two‐factorial experiments with grown flow‐through plankton chambers medium containing high levels Scenedesmus plus on either low or population density absence cues (kairomones) recorded (i) effects growth...
Biological stoichiometry is an approach that focuses on the balance of elements in biological interactions. It a theory has potential to causally link material processes at all levels – from molecules biosphere. But lack coherent operational framework so far restricted progress this direction. Here, we provide help infer how stoichiometric imbalance observed one level impacts other levels. Our enables us high areas need completion, development and integration hope will contribute building...
AbstractMany animals exhibit ontogenetic niche shifts as they grow, which strongly affects population dynamics. However, such can be constrained by the physical environment that occupies. To study this, we develop a physiologically structured model parameterized for brown trout and vary availability of stream used an exclusive juvenile nursery habitat. We find fewer but large, fast-growing adults in lakes with small streams more smaller, slow-growing large streams. show mechanism behind this...