A5070876634- Marine and fisheries research
- Fish Ecology and Management Studies
- Marine Bivalve and Aquaculture Studies
- Physiological and biochemical adaptations
- Isotope Analysis in Ecology
- Marine and coastal ecosystems
- Aquatic Ecosystems and Phytoplankton Dynamics
- Coral and Marine Ecosystems Studies
- Evolution and Genetic Dynamics
- Genetic diversity and population structure
- Climate Change and Health Impacts
- Ecology and Vegetation Dynamics Studies
- Animal Ecology and Behavior Studies
- Fish Biology and Ecology Studies
- Animal Behavior and Reproduction
- Evolutionary Game Theory and Cooperation
- Aquaculture Nutrition and Growth
- Plant and animal studies
- Ocean Acidification Effects and Responses
- Species Distribution and Climate Change
- Aquatic Invertebrate Ecology and Behavior
- Coastal and Marine Management
- Marine animal studies overview
- Marine and environmental studies
- Ecosystem dynamics and resilience
Swedish University of Agricultural Sciences
2016-2025
University of Aberdeen
2021
Swedish National Board of Fisheries
2007-2011
International Institute for Applied Systems Analysis
2006
Lund University
2001-2005
Evolutionary impact assessment is introduced as a framework for quantifying the effects of 29 harvest-induced evolution on utility generated by fish stocks.
Understanding marine regime shifts is important not only for ecology but also developing management that assures the provision of ecosystem services to humanity. While shift theory well developed, there still no common understanding on drivers, mechanisms and characteristic abrupt changes in real ecosystems. Based contributions present theme issue, we highlight some general issues need be overcome a more comprehensive shifts. We find great divide between benthic reef pelagic ocean systems...
Investigating the factors regulating fish condition is crucial in ecology and management of exploited populations. The body cod ( Gadus morhua ) Baltic Sea has dramatically decreased during past two decades, with large implications for fishery relying on this resource. Here, we statistically investigated potential drivers 40 years using newly compiled fishery-independent biological data hydrological observations. We evidenced a combination different operating before after ecological regime...
Understanding the effects of cross-system fluxes is fundamental in ecosystem ecology and biological conservation. Source-sink dynamics spillover processes may link adjacent ecosystems by movement organisms across system boundaries. However, temporal variability these on a whole marine structure have not yet been presented. Here we show, using 35 y multitrophic data series from Baltic Sea, that transitory top-predator cod its main distribution area produces cascading food web an semi-isolated...
Abstract Theory behind ecosystem-based management (EBM) and fisheries (EBFM) is now well developed. However, the implementation of EBFM exemplified by in Europe still largely based on single-species assessments ignores wider ecosystem context impact. The reason for lack or slow EBM specifically a coherent strategy. Such strategy offered recently developed integrated (IEAs), formal synthesis tool to quantitatively analyse information relevant natural socio-economic factors, relation specified...
Current understanding of animal population responses to rising temperatures is based on the assumption that biological rates such as metabolism, which governs fundamental ecological processes, scale independently with body size and temperature, despite empirical evidence for interactive effects. Here, we investigate consequences temperature- scaling vital dynamics populations experiencing warming using a stage-structured consumer-resource model. We show alters stage-specific temperatures,...
Resolving the combined effect of climate warming and exploitation in a food web context is key for predicting future biomass production, size-structure potential yields marine fishes. Previous studies based on mechanistic size-based models have found that bottom-up processes are important drivers fisheries yield changing climates. However, we know less about joint effects 'bottom-up' physiological temperature; how do temperature propagate from individual-level physiology through webs alter...
Abstract How does warming affect maturation and reproductive investment in ectotherms? Younger age smaller size at maturation, as well altered reproduction processes, have been found a few species subjected to elevated temperatures. These observations, however, come from studies that do not distinguish effects of on those growth, are also restricted single generation responses warming, or additional stressors besides the study system. Here, we wild, unexploited fish populations using...
Abstract Food web projections are critical for evaluating potential risks to ecosystems and fisheries under global warming. The temperature dependence of biological processes regional differences in food structure two important sources uncertainty variation climate forced fish communities, but we do not know their magnitude or relative contribution. Here systematically evaluated a range different assumptions about temperature‐dependence on rates, including size‐dependent effects, controlling...
Natural resource management requires approaches to understand and handle sources of uncertainty in future responses complex systems human activities. Here we present one such approach, the "biological ensemble modeling approach," using Eastern Baltic cod (Gadus morhua callarias) as an example. The core approach is expose models with different ecological assumptions climate forcing, multiple realizations each scenario. We simulated long-term response fishing change seven ranging from...
Critical transitions between alternative stable states have been shown to occur across an array of complex systems. While our ability identify abrupt regime shifts in natural ecosystems has improved, detection potential early-warning signals previous such is still very limited. Using real monitoring data a key ecosystem component, we here apply multiple indicators order assess their forewarn major shift the Central Baltic Sea. We show that some and methods can result clear signals, while...
Many marine ecosystems have undergone ‘regime shifts’, i.e. abrupt reorganizations across trophic levels. Establishing whether these constitute shifts between alternative stable states is of key importance for the prospects ecosystem recovery and management. We show how mechanisms underlying caused by predator–prey interactions can be revealed in field data, using analyses guided theory on size-structured community dynamics. This done combining data individual performance (such as growth...
Abstract Olsson, J., Bergström, L., and Gårdmark, A. 2012. Abiotic drivers of coastal fish community change during four decades in the Baltic Sea – ICES Journal Marine Science, 69: 961–970. Evidence for long-term marine ecosystems is increasing worldwide. Coastal areas harbour socio-economically ecologically most vital aquatic ecosystems, but are under anthropogenic pressure. Little known, however, about how environmental perturbations affect development systems. In this paper, datasets...
Climate change studies have long focused on effects of increasing temperatures, often without considering other simultaneously occurring environmental changes, such as browning waters. Resolving how the combination warming and aquatic ecosystems affects fish biomass production is essential for future ecosystem functioning, fisheries, food security. In this study, we analyzed individual- population-level data from 52 temperate boreal lakes in Northern Europe, covering large gradients water...
Abstract A challenge facing ecologists trying to predict responses climate change is the few recent analogous conditions use for comparison. For example, negative relationships between ectotherm body size and temperature are common both across natural thermal gradients in small‐scale experiments. However, it unknown if short‐term representative of long‐term responses. Moreover, understand population warming, we must recognize that individual may vary over ontogeny. To enable predictions how...
Understanding food web responses to global warming, and their consequences for conservation management, requires knowledge on how vary both among within species. Warming can reduce species richness biomass production. However, warming observed at different levels of biological organization may seem contradictory. For example, higher temperatures commonly lead faster individual body growth but decrease production fishes. Here we show that the key resolve this contradiction is intraspecific...
The rate at which biological diversity is altered on both land and in the sea, makes temporal community development a critical fundamental part of understanding global change. With advancements trait-based approaches, focus impact change has shifted towards its potential effects functioning ecosystems. Our mechanistic ability to predict still impeded by lack knowledge long-term functional dynamics that span several trophic levels. To address this, we assessed species richness multiple...
Ectotherms are predicted to ‘shrink’ with global warming, in line general growth models and the temperature-size rule (TSR), both predicting smaller adult sizes warming. However, they also predict faster juvenile rates thus larger size-at-age of young organisms. Hence, result warming on size-structure a population depends interplay between how mortality rate, juvenile- affected by Here, we use two-decade long time series biological samples from unique enclosed bay heated cooling water nearby...
Global warming may affect most organisms and their interactions. Theory simple mesocosm experiments suggest that consumer top–down control over primary producer biomass should strengthen with warming, since respiration increases faster than plant photosynthesis. However, these predictions have so far not been tested on natural communities experienced many generations. Natural systems display a higher diversity, heterogeneity complexity mesocosms, which could alter predicted effects of...