A5052029919- Marine and fisheries research
- Fish Ecology and Management Studies
- Marine Bivalve and Aquaculture Studies
- Isotope Analysis in Ecology
- Marine and coastal ecosystems
- Fish Biology and Ecology Studies
- Coral and Marine Ecosystems Studies
- Food Industry and Aquatic Biology
- Marine and environmental studies
- Marine animal studies overview
- Coastal and Marine Management
- Marine Biology and Ecology Research
- Genetic diversity and population structure
- Ichthyology and Marine Biology
- Aquaculture Nutrition and Growth
- Oceanographic and Atmospheric Processes
- Microbial Community Ecology and Physiology
- Evolution and Genetic Dynamics
- Arctic and Antarctic ice dynamics
- Environmental DNA in Biodiversity Studies
- Evolutionary Game Theory and Cooperation
- Cardiovascular and Diving-Related Complications
- Parasite Biology and Host Interactions
- E-Learning and Knowledge Management
- Identification and Quantification in Food
Swedish University of Agricultural Sciences
2016-2025
University of Bologna
2020-2025
CoNISMa
2023-2025
Swedish Institute
2012-2024
University of Gothenburg
2024
Technical University of Denmark
2023
University of North Carolina at Chapel Hill
2021
Gulf of Maine Research Institute
2020
University of Maine
2020
The University of Tokyo
2018
Fisheries can have a large impact on marine ecosystems, because the effects of removing predatory fish may cascade down food web. The implications these cascading processes system functioning and resilience remain source intense scientific debate. By using field data covering 30-year period, we show for Baltic Sea that underlying mechanisms trophic cascades produced shift in ecosystem after collapse top predator cod. We identified an ecological threshold, corresponding to planktivore...
Anthropogenic disturbances intertwined with climatic changes can have a large impact on the upper trophic levels of marine ecosystems, which may cascade down food web. So far it has been difficult to demonstrate multi-level cascades in pelagic environments. Using field data collected during 33-year period, we show for first time four-level community-wide open Baltic Sea. The dramatic reduction cod ( Gadus morhua ) population directly affected its main prey, zooplanktivorous sprat Sprattus...
Ecological adaptation is of major relevance to speciation and sustainable population management, but the underlying genetic factors are typically hard study in natural populations due differentiation caused by selection being confounded with drift subdivided populations. Here, we use whole genome sequencing Atlantic Baltic herring reveal architecture at an unprecedented detailed resolution for both a new niche environment timing reproduction. We identify almost 500 independent loci...
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...
Abstract Ljunggren, L., Sandström, A., Bergström, U., Mattila, J., Lappalainen, Johansson, G., Sundblad, Casini, M., Kaljuste, O., and Eriksson, B. K. 2010. Recruitment failure of coastal predatory fish in the Baltic Sea coincident with an offshore ecosystem regime shift. – ICES Journal Marine Science, 67: 1587–1595. The dominant southwestern Sea, perch pike, have decreased markedly abundance during past decade. An investigation into their recruitment at 135 sites showed that both species...
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...
Abstract The eastern Baltic (EB) cod (Gadus morhua) stock was depleted and overexploited for decades until the mid-2000s, when fishing mortality rapidly declined biomass started to increase, as shown by assessments. These positive developments were partly assigned effective management measures, EB considered one of most successful recoveries in recent times. In contrast this optimistic view, analytical assessment failed 2014, leaving present status unclear. Deteriorated quality some basic...
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...
Atlantic herring is widespread in North and adjacent waters one of the most abundant vertebrates on earth. This species well suited to explore genetic adaptation due minute differentiation at selectively neutral loci. Here, we report hundreds loci underlying ecological different geographic areas spawning conditions. Four these represent megabase inversions confirmed by long read sequencing. The architecture deviates from expectation under a classical infinitesimal model for complex traits...
Abstract No field studies have been performed on the selectivity of herring and sprat in southern Baltic Sea relation to their entire range prey. Accordingly, we tested following hypotheses: (i) are selective feeders (ii) is size- season-dependent. The results show that smaller all size classes strictly zooplanktivorous, selecting principally Temora longicornis Bosmina maritima during autumn Pseudocalanus elongatus winter; larger essentially nektobenthos feeders, predating Mysis mixta...
The Baltic Sea ecosystem has undergone large changes during the last two decades, including a severe reduction in cod and herring biomass but, at same time, increase sprat abundance. lower trophic levels of also changed due to environmental fluctuations, variations salinity volume oxygenated water. In this apparently shifting environment, conditions have inter‐annual past 15–20 years. study, we explore how abiotic factors (i.e. temperature) biotic (biomass copepods Pseudocalanus elongatus ,...
Abstract For the first time an international acoustic survey dataset covering three decades was used to investigate factors shaping spatial and temporal patterns in condition of sprat herring Baltic Proper. Generalized additive models showed that fluctuations density have been main drivers spatio‐temporal changes both condition, evidencing intra‐ inter‐specific dependence mediated by size distribution population. Salinity also important predictor whereas temperature explained only a minor...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 413:241-252 (2010) - DOI: https://doi.org/10.3354/meps08592 Linking fisheries, trophic interactions and climate: threshold dynamics drive herring Clupea harengus growth in central Baltic Sea Michele Casini1,*, Valerio Bartolino1, Juan Carlos Molinero2, Georgs Kornilovs3 1Swedish Board of Fisheries, Institute...
Abstract The eastern Baltic cod stock has recently started to recover, after two decades of severe depletion, however with unexpected side effects. not re‐occupied its former wide distribution range, but remains concentrated in a limited area the southern Sea. biomass forage fish, i.e., sprat and herring, is historic low this area, which combination increasing results locally high predation mortality fish cannibalism cod. In line prey availability, body weight nutritional condition...
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...
The Atlantic herring is one of the most abundant vertebrates on earth but its nucleotide diversity moderate (π = 0.3%), only three-fold higher than in human. Here, we present a pedigree-based estimation mutation rate this species. Based whole-genome sequencing four parents and 12 offspring, estimated 2.0 × 10-9 per base generation. We observed high degree parental mosaicism indicating that large fraction these de novo mutations occurred during early germ cell development. – lowest among...
The Baltic Sea contains the world's largest anthropogenically caused deoxygenated zone, with increasing episodes and areal extent of hypoxia/anoxia. iconic Atlantic cod in has suffered a loss condition which been attributed mainly to hypoxia, habitat "squeeze" contributing density dependent (crowding) effects as well. Otoliths, aragonitic structures that form part hearing/balance system fishes, accumulate Mn presence hypoxia other reducing environments. Otoliths grow over lifetime thus...
Abstract Five decades of stomach content data allowed insight into the development consumption, diet composition, and resulting somatic growth Gadus morhua (Atlantic cod) in eastern Baltic Sea. We show a recent reversal feeding level over body length. Present levels small cod indicate severe limitation increased starvation-related mortality. For young cod, low rate high mortality are manifested through reduction size-at-age. The likely result decrease benthic prey abundance due to hypoxic...
Deoxygenation worldwide is increasing in aquatic systems with implications for organisms' biology, communities and ecosystems. Eastern Baltic cod has experienced a strong decline mean body condition (i.e. weight at specific length) over the past 20 years effects on fishery relying this resource. The decrease been tentatively linked literature to increased hypoxic areas potentially affecting habitat range, but also benthic prey and/or physiology directly. To date, no studies have performed...