A5059329227- Marine and fisheries research
- Fish Ecology and Management Studies
- Marine Bivalve and Aquaculture Studies
- Marine Invertebrate Physiology and Ecology
- Marine and environmental studies
- Food Industry and Aquatic Biology
- Cephalopods and Marine Biology
- Marine Ecology and Invasive Species
- Aquaculture Nutrition and Growth
- Identification and Quantification in Food
- Parasite Biology and Host Interactions
- Fish Biology and Ecology Studies
- Oceanographic and Atmospheric Processes
- Regional Development and Management Studies
- Microplastics and Plastic Pollution
- Aquatic Invertebrate Ecology and Behavior
- Genetic diversity and population structure
- Marine Biology and Ecology Research
- Coral and Marine Ecosystems Studies
- Yersinia bacterium, plague, ectoparasites research
- Ichthyology and Marine Biology
- Ocean Acidification Effects and Responses
- European and International Law Studies
- Helminth infection and control
- Insect and Arachnid Ecology and Behavior
Technical University of Denmark
2016-2025
Aarhus University
2009-2014
Aquatic Systems (United States)
2009
Microplastic is considered a potential threat to marine life as it ingested by wide variety of species. Most studies on microplastic ingestion are short-term investigations and little currently known about how this has developed over the last decades where global plastic production increased exponentially. Here we present first long-term study in environment, covering three from 1987 2015, based unique sample set originally collected conserved for food web studies. We investigated...
Abstract We developed and validated a mixed-stock analysis (MSA) method with 59 single-nucleotide polymorphisms selected from genome-wide data to assign individuals populations in samples of Atlantic herring the North Baltic seas. analysed 3734 spawning locations scientific catches mixed feeding stocks demonstrate “one-fits-all” tool unprecedented accuracy for monitoring spatio-temporal dynamics throughout large geographical range complex stock mixing. re-analysed time-series (2002–2021)...
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...
Abstract Genetic data have great potential for improving fisheries management by identifying the fundamental units—that is, biological populations—and their mixing. However, so far, number of practical cases marine using genetics has been limited. Here, we used Atlantic cod in Baltic Sea to demonstrate applicability a complex scenario involving mixing two genetically divergent populations. Specifically, addressed several assumptions current assessment Through analysis 483 single nucleotide...
The Eastern Baltic cod abundance started rapidly to increase in the mid-2000s as evidenced by analytical stock assessments, due increased recruitment and declining fishing mortality. Since 2014, assessment is not available, leaving present status unclear casting doubts about magnitude of recent recruitment. Earlier studies identified main factors impacting on reproductive success be related loss two out three spawning areas 1980s caused lack major inflows with a concurrent reduction salinity...
Abstract Aim Invasive species are of increasing global concern. Nevertheless, the mechanisms driving further distribution after initial establishment non‐native remain largely unresolved, especially in marine systems. Ocean currents can be a major driver governing range occupancy, but this has not been accounted for most invasion ecology studies so far. We investigate how well areas interconnected to later occupancy regions test potential role ocean secondary spread dynamics order infer...
Abstract Hinrichsen, H-H., Huwer, B., Makarchouk, A., Petereit, C., Schaber, M., and Voss, R. 2011. Climate-driven long-term trends in Baltic Sea oxygen concentrations the potential consequences for eastern cod (Gadus morhua). – ICES Journal of Marine Science, 68: 2019–2028. Variations conditions are influenced by several mechanisms. Generally, frequency magnitude major inflows have been identified as most crucial process renewal oxygen-depleted water masses Sea. Furthermore, enhanced...
A significant increase in the infection level of Baltic cod Gadus morhua with anisakid nematode larvae Contracaecum osculatum and Pseudoterranova decipiens has been recorded during recent years due to expanding local population grey seals Halichoerus grypus, which act as final hosts for these parasites. Here, we report from an investigation 368 (total length [TL] 6-49 cm; caught ICES Subdivision 25) that juvenile (TL 6-30 cm) C. P. is absent or very low, whereas it increases drastically...
The disappearance of larger individuals and the decrease in individual body condition suffered by Atlantic cod Gadus morhua eastern Baltic during past two decades can be expected to affect stock reproductive output. To investigate this, female G. were collected spawning pre-spawning period 2015-2016. current potential fecundity (FP ) was estimated analysed relation total length (LT indices nutritional status such as (K) hepato-somatic index (IH using generalized linear models. In addition,...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 485:25-36 (2013) - DOI: https://doi.org/10.3354/meps10321 Population genetics of invasive ctenophore Mnemiopsis leidyi in Europe reveal source–sink dynamics and secondary dispersal Mediterranean Sea Sören Bolte1,*, Veronica Fuentes2, Holger Haslob3, Bastian Huwer4, Delphine Thibault-Botha5, Dror Angel6, Bella...
In the Western Baltic, invasive ctenophore Mnemiopsis leidyi was recorded for first time in autumn 2006. An eastward propagation of into central and thus important spawning grounds major Baltic fish stocks, observed 2007. The focus present study to investigate seasonal phenology this introduced species whether it is able form a self-sustaining population area. Therefore, variability temporal spatial distribution M. Bornholm Basin analyzed over 4 years following invasion related ambient...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 606:105-118 (2018) - DOI: https://doi.org/10.3354/meps12773 Spatial patterns in infection of cod Gadus morhua with seal-associated liver worm Contracaecum osculatum from Skagerrak central Baltic Sea Maria Sokolova1, Kurt Buchmann2, Bastian Huwer1, Per W. Kania2, Uwe Krumme3, Anders Galatius4, Jakob...
Abstract Hinrichsen, H-H., Hüssy, K., and Huwer, B. 2012. Spatio-temporal variability in western Baltic cod early life stage survival mediated by egg buoyancy, hydrography hydrodynamics. – ICES Journal of Marine Science, 69: 1744–1752. To disentangle the effects different drivers on recruitment marine fish, a spatially temporally explicit understanding both spawning stock size dynamics is required. The objectives this study are to assess transport stages as well environmentally-mediated...
Abstract Native to the Ponto-Caspian region, benthic round goby ( Neogobius melanostomus ) has invaded several European inland waterbodies as well North American Great Lakes and Baltic Sea. The species is capable of reaching very high densities in ecosystems, with not only evidence for significant food-web effects on native biota habitats, but also negative implications coastal fishers. Although generally considered a species, it been shown that migrate deeper areas other lakes during cold...
The diversity and distribution of gelatinous macrozooplankton is described by presenting qualitative quantitative data the jellyfish comb jelly community encountered in North Sea Skagerrak/Kattegat during January/February 2022. Data were generated as part Midwater Ring Net (MIK) survey [1], an ichthyoplankton conducted at night-time quarter 1 (Q1) International Bottom Trawl Survey (IBTS), aboard Danish R/V DANA (DTU Aqua) Swedish Svea (SLU). A total 100 stations investigated using a 13 m...
Abstract Hüssy, K., Hinrichsen, H.-H., and Huwer, B. 2012. Hydrographic influence on the spawning habitat suitability of western Baltic cod (Gadus morhua) – ICES Journal Marine Science, 69: 1736–1743. Recruitment variability marine fish is influenced by reproductive potential stock (i.e. characteristics abundance) survival early life stages, mediated environmental conditions both a physical (water temperature, salinity oxygen conditions, ocean currents) biological nature food, predators)....
Abstract During the 2010s, Atlantic cod Gadus morhua L. in eastern Baltic Sea experienced increasing infection loads of parasitic nematode Contracaecum osculatum (Rudolphi) their livers. Starting 2021, a mandatory part routine sampling protocol on monitoring surveys is to assign liver category individual livers, based number nematodes visible surface, follow spatiotemporal changes loads. The validity method has never been evaluated. Based data from 642 was verified and found be good...
Abstract Voss, R., Hinrichsen, H-H., Stepputtis, D., Bernreuther, M., Huwer, B., Neumann, V., and Schmidt, J. O. 2011. Egg mortality: predation hydrography in the central Baltic. – ICES Journal of Marine Science, 68: 1379–1390. Cod sprat are dominant fish species Baltic pelagic ecosystem, both great economic importance ecologically strongly interlinked. Management is challenged by highly variable recruitment success. Recent studies have identified hydrographic conditions during egg phase to...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 465:217-226 (2012) - DOI: https://doi.org/10.3354/meps09922 Suitability of otolith microchemistry for stock separation Baltic cod F. Heidemann1,*, L. Marohn1,5, H. Hinrichsen1, B. Huwer2, K. Hüssy2, A. Klügel3, U. Böttcher4, R. Hanel5 1Helmholtz Centre Ocean Research Kiel, GEOMAR, Kiel 24105, Germany...