A5059188099- Marine and coastal ecosystems
- Microbial Community Ecology and Physiology
- Protist diversity and phylogeny
- Marine and fisheries research
- Marine Biology and Ecology Research
- Marine Bivalve and Aquaculture Studies
- Fish Ecology and Management Studies
- Marine and environmental studies
- Aquatic Invertebrate Ecology and Behavior
- Integrated Water Resources Management
- Bacteriophages and microbial interactions
- Salmonella and Campylobacter epidemiology
- Sustainable Development and Environmental Policy
- Bacterial Genetics and Biotechnology
- Coastal and Marine Management
- Aquatic and Environmental Studies
- Plant Virus Research Studies
- RNA and protein synthesis mechanisms
- Environmental and Social Impact Assessments
- Escherichia coli research studies
- Freshwater macroinvertebrate diversity and ecology
- Advanced biosensing and bioanalysis techniques
- Chromosomal and Genetic Variations
- Aquatic Ecosystems and Phytoplankton Dynamics
- Environmental Conservation and Management
National Marine Fisheries Research Institute
2014-2024
Instytut Oceanologii Polskiej Akademii Nauk
2007-2011
Polish Academy of Sciences
2007-2011
Large‐scale alterations in marine ecosystems as a response to environmental and anthropogenic pressures have been documented worldwide. Yet, these are primarily investigated by assessing abundance fluctuations of few dominant species, which inadequately reflect ecosystem‐wide changes. In addition, it is increasingly recognized that not species identity per se, but their traits determine responses, biological interactions ecosystem functioning. this study, we long‐term, spatio‐temporal...
Most bacteria are found either in marine or fresh waters and transitions between the two habitats rare, even though freshwater co-occur brackish habitats. Estuaries brackish, tideless seas could be where transition of phylotypes to conditions occurs. We tested this hypothesis Gulf Gdańsk (Baltic Sea) by comparing bacterial communities from different zones estuary, via pyrosequencing 16S rRNA amplicons. predicted existence a core microbiome (CM, set abundant OTUs present all samples)...
Summary Phytoflagellates < 10 μm substantially contribute to the abundance, biomass and primary production in polar waters, but information on distribution of specific groups is scarce. We applied catalysed reporter deposition‐fluorescence situ hybridization investigate total phytoflagellates eight along a 100 km transect west off K ongsfjorden ( S pitsbergen) from 29 31 J uly 2010. contributed > 75% depth‐integrated abundance eukaryotes at all stations. Their decreased 1.5 × 12 cells...
Phytoplankton community structure was studied from 2002 to 2016 in the Vistula Lagoon (southern Baltic Sea) context of 2010 shift its population, as well reason for this and environmental impact. This evident indicated by Multidimensional Scaling at Bray Curtis similarity level 31%. Before 2010, primary components phytoplankton were Cyanobacteria (up 98% biomass, October 2007) Chlorophyta (40%, July 2002). After contribution considerably decreased, proportions other phyla increased. The...
Abstract Aerobic anoxygenic phototrophic (AAP) bacteria are an important component of freshwater bacterioplankton. They can support their heterotrophic metabolism with energy from light, enhancing growth efficiency. Based on results cultures, it was hypothesized that photoheterotrophy provides advantage under carbon limitation and facilitates access to recalcitrant or low-energy sources. However, verification these hypotheses for natural AAP communities has been lacking. Here, we conducted...
Abstract Puck Bay is one of the most important resting and wintering places for seabirds in Baltic Sea. It also an important, intensively used fishery ground traditional small‐scale fisheries operating with gillnets. The protection measures proposed consultation Natura 2000 conservation plan encountered considerable resistance from fishermen. serious problem was gap scientific knowledge closure gillnets a substantial area bay period November to April. conditions bird bycatch 1 October 2014...
In Escherichia coli hosts, hydrogen peroxide is one of the factors that may cause induction lambda prophage. Here, we demonstrate H2O2-mediated prophage significantly enhanced in oxyR mutant host. The mRNA levels for cI gene expression were increased a lysogen presence H2O2. On other hand, stimulation p(M) promoter by cI857 overproduced from multicopy plasmid was decreased DeltaoxyR H2O2 but not under normal growth conditions. purified OxyR protein did bind specifically to region. This...
Abstract Although detritivorous Tubificinae and chironomid larvae are important groups in functioning of both, fresh brackish water ecosystem, their co-occurrence patterns sediment is weakly known. We carried out two-year-long research the Vistula Lagoon (southern Baltic Sea), where both ( Limnodrilus hoffmeisteri Potamothrix hammoniensis ) Chironomus balatonicus occur high densities. Because different source food, we hypothesized that ecological interactions between those two detritivores...
Gifsy-1 and Gifsy-2 are lambdoid prophages which contribute to the virulence of Salmonella enterica serovar Typhimurium. The nucleotide sequence replication region both is identical, similar in organization bacteriophage lambda. To investigate Gifsy phages relationship between host chromosome replication, a plasmid contained all genes regulatory sequences required for autonomous bacterial cells was constructed. This plasmid, pGifsy, stably maintained Escherichia coli cells. helicase loader...
The Gulf of Gdańsk is influenced by freshwater inflow from the River Vistula and a wind-driven current along coast. Bacterial communities five stations salinity gradient were sampled during one day analysed terminal restriction fragment length polymorphism (T-RFLP), catalysed reporter deposition-fluorescence in situ hybridisation (CARD-FISH) 16S rRNA gene libraries. On sampling, we observed probable current-driven seawater influx into inner part gulf that separated distinct water bodies....
Abstract The phylogenetic relationships between Tc1 transposable elements have previously been reported for the genomes of some fish species. However, research in this field has hindered by low number genome sequences available databases. application a DNA microarray as universal tool transposon sequence analysis is described here. A prototype oligonucleotide was constructed and used to compare samples genomic isolated from selected These results, combined with earlier molecular showed...
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Event Abstract Back to Ecopath and Ecosim as tools in foodweb understanding - the Gulf of Gdansk example. Joanna Calkiewicz1*, Aleksander Drgas1, Szymon Smolinski1, Maciej T. Tomczak2, Piotr Margonski1, Bärbel Muller-Karulis2 Lena Szymanek1 1 National Marine Fisheries Research Institute, Poland 2 Baltic Sea Centre, Stockholm University, Sweden The dynamics coastal areas their response various anthropogenic pressures, including climate change different economic scenarios, allows us foresee...
Event Abstract Back to Assessing the role of benthic filter feeders in food web Gulf Gdansk (Sothern Baltic) – an Ecopath with Ecosim exercise Aleksander Drgas1* and Joanna Całkiewicz1 1 National Marine Fisheries Research Institute, Poland Benthic are important link energy matter flow between pelagic part ecosystem. Their is particularly highly eutrophicated water bodies, where they may control phytoplankton biomass. On other hand, organisms benthivorous fish diet affect availability for...
Abstract Figure Aerobic Anoxygenic Phototrophic (AAP) bacteria are an important component of freshwater bacterioplankton. They can support their heterotrophic metabolism with energy from light, and by that enhance growth efficiency. Based on results cultures, it was hypothesized photoheterotrophy provides advantage under carbon limitation facilitates access to recalcitrant or low-energy sources. However, verification these hypotheses for natural AAP communities has been lacking. Here, we...
Pierwszą polską placówkę badań morza, Morskie Laboratorium Rybackie (MLR) w Helu powołano 100 lat temu, czerwcu 1921 roku. Utworzone laboratorium zajmowało się badaniem zasobów ryb Bałtyku oraz rozpoznawaniem miejsc połowów, mogących służyć polskiemu rybołówstwu. W 1949 roku nastąpiło włączenie Morskiego Rybackiego do Instytutu z siedzibą Gdyni. Od początku istnienia Instytut jest związany rybołówstwem morskim i jego głównym zadaniem prowadzenie prac naukowo-badawczych tym zakresie. 2005...