A5078606774- Diatoms and Algae Research
- Geology and Paleoclimatology Research
- Microbial Community Ecology and Physiology
- Marine and environmental studies
- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Genomics and Phylogenetic Studies
- Paleontology and Stratigraphy of Fossils
- Methane Hydrates and Related Phenomena
- Integrated Water Resources Management
- Protist diversity and phylogeny
- Isotope Analysis in Ecology
- Botany and Plant Ecology Studies
- Fish Biology and Ecology Studies
- Marine Biology and Environmental Chemistry
- Aquatic Invertebrate Ecology and Behavior
- Marine and coastal plant biology
- Geological formations and processes
- Geological and Geophysical Studies
- Fish Ecology and Management Studies
- Identification and Quantification in Food
- Algal biology and biofuel production
- Aquatic Ecosystems and Phytoplankton Dynamics
- Geological Studies and Exploration
- Ecology and biodiversity studies
East European State Higher School in Przemyśl
2023-2025
University of Szczecin
2015-2024
University of Colorado Boulder
2024
West Pomeranian University of Technology
2020
Nicolaus Copernicus University
2020
Institute of Marine and Coastal Research
2014-2019
Institut de Ciències del Mar
2004-2019
University of Wrocław
1990-2018
TU Bergakademie Freiberg
2015
Collegium Medicum in Bydgoszcz
2015
Summary Priority question exercises are becoming an increasingly common tool to frame future agendas in conservation and ecological science. They effective way identify research foci that advance the field also have high policy relevance. To date, there has been no coherent synthesis of key questions priority areas for palaeoecology, which combines biological, geochemical molecular techniques order reconstruct past environmental systems on time‐scales from decades millions years. We adapted...
DNA barcoding and metabarcoding is increasingly used to effectively precisely assess monitor biodiversity in aquatic ecosystems. As these methods rely on data availability quality of barcode reference libraries, it important develop follow best practices ensure optimal traceability the metadata associated with barcodes for identification. Sufficient metadata, as well vouchers, corresponding each must be available reliable library curation and, thereby, provide trustworthy baselines...
Regime shifts are often used to describe sharp changes between two or more ecological states, each characterized by their own dynamics, stochastic fluctuations, cycles. Ecological theory indicates they can occur either as a result of an abrupt environmental forcing (extrinsic regime shift), be indicative complex responses local‐scale dynamics and thresholds (intrinsic shift). One important area research is develop quantitative tools analyze shifts, but there few studies that have applied...
Diatoms are considered unicellular eukaryotic organisms exclusively depositing biogenic silica. Heretofore there has been no report of calcification by these algae. Here it is shown that calcium carbonate within the stalks Didymosphenia geminata , a nuisance species prolifically colonized streams and rivers globally, in origin occurs as network calcite nanofibers. The nanofibrous framework mineralized polysaccharide matrix imparts mechanical support to stalks, providing stability variable...
(1896). XXXIII. Thermodynamic properties of air. The London, Edinburgh, and Dublin Philosophical Magazine Journal Science: Vol. 41, No. 251, pp. 288-315.
One of the most discussed stages in history Baltic Sea is Ancylus Lake phase. This paper presents detailed information from Darss Sill threshold area as well adjacent basins, i.e. Mecklenburg Bay and Arkona Basin located southwesternmost Baltic. The was transgressed at Ice maximum phase during following regression about 10.3 ka BP a river valley incised to level 23–24 m below present sea (b.s.l.). Preboreal sediments study show lowstand basin deposition existence local lake Bay. system...
Jensen, J. B., Bennike, O., Witkowski, A., Lemke, W. & Kuijpers, A. 1997 (September): The Baltic Ice Lake in the southwestern Baltic: sequence‐, chrono‐ and biostratigraphy. Boreas , Vol. 26, pp. 217–236. Oslo. ISSN 0300–9483. This multidisciplinary study focuses on late‐glacial deposits Mecklenburg Bay ‐Arkona Basin area. sequence stratigraphical method has been used shallow seismic lithological data, combination with biostratigraphical work radiocarbon dating. Glacial‐till underlie...
Abstract Lake Zeribar sediments covering the time period of last 25,000 years were examined for contents seeds, fruits, Characeae, diatoms, and molluscs. Reconstructions variations in lake water level, salinity, trophy suggest a sequence climatic changes. Three pronounced stages low varying lake-water level occurred ca. 17,700–15,400, 12,600–12,000, 10,000–6000 cal yr BP. Some water-level changes correlated with salinity. The most increase salinity 17,700–15,700 12,600–12,000 BP, less...
This paper proposes a new monoraphid genus Gliwiczia Kulikovskiy, Lange-Bertalot & Witkowski, separated from Achnanthes sensu lato. Here we describe four species G. skvortzowii tenuis latarea Witkowski and vixcalcar which all are to science. In terms of morphology, this group closely resembles calcar Cleve. Also proposed is the taxonomic transfer A. Cleve (Cleve) comb. nov. Our conclusions about position based on light microscopic (LM) examination type material extensive LM scanning...
Witkowski, A.; Li, C. L.; Zg[lstrok]obicka, I.; Yu, S. X.; Ashworth, M.; Dąbek, P.; Qin, S.; Tang, C.; Krzywda, Ruppel, Theriot, E. Jansen, R. K.; Car, Płociński, T.; Wang, Y. Sabir, J. Daniszewska-Kowalczyk, G.; Kierzek, A., and Hajrah, N. H., 2016. Multigene assessment of biodiversity diatom (Bacillariophyceae) assemblages from the littoral zone Bohai Yellow Seas in Yantai region Northeast China with some remarks on ubiquitous taxa. Diatoms are important contributors to benthic...
Dozens of monoclonal cultures small-celled araphid diatoms from brackish or marine habitats worldwide were analyzed using morphological observations (light and electron microscopy) molecular data (nuclear-encoded small subunit ribosomal RNA chloroplast encoded rbcL psbC). As a result, we established one new genus Gedaniella, distinguished by shared character (occlusions branched volae, projecting the apical sides areolae) some data, including five species: G. alfred-wegeneri, arenaria,...
Abstract Holocene oceanographic conditions in Disko Bay, West Greenland, were reconstructed from high‐resolution diatom records derived two marine sediment cores. A modern data set composed of 35 dated surface samples collected along the Greenland coast accompanied by remote sensing was used to develop a transfer function reconstruct April sea ice concentration (SIC) supported July temperature (SST) area. Our quantitative reconstruction shows that changes recorded throughout last ~11,000...
Abstract A monophyletic group of dinoflagellates, called ‘dinotoms’, are known to possess evolutionarily intermediate plastids derived from diatoms. The diatoms maintain their nuclei, mitochondria, and the endoplasmic reticulum in addition with plastids, while it has been observed that host dinoflagellates retain permanently by controlling diatom karyokinesis. Previously, we showed dinotoms have repeatedly replaced Here, show process replacements is at two different evolutionary stages...
The current article describes Navicula vanseea sp. nov. , a new species of diatom from Lake Van, highly alkaline lake in Eastern Anatolia (Türkiye). description is based on light and scanning electron microscopy performed two monoclonal cultures. complete nuclear rRNA clusters plastid genomes have been sequenced for these strains the mitogenome one them. plastome both shows probable loss functional ycf35 gene. They also exhibit IB4 group I introns their rrl each encoding putative LAGLIDADG...