Article
Ecology
Jakub Grzesiak, Aleksandra Woltynska, Marek K. Zdanowski, Dorota Gorniak, Aleksander swiatecki, Maria A. Olech, Tamara Aleksandrzak-Piekarczyk
Summary: The study conducted a functional diversity assessment of the microbial community on a specific Antarctic lichen, revealing that the characteristics of the lichen thalli growth sites impact the metabolic diversity of the bacterial communities.
Article
Environmental Sciences
Sang Lyeol Kim, Ok Hwan Yu
Summary: This study investigated the distribution of polychaete community and environmental characteristics in the Yellow Sea Bottom Cold Water zone (YSBCW). The results showed differences in species number and density between inside and outside of YSBCW, with deposit feeders dominating the bottom and differences observed in the surface or subsurface. The study also found strong correlations between polychaete community and depth, temperature, gravel, and sand.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Malgorzata Jarzynowska, Dominika Saniewska, Katarzyna Fudala, Bart lomiej Wilman, Piotr Balazy, Patrycja Plonska, Michal Saniewski
Summary: Antarctic ecosystem is highly vulnerable to mercury pollution, even low levels of mercury can cause significant damage. This study investigated how animals in the Antarctic eliminate mercury and methyl-mercury. The results showed that animals at the top of the food chain, such as elephant seals, had the highest concentrations of total mercury and methyl-mercury in their excrement and fur. Variations in mercury levels were observed in penguins of the genus Pysgocelis, which could be attributed to differences in their diets and foraging areas.
MARINE POLLUTION BULLETIN
(2023)
Article
Geosciences, Multidisciplinary
Wilton Aguiar, Sang-Ki Lee, Hosmay Lopez, Shenfu Dong, Helene Seroussi, Dani C. Jones, Adele K. Morrison
Summary: Melting of the ice sheet in the Southern Ocean has implications for the formation and properties of the Antarctic Bottom Water (AABW). Models have been used to examine the effects of different spatial distributions and magnitudes of meltwater fluxes on AABW. The study finds that a realistic and spatially varying meltwater flux can sustain AABW with higher salinities compared to uniform meltwater flux simulations. Furthermore, the increasing meltwater discharge from the Antarctic ice sheet can contribute to the observed freshening of AABW.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Engineering, Marine
Erica Carlig, Davide Di Blasi, Eva Pisano, Marino Vacchi, Gianfranco Santovito, Laura Ghigliotti
Summary: This study investigated the differences in trophic adaptive morphology and ecology of Antarctic endemic fish genus Trematomus. Through feeding apparatus metrics and geometric morphometrics, it was found that head shape clearly differentiates benthic and pelagic Trematomus species.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
A. Solodoch, A. L. Stewart, A. McC. Hogg, A. K. Morrison, A. E. Kiss, A. F. Thompson, S. G. Purkey, L. Cimoli
Summary: This study uses a global high-resolution ocean/sea-ice simulation and passive tracer deployments to examine the export pathways of Antarctic Bottom Water (AABW). The results show that AABW from different source regions are blended during their export, with Weddell Sea- and Prydz Bay-sourced AABW mainly exported to the Atlantic and Indian Oceans, while Ross Sea- and Adelie Land-sourced AABW mainly exported to the Pacific Ocean. This has important implications for the three-dimensional structure of the global overturning circulation.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Oceanography
E. G. Morozov, D. I. Frey, O. A. Zuev, N. I. Makarenko, A. M. Seliverstova, O. S. Mekhova, V. A. Krechik
Summary: The study conducted measurements along the Vema Fracture Zone (VFZ) with the use of CTD/Lowered Acoustic Doppler Current Profiler stations. It was found that the temperature of Antarctic Bottom Water increases slightly when flowing into the fracture. Unlike other fracture zones, the VFZ has minimal transverse sills, resulting in reduced turbulence and mixing with overlying water. The bottom current accelerates as it flows down from the main sill and partly mixes with surrounding waters.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Fisheries
Noha Elebiary, Faiza Abd Elnaby, Mohamed M. M. Dorgham, Amira M. M. Hamdan, Rasha Hamdy
Summary: This study investigated the quantitative and qualitative dynamics of the polychaete community in the eutrophic Eastern Harbour of Alexandria, Egypt. The results showed that a total of 54 polychaete species were identified, belonging to 27 families and 51 genera. The study also revealed pronounced temporal variations in both species diversity and numerical abundance at the sampled sites.
MARINE AND FRESHWATER RESEARCH
(2023)
Article
Plant Sciences
Nur Diyanah Zamree, Nurul Aini Puasa, Zheng Syuen Lim, Chiew-Yen Wong, Noor Azmi Shaharuddin, Nur Nadhirah Zakaria, Faradina Merican, Peter Convey, Syahida Ahmad, Hasrizal Shaari, Alyza Azzura Azmi, Siti Aqlima Ahmad, Azham Zulkharnain
Summary: Research has shown that Antarctic microorganisms, such as bacteria, yeasts, and fungi, can be used for bioremediation of diesel, offering alternative approaches. However, little attention has been given to using Antarctic microalgae for hydrocarbon degradation. This study focuses on utilizing an Antarctic microalga for the bioremediation of diesel. The microalgal strain used was obtained from Paradise Bay in the western Antarctic Peninsula. The study found that the microalgal strain exhibited higher growth rates under aeration. Factors such as pH, salt concentration, and nitrogen source were optimized for optimal growth and diesel degradation.
Article
Geosciences, Multidisciplinary
L. E. Baker, A. Mashayek, A. C. Naveira Garabato
Summary: This study investigates the mixing processes and water mass transformation in Drake Passage of the Southern Ocean. It finds that multiple topographic interaction processes facilitate the mixing of dense Antarctic Bottom Waters (AABWs) with lighter deep waters, resulting in the upwelling of denser waters and downwelling of lighter waters. The study also highlights the importance of sharp density interfaces in modifying the mixing processes.
Article
Geosciences, Multidisciplinary
Katherine Hutchinson, Julie Deshayes, Christian Ethe, Clement Rousset, Casimir de Lavergne, Martin Vancoppenolle, Nicolas C. Jourdain, Pierre Mathiot
Summary: By simulating the circulation of Antarctic ice shelves, it was found that a grid resolution of 1 degree is sufficient to produce melt rate patterns and total melt fluxes that agree well with high-resolution models and satellite measurements. Allowing sub-ice shelf circulation reduces salinity biases, produces previously unresolved water masses, and reorganizes shelf circulation to better match observations. This study provides a NEMO configuration for improved representation of Antarctic continental shelf circulation and the precursors of Antarctic Bottom Water (AABW).
GEOSCIENTIFIC MODEL DEVELOPMENT
(2023)
Article
Geosciences, Multidisciplinary
Qin Wen, Chenyu Zhu, Zixuan Han, Zhengyu Liu, Haijun Yang
Summary: Research suggests that the Tibetan Plateau has a significant impact on Southern Ocean circulation, with its removal potentially enhancing Antarctic bottom water circulation and affecting global climate. This impact is mainly achieved by increasing Rossby wave trains from the tropical Indo-Pacific to the Amundsen-Bellingshausen Sea.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Eugene G. Morozov, Oleg A. Zuev, Dmitry I. Frey, Viktor A. Krechik
Summary: Studies show that the abyssal current of Antarctic Bottom Water (AABW) in the Vema Channel is very intense, with two branches, one of which dissipates after 100 km while the other extends further into the North Atlantic. The upper branch of the current splits into two, with one descending down a canyon at 24 degrees 30 ' S and the other remaining on the continental slope, with evidence of its existence at 24 degrees 00 ' S as well. This research confirms the existence of a third branch that can be traced up to latitude 24 degrees S through velocity measurements conducted in 2022.
Article
Limnology
Andrew Clarke, Helen J. Peat
Summary: Feeding in benthic marine suspension feeders in Ryder Bay, Antarctica exhibits seasonal and interannual variability, influenced by factors such as water column phytoplankton biomass and ice dynamics.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Chemistry, Analytical
Mariusz Pasik, Krzysztof Bakula, Sebastian Rozycki, Wojciech Ostrowski, Maria Elzbieta Kowalska, Anna Fijalkowska, Marcin Rajner, Slawomir Lapinski, Ireneusz Sobota, Marek Kejna, Katarzyna Osinska-Skotak
Summary: This study focuses on the changes in range and thickness of glaciers in ASPA No. 128 on King George Island in Antarctica from 1956 to 2015. The research shows that the retreat process of glaciers intensified in the last two decades, with the rate depending on the type of glacier front and influenced by rapid temperature increase and glacier surface longitudinal slope.
Article
Biodiversity Conservation
Malgorzata Krzeminska, Jacek Sicinski, Piotr Kuklinski
SYSTEMATICS AND BIODIVERSITY
(2018)
Article
Biodiversity Conservation
Anna Stepien, Krzysztof Pabis, Magdalena Blazewicz
MARINE BIODIVERSITY
(2019)
Article
Oceanography
Krzysztof Pabis, Robert Sobczyk, Jacek Sicinski, Tor Ensrud, Bjorn Serigstadt
Article
Oceanography
Magdalena Blazewicz, Piotr Jozwiak, Lenaick Menot, Krzysztof Pabis
PROGRESS IN OCEANOGRAPHY
(2019)
Article
Oceanography
Anna Stepien, Krzysztof Pabis, Magdalena Blazewicz
PROGRESS IN OCEANOGRAPHY
(2019)
Article
Oceanography
Piotr Jozwiak, Krzysztof Pabis, Angelika Brandt, Magdalena Blazewicz
PROGRESS IN OCEANOGRAPHY
(2020)
Article
Environmental Sciences
Anna Stepien, Krzysztof Pabis, Robert Sobczyk, Bjorn Serigstad
Summary: The Gulf of Guinea is one of the least sampled marine basins in the world. A study in Ghana found a rich diversity of cumacean communities, with a high number of new species but low overall abundance. Shallow waters and slopes had higher species richness, while deeper areas showed unique species composition. Factors like oxygen content, sediments, and pollution influenced the distribution of cumacean communities.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Robert Sobczyk, Patryk Czortek, Bjorn Serigstad, Krzysztof Pabis
Summary: The study assessed the influence of natural and anthropogenic factors on functional diversity of polychaete communities in the Gulf of Guinea. Results showed high species richness and depth-dependent effects on functional richness and evenness. High functional richness in the shallows suggests ecosystem stability and resilience, while lead concentrations impacted community structure at a local scale. The complex set of factors along a depth gradient shapes the functional composition of communities, crucial for future management in the region.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Piotr Jozwiak, Krzysztof Pabis, Robert Sobczyk, Bjorn Serigstad
Summary: The benthic ecology of the Gulf of Guinea is understudied, particularly in relation to tanaidacean communities. This study reveals a high species richness but low abundance of tanaidaceans along the Ghanaian coast. Furthermore, the study highlights the need for intensified taxonomic effort in the region and discusses the depth zonation of tanaidacean communities.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Robert Sobczyk, Bjorn Serigstad, Krzysztof Pabis
Summary: The Tropical East Atlantic is understudied and presents numerous threats associated with climate change, acidification, and pollution. Polychaete diversity was assessed along the Ghana coast, revealing the necessity of further sampling in the region. Various ecological factors influence the polychaete communities, highlighting the importance of microhabitat diversity and regional species pool on local communities. The study increased the number of known polychaetes in the area by at least 50%, challenging previous findings on bioregionalization, biodiversity estimates, and endemism.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Ecology
Mateusz Plociennik, Krzysztof Pabis, Angelika Zima, Leszek Kucharski, Robert Sobczyk
Summary: Due to irrigation, modern forestry, and increasing human settlement, peatlands have become isolated islands in an agricultural and urban landscape. Analysis of a degraded bog in a large city agglomeration in Poland shows that the replacement of typical raised bog plant communities by shrubs and trees, along with hydrological changes and light pollution, has led to the absence of moths typical of bog habitats and the dominance of common, woodland species.
ECOLOGY AND EVOLUTION
(2023)
Review
Fisheries
Krzysztof Pabis
KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS
(2018)
Article
Entomology
Mateusz Plociennik, Martyna Skonieczka, Olga Antczak, Jacek Sicinski
ENTOMOLOGICA FENNICA
(2018)
Article
Ecology
Piotr Jozwiak, Krzysztof Pabis, Anna Jazdzewska, Jacek Sicinski
POLISH POLAR RESEARCH
(2018)