A5029738124- Methane Hydrates and Related Phenomena
- Marine and coastal ecosystems
- Isotope Analysis in Ecology
- Marine Biology and Ecology Research
- Geology and Paleoclimatology Research
- Arctic and Antarctic ice dynamics
- Ocean Acidification Effects and Responses
- Atmospheric and Environmental Gas Dynamics
- Marine Bivalve and Aquaculture Studies
- Climate change and permafrost
- Marine and fisheries research
- Geological Studies and Exploration
- Marine and coastal plant biology
- Groundwater and Isotope Geochemistry
- Hydrocarbon exploration and reservoir analysis
- Coastal wetland ecosystem dynamics
- Cryospheric studies and observations
- Microbial Community Ecology and Physiology
- Wastewater Treatment and Nitrogen Removal
- Mercury impact and mitigation studies
- Coastal and Marine Management
- Marine and environmental studies
- Heavy metals in environment
- Geological formations and processes
- Geological Formations and Processes Exploration
Instytut Oceanologii Polskiej Akademii Nauk
2015-2024
Polish Academy of Sciences
2015-2024
Helmholtz-Zentrum Hereon
2023
In recent decades, the land-ocean aquatic continuum, commonly defined as interface, or transition zone, between terrestrial ecosystems and open ocean, has undergone dramatic changes. On-going work stressed importance of treating Aquatic Critical Zones (ACZs) a sensitive system needing intensive investigation. Here, we discuss fjords an ACZ in context sedimentological, geochemical, climatic impacts. These diverse physical features are key controlling sources, transport, burial organic matter...
The global carbon cycle is strongly modulated by organic (OC) sequestration and decomposition. Whereas OC relatively well constrained, there are few quantitative estimates of its susceptibility to Fjords hot spots sedimentation in marine sediments. Here, we adopt fjords as model systems investigate the reactivity sedimentary assessing distribution activation energy required break bonds. Our results reveal that fjord sediments more thermally labile than sediments, which governed unique...
The west Greenland shelf is a dynamic marine environment influenced by various physicochemical and biological processes. We captured high-resolution, large-scale snapshot of water column parameters across the Davis Strait between 64°N 71°N during July 2021. This study provides an overview main factors affecting distribution macronutrients (NOx = nitrate + nitrite, silicate, phosphate), carbonate system (alkalinity (AT), dissolved...
To determine the excess of dissolved dinitrogen gas (ΔN 2 > 0 indicates loss bioavailable nitrogen) in water column Baltic Proper, we measured N /Ar ratios below halocline at 19 stations during different seasons between 2017 and 2021. ΔN concentrations ranged from 1.0 to 32.6 µmol L -1 for all sites. A significant spatial difference (p = 0.0001) was observed, with highest values found Gotland Deep. The seasonal changes were statistically 0.005) observed winter. our knowledge, this is...
Abstract. The west Greenland shelf is a dynamic marine environment influenced by various physicochemical and biological processes. This study provides an overview of the main factors affecting distribution macronutrients, carbonate system parameters, dissolved trace elements during late summer. Key drivers include major ocean currents, melting sea ice, terrestrial freshwater runoff, each uniquely contributing to cycling spatial chemical constituents. Major such as southward-moving Baffin...
Quantifying the burial of organic carbon (OC) and inorganic (IC) species in marine sediments contribute to a better understanding cycle. This is especially important Arctic, where deposition relatively high expected change with climate warming. study aimed quantify rates OC IC two high-latitude fjords – Hornsund Kongsfjorden (European Arctic). Comparison results from three methods quantifying was carried out. Sediment cores, pore water, over-bottom water samples were analyzed for IC. The...
The quantity and quality of organic matter (OM) available for macrobenthos vary on temporal spatial scale, especially in coastal areas, where the seafloor is supplied by both seasonal pulses primary production terrestrial carbon transported rivers. Human-induced environmental changes will alter OM transport to seafloor, thus, it crucial importance recognize impacts spatio-temporal variability macrobenthic food webs. In this study, its effect benthic food-web structure were studied at four...
This study reviews the available and published knowledge of interactions between permafrost groundwater. In its content, paper focuses mainly on groundwater recharge discharge in Arctic Qinghai-Tibet Plateau. The revealed that geochemical composition is site-specific varies significantly within depth aquifers reflecting water-rock related geological history. All reviewed studies clearly indicated thaw causes an increase land. Furthermore, progressing climate warming likely to accelerate...
Organic matter is a minor yet important component of the marine environment. The aim this study was to investigate diurnal and seasonal changes in dissolved particulate organic carbon (DOC POC, respectively). Thus, DOC POC as well chlorophyll (Chl a), δ13C, NO3−, NO2−, NH4+, PO43−, salinity, pH, temperature were regularly measured samples collected for 24 h (2-h resolution) Gdańsk Deep (54°44.730′N, 19°08.531′E) at three water depths (1, 10, 40 m) during sampling campaigns 2011 (May), 2014...
Stable isotope analysis has become one of the most widely used techniques in ecological studies. However, there are still uncertainties about effects sample preservation and pre-treatment on interpretation stable data especially Bayesian mixing models. Here, models were to study how three different methods (drying, freezing, formalin) two pre-treatments (acidification, lipid removal) affect estimation utilized organic matter sources for benthic invertebrate species ( Limecola balthica ,...
The aim of this study was to determine the burial rates nitrogen (N) and phosphorus (P) in sediments two high-latitude fjords: Hornsund Kongsfjorden (Spitsbergen). Both deposition return flux from water column various species these elements were, therefore, quantified. rate then calculated as difference between flux. required concentrations N P were measured surface sediments, pore extracted above-bottom at sampling stations situated along axes fjords. Annual ranged 2.3–8.3 g m−2 for 0.9–2.8...
This pilot study investigated the bioavailability and remineralization kinetics of sediment-derived dissolved organic carbon (DOC) from Gdańsk Deep, a depositional area in Baltic Sea. was assessed long-lasting (126 d) incubation experiment, which mixture DOC sediment pore water bottom exposed to oxic microbial respiration with as control run. The obtained decay curves allowed us distinguish three fractions: labile (DOC L ), semi-labile SL refractory R ). In water, fraction predominant...
The spatial variability in hydrography (salinity and temperature) carbonate chemistry (alkalinity - AT, total inorganic carbon concentration CT, pH, CO2 partial pressure pCO2, the saturation state of aragonite ΩAr) high meltwater season (summer) was investigated four Spitsbergen fjords Krossfjorden, Kongsfjorden, Isfjorden, Hornsund. It found that differences hydrology entail changes system structure. AT decline with decreasing salinity evident, hence it is clear freshwater input generally...
Submarine groundwater discharge (SGD) can be a significant source of dissolved nutrients, inorganic and organic carbon, trace metals in the ocean therefore driver for benthic-pelagic coupling. However, influence hypoxic or anoxic SGD on carbonate system coastal seawater is still poorly understood. In present study, production carbon (DIC) alkalinity (A T ) sediments has been investigated under impact oxygen-deficient was estimated based offset between measured data conservative mixing end...
Abstract The aim of this study was to determine the amount organic and inorganic carbon in foraminifera specimens provide quantitative data on contribution sedimentary pool Adventfjorden. investigation based three calcareous species that occur commonly Svalbard fjords: Cassidulina reniforme , Elphidium excavatum Nonionellina labradorica . Our results show investigated did not contribute substantially Adventfjorden, because they represented only 0.37% sediment. However, foraminiferal biomass...
Macrobenthos is an important component of organic carbon storage and energy flow in marine systems, including these impacted by riverine discharge high share allochthonous matter (OM). Changing environmental conditions, such as lower precipitation snow cover duration, may affect patterns input, therefore it crucial to know how benthic communities utilize different OM sources areas affected rivers. Using Bayesian stable isotope mixing models, we assessed the diet composition common...
Abstract Benthic food‐web structure and organic matter (OM) utilization are important for marine ecosystem functioning. In response to environmental changes related the ongoing climate change, however, many benthic species shifting their ranges colder regions, which may lead altered community composition, but it remains largely unknown how will affect Here, stable isotope analysis was used study OM assess whether spatial patterns reflect today's differentiation among biogeographic regions...
Beach wrack plays an important role as ecosystem engineer with its function to beach fauna in and off the water dune formation preventing coastal erosion at land.The seasonality species composition of micro-tidal coast Baltic Sea was evaluated island Poel litterbag experiments were conducted, both land column shallow coast. Special interest given seasonal decay seagrass Zostera marina until complete disintegration. The decomposition divided into a light group translucent mesh bags, dark...