A5006841960- Marine and fisheries research
- Marine Biology and Ecology Research
- Coral and Marine Ecosystems Studies
- Marine Bivalve and Aquaculture Studies
- Fish Ecology and Management Studies
- Marine and coastal plant biology
- Underwater Acoustics Research
- Aquatic Invertebrate Ecology and Behavior
- Coastal and Marine Management
- Isotope Analysis in Ecology
- Underwater Vehicles and Communication Systems
- Environmental DNA in Biodiversity Studies
- Microbial Community Ecology and Physiology
- Species Distribution and Climate Change
- Collaboration in agile enterprises
- Climate change and permafrost
- Identification and Quantification in Food
- Cryospheric studies and observations
- Protist diversity and phylogeny
- Arctic and Antarctic ice dynamics
- Environmental Science and Water Management
- Software Engineering Techniques and Practices
- Environmental and Social Impact Assessments
- Maritime Navigation and Safety
- Open Source Software Innovations
Klaipėda University
2014-2025
Nature Research Centre
2024
Polish Academy of Sciences
2022
Kaunas University of Technology
2022
Eutrophication is a serious threat to aquatic ecosystems globally with pronounced negative effects in the Baltic and other semi-enclosed estuaries regional seas, where algal growth associated excess nutrients causes widespread oxygen free "dead zones" threats sustainability. Decades of policy initiatives reduce external (land-based atmospheric) nutrient loads have so far failed control Sea eutrophication, which compounded by significant internal release legacy phosphorus (P) biological...
In recent decades, the melting of glaciers has led to a consistent increase in number periglacial coastal lagoons that form place receding Svalbard, European Arctic. There is limited data on geomorphology and hydrology these novel formations, primarily because conducting research remote polar regions logistically challenging expensive. We present hydrological bathymetric collected 2022-2024 newly formed lagoon located western part Spitsbergen (Svalbard), between Eidembreen glacier Eidembukta...
Abstract In a world of declining biodiversity, monitoring is becoming crucial. Molecular methods, such as metabarcoding, have the potential to rapidly expand our knowledge supporting assessment, management, and conservation. marine environment, where hard substrata are more difficult access than soft bottoms for quantitative ecological studies, Artificial Substrate Units ( ASU s) allow standardized sampling. We deployed s within five regional seas (Baltic Sea, Northeast Atlantic Ocean,...
Abstract Bučas, M., Bergström, U., Downie, A-L., Sundblad, G., Gullström, von Numers, Šiaulys, A., and Lindegarth, M. 2013. Empirical modelling of benthic species distribution, abundance, diversity in the Baltic Sea: evaluating scope for predictive mapping using different approaches. – ICES Journal Marine Science, 70: 1233–1243. The performance distribution models common Sea was compared four non-linear methods: generalized additive (GAMs), multivariate adaptive regression splines, random...
During the 2009 and 2010 seasons Baltic herring (Clupea harengus membras L.) spawning grounds were investigated by SCUBA divers off Lithuanian Sea coast. The most important substrate was a hard bottom overgrown with red algae Furcellaria lumbricalis, but only 32.8% of potentially suitable locations had eggs. Bottom geomorphological analysis using multibeam bathymetry revealed that distribution beds is not random, determined rather small-scale features. majority detected on local elevations...
This study presents a quantitative approach to mapping benthophagous fish feeding grounds. combines the spatial biomass distribution of benthic prey items and their importance for diets predators. A point based data macrozoobenthos together with set environmental factors was used develop Random Forests models that produce continuous layers individual species. Depending on diet composition feeding, these are overlaid an integrated GIS map seabed showing quality grounds is generated. These...
The killer shrimp Dikerogammarus villosus was recorded for the first time in Lithuanian waters 2015. species detected three sites Curonian Lagoon (on two buoys lagoon strait and harbour, one littoral sampling site) mouth of Šventoji River. presence buoy fouling suggests involvement shipping introduction. Most likely D. has arrived to with commercial ships, while invasion into River may be associated leisure as port situated therein is not currently functioning. Further northward expansion...
The distribution of benthic invertebrates is one the key parameters for marine spatial planning and management, however traditionally data on are based point sampling. Recently statistical methods predictive modelling used to create maps species distribution, nevertheless, no comparative analysis different has been yet performed in Baltic Sea region. In this study occurrence biomass 23 southeastern were modelled. A comparison following was performed: random forests (RF), generalized additive...
Underwater imagery is widely used for a variety of applications in marine biology and environmental sciences, such as classification mapping seabed habitats, environment monitoring impact assessment, biogeographic reconstructions the context climate change, etc. This approach relatively simple cost-effective, allowing rapid collection large amounts data. However, due to laborious time-consuming manual analysis procedure, only small part information stored archives underwater images...
Underwater imagery (UI) is an important and sometimes the only tool for mapping hard-bottom habitats. With development of new camera systems, from hand-held or simple "drop-down" cameras to ROV/AUV-mounted video data collection has increased considerably. However, processing analysing vast amounts can become very labour-intensive, thus making it ineffective both time-wise financially. This task could be simplified if processes their intermediate steps done automatically. Luckily, rise AI...
Abstract Pikeperch ( Sander lucioperca ) is a European fresh and brackish water piscivorous fish, important as both key predator valuable commercial recreational fisheries species. There are concerns that some stocks depleted due to overfishing environmental changes. We review data collection population assessments currently used for nine pikeperch across six countries apply unified assessment framework evaluate status trends. For this we first standardised commercial, scientific,...
Underwater video surveys play a significant role in marine benthic research. Usually, are filmed transects, which stitched into 2D mosaic maps for further analysis. Due to the massive amount of data and time-consuming analysis, need automatic image segmentation quantitative evaluation arises. This paper investigates such techniques on annotated containing hundreds instances brittle stars. By harnessing deep convolutional neural network with pre-trained weights post-processing results common...
Over the last few decades, climate change in Svalbard (European Arctic) has led to emergence and growth of periglacial coastal lagoons place retreating glaciers. In these emerging water bodies, new ecosystems are formed, consisting elements presumably entering lagoon from melting glacier, surrounding tundra bodies ocean. The data presented here were collected an western region Spitsbergen, Svalbard, situated between Eidembreen Glacier Eidembukta Bay 2022-2023. current size area is...
Deep learning applications are attracting considerable interest nowadays and image analysis pipelines no exception. Benthic studies often rely on the subjective evaluation of video material recorded using underwater drones. The demand for automatic segmentation quantitative arises due to large volume data collected. This study performed a semantic task by training PSPNet architecture with ResNet-34 backbone 50 epochs imagery prepared simply extracting few frames or stitch- ing multitude into...
Natural values of marine ecosystems often overlap with human activities. In order to reduce or even eliminate conflicts arising a considerable amount information is needed: identification activities, their location and scale, as well the environment's response separate pressures different sets impacts. Furthermore, value itself can be estimated differently, since valuation assessments range from anthropocentric bio-centric point view. this study, concept system for mapping most sensitive...