A5083005769- Marine Biology and Ecology Research
- Soil and Water Nutrient Dynamics
- Aquatic Invertebrate Ecology and Behavior
- Isotope Analysis in Ecology
- Marine and coastal plant biology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Coastal and Marine Management
- Heavy metals in environment
- Aluminum toxicity and tolerance in plants and animals
- Coastal wetland ecosystem dynamics
- Soil Carbon and Nitrogen Dynamics
- Microbial Community Ecology and Physiology
- Ocean Acidification Effects and Responses
- Environmental DNA in Biodiversity Studies
- Fish Ecology and Management Studies
- Microplastics and Plastic Pollution
- Water Quality and Pollution Assessment
- Hydrology and Watershed Management Studies
- Odor and Emission Control Technologies
- International Environmental Law and Policies
- Plant Ecology and Soil Science
- International Maritime Law Issues
- Sustainable Agricultural Systems Analysis
- Crop Yield and Soil Fertility
- Mine drainage and remediation techniques
University of Helsinki
2015-2025
Finnish Environment Institute
1994-2023
Åbo Akademi University
2011
Molecular methods such as DNA/eDNA metabarcoding have emerged useful tools to document the biodiversity of complex communities over large spatio-temporal scales. We established an international Marine Biodiversity Observation Network (ARMS-MBON) combining standardised sampling using autonomous reef monitoring structures (ARMS) with for genetic marine hard-bottom benthic communities. Here, we present data our first campaign comprising 56 ARMS units deployed in 2018-2019 and retrieved...
Continuing the international efforts of ARMS Marine Biodiversity Observation Network (ARMS-MBON), we present data from second sampling campaign, coming 56 Autonomous Reef Monitoring Structures (ARMS) deployed in 2020 and 2021 along European coasts under Omics (EMO BON). The set includes information on locations conditions, sample archiving, quality reports collected samples. Data metadata are openly accessible can be downloaded associated GitHub repository. Sequence accessed via Nucleotide...
Abstract The magnitude and frequency of marine heatwaves are increasing predicted to intensify, but our ability understand the real‐world effects on vital benthic ecosystems is lagging behind. Prior insights into impacts often derived from observational or laboratory studies. Observational studies may not fully disentangle complexities potential compound events typically focus severe, lethal heatwaves. Laboratory studies, contrary, while valuable for understanding specific mechanisms, use...
Bioturbation is a key process affecting nutrient cycling in soft sediments. The invasive polychaete genus Marenzelleria spp. has established successfully throughout the Baltic Sea increasing species and functional diversity with possible density-dependent effects on bioturbation associated solute fluxes. We tested of density M. arctia, viridis neglecta fluxes laboratory experiment. Benthic communities intact sediment cores were manipulated by adding numbers results showed that general...
Predators in aquatic environments can be exposed to microplastics (MPs) directly through water and indirectly prey. Laboratory experiments were conducted study the potential of MP trophic transfer Baltic Sea littoral food chains different lengths. The longest studied chain had three levels: zooplankton, chameleon shrimp (Praunus flexuosus) rockpool prawn (Palaemon elegans). 10 μm fluorescence microspheres used as tracer particles ingestion was verified with epifluorescence microscopy....
Densities of submerged vegetation and those associated animals tend to co‐vary. This relationship is often attributed the positive correlation between density its protective value against predators. However, two counteracting basic elements underlying this paradigm limit generality. That is, increasing should result in decreased predator–prey encounters, whilst at same time encounters increase as animal densities increase. These mechanisms thus counteract each other when animals, including...
Marenzelleria spp. are among the most successful non-native benthic species in Baltic Sea. These burrowing polychaetes dig deeper than native species, performing previously lacking ecosystem functions. We examine evidence from experiments, field sampling and modelling that introduction of affects nutrient cycling biogeochemical processes at sediment–water interface. Over longer time scales, bioirrigation by has potential to increase phosphorus retention bottom deposits because oxygen...
The increasing frequency and intensity of marine heatwaves (MHWs) observed worldwide entails changes in the structure functioning ecological communities. While severe extreme often have more destructive effects, subtle effects moderate strong may nevertheless affect ecosystem through complex, context-dependent linkages between different processes. Here we conducted a laboratory experiment to study repeated short-term, MHWs on macrofauna bioturbation associated solute fluxes as measure using...
Abstract While beta diversity has been implicated as a key factor in controlling resilience of communities to stressors, lack long‐term data sets limited the study temporal dynamics diversity. With time series at two sites excess 40 yr, we investigated turnover both species and functional traits system stressed by eutrophication overfishing undergoing climate change invasion. The sites, although located near each other, differ water depth (20 cf . 35 m), but have displayed increased...
Marine heatwaves (MHWs) are increasing in frequency and intensity due to climate change. Several well-documented effects of on community structure exist, but examples their effect functioning species, communities or ecosystems remain scarce. We tested the short-term, moderate strong MHWs macrofauna bioturbation associated solute fluxes as ecosystem functioning. also measured macrofaunal excretion rates assess temperature metabolism. For this experiment, we used unmanipulated sediment cores...
ABSTRACT Molecular methods such as DNA/eDNA metabarcoding have emerged useful tools to document biodiversity of complex communities over large spatio-temporal scales. We established an international Marine Biodiversity Observation Network (ARMS-MBON) combining standardised sampling using autonomous reef monitoring structures (ARMS) with for genetic marine hard-bottom benthic communities. Here, we present the data our first campaign comprising 56 ARMS units deployed in 2018-2019 and retrieved...
Eutrophication of lakes, rivers and coastal waters is the main environmental problem caused by agriculture in Finland. Water quality most Finnish watercourses good or excellent, but intensively cultivated region southern western Finland turbidity water as well algal blooms are a common problem. Generally, phosphorus limiting nutrient for primary production eutrophic lakes role nitrogen becomes more important. Nitrogen from enters mainly dissolved form. By contrast, transported association...
Agriculture accounts for 9 per cent of the total surface area Finland and generates greatest single nutrient input to Finnish watercourses. Since agricultural activity is scattered throughout whole country its effects in lakes are less pronounced than those domestic industrial effluents. On other hand, point source phosphorus loading rivers decreased significantly during nineteen-seventies. Phosphorus which primarily limits production most lakes. The availability runoff waters therefore a...
Coastal marine macrophytes are critical ecosystem engineers providing valuable services. However, they experience detrimental impacts from climate change-induced stresses such as heatwaves (MHW), which becoming more intense and frequent. This study investigated trait responses in real-term heatwaves, Continuous (1MHW) Consecutive (with a 4-day lag phase, 2MHW), on two key macrophytes, the seaweed Fucus vesiculosus seagrass Zostera marina. Our results showed very few negative effects traits...
Abstract Multilateral Environmental Agreements are important international instruments for achieving sustainable development. Nevertheless, their implementation is often not easy and integration with scientific knowledge during can be troublesome. The 1992 Convention on the Protection Use of Transboundary Watercourses International Lakes (Water Convention) has developed a way implementing its’ program work that best described as Community Practice combines developments practical...
The invasive mussel Arcuatula senhousia has successfully colonized shallow soft sediments worldwide. This filter feeding modifies sedimentary habitats while forming dense populations and efficiently contributes to nutrient cycling. In the present study, density of A. was manipulated in intact sediment cores taken within an intertidal Zostera noltei seagrass meadow Arcachon Bay (French Atlantic coast), where species currently occurs at levels corresponding early invasion stage. It aimed...
Abstract The frequency of abnormally warm water events is increasing not only in surface waters, but also subsurface layers, with major impacts on benthic ecosystems. Previous insights heatwave effects have been obtained through field observations or manipulative laboratory experiments. Here, we introduce a system capable inducing elevated temperatures habitats situ over several days. consists commercially available electric boiler, usually applied domestic underfloor heating, and...