A5013944490- Ocean Acidification Effects and Responses
- Marine and coastal ecosystems
- Marine Bivalve and Aquaculture Studies
- Marine Biology and Ecology Research
- Marine and fisheries research
- Coral and Marine Ecosystems Studies
- Isotope Analysis in Ecology
- Coastal wetland ecosystem dynamics
- Aquatic Ecosystems and Phytoplankton Dynamics
- Peatlands and Wetlands Ecology
- Fish Ecology and Management Studies
- Air Quality and Health Impacts
- Physiological and biochemical adaptations
- Protist diversity and phylogeny
- Indoor Air Quality and Microbial Exposure
- Microbial Community Ecology and Physiology
- Aquaculture Nutrition and Growth
- Hydrocarbon exploration and reservoir analysis
- Toxic Organic Pollutants Impact
University of Agder
2021-2023
Royal Netherlands Institute for Sea Research
2019-2023
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2015-2020
Utrecht University
2019
Every year, the oceans absorb about 30% of anthropogenic carbon dioxide (CO2) leading to a re-equilibration marine carbonate system and decreasing seawater pH. Today, there is increasing awareness that these changes-summarized by term ocean acidification (OA)-could differentially affect competitive ability organisms, thereby provoking restructuring ecosystems biogeochemical element cycles. In winter 2013, we deployed ten pelagic mesocosms in Gullmar Fjord at Swedish west coast order study...
Oceanic uptake of anthropogenic carbon dioxide (CO2) causes pronounced shifts in marine carbonate chemistry and a decrease seawater pH. Increasing evidence indicates that these changes – summarized by the term ocean acidification (OA) can significantly affect food webs biogeochemical cycles. However, current scientific knowledge is largely based on laboratory experiments with single species artificial boundary conditions, whereas studies natural plankton communities are still relatively...
Abstract Gravitational sinking of photosynthetically fixed particulate organic carbon (POC) constitutes a key component the biological pump. The fraction POC leaving surface ocean depends on velocity (SV) and remineralization rate ( C remin ), both which depend plankton community structure. However, drivers in communities controlling SV are poorly constrained. In fall 2014, we conducted 6‐week mesocosm experiment subtropical NE Atlantic Ocean to study influence structure . Oligotrophic...
Ocean acidification may affect zooplankton directly by decreasing in pH, as well indirectly via trophic pathways, where changes carbon availability or pH effects on primary producers cascade up the food web thereby altering ecosystem functioning and community composition. Here, we present results from a mesocosm experiment carried out during 113 days Gullmar Fjord, Skagerrak coast of Sweden, studying plankton responses to predicted end-of-century pCO2 levels. We did not observe any effect...
Cold-water corals (CWCs) are important ecosystem engineers in the deep sea that provide habitat for numerous species and can form large coral mounds. These mounds influence surrounding currents induce distinct hydrodynamic features, such as internal waves episodic downwelling events accelerate transport of organic matter towards mounds, supplying with food. To date, research on distribution at has focussed either seasonal timescales or provided single point snapshots. Data food timescale a...
Abstract Global warming and ocean acidification are among the most important stressors for aquatic ecosystems in future. To investigate their direct indirect effects on a near-natural plankton community, multiple-stressor approach is needed. Hence, we set up mesocosms full-factorial design to study of both high CO2 Baltic Sea autumn concentrating impacts microzooplankton (MZP). MZP abundance, biomass, species composition were analysed over course experiment. We observed that led reduced...
Ocean acidification is considered as a crucial stressor for marine communities. In this study, we tested the effects of IPCC RPC6.0 end-of-century scenario on natural plankton community in Gullmar Fjord, Sweden, during long-term mesocosm experiment from spring bloom to mid-summer situation. The focus study was microzooplankton and its interactions with phytoplankton mesozooplankton. dominated by ciliates, especially small Strombidium sp., exception last days when heterotrophic...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 619:35-51 (2019) - DOI: https://doi.org/10.3354/meps12950 Acclimation and adaptation of coastal calanoid copepod Acartia tonsa ocean acidification: a long-term laboratory investigation Julia A. F. Langer1, Cédric L. Meunier1, Ursula Ecker1, Henriette G. Horn1,4, Klaus Schwenk2, Maarten Boersma1,3,*...
The Eastern Scheldt estuary in the Netherlands has been anthropogenically changed by construction of a storm surge barrier about 30 years ago, affecting abiotic conditions as well phytoplankton and zooplankton (ZP). As ZP communities have not sampled last decades, it is unclear to what extent they during years. We analyzed micro- mesoZP composition background parameters at eight stations spring, summer, autumn 2018. Additionally, we conducted dilution experiments estimate growth microZP...
Ocean acidification has direct physiological effects on organisms, for example by dissolving the calcium carbonate structures of calcifying species. However, non-calcifiers may also be affected changes in seawater chemistry. To disentangle and indirect ocean zooplankton growth, we undertook a study with two model organisms. Specifically, investigated individual short-term exposure to high low pCO2, different phytoplankton qualities as result CO2 incubations growth heterotrophic...
Ocean acidification (OA) is expected to alter plankton community structure in the future ocean. This, turn, could change composition of sinking organic matter and efficiency biological carbon pump. So far, most OA experiments involving entire communities have been conducted meso- eutrophic environments. However, recent studies suggest that effects may be more pronounced during prolonged periods nutrient limitation. In this study, we investigated how OA-induced changes low-nutrient adapted...
Ocean acidification (OA) is affecting marine ecosystems through changes in carbonate chemistry that may influence consumers of phytoplankton, often via trophic pathways. Using a mesocosm approach, we investigated OA effects on subtropical zooplankton community during oligotrophic, bloom, and post-bloom phases under range different pCO2 levels (from ~400 to ~1480 µatm). Furthermore, simulated an upwelling event by adding 650 m-depth nutrient-rich water the mesocosms, which initiated...
The acidification of the oceans could potentially alter marine plankton communities with consequences for ecosystem functioning. While several studies have investigated effects ocean on using traditional methods, few used genetic analyses. Here, we use community barcoding to assess impact composition a coastal in large scale, situ, long-term mesocosm experiment. High-throughput sequencing resulted identification wide range planktonic taxa (Alveolata, Cryptophyta, Haptophyceae, Fungi,...
In the autumn of 2014, nine large mesocosms were deployed in oligotrophic subtropical North-Atlantic coastal waters off Gran Canaria (Spain). Their deployment was designed to address acidification effects from 400μatm CO2 1400μatm CO2, on a plankton community experiencing upwelling nutrient-rich deep water. Among other parameters, chlorophyll (chl-a), potential respiration (Φ), and proteinaceous biomass (B) measured microplankton (0.7-50 μm) during an phase (Phase I), phytoplankton-bloom II)...