A5016527332- Ocean Acidification Effects and Responses
- Marine Biology and Ecology Research
- Marine Bivalve and Aquaculture Studies
- Marine and coastal ecosystems
- Isotope Analysis in Ecology
- Marine and fisheries research
- Marine and environmental studies
- Methane Hydrates and Related Phenomena
- Physiological and biochemical adaptations
- Environmental Toxicology and Ecotoxicology
- Microbial Community Ecology and Physiology
- Aquaculture Nutrition and Growth
- Food Industry and Aquatic Biology
- Cephalopods and Marine Biology
- Protist diversity and phylogeny
- Arctic and Antarctic ice dynamics
- Insect and Arachnid Ecology and Behavior
- Peatlands and Wetlands Ecology
- Health, Environment, Cognitive Aging
- Indigenous Studies and Ecology
- Coral and Marine Ecosystems Studies
- International Relations in Latin America
- Atmospheric and Environmental Gas Dynamics
- Spacecraft and Cryogenic Technologies
- Geology and Paleoclimatology Research
GEOMAR Helmholtz Centre for Ocean Research Kiel
2014-2023
Kiel University
2001-2023
Leibniz Association
2011
Abstract. Due to their aragonitic shell, thecosome pteropods may be particularly vulnerable ocean acidification driven by anthropogenic CO2 emissions. This applies specifically species inhabiting Arctic surface waters that are projected become temporarily and locally undersaturated with respect aragonite as early 2016. study investigated the effects of rising partial pressure (pCO2) elevated temperature on pre-winter juveniles polar pteropod Limacina helicina. After a 29 day experiment in...
Abstract. Ocean acidification and carbonation, driven by anthropogenic emissions of carbon dioxide (CO2), have been shown to affect a variety marine organisms are likely change ecosystem functioning. High latitudes, especially the Arctic, will be first encounter profound changes in carbonate chemistry speciation at large scale, namely under-saturation surface waters with respect aragonite, calcium polymorph produced several this region. During CO2 perturbation study Kongsfjorden on west...
Interpreting the vulnerability of pelagic calcifiers to ocean acidification (OA) is enhanced by understanding their critical thresholds and how these are modified other climate change stressors (e.g. warming). To address this need, we undertook a three-part data synthesis for pteropods, one calcifying zooplankton group. We conducted first meta-analysis threshold analysis literature characterizing pteropod responses OA warming synthetizing dataset comprising 2097 datapoints. Meta-analysis...
Abstract Ocean acidification and warming will be most pronounced in the A rctic O cean. Aragonite shell‐bearing pteropods are expected to among first species suffer from ocean acidification. Carbonate undersaturation occur winter because this period is also characterized by low food availability, overwintering stages of polar may develop into a bottleneck their life cycle. The impacts on growth, shell degradation (dissolution), mortality two thecosome pteropods, L imacina helicina boreal ....
The impact of anthropogenic ocean acidification (OA) on marine ecosystems is a vital concern facing scientists and managers resources. Euthecosomatous pteropods (holoplanktonic gastropods) represent an excellent sentinel for indicating exposure to OA because the sensitivity their aragonite shells conditions less favorable calcification. However, integration observations, experiments modelling efforts needed make accurate predictions how these organisms will respond future changes...
The oceans’ uptake of anthropogenic carbon dioxide (CO 2 ) decreases seawater pH and alters the inorganic speciation – summarized in term ocean acidification (OA). Already today, coastal regions experience episodic events during which surface layer drops below values projected for at end century. Future OA is expected to further enhance intensity these extreme events. To evaluate influence such regions, we deployed eight pelagic mesocosms 53 days Raunefjord, Norway, enclosed 56–61 m 3 local...
Abstract. Eastern boundary upwelling systems (EBUS) are among the most productive marine ecosystems on Earth. The production of organic material is fueled by nutrient-rich deep waters and high incident light at sea surface. However, biotic abiotic factors can modify surface related biogeochemical processes. Determining these important because EBUS considered hotspots climate change, reliable predictions their future functioning requires understanding mechanisms driving cycles therein. In...
Abstract. Community approaches to investigating ocean acidification (OA) effects suggest a high tolerance of micro- and mesozooplankton carbonate chemistry changes expected occur within this century. Plankton communities in the coastal areas Baltic Sea frequently experience pH variations partly exceeding projections for near future both on diurnal seasonal basis. We conducted large-scale mesocosm CO2 enrichment experiment ( ∼ 55 m3) enclosing natural plankton community Tvärminne–Storfjärden...
Abstract. Ocean acidification and carbonation, driven by anthropogenic emissions of carbon dioxide (CO2), have been shown to affect a variety marine organisms are likely change ecosystem functioning. High latitudes, especially the Arctic, will be first encounter profound changes in carbonate chemistry speciation at large scale, namely under-saturation surface waters with respect aragonite, calcium polymorph produced several this region. During CO2 perturbation study 2010, framework EU-funded...
Abstract. Ocean acidification is caused by increasing amounts of carbon dioxide dissolving in the oceans leading to lower seawater pH. We studied effects lowered pH on calanoid copepod Eurytemora affinis during a mesocosm experiment conducted coastal area Baltic Sea. measured reproductive success as function pH, chlorophyll concentration, diatom and dinoflagellate biomass, nitrogen (C : N) ratio suspended particulate organic matter, well fatty acid composition. The laboratory-based was...
Abstract. Anthropogenic carbon dioxide (CO2) emissions are reducing the pH in world's oceans. The plankton community is a key component driving biogeochemical fluxes, and effect of increased CO2 on critical for understanding ramifications ocean acidification global fluxes. We determined composition measured primary production, respiration rates export (defined here as sinking out shallow, coastal area) during an experiment. Mesocosms ( ∼ 55 m3) were set up Baltic Sea with gradient levels...
Abstract. Community approaches investigating ocean acidification (OA) effects suggest a high tolerance of micro- and mesozooplankton to carbonate chemistry changes expected occur within this century. Plankton communities in the coastal areas Baltic Sea frequently experience pH variations partly exceeding projections for near future both on diurnal seasonal basis, thus some level tolerance/adaptation may be expected. We conducted large-scale mesocosm CO2 enrichment experiment (~ 55 m3)...
Abstract. About a quarter of anthropogenic CO2 emissions are currently taken up by the oceans, decreasing seawater pH. We performed mesocosm experiment in Baltic Sea order to investigate consequences increasing levels on pelagic carbon fluxes. A gradient different scenarios, ranging from ambient ( ∼ 370 µatm) high 1200 µatm), were set bags 55 m3). determined standing stocks and temporal changes total particulate (TPC), dissolved organic (DOC), inorganic (DIC), (POC) specific plankton groups....
Abstract. Anthropogenic carbon dioxide (CO2) emissions are causing severe changes in the global inorganic balance of oceans. Associated ocean acidification is expected to pose a major threat marine ecosystems worldwide, and it also be amplified Baltic Sea where system already exposed relatively large natural seasonal diel pH fluctuations. We studied responses larvae benthic key species Macoma balthica range future CO2 scenarios using six ∼ 55 m3 mesocosms encompassing entire pelagic...
Abstract. Due to their aragonitic shell thecosome pteropods may be particularly vulnerable ocean acidification driven by anthropogenic CO2 emissions. This applies specifically species inhabiting Arctic surface waters that are projected become locally undersaturated with respect aragonite as early 2016. study investigated the effects of rising pCO2 partial pressures and elevated temperature on pre-winter juveniles polar pteropod Limacina helicina. After a 29 days experiment in...
Abstract. The Humboldt Current Upwelling System (HCS) is the most productive eastern boundary upwelling system (EBUS) in terms of fishery yield on planet. EBUSs are considered hotspots climate change with predicted expansion mesopelagic oxygen minimum zones (OMZs) and related changes frequency intensity nutrient-rich, low-oxygen deep water. To increase our mechanistic understanding how impacts plankton communities trophic links, we investigated mesozooplankton community succession gut...