A5032614142- Marine and coastal ecosystems
- Microbial Community Ecology and Physiology
- Ocean Acidification Effects and Responses
- Methane Hydrates and Related Phenomena
- Coral and Marine Ecosystems Studies
- Paleontology and Stratigraphy of Fossils
- Healthcare Systems and Challenges
- Clinical Nutrition and Gastroenterology
- Geophysics and Gravity Measurements
- Marine Biology and Ecology Research
GEOMAR Helmholtz Centre for Ocean Research Kiel
2022-2024
University of Agder
2022
Abstract. Ocean alkalinity enhancement (OAE) has been proposed as a carbon dioxide removal technology (CDR), allowing for long-term storage of in the ocean. By changing carbonate speciation seawater, OAE may potentially alter marine ecosystems with implications biological pump. Using mesocosms subtropical North Atlantic, we provide first empirical insights into impacts carbonate-based on vertical flux and attenuation sinking particles an oligotrophic plankton community. We enhanced total...
Abstract. Ocean alkalinity enhancement (OAE) is a strategy for marine carbon dioxide removal that aims to increase the total (TA) of seawater sequester atmospheric CO2 in form dissolved inorganic (DIC). An intense alkalinization resulting from OAE treatment could trigger significant runaway carbonate precipitation process, which may lead loss initially added alkalinity, thereby limiting its efficiency. Even under natural background aragonite saturation states, continuous yet barely...
Ocean alkalinity enhancement (OAE) has been proposed as a carbon dioxide removal technology (CDR) allowing for long-term storage of atmospheric (CO2) in the ocean. By changing carbonate speciation seawater, OAE may alter plankton communities and particle export they drive. Using mesocosms mesotrophic Raunefjord, Bergen (Norway), we employed five different levels each, lime- olivine-based scenario. Total (TA) was raised increments 150 µmol kg-1­ (ΔTAmax = 600 kg-1)...
Sinking marine aggregates have been studied for a long time to understand their role in carbon sequestration. Traditionally, sinking speed and respiration rates treated as independent variables, but two recent papers suggest that there is connection albeit contrasting directions. Here we collected recently formed (<2 days old) from sediment traps mounted underneath mesocosms during different experiments. The were moored off Gran Canaria, Spain (~ 27.9 N; 15.4 E) coastal, sub-tropical...
Table S1 | Carbonate Chemistry Parameters of Day 7 in all OAE levels, calculated by CO2SYS (Pierrot et al., 2011) corrected for watercolumn averaged temperature and salinity.Carbonate dissociation constants (K1 K2) from Lueker al (2000) were chosen.pH is on total scale hydrogen ion concentrations mol kg -1 .5 TA (µmol ) DIC pHT pCO2 (µatm) HCO3 - CO3 2-
Abstract. Ocean alkalinity enhancement (OAE) has been proposed as a carbon dioxide removal technology (CDR) allowing for long term storage of in the ocean. By changing carbonate speciation seawater, OAE may potentially alter marine ecosystems with implications biological pump. Using mesocosmsthe subtropical North Atlantic, we provide first empirical insights into impacts carbonate-based on vertical flux and attenuation sinking particles an oligotrophic plankton community. We enhanced total...
Sinking marine particles have been studied for a long time to understand its role in carbon sequestration. Traditionally, sinking speed and respiration rates treated as independent variables, but two recent papers suggest connection albeit contrasting directions. Alcolombri et al. [2021] demonstrated that slow moving are respired faster than motionless particles, whereas García‐Martín found rate was higher suspended compared with slow- fast-sinking particles. Here we collected settling...