Analyzing the Impacts of Elevated-CO2 Levels on the Development of a Subtropical Zooplankton Community During Oligotrophic Conditions and Simulated Upwelling

The Influence of Plankton Community Structure on Sinking Velocity and Remineralization Rate of Marine Aggregates

“…Gelatinous zooplankton comprised Hydrozoa with unresolved taxonomic affiliation and tunicates, represented by Oikopleura dioica and Doliolum sp. A detailed analysis of the zooplankton community can be found in the papers by Lischka et al (), Taucher, Stange, et al (), and Algueró‐Muñiz et al ().…”

“…Samples were rinsed on board the sampling boats, collected in containers, and stored in cool boxes until arrival at PLOCAN. Back in the laboratories, samples were preserved in denatured ethanol and quantified and classified to the lowest possible taxonomic level using a stereomicroscope (Olympus SZX9) as described by Algueró‐Muñiz et al ()…”

“…Samples were rinsed on board the sampling boats, collected in containers, and stored in cool boxes until arrival at PLOCAN. Back in the laboratories, samples were preserved in denatured ethanol and quantified and classified to the lowest possible taxonomic level using a stereomicroscope (Olympus SZX9) as described by Algueró-Muñiz et al (2019) In situ sizes of aggregates were measured inside the mesocosms with vertical casts of the profiling underwater camera system KIELVISION . The camera is equipped with a 12 megapixel sensor, has a resolution of 25 μm per pixel, and photographs a volume of 120 ml per picture.…”

Application of Stable Carbon Isotopes in a Subtropical North Atlantic MesocosmStudy: A New Approach to Assess CO2 Effects on the Marine Carbon Cycle

“…In a previous mesocosm experiment (De Kluijver et al, 2013), high mesozooplankton biomass was observed and zooplankton products were estimated to have contributed for 82% to the carbon isotopic signature of the sediment material. According to their findings, the observed decreased export in mesocosm M8 compared to the other mesocosms could be related to the fact that the high CO 2 level mesocosm showed a temporal delay in zooplankton development (Algueró-Muñiz et al, 2019) resulting in less degradation and consequent sinking of organic material. This was confirmed by Stange et al (2018) where in the same study, based on changes in the C:N ratio of sediment trap material, they attributed the increased retention of water column POM under elevated levels of CO 2 to the lower abundance of microand mesozooplankton.…”

Metabolic Responses of Subtropical Microplankton After a Simulated Deep-Water Upwelling Event Suggest a Possible Dominance of Mixotrophy Under Increasing CO2 Levels

“…dominated by cyanobacteria, but it also included diatoms, prymnesiophytes, chrysophytes, autotrophic nanoflagellates, and autotrophic dinoflagellates (Hernández-Hernández et al, 2018;Taucher et al, 2018). In addition, the micro-zooplankton part was dominated by aloricate ciliates and heterotrophic dinoflagellates (Algueró-Muñiz et al, 2019). During the simulation of the upwelling event, different stages of the phytoplankton bloom resulted in community composition shifts, ranging from an autotroph-dominated community to a heterotroph-dominated one (Hernández-Hernández et al, 2018;Taucher et al, 2018;Algueró-Muñiz et al, 2019).…”