The ecosystem-level carbon uptake and respiration were measured under di€erent CO2 concentrations in the tropical rainforest and the coastal desert of Biosphere 2, a large enclosed facility. When the mesocosms were sealed and subjected to step-wise changes in atmospheric CO2 between daily means of 450 and 900 lmol mol, net ecosystem exchange (NEE) of CO2 was derived using the diurnal changes in...

In situ mesocosm experiments were performed to examine dissolved gaseous mercury (DGM), mercury volatilization, and sediment interactions in a frozen freshwater fluvial lake (Lake St. Louis, Beauharnois, QC). Two large in situ mesocosm cylinders, one open-bottomed and one close-bottomed (no sediment diffusion), were used to isolate the water column and minimize advection. Mercury volatilization...

Citation: Hopwood MJ, Riebesell U, Arístegui J, Ludwig A, Achterberg EP and Hernández N (2018) Photochemical vs. Bacterial Control of H2O2 Concentration Across a pCO2 Gradient Mesocosm Experiment in the Subtropical North Atlantic. Front. Mar. Sci. 5:105. doi: 10.3389/fmars.2018.00105 Photochemical vs. Bacterial Control of H2O2 Concentration Across a pCO2 Gradient Mesocosm Experiment in the Subt...

1. Outdoor microcosms and mesocosms are useful in risk assessment when lower-tier and higher-tier laboratory studies (single-species and multi-species) indicate potential risks. They can be an important tool in bridging the gap between these studies and in attempting to understand and predict what may occur in the natural environment subjected to these risks. Every microcosm or mesocosm study s...

Citation: Christou ED, Zervoudaki S, Fernandez De Puelles ML, Protopapa M, Varkitzi I, Pitta P, Tsagaraki TM and Herut B (2017) Response of the Calanoid Copepod Clausocalanus furcatus, to Atmospheric Deposition Events: Outcomes from a Mesocosm Study. Front. Mar. Sci. 4:35. doi: 10.3389/fmars.2017.00035 Response of the Calanoid Copepod Clausocalanus furcatus, to Atmospheric Deposition Events: Ou...

Citation: Rahav E, Shun-Yan C, Cui G, Liu H, Tsagaraki TM, Giannakourou A, Tsiola A, Psarra S, Lagaria A, Mulholland MR, Stathopoulou E, Paraskevi P, Herut B and Berman-Frank I (2016) Evaluating the Impact of Atmospheric Depositions on Springtime Dinitrogen Fixation in the Cretan Sea (Eastern Mediterranean)—A Mesocosm Approach. Front. Mar. Sci. 3:180. doi: 10.3389/fmars.2016.00180 Evaluating th...

Citation: Tsiola A, Tsagaraki TM, Giannakourou A, Nikolioudakis N, Yücel N, Herut B and Pitta P (2017) Corrigendum: Bacterial Growth and Mortality after Deposition of Saharan Dust and Mixed Aerosols in the Eastern Mediterranean Sea: A Mesocosm Experiment. Front. Mar. Sci. 4:57. doi: 10.3389/fmars.2017.00057 Corrigendum: Bacterial Growth and Mortality after Deposition of Saharan Dust and Mixed A...

Disease development in flounder (Platichthys flesus) was studied over a period of 3 years in three large mesocosms (40 m x 40 m x 3 m). Two of the mesocosms contained clean sand and the third, sharing a common water circulation with one of the clean-sand mesocosms, was stocked with contaminated dredged spoil. In this way, one of the clean-sand mesocosms was indirectly polluted via the water pha...

This article elucidates the emerging principles required for the design of task-oriented mesocosms. Twelve key factors are discussed including mineral diversity, nutrient reservoirs, steep gradients, high exchange rates, periodic and random pulses, cellular design and mesocosm structure, subecosystems, microbial communities, photosynthetic bases, animal diversity, biological exchanges beyond th...

Grazing by heterotrophic nanoflagellates and < 100 Fm microzooplankton on planktonic bacteria was followed during a mesocosm experiment in the Baltic Sea between 23 July and 12 August 1988 on the SW coast of Finland. During the succession of the planktonic community in one mesocosm, 4 grazing experiments were run with a size-fractionation technique. The size fractions used were: < 1 pm (bacteri...