The land and ocean absorb on average just over half of the anthropogenic emissions of carbon dioxide (CO2) every year. These CO2 "sinks" are modulated by climate change and variability. Here we use a suite of nine dynamic global vegetation models (DGVMs) and four ocean ...

Abstract. Combined in situ and laboratory studies were conducted to document the effects of anoxia on the structure and functioning of meiobenthic communities, with special focus on harpacticoid copepods. In a first step, anoxia was created artificially by means of an u...

<strong>Abstract.</strong> Specimens of the patellogastropod limpet <i>Patella caerulea</i> were collected within (pH<sub>low</sub>-shells) and outside (pH<sub>n</sub>-shells) a CO<sub>2</sub> vent site at Isch...

Arkona Basin (southwestern Baltic Sea) is a seasonally-hypoxic basin characterized by the presence of free methane gas in its youngest organic-rich muddy stratum. Through the use of reactive transport models, this study tracks the development of the methane geochemistry...

<strong>Abstract.</strong> Marine organisms precipitate 0.5–2.0 Gt of carbon as calcium carbonate (CaCO<sub>3</sub>) every year with a profound impact on global biogeochemical element cycles. Biotic calcification relies on calcium ions (Ca<sup...

Oxygen minimum zones (OMZs) show distinct biogeochemical processes that relate to microorganisms being able to thrive under low or even absent oxygen. Microbial degradation of organic matter is expected to be reduced in OMZs, although quantitative evidence is low. Here,...

Abstract. The abundance and activity of the major members of the heterotrophic microbial community – from viruses to ciliates – were studied along a longitudinal transect across the Mediterranean Sea in the summer of 2008. The Mediterranean Sea is characterized by a wes...

This paper presents results on the spatial and temporal distribution patterns of mesozooplankton in the naturally fertilized region to the east of the Kerguelen Islands (Southern Ocean) visited at early bloom stage during the KEOPS2 survey (15 October to 20 November 201...

Abstract. Insight in the biogeochemistry and ecology of sandy sediments crucially depends on a quantitative description of pore water flow and the associated transport of various solutes and particles. Here, we compare and analyse existing models of tracer dynamics in p...

experiments and small-scale incubations of mixed assemblages. Among these, stud-ies on plankton organisms have primarily focussed on coccolithophores (Riebesell etal., 2000; Zondervan et al., 2001, 2002; Sciandra et al., 2003; Leonardos and Geider,2005; Langer et al., 2...