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The effect of phosphorus limitation and heat stress on calcification in Emili...
Calcifying haptophytes (coccolithophores) sequester carbon in the form of organic and inorganic cellular components (coccoliths). We examined the effect of phosphorus (P)... -
Temperature affects the morphology and calcification of Emiliania huxleyi str...
The global warming debate has sparked an unprecedented interest in temperature effects on coccolithophores. The calcification response to temperature changes reported in the... -
Phytoplankton calcification as an effective mechanism to alleviate cellular c...
Marine phytoplankton has developed the remarkable ability to tightly regulate the concentration of free calcium ions in the intracellular cytosol at a level of ~ 0.1 µmol /l in... -
Impact of salinity and growth phase on alkenone distributions in coastal hapt...
Batch cultures of Isochrysis galbana (strain CCMP 1323) and Chrysotila lamellosa (strain CCMP 1307) were grown at salinity ca. 10 to ca. 35 and the alkenone distributions... -
General responses of Thoracosphaera heimii grown under a range of pCO2
Ocean acidification is considered a major threat to marine ecosystems and may particularly affect calcifying organisms such as corals, foraminifera and coccolithophores. Here we... -
Seawater carbonate chemistry, growth rate and processes during experiments wi...
Uptake of half of the fossil fuel CO2 into the ocean causes gradual seawater acidification. This has been shown to slow down calcification of major calcifying groups, such as... -
Seawater carbonate chemistry and growth rate, particulate organic (POC) and i...
Continuous accumulation of fossil CO2 in the atmosphere and increasingly dissolved CO2 in seawater leads to ocean acidification (OA), which is known to affect phytoplankton... -
Physiological responses of coastal and oceanic diatoms to diurnal fluctuation...
Diel and seasonal fluctuations in seawater carbonate chemistry are common in coastal waters, while in the open-ocean carbonate chemistry is much less variable. In both of these... -
Comparative responses of two dominant Antarctic phytoplankton taxa to interac...
We investigated the responses of the ecologically dominant Antarctic phytoplankton species Phaeocystis antarctica (a prymnesiophyte) and Fragilariopsis cylindrus (a diatom) to a... -
Combined effects of CO2 and light on large and small isolates of the unicellu...
We examined the combined effects of light and pCO2 on growth, CO2-fixation and N2-fixation rates by strains of the unicellular marine N2-fixing cyanobacterium Crocosphaera... -
Colimitation of the unicellular photosynthetic diazotroph Crocosphaera watson...
We describe interactive effects of total phosphorus (total P = 0.1-4.0 µmol/L; added as H2NaPO4), irradiance (40 and 150 µmol quanta/m**2/s), and the partial pressure of carbon... -
Seawater carbonate chemistry and reallocation of elemental content and macrom...
Global climate change leads to simultaneous changes in multiple environmental drivers in the marine realm. Although physiological characterization of coccolithophores has been... -
Seawater carbonate chemistry and nitrogen fixation by phosphorus-limited Tric...
Growth of the prominent nitrogen-fixing cyanobacterium Trichodesmium is often limited by phosphorus availability in the ocean. How nitrogen fixation by phosphorus-limited... -
Influence of temperature, pCO2, and dissolved nutrients on the oxidative stre...
We conducted a full-factorial lab experiment to study the individual and combined effects of temperature (18°C and 21°C), pCO2 (400 and 1000 ppm), and dissolved N:P ratio (16... -
Seawater carbonate chemistry and ROS and EPS production of the Trichodesmium ...
The diazotrophic cyanobacterium Trichodesmium is thought to be a major contributor to the new N in the parts of the oligotrophic, subtropical and tropical oceans. In this study... -
Seawater carbonate chemistry and growth,cellular composition and photophysiol...
Compared to the rest of the globe, the Arctic Ocean is affected disproportionately by climate change. Despite these fast environmental changes, we currently know little about... -
Results of a 24-hour laboratory experiment sampling cell concentrations, part...
Cell division of the coccolithophore Emiliania huxleyi and other phytoplankton typically becomes entrained to diel light/dark cycles under laboratory conditions, with division... -
Seawater carbonate chemistry and growth, production rates, and cellular compo...
Arctic phytoplankton and their response to future conditions shape one of the most rapidly changing ecosystems on the planet. We tested how much the phenotypic responses of... -
Seawater carbonate chemistry and elemental composition and growth rates of Em...
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) was used to compute a complete and consistent set of... -
Interactive effects of warming and ocean acidification on the Arctic picoeuka...
In the Arctic Ocean, climate change effects such as warming and ocean acidification (OA) are manifesting faster than in other regions. Yet, we are lacking a mechanistic...