Tags » Prokaryotes

Multiple environmental changes induce interactive effects on bacterial degradation activity in the Arctic Ocean

The Arctic Ocean faces multiple environmental changes induced by climate change on both global and regional scale. In addition to global changes in seawater temperature and pH, Arctic waters receive organic matter enrichment due to increasing pelagic primary production, enhanced sea ice melting and increasing terrestrial carbon loads. 225 more words


Response of rare, common and abundant bacterioplankton to anthropogenic perturbations in a Mediterranean coastal site

Bacterioplankton communities are made up of a small set of abundant taxa and a large number of low-abundant organisms (i.e., ‘rare biosphere’). Despite the critical role played by bacteria in marine ecosystems, it remains unknown how this large diversity of organisms are affected by human-induced perturbations, or what controls the responsiveness of rare compared to abundant bacteria. 186 more words


Cellular inorganic carbon fluxes in Trichodesmium: a combined approach using measurements and modelling

To predict effects of climate change on phytoplankton, it is crucial to understand how their mechanisms for carbon acquisition respond to environmental conditions. Aiming to shed light on the responses of extra- and intracellular inorganic C (Ci) fluxes, the cyanobacterium… 217 more words


Optimising methodology for determining the effect of ocean acidification on bacterial extracellular enzymes

To fully understand the impact of ocean acidification on biogeochemical cycles, the response of bacterial extracellular enzymes needs to be considered as they play a central role in the degradation and distribution of labile organic matter. 244 more words


The formation of aggregates in coral reef waters under elevated concentrations of dissolved inorganic and organic carbon: A mesocosm approach

The transformation of dissolved organic carbon (DOC) to particulate organic carbon is the major mechanism through which large sinking organic particles are formed in aquatic systems. 273 more words


Modeling the role of pH on Baltic Sea cyanobacteria

We simulate pH-dependent growth of cyanobacteria with an ecosystem model for the central Baltic Sea. Four model components—a life cycle model of cyanobacteria, a biogeochemical model, a carbonate chemistry model and a water column model—are coupled via the framework for aquatic biogeochemical models. 110 more words


The Cell

Cells are the smallest unit of life that can replicate independently, and are often called the “building blocks of life”. The study of cells is called cell biology. 871 more words