[HTML][HTML] Origin, dynamics, and implications of extracellular DNA pools in marine sediments

A Torti, MA Lever, BB Jørgensen - Marine genomics, 2015 - Elsevier
In marine sediments, DNA occurs both inside and outside living organisms. DNA not
enclosed in living cells may account for the largest fraction of total DNA, and include …

Significance of predation by protists in aquatic microbial food webs

EB Sherr, BF Sherr - Antonie Van Leeuwenhoek, 2002 - Springer
Predation in aquatic microbial food webs is dominated by phagotrophic protists, yet these
microorganisms are still understudied compared to bacteria and phytoplankton. In pelagic …

Predation on prokaryotes in the water column and its ecological implications

J Pernthaler - Nature Reviews Microbiology, 2005 - nature.com
The oxic realms of freshwater and marine environments are zones of high prokaryotic
mortality. Lysis by viruses and predation by ciliated and flagellated protists result in the …

Nitrogen fixation in the marine environment

DG Capone, EJ Carpenter - Science, 1982 - science.org
Cyanobacteria of the genus Oscillatoria (Trichodesmium) account for annual inputs of
nitrogen to the world's oceans of about 4.8× 1012 grams while benthic environments …

Plankton and nutrient dynamics in marine waters

L Legendre, F Rassoulzadegan - Ophelia, 1995 - Taylor & Francis
Biological oceanographers generally distinguish between two contrasting trophic pathways
in the pelagic environment, ie the herbivorous and the microbial food webs. The former goes …

The uptake of inorganic nutrients by heterotrophic bacteria

DL Kirchman - Microbial Ecology, 1994 - Springer
It is now well known that heterotrophic bacteria account for a large portion of total uptake of
both phosphate (60% median) and ammonium (30% median) in freshwaters and marine …

Metabolic and trophic interactions modulate methane production by Arctic peat microbiota in response to warming

AT Tveit, T Urich, P Frenzel… - Proceedings of the …, 2015 - National Acad Sciences
Arctic permafrost soils store large amounts of soil organic carbon (SOC) that could be
released into the atmosphere as methane (CH4) in a future warmer climate. How warming …

Contribution of dissolved organic nitrogen from rivers to estuarine eutrophication

SP Seitzinger, RW Sanders - Marine Ecology Progress Series, 1997 - int-res.com
The bioavailibility of dissolved organic nitrogen (DON) in river water entering estuaries was
examined for the Delaware and Hudson Rivers, USA. Water collected from above the …

Planktonic grazers are a potentially important source of marine dissolved organic carbon

SL Strom, R Benner, S Ziegler… - Limnology and …, 1997 - Wiley Online Library
A series of laboratory experiments was performed to measure dissolved organic carbon
(DOC) production during herbivorous grazing by heterotrophic protists (ciliate …

Food web paradigms: the biochemical view on trophic interactions

DC Müller‐Navarra - International Review of Hydrobiology, 2008 - Wiley Online Library
Different metabolic pathways and requirements can lead to imbalances in the biochemical
composition, eg, between prokaryotes and eukaryotes and between heterotrophic and …