Results 31 to 40 of about 40,309 (296)

Spring thaw ionic pulses boost nutrient availability and microbial growth in entombed Antarctic Dry Valley cryoconite holes

Frontiers in Microbiology, 2014
The seasonal melting of ice entombed cryoconite holes on McMurdo Dry Valley glaciers provides oases for life in the harsh environmental conditions of the polar desert where surface air temperatures only occasionally exceed 0°C during the Austral summer ...
Jon eTelling, Alexandre M Anesio, Martyn eTranter, Andrew eFountain, Thomas eNylen, Jonathan eHawkings, Virendra B Singh, Preeti eKaur, Michaela eMusilova, Jemma L Wadham   +9 more
doaj   +1 more source

The significance of organic carbon and nutrient export from peatland-dominated landscapes subject to disturbance, a stoichiometric perspective [PDF]

, 2009
The terrestrial-aquatic interface is a crucial environment in which to consider the fate of exported terrestrial carbon in the aquatic system. Here the fate of dissolved organic carbon (DOC) may be controlled by nutrient availability.
C. Arlaud, Flowers, H., Bryant, C., H. Flowers, Arlaud, C., S. McFarlane, C. Bryant, McFarlane, S., S. Waldron, Waldron, S.   +9 more
core   +1 more source

Characterization of the rate and temperature sensitivities of bacterial remineralization of dissolved organic phosphorus by natural populations

Frontiers in Microbiology, 2012
Production, transformation, and degradation are the principal components of the cycling of dissolved organic matter (DOM) in marine systems. Heterotrophic Bacteria (and Archaea) play a large part in this cycling via enzymatic decomposition and ...
Angelicque E. White, Katie eWatkins-Brandt, Morgan eEngle, Brian eBurkhardt, Adina ePaytan   +4 more
doaj   +1 more source

The effect of pH, dissolved humic substances, and ionic composition on the transfer of iron and phosphate to particulate size fractions in epilimnetic lake water. [PDF]

, 1994
Transformations of dissolved iron and phosphate to particulate material (>0.2 \mu m) were investigated by adding ^55 FeCl_3, and ^32 PO_4^3- to pH adjusted epilimnetic lake water samples of contrasting ionic strengths and dissolved humic substances ...
Peter J. Shaw, Shaw, Peter J.
core   +1 more source

Multi-pumping flow system for the determination of dissolved orthophosphate and dissolved organic phosphorus in wastewater samples [PDF]

Analytica Chimica Acta, 2006
A multi-pumping flow system (MPFS) for the spectrophotometric determination of dissolved orthophosphate and dissolved organic phosphorus in wastewater samples is proposed. The determination of orthophosphate is based on the vanadomolybdate method. In-line ultraviolet photo-oxidation is employed to mineralise organic phosphorus to orthophosphate prior ...
Pons, Carmen, Tóth, Ildikó V., Rangel, António O. S. S., Forteza, Rafael, Cerdà, Víctor   +4 more
openaire   +4 more sources

Fluvial transport of suspended sediment and organic carbon during flood events in a large agricultural catchment in southwest France. [PDF]

, 2011
Water draining from a large agricultural catchment of 1 110 km2 in southwest France was sampled over an 18-month period to determine the temporal variability in suspended sediment (SS) and dissolved (DOC) and particulate organic carbon (POC) transport ...
Alexandra Coynel, Oeurng, Chantha, Sánchez-Pérez, J.M., Chantha Oeurng, Sanchez-Pérez, José Miguel, Simeoni-Sauvage, Sabine, Eric Maneux, Coynel, Alexandra, Maneux, Eric, Etcheber, Henri, Henri Etcheber, Sabine Sauvage, José-Miguel Sánchez-Pérez   +12 more
core   +1 more source

Biogeochemical cycling and phyto- and bacterioplankton communities in a large and shallow tropical lagoon (Términos Lagoon, Mexico) under 2009–2010 El Niño Modoki drought conditions [PDF]

Biogeosciences, 2017
The 2009–2010 period was marked by an episode of intense drought known as the El Niño Modoki event. Sampling of the Términos Lagoon (Mexico) was carried out in November 2009 in order to understand the influence of these particular environmental ...
P. Conan, M. Pujo-Pay, M. Agab, L. Calva-Benítez, S. Chifflet, P. Douillet, C. Dussud, R. Fichez, C. Grenz, F. Gutierrez Mendieta, M. Origel-Moreno, A. Rodríguez-Blanco, C. Sauret, T. Severin, M. Tedetti, R. Torres Alvarado, J.-F. Ghiglione   +16 more
doaj   +1 more source

Seasonal cycling of phosphorus in the Southern Bight of the North Sea [PDF]

Biogeosciences, 2005
We have investigated the seasonal cycle of nutrients, chlorophyll a, dissolved organic nitrogen (DON), and dissolved and particulate organic carbon (DOC and POC) for 10 stations in the Belgian coastal zone.
C. van der Zee, L. Chou
doaj  

Enhanced rates of particulate organic matter remineralization by microzooplankton are diminished by added ballast minerals [PDF]

, 2013
To examine the potentially competing influences of microzooplankton and calcite mineral ballast on organic matter remineralization, we incubated diatoms in darkness in rolling tanks with and without added calcite minerals (coccoliths) and ...
Le Moigne, F.A.C., De La Rocha, C., De La Rocha, C. L., de La Rocha, Christina, L., Le Moigne, F., M. Gallinari, Le Moigne, Frédéric A.C., Laurenceau, E., C. L. De La Rocha, Gallinari, Morgane, F. A. C. Le Moigne, Le Moigne, Frederic A. C., Le Moigne, F. A. C., E. Laurenceau, De La Rocha, C.L., Gallinari, M.   +15 more
core   +1 more source

ASSESSMENT OF ORGANIC PHOSPHORUS DISTRIBUTION IN THE SEDIMENT AND WATERS OF LANGAT RIVER

Biotropia: The Southeast Asian Journal of Tropical Biology
ARTICLE HIGLIGHTS - Langat River water and sediment quality deteriorate toward downstream. - Dissolved organic phosphorus increases near agricultural areas. - Sediment phosphate retention dominated by non-labile organic phosphorus.
Micheal Charles Rajaram, Muskhazli Mustafa, Nor Azwady Abd Aziz, Noor Haza Fazlin Hashim, Bashirah Mohd Fazli, Bilyaminu Garba Jega   +5 more
doaj   +1 more source