caa a22 4500 465792618 CHVBK 20180323112029.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.2307/1351912 doi (NATIONALLICENCE)springer-10.2307/1351912 Rizzo William Virginia Institute of Marine Science School of Marine Science, College of William and Mary, 23062, Gloucesler Point, Virginia aut Nutrient exchanges between the water column and a subtidal benthic microalgal community [Elektronische Daten] [William Rizzo] Exchanges of nutrients between a shallow (ca. 1 m) nodiment and the water column were measured in the York River, Virginia, during 1983, using transparent and opaque plexiglass hemispheres. Exchanges of nitrate and phosphate were not significantly different between dome treatments, but ammonium release was significantly reduced within the transparent domes. Within the dark domes, ranges of hourly rates of ammonium and phosphate exchange were 21 to 364 μmol N m2 and 3 to 76 μmol P m2 while those in the transparent domes were −162 to 244 and 6 to 80, respectively. Negative values denote uptake by the sediment. Nitrate 1 nitrite exchanges averaged only 15% and 17% of the total dissolved luorganle nitrogen exchange in the dark and transparent domes, respectively. Estuarine Research Federation, 1990 Estuaries Springer-Verlag 13/3(1990-09-01), 219-226 0160-8347 13:3<219 1990 13 12237 https://doi.org/10.2307/1351912 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.2307/1351912 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Rizzo William Virginia Institute of Marine Science School of Marine Science, College of William and Mary, 23062, Gloucesler Point, Virginia aut NATIONALLICENCE 773 0- Estuaries Springer-Verlag 13/3(1990-09-01), 219-226 0160-8347 13:3<219 1990 13 12237 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer