2024-03-28T15:24:12Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/586352018-08-07T10:49:41Zcom_10261_132com_10261_8col_10261_385
00925njm 22002777a 4500
dc
Agawin, Nona S. R.
author
Tovar-Sánchez, Antonio
author
Stal, L. J.
author
Álvarez, Marta
author
Agustí, Susana
author
Duarte, Carlos M.
author
2011
The abundance and nitrogen fixation rates of Trichodesmium sp. integrated down to the deep chlorophyll maximum as well as nitrogen fixation rates in size-fractionated discrete surface water samples were measured across the Mediterranean Sea. The abundance of Trichodesmium sp. was generally low (<50 trichomes m-3), except at one station in the Tyrrhenian Sea where the water temperature was <20°C and Trichodesmium sp. was present at a higher density (ca. 700 trichomes m-3). Across the basin, size-fractionated nitrogen fixation rates were low (<250 nmol N2 m-3 h-1). The highest rate was measured at a station characterized by relatively high concentrations of total dissolved P and dissolved Fe. Highδ 15N values (8.04 ± 2.03 %o) of the particulate organic nitrogen were in accordance with the observed low water column nitrogen fixation rates across the Mediterranean Sea. © 2011 Inter-Research.
Aquatic Microbial Ecology 64: 135- 147 (2011)
http://hdl.handle.net/10261/58635
10.3354/ame01511
Low water column nitrogen fixation in the Mediterranean Sea: Basin-wide experimental evidence