Carbon and nitrogen content of transparent exopolymer particles (TEP) in relation to their Alcian Blue adsorption

被引:213
作者
Engel, A
Passow, U
机构
[1] Inst Meereskunde, D-24109 Kiel, Germany
[2] Univ Calif Santa Barbara, Inst Marine Sci, Santa Barbara, CA 93106 USA
关键词
transparent exopolymer particles; TEP; POC; PON; phytoplankton exudation; coagulation; carbon cycling;
D O I
10.3354/meps219001
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
The carbon and nitrogen content of transparent exopolymer particles (TEP) was determined and related to the concentration of TEP as quantified by a colorimetrical method. TEP were produced in the laboratory from dissolved precursors by laminar or turbulent shear. Dissolved precursors were obtained by 0.2 mum filtration from diatom cultures, with or without nutrient reduction, and from natural diatom populations. The relationship between carbon and TEP was significant, linear and species-specific. Carbon concentration of TEP derived from this relationship concurred with previous findings, Shortage of silicic acid or nitrate in the culture media had no effect on the carbon content of TER Molar C:N ratios of TEP were above the Redfield ratio, with a mean value of 26. It is suggested that the nitrogen fraction of TEP can be explained by adsorption of dissolved organic nitrogen (DON) onto TEP. Based on the newly established relationship, concentrations of TEP-derived carbon (TEP-C) were calculated for the Baltic Sea, the coastal Pacific, the North East Atlantic and the Northern Adriatic Sea.
引用
收藏
页码:1 / 10
页数:10
相关论文
共 53 条
[41]   Formation of transparent exopolymer particles, TEP, from dissolved precursor material [J].
Passow, U .
MARINE ECOLOGY PROGRESS SERIES, 2000, 192 :1-11
[42]   Seasonal variations of dissolved organic matter in the northern Adriatic Sea [J].
Pettine, M ;
Patrolecco, L ;
Manganelli, M ;
Capri, S ;
Farrace, MG .
MARINE CHEMISTRY, 1999, 64 (03) :153-169
[43]  
RAMUS J, 1977, J PHYCOL, V13, P345, DOI 10.1111/j.1529-8817.1977.tb02939.x
[44]  
Redfield A.C., 1963, COMPOSITION SEAWATER, V2, P26, DOI DOI 10.1007/978-94-009-7944-4_5
[45]  
Sachs L, 1992, Angewandte Statistik, V7th
[46]   CHEMICAL COMPOSITION OF SKELETONEMA-COSTATUM (GREV) CLEVE AND PAVLOVA (MONOCHRYSIS) LUTHERI (DROOP) GREEN AS A FUNCTION OF NITRATE-LIMITED, PHOSPHATE-LIMITED, AND IRON-LIMITED GROWTH [J].
SAKSHAUG, E ;
HOLMHANSEN, O .
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY, 1977, 29 (01) :1-34
[47]   Adsorption of dissolved free amino acids on colloidal DOM enhances colloidal DOM utilization but reduces amino acid uptake by orders of magnitude in marine bacterioplankton [J].
Schuster, S ;
Arrieta, JM ;
Herndl, GJ .
MARINE ECOLOGY PROGRESS SERIES, 1998, 166 :99-108
[48]   MARINE SNOW - SINKING RATES AND POTENTIAL ROLE IN VERTICAL FLUX [J].
SHANKS, AL ;
TRENT, JD .
DEEP-SEA RESEARCH PART A-OCEANOGRAPHIC RESEARCH PAPERS, 1980, 27 (02) :137-143
[49]   EVIDENCE FOR THE SEASONAL ACCUMULATION OF CARBON-RICH DISSOLVED ORGANIC MATERIAL, ITS SCALE IN COMPARISON WITH CHANGES IN PARTICULATE MATERIAL AND THE CONSEQUENTIAL EFFECT ON NET C/N ASSIMILATION RATIOS [J].
WILLIAMS, PJL .
MARINE CHEMISTRY, 1995, 51 (01) :17-29
[50]   REPORT ON DOC AND DON MEASUREMENTS MADE AT SCRIPPS-INSTITUTION-OF-OCEANOGRAPHY, 1988-1991 [J].
WILLIAMS, PM ;
BAUER, JE ;
ROBERTSON, KJ ;
WOLGAST, DM ;
OCCELLI, ML .
MARINE CHEMISTRY, 1993, 41 (1-3) :271-281