INSITU PHOSPHORUS RELEASE EXPERIMENTS IN THE WARNOW RIVER (MECKLENBURG, NORTHERN GERMANY)

被引：23

作者：

KLEEBERG, A ^{[1
]}

SCHLUNGBAUM, G ^{[1
]}

机构：

[1] UNIV ROSTOCK,DEPT BIOL,O-2500 ROSTOCK,GERMANY

来源：

HYDROBIOLOGIA | 1993年 / 253卷 / 1-3期

关键词：

RIVER SEDIMENT; PHOSPHORUS RELEASE; PHYTOPLANKTON COLLAPSE; PH; NITRATE; OXYGEN;

D O I：

10.1007/BF00050747

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

Results are presented of in situ benthic phosphorus release experiments in an undercut bank of an impounded river. Due to high sedimentation of phytoplankton biomass high oxygen consumption rates between 259.4 and 947.0 Mg O2 m-2 d-1 developed, leading to almost anaerobic conditions and phosphorus releases between 175.2 and 236.3 mgP m-2 d-1 over a period of 18 days. In a second series of experiments the water column overlying the sediment was aerated, resulting in much lower P release rates (1.1 to 32.9 mgP m-2 d-1) over a period of 30 days. The influence of pH and nitrate was studied by adjusting pH and adding NO3- to the overlying water. Increasing pH positively affected P release rates and enhanced NO3- levels led to an increase of benthic P release, too.

引用

页码：263 / 274

页数：12

共 42 条

[11] MEASURED AND MODELED EFFECTS OF TEMPERATURE, DISSOLVED-OXYGEN AND NUTRIENT CONCENTRATION ON SEDIMENT-WATER NUTRIENT EXCHANGE [J].