Biogeochemical characteristics of coastal waters adjacent to small river-mangrove systems, East Brazil

被引:21
作者
Ovalle, ARC
Rezende, CE
Carvalho, CEV
Jennerjahn, TC
Ittekkot, V
机构
[1] Univ Estadual Norte Fluminense, Ctr Biociencias & Biotecnol, Lab Ciencias Ambientais, BR-28015620 Campos Dos Goytacazes, RJ, Brazil
[2] Univ Hamburg, Inst Biogeochem & Marine Chem, D-20146 Hamburg, Germany
关键词
D O I
10.1007/s003670050107
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
This study addresses the composition of biogenic matter and the metabolic activity of coastal waters of the eastern Brazilian shelf, bordered by small river-mangrove systems. Oceanic Brazil Current waters induce oligotrophic and near to homogeneous conditions of chemical constituents along the inner shelf. The impact of small river-mangrove systems upon coastal waters is minor and of local nature. Bottom topography, coral reef habitats, and local upwelling also induce minor local spatial variability of dissolved inorganic and organic nutrients and O-2 and CO2 saturation levels in the coastal waters. Metabolic activity during the daylight period, inferred from O-2 and CO2 saturation levels, varied from slightly autotrophic to heterotrophic.
引用
收藏
页码:179 / 185
页数:7
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