OXYGEN PROFILES IN INTERTIDAL SEDIMENTS OF RIA FORMOSA (S PORTUGAL)

被引：45

作者：

BROTAS, V ^{[1
]}

AMORIMFERREIRA, A ^{[1
]}

VALE, C ^{[1
]}

CATARINO, F ^{[1
]}

机构：

[1] INST NACL INVEST PESCAS,P-1400 LISBON,PORTUGAL

来源：

HYDROBIOLOGIA | 1990年 / 207卷

关键词：

OXYGEN PROFILES; SEDIMENT-WATER INTERFACE; INTERTIDAL ZONES;

D O I：

10.1007/BF00041448

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

Microelectrode oxygen profiles were measured in intertidal sediments from Ria Formosa (S. Portugal), a very productive shallow coastal lagoon. Four intertidal sampling sites were selected according to different sediment characteristics. Individual profiles revealed a high degree of lateral variability on a centimeter spatial scale. Nevertheless, consistent differences were observed between oxygen profiles measured in atmosphere-exposed and inundated intertidal sediments: in organically poor sand oxygen-penetration depth varied from 3 mm in inundated cores to more than 7 mm in exposed ones, while in organically rich muddy sand and mud it remained between 0.5-2.0 mm. The oxygen input from inundated to exposed conditions was estimated for each sampling site. Semi-diurnal tidal fluctuation, leading to periodical atmospheric exposure of sediments plays a major role in the oxygenation process of intertidal zones of Ria Formosa.

引用

页码：123 / 129

页数：7

共 12 条

[1] COMPARISON OF OXYGEN MICROGRADIENTS, OXYGEN FLUX RATES AND ELECTRON-TRANSPORT SYSTEM ACTIVITY IN COASTAL MARINE-SEDIMENTS [J].