A 'gilled' benthic chamber for extended measurement of sediment-water fluxes

被引：8
|
作者：
Morse, JW [1 ]
Boland, G
Rowe, GT
机构：
[1] Texas A&M Univ, Dept Oceanog, College Stn, TX 77843 USA
[2] Minerals Management Serv, Dept Interior, New Orleans, LA 70123 USA
来源：
MARINE CHEMISTRY | 1999年 / 66卷 / 3-4期
关键词：
benthic chamber; fluxes; oxygen; sediments;
D O I：
10.1016/S0304-4203(99)00032-8
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A benthic chamber has been developed that utilizes an artificial 'gill' to maintain close to ambient dissolved oxygen concentrations within the chamber. The 'gill' consists of approximately 12.8 m of silicone tubing through which chamber water is pumped by a controlled submersible peristaltic pump. Via turning this pump on and off, benthic oxygen demand can be determined at various times after deployment; ambient oxygen levels over the sediment can be manipulated so that the influences of hypoxic and anoxic conditions can be determined. Because the tubing is impermeable to charged ions. long-term deployments, at close to ambient internal oxygen levels, also make possible the measurement of fluxes of dissolved components whose fractional rate of change is much less than that of oxygen. (C) 1999 Elsevier Science B.V. AU rights reserved.
引用
收藏
页码：225 / 230
页数：6
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