Title: Benthic aquatic biotal monitor

Abstract: The specification discloses a benthic aquatic biotal monitor for monitoring the chronic impact of pollution, such as industrial and municipal wastes, of aquatic environments upon in situ samples of benthos. The monitor includes a base portion including containers for retaining benthic sample and having a horizontal permeable bottom wall and water permeable vertical side walls. A water permeable mesh is attached to and extends above the base portion to form a conical-shaped enclosure decreasing in cross-sectional area from one end to the other end. The larger end of the conical-shaped enclosure is secured to the base portion and opens thereinto. The smaller end of the conical-shaped portion is closed. The conical-shaped enclosure and the base portion include apertures therethrough with dimensions for retaining benthic samples while permitting the free exchange of ambient water between the outside of the conical-shaped enclosure and the inside of the conical-shaped enclosure to monitor the impact of changing aquatic environments on the benthic sample.

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Inventors: Pequegnat, Willis E. (College Station, TX, US)

Application Number: 826052
Filing Date: 1977-08-19
Publication_date: 1979-08-14
Assignee: TerEco Corporation (College Station, TX)
Primary Class(es): 119/200 43/7, 119/204, 119/215
Other Classes:
US Patent Ref:

721913	Mar, 1903	Palmer	43/100.
731398	Jun, 1903	Watson	43/100.
1223851	Apr, 1917	Carter	43/105.
1903276	Mar, 1933	Yanga	43/100.
2163973	Jun, 1939	Benca et al.	43/100.
2921397	Jan, 1960	Luthi	43/7.
3337982	Aug, 1967	Sajulan	43/65.
3795073	Mar, 1974	Olsen	43/105.
3821861	Jul, 1974	Jalbert	43/65.

Other Refs:
Primary Examiner: Chamblee, Hugh R.
Assistant Examiner:
Attorney: Richards, Harris & Medlock