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Updated: Jul 18, 2026
06:42
Measuring Phosphorus Release in Laboratory Microcosms for Water Quality Assessment
Published on: July 22, 2019
Bioturbation-induced phosphorous release from an insoluble phosphate source
1Department of Zoology, Krishnagar Government College, Krishnagar 741101, Nadia, West Bengal, India. debajyoti_chakrabarty@yahoo.co.in
Bio Systems
|November 23, 2006
Summary
Common carp fry bioturbation significantly enhances phosphate rock fertilizer value in aquaculture. This process increases soluble reactive phosphate levels, confirming its benefit for fish farming.
Area of Science:
- Aquaculture
- Environmental Science
- Soil Science
Background:
- Phosphate rock is a key fertilizer in aquaculture.
- Bioturbation by fish can influence nutrient cycling.
- Understanding carp fry's impact on phosphate availability is crucial.
Purpose of the Study:
- To evaluate how common carp fry bioturbation affects phosphate rock's fertilizer value.
- To quantify the release of soluble reactive phosphate (SRP) due to bioturbation and fish excrement.
- To assess the cost-effectiveness of phosphate rock in fish farming.
Main Methods:
- Laboratory experiments using 5 L jars and outdoor 150 L vats.
- Introduction of common carp fry to simulate bioturbation.
- Measurement of soluble reactive phosphate (SRP) in overlying water.
Main Results:
- SRP levels were lowest in control groups.
- Common carp fry increased SRP by 0.09-0.10 mg L(-1) through excrement.
- Bioturbation led to a 64.8-90% phosphate influx from phosphate rock, significantly increasing water phosphorous.
Conclusions:
- Common carp fry bioturbation enhances the fertilizer value of phosphate rock.
- Phosphate rock application is beneficial and cost-effective in fish farming ponds.
- Bioturbation facilitates phosphorous release from apatite sources into aquaculture water.
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