Determining the bottom soil sampling rate in shrimp ponds using variograms

In aquaculture, methods for collecting soil, that represent the mean concentrations of its constituents are not well established. We use the variogram technique to determine the distance between two locations where soil phosphorous is no longer correlated. Using this technique, we estimate that samp...

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Bibliographic Details
Published in:Aquacultural engineering 1998-06, Vol.17 (4), p.273-282
Main Authors: Ritvo, G, Sherman, M, Lawrence, A.L, Samocha, T.M
Format: Article
Language:English
Subjects:
Animal aquaculture
Animal productions
Aquaculture
Biological and medical sciences
Crustacea
Freshwater
Fundamental and applied biological sciences. Psychology
Invertebrate aquaculture
Shrimp culture
Soil sampling
Spatial statistics
Variogram
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Summary:In aquaculture, methods for collecting soil, that represent the mean concentrations of its constituents are not well established. We use the variogram technique to determine the distance between two locations where soil phosphorous is no longer correlated. Using this technique, we estimate that samples need to be taken between 15 and 20 m apart to compose a composite sample that represents the average amount of phosphorus in the soil of four Texas shrimp ponds. Broad spatial trends in phosphorus levels are observed and the trend is qualitatively common to all four ponds. The similarities among three of the four ponds suggest that the results are applicable to similarly managed shrimp ponds in Texas, and elsewhere throughout the world.
ISSN:0144-8609
1873-5614
DOI:10.1016/S0144-8609(98)00018-1