Pendekatan bayesian berhirarki untuk penganggaran indeks kepelbagaian Shannon bagi macrobenthos
Water pollution is a matter of serious concern of the authority. The level of water pollution in an ecosystem is usually measured using Shannon’s diversity index for a particular organism. In this study, the level of pollution at the Bintulu waters over time period of August 2002 to September 200...
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ukm-18412011-06-15T03:25:33Z http://journalarticle.ukm.my/1841/ Pendekatan bayesian berhirarki untuk penganggaran indeks kepelbagaian Shannon bagi macrobenthos Naeimah Mamat, Kamarulzaman Ibrahim, Abdul Aziz Bidin, Water pollution is a matter of serious concern of the authority. The level of water pollution in an ecosystem is usually measured using Shannon’s diversity index for a particular organism. In this study, the level of pollution at the Bintulu waters over time period of August 2002 to September 2006 were investigated based on Shannon’s diversity index using macro benthic organism. Sampling were done for each month from August 2002 to October 2002, and continued once every three months except for the period of February 2005 to Mac 2005. Data of diversity index for three sampling stations are computed and analyzed using Bayesian models. Time series data for each station are analyzed separately to obtain the posterior mean of diversity index for the study period. The results from individual analysis are combined using Hierarchical Bayesian model to allow for the variation between stations. When allowing for these variations, the posterior mean of diversity index for station 1 is 1.522, station 2 is 1.420 and station 3 is 1.476 and standard deviations are 0.6953, 0.6964 and 0.6974 respectively. The results show that the overall mean is 1.471 implying that the average water quality level at the project site reaches the warning level because the value is close to 1.5 since the acceptable level of diversity index indicating no pollution is between 1.5 to 3.5 Penerbit ukm 2007-07 Article PeerReviewed Naeimah Mamat, and Kamarulzaman Ibrahim, and Abdul Aziz Bidin, (2007) Pendekatan bayesian berhirarki untuk penganggaran indeks kepelbagaian Shannon bagi macrobenthos. Journal of Quality Measurement and Analysis, 3 (1). pp. 121-129. ISSN 1823-5670 http://www.ukm.my/~ppsmfst/jqma/index.html |
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description |
Water pollution is a matter of serious concern of the authority. The level of water pollution in
an ecosystem is usually measured using Shannon’s diversity index for a particular organism.
In this study, the level of pollution at the Bintulu waters over time period of August 2002 to
September 2006 were investigated based on Shannon’s diversity index using macro benthic
organism. Sampling were done for each month from August 2002 to October 2002, and
continued once every three months except for the period of February 2005 to Mac 2005. Data
of diversity index for three sampling stations are computed and analyzed using Bayesian
models. Time series data for each station are analyzed separately to obtain the posterior mean
of diversity index for the study period. The results from individual analysis are combined
using Hierarchical Bayesian model to allow for the variation between stations. When allowing
for these variations, the posterior mean of diversity index for station 1 is 1.522, station 2 is
1.420 and station 3 is 1.476 and standard deviations are 0.6953, 0.6964 and 0.6974
respectively. The results show that the overall mean is 1.471 implying that the average water
quality level at the project site reaches the warning level because the value is close to 1.5 since
the acceptable level of diversity index indicating no pollution is between 1.5 to 3.5 |
format |
Article |
author |
Naeimah Mamat, Kamarulzaman Ibrahim, Abdul Aziz Bidin, |
spellingShingle |
Naeimah Mamat, Kamarulzaman Ibrahim, Abdul Aziz Bidin, Pendekatan bayesian berhirarki untuk penganggaran indeks kepelbagaian Shannon bagi macrobenthos |
author_facet |
Naeimah Mamat, Kamarulzaman Ibrahim, Abdul Aziz Bidin, |
author_sort |
Naeimah Mamat, |
title |
Pendekatan bayesian berhirarki untuk penganggaran
indeks kepelbagaian Shannon bagi macrobenthos
|
title_short |
Pendekatan bayesian berhirarki untuk penganggaran
indeks kepelbagaian Shannon bagi macrobenthos
|
title_full |
Pendekatan bayesian berhirarki untuk penganggaran
indeks kepelbagaian Shannon bagi macrobenthos
|
title_fullStr |
Pendekatan bayesian berhirarki untuk penganggaran
indeks kepelbagaian Shannon bagi macrobenthos
|
title_full_unstemmed |
Pendekatan bayesian berhirarki untuk penganggaran
indeks kepelbagaian Shannon bagi macrobenthos
|
title_sort |
pendekatan bayesian berhirarki untuk penganggaran
indeks kepelbagaian shannon bagi macrobenthos |
publisher |
Penerbit ukm |
publishDate |
2007 |
url |
http://journalarticle.ukm.my/1841/ http://journalarticle.ukm.my/1841/ |
first_indexed |
2023-09-18T19:34:29Z |
last_indexed |
2023-09-18T19:34:29Z |
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1777405179152302080 |