Rodnie William Petrus (2005) The diversity of benthic macroinvertebrates according to zonation (tidal movement in a tropical mangrove area, Mengkabong Lagoon, Tuaran. Universiti Malaysia Sabah. (Unpublished)
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Abstract
A preliminary baseline study on the diversity of benthic macroinvertebrates (BMI) according to zonation (tidal movements) was carried out in a tropical mangrove area, Mengkabong lagoon, Tuaran. The overall objective is to assess the suitability of the BMI as bioindicators for the health of tropical mangrove areas. The immediate objectives are: to identify and classify the BMI under mangroves in the Mengkabong lagoon; to estimate the abundance, diversity, evenness and species richness of BMI at various stations; and to compare the diversity of BMI with respect to different environmental variables. Sampling trips had been carried out bimonthly in August, September and November 2004. Samples from 10 stations were collected by using a van Veen grab. Due to time constraint, samples from 6 stations for August had been analyzed. A total of 1834 individuals and 87 species from 5 groups were collected and identified. In terms of number of species, Polychaeta was the dominant group (48 species), followed by Crustacea (15 species) and Mollusca (13 species). The others were Nematoda (3 species) and unidentified (8 species). For the first sampling trip (7 August 2004), the species diversity index, species richness index and evenness ranged from 1.98 - 2.92, 2.16 - 6.49 and 0.44 - 0.65 respectively. For the second sampling trip (30 August 2004), the species diversity index, species richness index and evenness index ranged from 1.05 - 3.08, 1.22 - 6.30 and 0.24 - 0.69 respectively. There were significant differences for turbidity (Kruskal-Wallis, p<0.05), dissolved oxygen, course organic matter and fine organic matter (one-way ANOVA, p<0.05) between stations. Organic matter and sediment texture were considered as the influence factors for BMI community. BMI community does have the potential as bioindicator for the health of tropical mangroves but more studies need to be done to determine its potential and applications.
| Item Type: | Academic Exercise |
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| Keyword: | diversity, benthic macroinvertebrates (BMI), tidal movement, health, tropical mangrove areas, sediment texture, Organic matter, bioindicator |
| Subjects: | Q Science > QH Natural history > QH301-705.5 Biology (General) |
| Department: | SCHOOL > School of Science and Technology |
| Depositing User: | SITI AZIZAH BINTI IDRIS - |
| Date Deposited: | 15 Jan 2015 13:42 |
| Last Modified: | 24 Oct 2017 11:27 |
| URI: | https://eprints.ums.edu.my/id/eprint/10356 |
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