Plant and Gastropods Zonation in Sungai Sejaie Mangrove, Sarawak.
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THE SARAWAK MUSEUM JOURNAL |
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Title :
Plant and Gastropods Zonation in Sungai Sejaie Mangrove, Sarawak. |
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Author :
Shabdin Mohd. Long & Hidir Marzuki |
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Abstract:
Plant and gastropodswere studied in Sungai Sejaie mangrove forest Pendam, Sarawak to determine their zonations. The transect line was established from highto low tide levels. Plants and gastropods found in the transect were recorded. Similarly all gastropods found from sediment surface to up on the trees were also recorded. Plants within high tide to 150 metres transect consisted of several species, namely Derris elliptica, Nypa fruiticans, Sonneratia caseolaris, Brugueira gymnorrhiza, Acanthus ilkifolius, Rhizophora mucronata, Aegkeras comkulatum, Sonneratia alba. Avicennia marina and Exoecaria agallocha. However, Avicennta alba specieswas found to be dominant and exist .at zone within 180 to 280 metres Irom the high tide level. Sonneratia alba was found at 280 metres from the high tide level and formed the front zone in Sungai Sejaie mangrove forest. Plant zonation in the Sungai Sejaie mangrove forest is not clearly defined. Eleven species of gastropodswere identified from the Sungai Sejaie mangrove forest, namely, Thais aculeata, Cerithidea rhizophorarum, Nerita lineata, Littorina scabra, Nerita antiquata, Cerithidea obtusa, Cerithidea cingulata, Cassidula nukleus, Batillaria curningi, Littorina fasciata and Ellobium aurisjnddae. Five groups of gastropodswere found from high to low tide levels. Two groups of gastropodswere vertically zone from sediment surface up to two metres heighton the mangrove trees. The differences in horizontal and vertical zonation of gastropod in the Sungai Sejaie mangrove forest were possibly due to their different ability to withstand exposure above the water, microhabitat preferences and food availability.
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| DOI: https://doi.org/10.61507/smj22-2008-7770-12 |
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How to cite:
Shabdin Mohd. Long and Hidir Marzuki. (2008). Plant and Gastropods Zonation in Sungai Sejaie Mangrove, Sarawak. The Sarawak Museum Journal, LXV (86): 301-314 |
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References
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