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Gastropod community structure in seagrass ecosystems in North Minahasa Ganges waters
Sitanggang, G.R.; Rangan, J.K.; Moningkey, R.D.; Lalita, J.D.J.; Schaduw, J.N.W. (2021). Gastropod community structure in seagrass ecosystems in North Minahasa Ganges waters. Jurnal Ilmiah "PLATAX" 9(2): 304-313
In: Jurnal Ilmiah "PLATAX". Universitas Sam Ratulangi: Manado. e-ISSN 2302-3589
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| Trefwoord |
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| Author keywords |
Density; Diversity; Dominance; Environmental |
| Auteurs | | Top |
- Sitanggang, G.R.
- Rangan, J.K.
- Moningkey, R.D.
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- Lalita, J.D.J.
- Schaduw, J.N.W.
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| Abstract |
The purpose of this study was to determine the types of gastropods in the seagrass ecosystem in the waters of Gangga I Village, North Minahasa Regency through Species Density, Relative Density, Diversity and Dominance in the waters of Gangga I Village, North Minahasa Regency. The results of the study obtained 126 individuals consisting of 13 species (7 genera) from 7 families (3 orders). The results of the analysis of the gastropod community structure showed that the highest species density value was at point 1 of 1.67 ind/m², followed by point 2 of 1.43 ind/m² and the lowest was at point 3 of 1.20 ind/m². The low density of gastropods at the 3 points is assumed to be caused by the environmental conditions in which they live, food sources, and fishing activities carried out by the local community. The relative density value of species with the highest percentage is at point 3, namely, the species Nassarius albescens 0.167% and the species with the lowest percentage is at point 1, namely the species Xenoturris millepunctata 0.020%. The diversity index value which includes the high criteria is at point 1 of 3.25, while the diversity value which includes the medium criteria is at point 2 of 2.87 and point 3 of 2.42. The dominance value obtained from the analysis ranges from C = 0.09 to 0.12 which is classified as low. while the value of diversity which includes the medium criteria is at point 2 of 2.87 and point 3 of 2.42. The dominance value obtained from the analysis ranges from C = 0.09 to 0.12 which is classified as low. while the value of diversity which includes the medium criteria is at point 2 of 2.87 and point 3 of 2.42. The dominance value obtained from the analysis ranges from C = 0.09 to 0.12 which is classified as low. |
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