The Effects of Mangrove Ecosystem on Mud Crabs (Scylla serrata) in East Lombok, Indonesia

Authors

Bintang Prayoga , Dietriech Geoffrey Bengen , I Wayan Nurjaya , Nyoman Metta N. Natih

DOI:

10.29303/jppipa.v11i4.10709

Published:

2025-04-30

Issue:

Vol. 11 No. 4 (2025): April: In Progress

Keywords:

East Lombok, Mangrove ecosystem, Population dynamics, Scylla serrata, Mud crab

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Prayoga, B., Bengen, D. G., Nurjaya, I. W., & Natih, N. M. N. (2025). The Effects of Mangrove Ecosystem on Mud Crabs (Scylla serrata) in East Lombok, Indonesia. Jurnal Penelitian Pendidikan IPA, 11(4), 516–526. https://doi.org/10.29303/jppipa.v11i4.10709
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Abstract

Mangrove ecosystems play a crucial role in supporting the survival and growth of mud crabs (Scylla serrata) by providing shelter, breeding grounds, and food sources. This study aims to analyze the relationship between mangrove diversity and density with the population dynamics of S. serrata in East Lombok, Indonesia. The research was conducted across three study sites: Jerowaru, Seruni Mumbul, and Sugian, using purposive sampling to determine mangrove and crab distribution. Data were collected through vegetation analysis and crab sampling using line transects and quadrat plots. The findings indicate that Jerowaru has the highest mangrove density, reaching 1,233 plants/ha, dominated by Rhizophora mucronata (800 plants/ha). Seruni Mumbul has the highest species diversity, with nine species recorded, while Sugian, despite experiencing degradation, still supports significant S. serrata populations with a total density of 42 individuals/100m². Correspondence Analysis (CA) reveals that juvenile crabs are more associated with Avicennia officinalis at low density (<10 plants), Sonneratia alba at medium density (10–15 plants), and Rhizophora mucronata at high density (>15 plants). Meanwhile, adult S. serrata are strongly linked to high-density Rhizophora mucronata and Sonneratia alba (>15 plants).

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Author Biographies

Bintang Prayoga, IPB University

Dietriech Geoffrey Bengen, IPB University

I Wayan Nurjaya, IPB University

Nyoman Metta N. Natih, IPB University

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