KHAIRUNNISA, KHAIRUNNISA (2025) Comparative Study of Macrobenthic Structure at Integrated Multi-Thropic Aquaculture (IMTA) and Monoculture Areas at Karimunjawa National Park. Undergraduate thesis, Fakultas Sains dan Matematika.

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Abstract

Anthropogenic activities, such as aquaculture, have undeniably affect the
surrounding ecosystem. One of the affected components in ecosystem is
macrobenthic organisms. Macrobenthos is a well-known organism to be used as
biomonitoring agent and already been used in numerous publications. This study
aimed to identify the macrobenthic community structure in different aquaculture
sites and links it to environmental parameters in Karimunjawa National Park.
Purposive sampling method was used in this research, conducted in three stations:
IMTA, Monoculture, and Reference Area, with three replications at each station in
November 2021 – December 2021. The data were analyzed using Shannon-Wiener
Diversity Index (H’), Simpson’s Dominance Index (D), Pielou’s Evenness Index
(E), k-dominance curve, MDS, One-Way ANOVA, PCA, and BIO-ENV. Based on
ecological indices and k-dominance curve, Reference Area has the highest diversity
and lowest dominance, indicating a stable ecosystem. MDS ordination plot displays
clustered organism variability between each station. The result of One-Way
ANOVA analysis shows there is no significant difference of macrobenthic
community structure between three stations (Sig= .900; P<0.05). Based on PCA
result shows clustered stations mainly based on sedimentation properties, both
particle grain size and organic matter content. Analysis of BIO-ENV reveals that
coarse sand and silt as the most influential abiotic parameters towards macrobenthic
community structure (r=0.370). It can be concluded that the macrobenthic
community structure in each station has no significant difference and the most
influential abiotic parameter is the sedimentation.

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