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Abdul Syukur
Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Mataram, Mataram
Agriculture, Biological Sciences & Forestry Computer Science & IT Public Health

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Keanekaragaman dan Pola Sebaran Moluska (Gastropoda dan Bivalvia) yang Berasosiasi Pada Ekosistem Mangrove di Pesisir Selatan Lombok Timur Wayan Pasek Eka Sedana Putra; Abdul Syukur; Didik Santoso
JURNAL SAINS TEKNOLOGI & LINGKUNGAN 2021: Special Issue, Oktober 2021
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v0i0.274

Abstract

Mangrove ecosystems have an important role in coastal areas. Mangroves have a function as a shelter, foraging for food, and breeding various aquatic biota. Damage to mangrove forests can cause the service of mangrove ecosystems to decrease, especially for mollusk life. Mollusks are one of the associated biotas of mangroves whose life is influenced by mangrove forests. Therefore, the purpose of this study was to determine the diversity of mollusks and the relationship between mollusk density and mangrove density in the mangrove ecosystem of the southern coast of East Lombok. A sampling of mollusks used the quadrate sampling method by purposive sampling by taking into account the mangrove species contained in the observation plot. The collected data were analyzed by diversity index, distribution pattern, association, and Pearson correlation coefficient. Then a simple linear regression analysis was performed with the independent variable (x) mangrove density and the dependent variable (y) mollusk density. The results of this study were the discovery of 22 species of mollusks consisting of 17 species of gastropods and five species of bivalves. The density of mollusks in the mangrove ecosystem of the southern coast of East Lombok is 44.50±2.63 ind./m2. The diversity index at the study site was classified as moderate, with a value ranging from 1.99 to 2.46. The distribution pattern of mollusks at the research site is clustered with an Id value > 1. There are eight mollusk species associated with three mangrove species from 22 mollusk species found. The linear regression equation y = 0.084x – 0.2963 with a Pearson correlation coefficient (r) 0.95 describes a strong relationship between the independent variable (x) mangrove density and the dependent variable (y) mollusk density. This study concludes that there is a significant relationship between mangrove density and mollusk density as indicated by F-hit(41.01) > F-table (7.70) and P-value (0.003) < (0.05).  
Struktur Komunitas Gastropoda pada Kawasan Mangrove Pantai Gerupuk Lombok Tengah: Community Structure Of Gastropods in The Mangrove Area Of Gerupuk Beach Central Lombok Hikmatul Hasanah; Agus Ramdani; Abdul Syukur
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 1 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i1.419

Abstract

he purpose of this study was to determine the community structure and distribution pattern of gastropod in the mangrove area of Gerupuk Beach, Central Lombok. The field survey was conducted using the quadratic transect method and free collection in October-November 2022. The purposive random sampling was used in this study. The results showed there were 591 individuals Gastropod in all stations consisted of 4 species of Gastropod 7 families, namely Assimenia brevicula, Cassidula aurifelis, Cassidula nucleus, Littoraria carnifera, Littoraria angulifera, Littoraria scabra, Nerita undata, Cerithidea alata, Cerithidea quoyii, Telescopium Telescopium, Terebralia sulcata, Terebralia sp., Chicoreus capucinus and Nassarius reevanus. The highest abundance was found at station III with a value of 1.48 individuals per m2, where the highest abundance of gastropod species was Cerithidea alata. The diversity (H ') obtained from the three stations ranged from 1.476 to 1.996 which was categorized as medium level. Evenness index (E) from of 0.559-0.756 which were in the relatively even category. Furthermore, Domination index (C) of Gastropods range from 0.255-0.355 for low dominance. Gastropod distribution patterns in the Gerupuk Beach mangrove ecosystem are clustered and uniform. It is concluded that based on the biological indices the structure of the Gastropods community in the mangrove area of Gerupuk Beach it was in normal condition.
Co-Authors Agus Ramdani Didik Santoso Hikmatul Hasanah Wayan Pasek Eka Sedana Putra