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Godwin Latuputty
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Earth & Planetary Sciences

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DISTRIBUTION OF BENTHIC FORAMINIFERA IN THE WATERS FROM OFF PUTRI ISLAND, NORTHERN BATAM, RIAU ARCHIPELAGO Resti Samyati Jatiningrum; Anggun Mutika; Luli Gustiantini; Nineu Yayu Gerhaneu; Godwin Latuputty; Agustina Rosi Divina
BULLETIN OF THE MARINE GEOLOGY Vol 37, No 2 (2022)
Publisher : Marine Geological Institute of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32693/bomg.37.2.2022.783

Abstract

Putri Island is the outermost island bordering Singapore, located north of Batam City, Riau Archipelago Province. A total of 29 sediment samples were collected from the seafloor off Putri Island for foraminiferal study. The purpose of this study is to determine their abundance and distribution related to previous data of environmental conditions. For this study, we analysed quantitative analysis of benthic foraminifera including its abundance, diversity, dominance, and evenness indices. The results denoted that benthic foraminifera was composed of 62 species that belonged to 31 genera. The diversity index was categorized as a moderate to high diversity index (1.85-3.12), with a low to high evenness index (0.37 – 0.78), and a low dominance index (0.05-0.24). This indicates that in general the waters of Putri Island are considered to have a fairly good environment and are quite stable for foraminiferal growth. A slight environmental stability degradation occurred in the north eastern part of the study area which demonstrates high levels of pollutants in the waters. This situation influent the benthic assemblages which are indicated by lowering index diversity at that location.
EXPLORING MARINE GEOLOGY AND OCEANOGRAPHY IN MANGGAR WATERS: A PRELUDE TO THE BURGEONING BELITONG GEOPARK F.X. Harkins H. Prabowo; Luli Gustiantini; Marina I. Siti; Fauzi Budi Prasetio; Yuli Yulianah; Catur Purwanto; Yusuf Adam Priohandono; Sonny Mawardi; Godwin Latuputty; Prisca Ayu Wastuwidyarani; Adi C. Sinaga; Swasty Aninda Piranti; Ferry Siboro; Agus Subekti; Sahudin Sahudin
BULLETIN OF THE MARINE GEOLOGY Vol 38, No 2 (2023)
Publisher : Marine Geological Institute of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32693/bomg.38.2.2023.859

Abstract

A survey on marine geology and oceanography was conducted in Manggar Waters, East Belitung, in order to protect the geological heritage of the newly inaugurated Belitong UNESCO Global Geopark (UGGp) in 2021. This study is aimed at understanding the characteristics of the seabed, marine sediments, currents, and coastal features in the area. A bathymetrical survey was done using an Echotrac echosounder to measure water depths, and current measurements were taken with an Infinity device. Forty sediment samples were collected and analyzed for their characteristics. The coastal features were examined through direct observation, and an unmanned aerial vehicle (UAV) drone was used to investigate the morphology of small islands. The results showed that the seabed was mainly composed of coarse sediments, such as sand and clayey sand, with some areas containing gravel near Buku Limau Island. The microfauna foraminifera analysis indicated a relatively low diversity, with Operculina and Amphistegina being the dominant species. Two types of beaches were recognized: the northern part, consisting of rocky beaches made of igneous rocks, and the southern part, which has flat beaches made of beach alluvium deposits. Abrasion was found to be dominant in the southern part, particularly at Tambak Beach. The study provides valuable information for the planning and management of marine areas in the Belitong Geopark. It also highlights the importance of preserving and protecting the geological heritage of the region. With this newfound knowledge, stakeholders can make cognizant decisions to ensure the conservation of the Belitong Geopark and its unique geological features.
Co-Authors Adi C. Sinaga Agus Subekti Agustina Rosi Divina Anggun Mutika Catur Purwanto F.X. Harkins H. Prabowo Fauzi Budi Prasetio Ferry Siboro Luli Gustiantini Luli Gustiantini Marina I. Siti Nineu Yayu Gerhaneu Prisca Ayu Wastuwidyarani Resti Samyati Jatiningrum Sahudin Sahudin Sonny Mawardi Swasty Aninda Piranti Yuli Yulianah Yusuf Adam Priohandono