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Syahrial Rial
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Earth & Planetary Sciences

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KONDISI STOMATA DAN MORFOLOGI DAUN Rhizophora apiculata PADA KAWASAN INDUSTRI PERMINYAKAN DAN NON KAWASAN INDUSTRI DI PROVINSI RIAU Syahrial Rial
Journal of Marine Research and Technology Vol 1 No 1 (2018): AGUSTUS 2018
Publisher : Department of Marine Sciences, Faculty of Marine Science and Fisheries, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (372.442 KB) | DOI: 10.24843/JMRT.2018.v01.i01.p03

Abstract

Oil spills often occur in the sea and are fatal to the mangrove ecosystems that exist on the coast. One of the effects is the occurrence of defoliation or leaf fall, where mangrove leaves yellowish, then wither and fall to the substrate. The study of stomatal and morphological conditions of Rhizophora apiculata leaves in petroleum industrial estate and the non-industrial area in Riau Province has been conducted in November – December 2014 with the aim to know the impact of oil industry development on stomata density, stomata area, and leaf surface area. Leaf samples were taken from 4 (four) different areas, namely Crude Palm Oil (CPO) oil industry, petroleum industry area, the joint industrial zone between petroleum and CPO and no area at all of its industrial estate. The leaf sampling was carried out using a line transect drawn from the reference point (the outer mangrove stand) with the direction perpendicular to the coastline to the mainland and made sample plots according to the level of the stand. Then each strand of the selected population, each taken 3 leaves and preserved with 70% alcohol. The results showed that in the oil industry, stomatal density, stomata area, and leaf area is higher when compared with non-industrial areas. Then the relationship of stomatal density with salinity, pH and redox shows that the higher the parameter, the higher the density of the stomata. So is the relationship between stomata area with pH and redox, the higher the parameter, the higher the stomata area. Keywords: leaf morphology, Rhizophora apiculata, petroleum industry, non-industrial area mangrove, Riau Province
DISTRIBUSI SPASIAL GASTROPODA Littoraria scabra DI HUTAN MANGROVE PULAU TUNDA SERANG BANTEN, INDONESIA Syahrial Rial; Nanang Karsim
Journal of Marine Research and Technology Vol 1 No 1 (2018): AGUSTUS 2018
Publisher : Department of Marine Sciences, Faculty of Marine Science and Fisheries, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (260.355 KB) | DOI: 10.24843/JMRT.2018.v01.i01.p04

Abstract

Gastropods is the most dominant molusc group in the mangrove forest. The Spatial Distribution Study of Gastropoda Littoraria scabra in the Mangrove Forest of Serang Banten Island has been conducted in January 2014. It aims to provide information on the spread of Indonesian biodiversity especially L. scabra. Data collection of L. scabra gastropods is done by making line transects and plots drawn from the reference point (the outer mangrove stand) and perpendicular to the coastline to the mainland. The line transect is made of plots with size 10 X 10 m and in the size of 10 x 10 m, a small plot of 1 x 1 m of 5 plots is created. The results showed that L. scabra gastropod was distributed evenly in the mangrove forest of Pulau Tunda Serang Banten. Then the composition and density are higher in the East (284 individu and 6.31 ind/m2) than in the South (101 individu and 2.24 ind/m2). In addition, the results also showed that the distribution pattern of L. scabra gastropod in the mangrove forest of Tunda Serang Banten Island was uniform (I? <1), indicated that L. scabra gastropod disperse evenly in it’s mangrove forest. Keywords: distribution, gastropod, Littoraria scabra, mangrove, Tunda Island, Indonesia
Pengujian dan Penentuan Spesies Gastropoda sebagai Bioindikator di Kawasan Reboisasi Mangrove Kepulauan Seribu, Indonesia Syahrial Rial; Muhammad Fauzan Isma; Ahmad ryadi; M. Ilham Fajriansyah
Journal of Marine Research and Technology Vol 3 No 1 (2020): FEBRUARI 2020
Publisher : Department of Marine Sciences, Faculty of Marine Science and Fisheries, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (565.66 KB) | DOI: 10.24843/JMRT.2020.v03.i01.p06

Abstract

The development of coastal zones throughout the world has resulted in changes in the order of the mangrove ecosystem, therefore, planting activities are carried out in various regions. The study of the testing and determination of gastropod species as bioindicators in the mangrove reforestation area was carried out in the Seribu Islands. This research aims to determine how suitable the gastropod species are used as bioindicators in assessing the success of mangrove reforestation, especially in the Seribu Islands. Collection of gastropod species is done by making line transects and plots drawn from the reference point (outermost mangrove stands) and perpendicular to the coastline to the mainland. Line transects are made of plots of size 10 x 10 m and in the size of 10 x 10 m a small plot of 1 x 1 m is made. Furthermore, testing is carried out with several criteria and analyzed using multivariate Principal Component Analysis (PCA) statistics. The results of the study show that the species Littoraria scabra has met all the specified testing criteria. Then L. scabra also has the highest eigenvalue compared to the other species, making it suitable to be used as a bioindicator species in assessing the success of the Seribu Islands mangrove reforestation.
Co-Authors Ahmad ryadi M. Ilham Fajriansyah Muhammad Fauzan Isma Nanang Karsim