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All Journal Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Journal of Ekonomics, Finance, and Management Studies
Dilla Andini
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Religion Earth & Planetary Sciences Economics, Econometrics & Finance

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THE ABUNDANCE OF POISONOUS BENTHIC DINOFLAGELLATE IN SEAWEED Sargassum sp IN MALANG RAPAT WATERS BINTAN REGENCY RIAU ISLANDS PROVINCE Dilla Andini; Irvina Nurrachmi; Yusni Ikhwan Siregar
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

ABSTRACT Dinoflagellates are phytoplankton which, besides being planktonic, are also benthic which live in association with seagrasses, macroalgae, coral fractures and sand. Dinoflagellates acts as a primary producer in waters. This research was carried out in Mei 2018 in the waters of Malang Rapat Village, Bintan Regency, Riau Islands Province. This study aims to determine the concentration of nitrates and phosphates in the waters, to find out the abundance of toxic benthic dinoflagellates on Sargassum sp seaweed and to see the relationship of nitrate and phosphate concentrations with the abundance of toxic benthic dinoflagellates. The research method used is a survey method in which the sampling location is determined by purposive sampling. Measurements of water quality were carried out directly in place and further research in laboratory which consisting of physical and chemical parameters of the waters. In the study found 3 genus of toxic dinoflagelates, namely Prorocentrum, Gambierdiscus and Ostreopsis. The highest dinoflagellate abundance at station 3 was 302,279 cells/g and the lowest at station 4 was 133,529 cells/g. The results of simple linear regression analysis between nitrate concentration has a positive relationship to dinoflagellate abundance with the regression equation y = 187.4 + 317.8 x and the results of simple linear regression analysis between phosphate concentration have a negative relationship to the abundance of dinoflagellates with the regression equation y = 207 , 5 -206,3 x. Key Word : Dinoflagellate, Sargassum sp, Abundance, Malang Rapat 
Determinan Tingkat Pengangguran Terbuka di Kabupaten/Kota Provinsi Jawa Barat Tahun 2019-2023 Dilla Andini; Reikha Habibah Yusfi
El-Mal: Jurnal Kajian Ekonomi & Bisnis Islam Vol. 6 No. 3 (2025): El-Mal: Jurnal Kajian Ekonomi & Bisnis Islam
Publisher : Intitut Agama Islam Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47467/elmal.v6i3.7225

Abstract

Indonesia is one of the developing countries that cannot be separated from the problem of unemployment, the number of residents who have increased every year has an unfavorable impact if not balanced with quality. The increase in population must be balanced with the quality and ability of each workforce. The average Open Unemployment Rate (TPT) in Indonesia has decreased every year, but the problem of unemployment is still the center of attention. Java Island has a higher population density and is still a favorite place for migrants to find work. West Java Province is among the five provinces with the highest TPT in Indonesia. The purpose of this study is to identify the factors that cause the existing problems and determine the variables that can be used to solve the problem of high unemployment in the districts/cities of West Java Province. This research uses multiple linear regression analysis method. The results of this study indicate that the variables of Economic Growth (PE) and Labor Force Participation Rate (TPAK) have a negative and significant influence on the TPT in the district / city of West Java Province. Simultaneously, the variables of economic growth, TPAK, MSE and HLS affect the TPT in the districts/cities of West Java Province. The coefficient of determination (R2) of this research model is 0.8693 or equivalent to 86.93%. Independent variables consisting of PE, TPAK, MSE, and HLS are able to explain the TPT variable in the district / city of West Java Province by 86.93%. While 13.07% is explained by other variables that are not explained in the study.
Co-Authors Irvina Nurachmi Reikha Habibah Yusfi Yusni Ikhwan Siregar