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All Journal Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Jurnal Perikanan dan Kelautan Biocelebes
Lumban Nauli Lumban Toruan
Universitas Nusa Cendana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Environmental Science

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The Spatial Composition of Beach Litter in North Central Timor Regency, East Nusa Tenggara Province, Indonesia Rizki Bonbalan; Lumban Nauli Lumban Toruan; Ismawan Tallo; Suprabadevi Ayumayasari Saraswati
Jurnal Kelautan Vol 15, No 3: Desember (2022)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v15i3.15493

Abstract

ABSTRACTMarine litter is currently an environmental problem that has become a global issue and attracts everyone's attention because it has a significant negative impact on the marine and coastal environment. One of the concerns at this time is the amount of marine litter in coastal areas. The purpose of this study is to determine the type and composition of waste on the beach. This study was conducted on nine coastal beaches of the North Central Timor Regency in August 2020. The sampling technique was used by adapting the Guidelines on Survey and Monitoring of Litter method. Sampling was carried out by drawing a line 100 m long parallel to the coast and a transect width of 10 m from land to sea with sampling boundaries, namely dunes, vegetation and anthropogenic activities. The results of the study show that the composition of plastic waste is 79,7%, paper and cardboard 3,5%, foam and cork 2,7%, cloth 1,8%, glass and ceramics 1,6%, rubber 2,6%, wood 1,9%, metal 1%, and others 5,3%. The category of litter that dominates the entire study beach is plastic.Keywords: Beach, litter, plastic, North Central Timor Regency, Timor Leste
COMPOSITION AND AMOUNT OF MARINE DEBRIS DISTRIBUTED TO MANGROVE ECOSYSTEMS IN KUPANG CITY, EAST NUSA TENGGARA, INDONESIA lumban nauli lumban toruan; Selviana Mboro; Lady Cindy Soewarlan
Biocelebes Vol. 16 No. 2 (2022)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/bioceb.v16i2.16061

Abstract

The unique mangrove root system is a gathering place for small and large waste. The density of the population results in varied activities so that the waste produced in various types, quantities and sizes can be distributed to the mangrove area either through rivers or carried by the wind. The purpose of this study was to determine the type and amount of waste in the mangrove ecosystem in Kupang City. The method used is observation. Sampling was carried out by installing a transect perpendicular to the sea along 70 m at the place with the highest abundance of waste and the thickness of the mangrove reached 50-100 meters. There are 6 transects installed at the study site and each transect is divided into three zones consisting of three quadrants with a size of 30 x 10 m2. The distance between quadrants is 20 m with the first quadrant being at the first point where mangroves are found. The results of the study found that the composition of the types of waste scattered in the mangrove ecosystem of Kupang City were 88,91% plastik with a total of 15,628 pieces, cloth (4,21%) with a total of 640 pieces, other waste (3,97%) with a total of 604 pieces, cork/foam (1,18%) with a total of 148 pieces, rubber (0,57%) with a total of 86 pieces, metal (0,29%) with a total of 44 pieces, glass and ceramics (0,15%) with a total of 11 pieces, then paper and cardboard (0,05%) with a total of 7 pieces. Types of plastic waste, fabrics, others, rubber and metal have a greater amount in the first zone, cork / foam is the most in the second zone then paper and cardboard are most found in the first and third zones, while glass and ceramics are the most in zone three.
DINAMIKA POPULASI IKAN KEMBUNG LELAKI (Rastrelliger kanagurta) DI TELUK KUPANG, PROVINSI NUSA TENGGARA TIMUR, INDONESIA Restituta Kurnia; Yahyah yahyah; Lumban Nauli Lumban Toruan
Jurnal Perikanan dan Kelautan Vol 13, No 1 (2023)
Publisher : JURNAL PERIKANAN DAN KELAUTAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jpk.v13i1.21368

Abstract

Indian mackerel (Rastrelliger kanagurta) in the waters of Kupang Bay is part of the wealth of biological resources that the population needs to be maintained in order to be sustainable. The rate of exploitation Indian mackerel fish is due to the large market demand and high levels of consumption, causing many fishermen to carry out continuous fishing. This research aims to analyze Indian mackerel fishstock as a basis for policies for fisheries management in the waters of Kupang Bay. The research was conducted in September 2022. Total sample of fish was 150. The data collected includes length and total weight. Data analyzed used Microsoft Excel and FISAT II software. The results of the analysis of the long-weight relationship between male and female mackerel showed that the growth pattern was negatif allometric with estimated of growth parameters L∞ = 28.40 cm, K = 0.51 years, and t0 = -0.32 years. The total mortality rate (Z) was 4,68, the natural mortality rate (M) was 1,17, the mortality rate from fishing (F) was 3,5, and the exploitation rate (E) was 0,75 per year.
Co-Authors Lady Cindy Soewarlan, Lady Cindy Restituta Kurnia Rizki Bonbalan Selviana Mboro Suprabadevi Ayumayasari Saraswati Yahyah yahyah