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"Curah hujan di musim hujan berperan dalam mentransportasikan sampah, termasuk mikroplastik dari sungai ke laut. Peningkatan sampah, arus, dan peningkatan penduduk juga dapat memengaruhi kelimpahan mikroplastik. Mikroplastik di pesisir dapat menempel pada daun lamun. Daun lamun akan mengalami pertumbuhan, sehingga memungkinkan adanya perbedaan kelimpahan mikroplastik di sepanjang daun lamun. Penelitian ini bertujuan untuk menganalisis perbandingan kelimpahan mikroplastik pada daun Enhalus acoroides, air, dan sedimen di Pulau Lima, Teluk Banten pada musim hujan tahun 2020 dan 2021, serta menganalisis apakah ada perbedaan kelimpahan mikroplastik di sepanjang daun E. acoroides. Sampel daun diambil seluas 1 cm2 dari helaian daun, kemudian dikerik menggunakan cutter. Sampel air sebanyak 20 L diambil menggunakan plankton net. Sampel sedimen sebanyak 200 g dikeringkan menggunakan oven. Rata-rata kelimpahan mikroplastik pada sampel daun lamun tahun 2020 sebesar 46,96±3,13 partikel/cm2, dan tahun 2021 sebesar 61,5±6,63 partikel/cm2. Sampel air tahun 2020 sebesar 130,66±14,19 partikel/L, sedangkan 2021 sebesar 162,22±7,82 partikel/L. Sampel sedimen tahun 2020 sebesar 12.066±4.017,6 partikel/Kg, sedangkan 2021 sebesar 17.354,67±2.341,95 partikel/Kg. Terdapat peningkatan kelimpahan mikroplastik pada semua sampel di Pulau Lima, Teluk Banten saat musim hujan tahun 2020 hingga 2021. Rata-rata kelimpahan mikroplastik pada jarak 20 cm dari pangkal daun sebanyak 36,7±7,8 partikel/cm2 lebih rendah daripada jarak 50 cm sebanyak 144,4±23,74 partikel/cm2. Terdapat perbedaan kelimpahan mikroplastik di sepanjang daun lamun.

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Rainfall in the rainy season plays a role in transporting waste, including microplastics from rivers to the sea. Increased waste, currents, and population growth can also affect the abundance of microplastics. Microplastics on the coast are attached to seagrass leaves. Seagrass leaves experienced growth, thus allowing for differences in the abundance of microplastics along with the leaves. This study aims to analyze the comparison of the abundance of microplastics in Enhalus acoroides leaves, water, and sediment on Lima Island, Banten Bay in the rainy seasons of 2020 and 2021, and analyze whether there are differences in the abundance of microplastics along with E. acoroides leaves. The leaves were taken 1 cm2 from the leaf blade, then scraped using a cutter. The water (20 L) was taken using a plankton net. The sediment (200 g) was dried using an oven. The average abundance of microplastics in seagrass leaf samples in 2020 was 46.96±3.13 particles/cm2, while in 2021 was 61.5±6.63 particles/cm2. The water sample in 2020 was 130.66±14.19 particles/L, while in 2021 was 162.22±7.82 particles/L. The sediment sample in 2020 was 12,066±4,017.6 particles/Kg, while in 2021 was 17,354.67±2,341.95 particles/Kg. There was an increase in the abundance of microplastics in all samples on Lima Island, Banten Bay during the rainy season from 2020 to 2021. The average abundance of microplastics at a distance of 20 cm from the base of the leaf was 36.7±7.8 particles/cm2, lower than a distance of 50 cm at 144.4±23.74 particles/cm2. There were differences in the abundance of microplastics along with the seagrass leaves."

"Curah hujan di musim hujan berperan dalam mentransportasikan sampah, termasuk mikroplastik dari sungai ke laut. Peningkatan sampah, arus, dan peningkatan penduduk juga dapat memengaruhi kelimpahan mikroplastik. Mikroplastik di pesisir dapat menempel pada daun lamun. Daun lamun akan mengalami pertumbuhan, sehingga memungkinkan adanya perbedaan kelimpahan mikroplastik di sepanjang daun lamun. Penelitian ini bertujuan untuk menganalisis perbandingan kelimpahan mikroplastik pada daun Enhalus acoroides, air, dan sedimen di Pulau Lima, Teluk Banten pada musim hujan tahun 2020 dan 2021, serta menganalisis apakah ada perbedaan kelimpahan mikroplastik di sepanjang daun E. acoroides. Sampel daun diambil seluas 1 cm2 dari helaian daun, kemudian dikerik menggunakan cutter. Sampel air sebanyak 20 L diambil menggunakan plankton net. Sampel sedimen sebanyak 200 g dikeringkan menggunakan oven. Rata-rata kelimpahan mikroplastik pada sampel daun lamun tahun 2020 sebesar 46,96±3,13 partikel/cm2, dan tahun 2021 sebesar 61,5±6,63 partikel/cm2. Sampel air tahun 2020 sebesar 130,66±14,19 partikel/L, sedangkan 2021 sebesar 162,22±7,82 partikel/L. Sampel sedimen tahun 2020 sebesar 12.066±4.017,6 partikel/Kg, sedangkan 2021 sebesar 17.354,67±2.341,95 partikel/Kg. Terdapat peningkatan kelimpahan mikroplastik pada semua sampel di Pulau Lima, Teluk Banten saat musim hujan tahun 2020 hingga 2021. Rata-rata kelimpahan mikroplastik pada jarak 20 cm dari pangkal daun sebanyak 36,7±7,8 partikel/cm2 lebih rendah daripada jarak 50 cm sebanyak 144,4±23,74 partikel/cm2. Terdapat perbedaan kelimpahan mikroplastik di sepanjang daun lamun.

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Rainfall in the rainy season plays a role in transporting waste, including microplastics from rivers to the sea. Increased waste, currents, and population growth can also affect the abundance of microplastics. Microplastics on the coast are attached to seagrass leaves. Seagrass leaves experienced growth, thus allowing for differences in the abundance of microplastics along with the leaves. This study aims to analyze the comparison of the abundance of microplastics in Enhalus acoroides leaves, water, and sediment on Lima Island, Banten Bay in the rainy seasons of 2020 and 2021, and analyze whether there are differences in the abundance of microplastics along with E. acoroides leaves. The leaves were taken ​​1 cm2 from the leaf blade, then scraped using a cutter. The water (20 L) was taken using a plankton net. The sediment (200 g) was dried using an oven. The average abundance of microplastics in seagrass leaf samples in 2020 was 46.96±3.13 particles/cm2, while in 2021 was 61.5±6.63 particles/cm2. The water sample in 2020 was 130.66±14.19 particles/L, while in 2021 was 162.22±7.82 particles/L. The sediment sample in 2020 was 12,066±4,017.6 particles/Kg, while in 2021 was 17,354.67±2,341.95 particles/Kg. There was an increase in the abundance of microplastics in all samples on Lima Island, Banten Bay during the rainy season from 2020 to 2021. The average abundance of microplastics at a distance of 20 cm from the base of the leaf was 36.7±7.8 particles/cm2, lower than a distance of 50 cm at 144.4±23.74 particles/cm2. There were differences in the abundance of microplastics along with the seagrass leaves. "

"Laut merupakan sumber daya dengan peran penting dalam mempertahankan produksi pangan. Namun, diperkirakan 51 triliun partikel mikroplastik tersebar di seluruh laut dunia. Polusi mikroplastik memungkinkan paparan ke manusia melalui jaring-jaring makanan karena dapat menempel pada biota laut yang edible seperti makroalga anggur laut. Penelitian pada anggur laut (Caulerpa racemosa) di Pulau Semak Daun bertujuan untuk mengetahui bentuk dan total kelimpahan mikroplastik melalui kontrol positif 10 gram sampel dalam 100 ml akuades, metode pengadukkan dengan magnetic strirrer dan metode penghancuran menggunakan NaOH. Hasil penelitian menemukan mikroplastik fiber, fragmen, film, dan foam sebanyak 10,34 partikel/gram. Penelitian ini memberi bukti bahwa mikroplastik dapat menempel ke anggur laut dan unsur abiotik di sekitarnya sehingga beresiko masuk ke rantai makanan karena dikonsumsi oleh manusia secara langsung maupun tidak langsung melalui biota laut lain.

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The ocean is a resource with an important role in maintaining global food production. However, an estimated 51 trillion microplastic particles are scattered throughout the world's oceans. Microplastic pollution allows exposure to humans through food webs because it can attach to edible marine biota such as sea grape macroalgae. Research on sea grapes (Caulerpa racemosa) in Pulau Semak Daun with objectives to determine the shape and total abundance of microplastics through positive control of 10 grams of sample in 100 ml of distilled water, stirring method with magnetic stirrer and destruction method using NaOH. The results of this research found microplastic fibers, fragments, films, and foams with the total abundance is 10.34 particles/gram. This research provides evidence that microplastics can stick to sea grapes and the surrounding abiotic elements and risk of entering the food chain because they are consumed by humans directly or indirectly through other marine biota."

"Telah dilakukan penelitian yang bertujuan untuk menganalisis bentuk dan kelimpahan mikroplastik pada air, insang, dan saluran pencernaan ikan mujair Oreochromis mossambicus dan ikan setan merah Amphilophus labiatus yang terdapat di Situ Salam, Kampus Universitas Indonesia, Depok. Sampel air diambil sebanyak 20 L lalu disaring menggunakan plankton net sampai volume air menjadi 200 ml sementara sampel ikan mujair dan ikan setan merah diambil masing-masing 10 ekor dengan jala lalu disimpan di wadah penyimpanan berisi formalin 40%. Ekstraksi sampel dilakukan di Laboratorium Biologi Kelautan, Departemen Biologi, FMIPA UI dengan metode dekstruksi oleh HNO3 65% kemudian dilakukan analisis bentuk dan kelimpahan mikroplastik di bawah mikroskop. Hasil penelitian menunjukkan, rata-rata total kelimpahan mikroplastik pada air diperoleh 153,7 ± 44,2 partikel L-1, pada saluran pencernaan ikan mujair diperoleh 2.868 ± 723,5 partikel ind-1, pada saluran pencernaan ikan setan merah diperoleh 3.548,4 ± 1031,4 partikel ind-1, pada insang ikan mujair diperoleh 3.782,6 ± 1.171,6 partikel ind-1, dan pada insang ikan setan merah diperoleh 3.848 ± 863,1 partikel ind-1. Bentuk mikroplastik yang mendominasi pada air situ, saluran pencernaan, dan insang adalah bentuk fiber. Berdasarkan hasil Uji T Dua Sampel terhadap sampel insang dan pencernaan dari ikan mujair dan ikan setan merah menunjukkan tidak ada perbedaan signifikan.

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Research has been carried out that aims to analyze the shape and microplastics in the water, gills, and digestive tract of tilapia fish Oreochromis mossambicus and red devil fish Amphilophus labiatus that found in Salam Lake, University of Indonesia Campus, Depok. Water samples were taken as much as 20 L and then filtered using a plankton net until the water volume became 200 ml while samples of tilapia fish and red devil fish were taken each with a net and stored in a storage container containing formalin 40%. Sample extraction was carried out at the Marine Biology Laboratory, Department of Biology, FMIPA UI with the destruction method by HNO3 65% and then analyzed the shape and abundance of microplastics under a microscope. The results showed that the average total abundance of microplastics in water was 153,7 ± 44,2 L-1 particles, in the digestive tract of tilapia fish it was obtained 2.868 ± 723,5 ind-1 particles, in the digestive tract of red devil fish obtained 3.548,4 ± 1.031,4 ind-1 particles, in the gills of tilapia fish obtained 3.782,6 ± 1.171,6 ind-1 particles, and in the gills of red devil fish obtained 3.848 ± 863,1 particles ind-1. The predominant form of microplastic in the water, digestive tract, and gills is the form of fiber. Based on the results of the Two-Sample T-Test on gill and digestive samples of tilapia fish and red devil fish, there is no significant difference."

"Makroalga merupakan tumbuhan yang banyak dimanfaatkan sebagai sumber makanan bagi organisme laut dan manusia. Makroalga Sargassum cinereum pada bagian permukaan thalli dapat terakumulasi oleh miktoplastik yang memiliki daya akumulasi tinggi di perairan Pulau Semak Daun. Kontaminasi mikroplastik pada bagian makroalga terjadi karena adanya akumulasi mikroplastik pada tempat tumbuh makroalga. Mikroplastik dapat menempel, melilit, maupun terbungkus oleh makroalga. Penelitian ini bertujuan untuk mengetahui bentuk, warna, dan ukuran mikroplastik dan pengaruh variasi waktu pengocokkan terhadap pengurangan kelimpahan mikroplastik pada makroalga Sargassum cinereum J. Agardh 1848. Sampel pada permukaan makroalga diambil sebanyak 10 g, kemudian diberi perlakuan pengocokkan dengan perbedaan waktu 5 menit, 10 menit, dan 15 menit dan disaring menggunakan kertas saring Whatman filter. Sampel yang menempel kuat pada makroalga dilarutkan dengan larutan NaOH, kemudian disaring menggunkan kertas Whatman filter. Sampel kontrol negatif di diamkan selama 15 menit, sedangkan kontrol positif langsung dilakukan penyaringan. Bentuk mikroplastik didominasi oleh fiber sebesar 58% dengan jumlah 36,5 partikel/g. Warna mikroplastik didominasi oleh biru sebesar 75%. Persentase pengurangan kelimpahan mikroplastik pada kelompok perlakuan tertinggi terdapat pada perlakuan pengocokkan selama 15 menit (K15) sebesar 70% dan terendah pada perlakuan kontrol negatif (KN) sebesar 45%. Uji One Way ANOVA membuktikan bahwa adanya perbedaan rata-rata kelimpahan mikroplastik pada kelompok perlakuan pengocokkan dengan nilai signifikan sebesar 0,002 (< 0,05). Waktu pengocokkan mempengaruhi pengurangan kelimpahan mikroplastik pada makroalga Sargassum cinereum.

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Macroalgae are plants that are widely used as a food source for marine organisms and humans. Sargassum cinereum macroalgae on the surface of the thalli can be accumulated by mytoplastics which have high accumulation power in the waters of Semak Daun Island. Microplastic contamination in the macroalgae section occurs due to the accumulation of microplastics in the macroalgae growing sites. Microplastics can be attached, wrapped around, or covered by macroalgae. This study aims to determine the shape, color, and size of microplastics and the effect of variations in shaking time on the reduction of microplastics in macroalgae Sargassum cinereum J. Agardh 1848. Samples on the surface of macroalgae were taken as much as 10 g, then given shaking treatment with a time difference of 5 minutes, 10 minutes, and 15 minutes and filtered using a Whatman filter paper filter. Samples that adhered strongly to macroalgae were dissolved with NaOH solution, then filtered using Whatman filter paper. The negative control sample was allowed to stand for 15 minutes, while the positive control sample was immediately assessed. The form of microplastic is dominated by fiber by 58% with a total of 36.5 particles/g. The color of microplastic is dominated by blue by 75%. The percentage of microplastic reduction in the treatment group was highest in the shaking treatment for 15 minutes (K15) by 70% and the lowest in the negative treatment (KN) 45%. The One-Way ANOVA test proved that the difference between the mean and microplastics in the shaking treatment group had a significant value of 0.002 (< 0.05). Shaking time affects the reduction of microplastic in macroalga Sargassum cinereum."

"Penelitian ini bertujuan untuk menganalisis kelimpahan beserta bentuk mikroplastik yang terakumulasi pada kerang darah Anadara granosa, air dan sedimen serta menganalisis perbedaan kelimpahan mikroplastik pada kerang darah, air, dan sedimen di Teluk Banten saat musim hujan pada tahun 2020 dan 2021. Pengambilan sampel kerang darah, air, dan sedimen dilakukan di 3 lokasi stasiun yang berbeda pada 27 Januari 2020 dan 15 Maret 2021 di musim hujan. Sampel jaringan kerang sebanyak 10 individu pada tiap stasiun dilarutkan dengan HNO3 65%. Sampel air sebanyak 20 L disaring dengan menggunakan plankton net 300 µm. Sampel sedimen diambil sebanyak 200 g dikeringkan di oven. Masing-masing sampel dijenuhkan menggunakan NaCl agar mikroplastik dapat mengapung ke atas permukaan. Masing-masing sampel (1 ml) diteteskan di atas Sedgwick Rafter Chamber untuk diamati di mikroskop dan dihitung berdasarkan bentuk partikel yang ditemui yaitu fiber, film, fragmen. Hasil penelitian menunjukan kelimpahan mikroplastik tahun 2020 yang terkandung pada air sejumlah 205,55 ± 40,63 partikel L-1, pada sedimen 179.644,44 ± 37.017,07 partikel Kg-1, dan pada jaringan kerang darah 18.657,77 ± 2.979,57 partikel Ind-1. Kelimpahan miikroplastik pada tahun 2021 lebih tinggi sejumlah 219,44 ± 40,29 partikel L-1 pada air, 208.711,11 ± 25.198,70 partikel Kg-1 pada sedimen, dan 20.913,33 ± 3.532,8 partikel Ind-1 pada jaringan kerang darah.

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This study aims to analyze the abundance and form of microplastics accumulated in the Anadara granosa blood clam, water and sediment and to analyze differences in the abundance of microplastics in blood, water, and sedimentary clams in Banten Bay during the rainy season in 2020 and 2021. Blood clams sampling, water, and sediment was carried out at 3 different station locations on 27 January 2020 and 15 March 2021 in the rainy season. 10 individual shellfish tissue samples at each station were dissolved with 65% HNO3. A sample of 20 L of water was filtered using a 300 m plankton net. Sediment samples were taken as much as 200 g and dried in the oven. Each sample was saturated using NaCl so that the microplastics could float to the surface. Each sample (1 ml) was dropped onto the Sedgwick Rafter Chamber to be observed under a microscope and calculated based on the shape of the particles encountered, namely fibers, films, fragments. The results showed that in 2020 the abundance of microplastics contained in water was 205.55 ± 40.63 L-1 particles, 179.644.44 ± 37.017.07 Kg-1 particles, and 18.657.77 ± 2.979.57 particles in blood clams. Ind-1 particles. The abundance of microplastics in 2021 is higher by 219.44 ± 40.29 L-1 particles in water, 208.711.11 ± 25.198.70 Kg-1 particles in sediments, and 20,913.33 ± 3,532.8 Ind-1 particles in tissue blood clams. "

"Keberadaan mikroplastik telah mencemari dan mengganggu perairan di wilayah Indonesia. Penelitian ini dilakukan untuk mengetahui perbandingan kelimpahan mikroplastik pada lamun Cymodocea rotundata, sedimen, dan air Pulau Rambut, Teluk Jakarta tahun 2022 dan 2023. Pengambilan sampel dilakukan di tiga stasiun Pulau Rambut (Timur, Selatan, dan Barat).  Sampel diambil sebanyak delapan individu lamun per stasiun, sedimen, dan air dengan metode random sampling. Sampel lamun dipotong sepanjang 2 cm lalu dikerik, sedimen dikeringkan lalu diberikan larutan jenuh NaCl, dan sempel air diberikan NaCl kemudian seluruh sampel diamati dibawah mikroskop. Rata-rata kelimpahan mikroplastik lamun C. rotundata pada tahun 2022 sebesar 42 partikel/cm dan pada tahun 2023 sebesar 44,46 partikel/cm. Rata-rata kelimpahan mikroplastik pada sedimen tahun 2022 sebesar 73,53 partikel/g dan pada tahun 2023 sebesar  79,56 partikel/g. Kelimpahan mikroplastik pada sampel air tahun 2022 sebesar 51,33 partikel/L dan pada tahun 2023 sebesar 53,78 partikel/L. Uji Korelasi Spearman menjelaskan bahwa kelimpahan mikroplastik sampel lamun dengan sedimen, air dengan sedimen, dan lamun dengan air memiliki korelasi positif yang kuat. Hasil Uji-T menyatakan terdapat perbedaan tidak signifikan kelimpahan mikroplastik pada lamun C. rotundata (sig. (2-tailed) 0,182>0,05) dan terdapat perbedaan signifikan kelimpahan mikroplastik sedimen tahun 2022 dan 2023 (sig. (2-tailed) 0,007<0,05). Hasil uji ATR-FTIR didapatkan kandungan polimer CA, ABS, HDPE, PMMA, PVC, dan PET pada sampel daun lamun C. rotundata.

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The existence of microplastics has polluted and disturbed the waters in Indonesian territory. This research compared the abundance of microplastics i Cymodocea rotundata seagrass, sediment, and water on Rambut Island, Seribu Islands, Jakarta, in 2022 and 2023. Samples were taken as many as eight individuals of seagrass per station, sediment, and water by random sampling method. The seagrass samples were cut 2 cm long and scraped, the sediment was dried and then given a saturated solution of NaCl, and the water sample was given NaCl. Then all samples were observed under a microscope. The average microplastic abundance of C. rotundata seagrass leaves in 2022 was 42 particles/cm and in 2023, it was 4.46 particles/cm. The average abundance of microplastics in sediments in 2022 was 73.53 particles/g and in 2023, it was 79.56 particles/g. The abundance of microplastics in water samples in 2022 was 51.33 particles/L and in 2023, it was 53.78 particles/L. The Spearman Correlation Test explains that the microplastic abundance of seagrass with sediment, water with sediment, and seagrass with water samples had a strong correlation. The results of the T-test stated that there was no significant difference in the abundance of microplastics in seagrass leaves of C. rotundata (sig. (2-tailed) 0.182>0.05) and there was a significant difference in the abundance of microplastics in sediments in 2022 and 2023 (sig. (2-tailed) 0.007<0.05). The results of the ATR-FTIR test found the polymer content of CA, ABS, HDPE, PMMA, PVC, and PET in C. rotundata seagrass samples."

"Increased plastic waste in the environment, particularly in the mangrove forest of Pulau Rambut, Jakarta Bay, has the potential to affect the abundance of microplastics in the surrounding waters. Microplastics, which are very small in size (<5mm), can be accidentally ingested by marine organisms such as Terebralia palustris and have negative effects on marine life, the environment, and humans. This study aims to analyze the comparison of microplastic abundance in T.palustris and sediment in the mangrove forest of Pulau Rambut, Jakarta Bay, in 2022 and 2023, as well as to determine the correlation between microplastic abundance in T.palustris and sediment. Twenty samples of T.palustris and sediment were collected at four stations in 2022 and 2023. The body tissue of T.palustris was separated from its shell, then dissolved with HNO3 and added to saturated NaCl. Sediment samples were dissolved with saturated NaCl. Microplastic abundance was observed and calculated using a Sedgwick Rafter Chamber under a microscope. Four forms of microplastics were observed in the T. palustris and sediment samples, namely fibers, fragments, films, and granules. The results showed an increase in microplastic abundance from 2022 to 2023. In 2022, the microplastic abundance was 363,592 ± 11,511 particles/g in T. palustris and 66,69 ± 7,638 particles/g in sediment, while in 2023, it reached 406,574 ± 6,154 particles/g in T. palustris and 79,7 ± 12,992 particles/g in sediment. From 2022 to 2023, the abundance of microplastic in T.palustris (particle/g) increased by 5%, T.palustris (particle/individual) increased by 37%, and sediment by 19%. There is a positive correlation between the microplastic abundance of T.palustris and sediment, with value of 0,768 obtained from the Spearman correlation test.Increased plastic waste in the environment, particularly in the mangrove forest of Pulau Rambut, Jakarta Bay, has the potential to affect the abundance of microplastics in the surrounding waters. Microplastics, which are very small in size (<5mm), can be accidentally ingested by marine organisms such as Terebralia palustris and have negative effects on marine life, the environment, and humans. This study aims to analyze the comparison of microplastic abundance in T.palustris and sediment in the mangrove forest of Pulau Rambut, Jakarta Bay, in 2022 and 2023, as well as to determine the correlation between microplastic abundance in T.palustris and sediment. Twenty samples of T.palustris and sediment were collected at four stations in 2022 and 2023. The body tissue of T.palustris was separated from its shell, then dissolved with HNO3 and added to saturated NaCl. Sediment samples were dissolved with saturated NaCl. Microplastic abundance was observed and calculated using a Sedgwick Rafter Chamber under a microscope. Four forms of microplastics were observed in the T. palustris and sediment samples, namely fibers, fragments, films, and granules. The results showed an increase in microplastic abundance from 2022 to 2023. In 2022, the microplastic abundance was 363,592 ± 11,511 particles/g in T. palustris and 66,69 ± 7,638 particles/g in sediment, while in 2023, it reached 406,574 ± 6,154 particles/g in T. palustris and 79,7 ± 12,992 particles/g in sediment. From 2022 to 2023, the abundance of microplastic in T.palustris (particle/g) increased by 5%, T.palustris (particle/individual) increased by 37%, and sediment by 19%. There is a positive correlation between the microplastic abundance of T.palustris and sediment, with value of 0,768 obtained from the Spearman correlation test.

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Increased plastic waste in the environment, particularly in the mangrove forest of Pulau Rambut, Jakarta Bay, has the potential to affect the abundance of microplastics in the surrounding waters. Microplastics, which are very small in size (<5mm), can be accidentally ingested by marine organisms such as Terebralia palustris and have negative effects on marine life, the environment, and humans. This study aims to analyze the comparison of microplastic abundance in T.palustris and sediment in the mangrove forest of Pulau Rambut, Jakarta Bay, in 2022 and 2023, as well as to determine the correlation between microplastic abundance in T.palustris and sediment. Twenty samples of T.palustris and sediment were collected at four stations in 2022 and 2023. The body tissue of T.palustris was separated from its shell, then dissolved with HNO3 and added to saturated NaCl. Sediment samples were dissolved with saturated NaCl. Microplastic abundance was observed and calculated using a Sedgwick Rafter Chamber under a microscope. Four forms of microplastics were observed in the T. palustris and sediment samples, namely fibers, fragments, films, and granules. The results showed an increase in microplastic abundance from 2022 to 2023. In 2022, the microplastic abundance was 363,592 ± 11,511 particles/g in T. palustris and 66,69 ± 7,638 particles/g in sediment, while in 2023, it reached 406,574 ± 6,154 particles/g in T. palustris and 79,7 ± 12,992 particles/g in sediment. From 2022 to 2023, the abundance of microplastic in T.palustris (particle/g) increased by 5%, T.palustris (particle/individual) increased by 37%, and sediment by 19%. There is a positive correlation between the microplastic abundance of T.palustris and sediment, with value of 0,768 obtained from the Spearman correlation test."

"Telah dilakukan penelitian tentang jenis dan kelimpahan mikroplastik pada daun lamun Cymodocea serrulata di Pulau Pramuka dan Pulau Semak Daun. Tujuan dari penelitian ini adalah membandingkan serta menganalisis kelimpahan dan jenis mikroplastik pada permukaan daun lamun atas dan bawah spesies Cymodocea serrulata, air dan sedimen. Sampel yang digunakan adalah daun lamun Cymodocea serrulata kemudian dipotong ± 1 cm2, 10 cm dari pangkal daun. Permukaan daun lalu dikerik menggunakan silet dan hasil kerikan diletakan pada kamar hitung Sedgewick Rafter Chamber dan ditetesi aquades lalu diamati pada mikroskop. Hasil pengamatan menunjukkan kelimpahan pada Pulau Pramuka lebih tinggi dengan nilai kelimpahan 86,85 ± 56,65 partikel.cm-2 dibandingkan Pulau Semak Daun sebesar 63,25 ± 33.01 partikel.cm-2. Kelimpahan mikroplastik pada air sebesar 98,62 ± 6,18 partikel.L-1 di Pulau Pramuka dan 59,58 ± 3,82 partikel.L-1 di Pulau Semak Daun. Kelimpahan pada sedimen di Pulau Pramuka sebesar 10766,67 ± 2280,59 partikel.Kg-1 dan 8333.33 ± 1239,18 partikel.Kg-1 pada Pulau Semak Daun. Mikroplastik yang berhasil teramati yaitu fiber, fragmen, film dan pellet. Film menjadi jenis mikroplastik yang paling banyak kelimpahannya pada permukaan daun lamun sedangkan fiber yang paling banyak ditemukan pada air dan sedimen. Hasil Uji-T (Independent Sample T-test) menunjukkan tidak terdapat perbedaan kelimpahan mikroplastik pada permukaan atas dengan bawah daun lamun, tetapi terdapat perbedaan yang signifikan kelimpahan mikroplastik pada permukaan daun lamun, air dan sedimen di Pulau Pramuka dengan Pulau Semak Daun.

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A research was conducted on the types and abundance of microplastics on Pramuka Island and Semak Daun Island. The purpose of this study was to compare and analyze the abundance and types of microplastics on the upper and lower leaf surfaces of species Cymodocea serrulata, water and sediment. The sample used was seagrass leaves Cymodocea serrulata and then cut ± 1 cm2, 10 cm from the base of the leaf. The leaf surface was then scraped using a razor blade and the scraped results were placed in the counting Sedgewick Rafter Chamber and added with distilled water and observed under a microscope. Observations showed that the abundance on Pramuka Island was higher with an abundance value of 86.85 ± 56.65 particles.cm-2 compared to Semak Daun Island of 63.25 ± 33.01 particles.cm-2. Abundance microplastic in water was 98.62 ± 6.18 particles.L-1 on Pramuka Island and 59.58 ± 3.82 particles.L-1 on Semak Daun Island. The abundance of sediment on Pramuka Island was 10766.67 ± 2280.59 particles.Kg-1 and 8333.33 ± 1239.18 particles.Kg-1 on Semak Daun Island. The microplastics that were observed were fiber, fragments, films and pellets. Film is the most abundant type of microplastic on the surface of seagrass leaves, while fiber is the most abundant in water and sediment. The result of T-test (Independent Sample T-test) showed that there was no difference in the abundance of microplastic on the upper and lower surfaces of seagrass leaves, but there was a significant difference in the abundance of microplastics on the surface of seagrass leaves, water and sediment on Pramuka Island and Semak Daun Island."

"Ikan Nila Oreochromis niloticus (Linnaeus, 1758) pada Setu Babakan Jagakarsa, Jakarta Selatan banyak dikonsumsi oleh masyarakat sekitar. Penelitian ini bertujuan untuk menganalisis presentase kelimpahan bentuk mikroplastik pada insang, lambung, dan usus ikan Nila Oreochromis niloticus (Linnaeus, 1758) yang diperoleh dari Setu Babakan, Jagakarsa, Jakarta Selatan. Penelitian dilakukan di Setu Babakan dan Laboratorium Biologi Laut, Departemen Biologi FMIPA Universitas Indonesia. Sampel ikan Nila yang diteliti sebanyak 18 ekor dengan panjang berkisar 13-20 cm. Sampel diisolasi untuk kemudian dilakukan metode destruksi dengan menggunakan larutan HNO3 65% sehingga dapat dilakukan proses analisis kelimpahan dan bentuk mikroplastik di bawah mikroskop. Hasil penelitian menunjukkan terdapat total kelimpahan rata-rata pada sampel air permukaan sebesar 308,00 ± 128,29 partikel/liter; insang sebesar 7.820 ± 1.847 partikel/individu; pada sampel lambung sebesar 2.588,11 ± 751,33 partikel/individu; dan pada sampel usus sebesar 5.178,16 ± 2.098,55 partikel/individu. Total kelimpahan mikroplastik terbesar terdapat pada sampel insang dan terendah pada sampel lambung. Hasil uji statistik Kruskal-Wallis menunjukkan tidak ada perbedaan presentase bentuk mikroplastik (fiber, film, fragmen dan granula) yang signifikan pada sampel insang, lambung dan usus ikan Nila Oreochromis niloticus (Linnaeus,1758) di Setu Babakan Jagakarsa, Jakarta Selatan

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Nile Tilapia Oreochromis niloticus (Linnaeus, 1758) in Setu Babakan Jagakarsa, South Jakarta is widely consumed by the local communities. This study analyzed percentage abudance of microplastics form in the gills, stomach, and intestinal of Nile Tilapia Oreochromis niloticus (Linnaeus, 1758) from Setu Babakan Jagakarsa, South Jakarta. This study was conducted at Setu Babakan and Marine Biology Laboratory, Departement of Biology FMIPA UI, Depok. The samples of Nile Tilapia studied were 18 individuals with the same relative length between 13-20 cm. The sample were isolated in order to do the destruction methods with HNO3 65%, then analysis of abundance and shape of microplastics can be done. The results show that the average total abudance in the gills sample was 7.820 ± 1.847 particles/individual; in the stomach was 2.588,11 ± 751,33 particles/individual; and in the intenstine was 5.178,16 ± 2.098,55 particles/individuals. The highest total abudance of microplastics was found in the gills and the lowest in the stomach samples. The results from Kruskal-Wallis statistical test shows there was no significant difference in the percentage of microplastics form (fiber, film, fragment, and granules) in the gills, stomach, and intestinal samples of Nile Tilapia Oreochromis niloticus (Linnaeus,1758) in Setu Babakan, Jagakarsa, South Jakarta."