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"Salah satu spesies makroalga di perairan Pulau Semak Daun yang berpotensi memiliki akumulasi mikroplastik yang tinggi adalah Halimeda macroloba atau kaktus laut tegak. Penelitian ini bertujuan untuk mengetahui bentuk, warna, ukuran, dan kelimpahan mikroplastik pada H. macroloba di perairan Pulau Semak Daun, serta pengaruh pengocokan terhadap pengurangan kelimpahan mikroplastik pada H. macroloba Decaisne 1841. Mikroplastik pada permukaan makroalga diluruhkan menggunakan orbital shaker kecepatan 150 rpm dengan variasi waktu 5, 10, dan 15 menit. Mikroplastik yang masih menempel setelah perlakuan pengocokan dihitungan dengan melarutkan jaringan makroalga menggunakan larutan basa kuat natrium hidroksida (NaOH) 6 M. Hasil penelitian menunjukkan bahwa ditemukan mikroplastik bentuk fiber, fragmen, film, dan pellet dalam berbagai ukuran dengan variasi warna biru, hitam, merah, dan hijau pada objek pengamatan. Ukuran partikel mikroplastik yang ditemukan berada dalam kisaran 8,6—4649,12 μm. Bentuk mikroplastik yang mendominasi H. macroloba adalah fiber, dengan total 30,2 partikel/g (64,7%). Warna partikel yang mendominasi H. macroloba adalah warna biru, dengan total 560 partikel (47,2%). Pengurangan kelimpahan mikroplastik terjadi pada pengocokan 5 menit sebesar 50%, pengocokan 10 menit sebesar 75%, dan pengocokan 15 menit sebesar 89%. Sedangkan untuk kelimpahan mikroplastik yang masih melekat setelah dilakukan pengocokan 5 menit sebesar 50%, setelah pengocokan 10 menit sebesar 25%, dan setelah pengocokan 15 menit sebesar 11%. Uji One-Way ANOVA membuktikan bahwa semakin lama waktu pengocokan maka akan semakin tinggi persentase pengurangan mikroplastik. Pengocokan dengan kecepatan 150 rpm selama 15 menit memberikan hasil pengurangan kelimpahan mikroplastik tertinggi dibandingkan dengan variasi waktu pengocokan lainnya.

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One of the macroalgae species in the waters of the Semak Daun Island which has the potential to have a high microplastic accumulation is Halimeda macroloba or an erect sea cactus. This study aims to determine the shape, color, size, and abundance of microplastics in H. macroloba in the waters of Semak Daun Island, also the effect of shaking on reducing the abundance of microplastics in H. macroloba Decaisne 1841. Microplastics on the surface of macroalgae were removed using an orbital shaker at a speed of 150 rpm with time variations of 5, 10, and 15 minutes. Microplastics that are still attached after the shaking treatment are calculated by dissolving the macroalgae tissue using a 6 M sodium hydroxide (NaOH) strong base solution. The results of the study showed that found microplastic form of fiber, fragments, films, and pellets in various sizes with variations colour of  blue, black , red, and green on observation objects. The particle size of the microplastics found in the range of 8.6-4649.12 μm. The microplastic form that dominates H. macroloba is fiber, with a total of 30.2 particles/g (64.7%). The dominant particle color of H. macroloba is blue, with a total of 560 particles (47.2%). The reduction on the abundance of microplastics occurred at 50% shaking for 5 minutes, 75% shaking for 10 minutes, and 89% shaking for 15 minutes. As for the abundance of microplastics that are still attached after 5 minutes of shaking it is 50%, after 10 minutes of shaking it is 25%, and after 15 minutes of shaking it is 11%. The One-Way ANOVA test proved that the longer the shaking time, the higher the percentage of microplastic reduction. Shaking at 150 rpm for 15 minutes gave the highest reduction in microplastic abundance compared to other variations of shaking time."

"Mikroplastik merupakan salah satu polutan di lingkungan berukuran mikro yang menjadi permasalahan global oleh tingginya penggunaan plastik masyarakat. Penelitian ini bertujuan untuk menganalisis kelimpahan dan kandungan jenis mikroplastik pada air laut, sedimen, serta daun lamun Enhalus acoroides di Taman Nasional Pulau Pramuka, Kepulauan Seribu. Sampel air disaring dengan plankton net sementara sedimen dikeringkan dalam oven hingga berat konstan, kemudian masing- masing dicampur dalam NaCl dan diidentifikasi mikroskop cahaya. Hasil yang didapat lamun titik timur memiliki rata-rata kelimpahan mikroplastik 33,35 partikel/cm2, titik utara 38,6 partikel/cm2, titik selatan 40,55 partikel/cm2, kemudian titik barat 42,65 partikel/cm2, dan titik baratlaut 44,7 partikel/cm2. Air titik timur 56 partikel/L, titik utara 58 partikel/mL, titik selatan 69,33 partikel/mL, titik barat 72 partikel/mL, dan titik barat laut 74,66 partikel/L. Sedimen titik timur 38,66 partikel/g, titik utara 58,66 partikel/g, titik selatan 75 partikel/g, titik barat 77 partikel/g, dan titik barat laut 89 partikel/g. Hasil uji kandungan jenis ATR-FTIR ditemukan kandungan HDPE, LDPE, dan PP. Uji Kruskal Wallis menunjukkan tidak ada perbedaan signifikan mikroplastik pada lamun Enhalus acoroides di kelima titik.

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Microplastic is one of the micro-sized pollutants in the environment and has become a global problem due to the high use of plastic amongst society. This study is aimed to analyze the abundance and content of microplastics in sea water, sediment, and seagrass Enhalus acoroides in Pramuka Island. The leaf surface of Enhalus acoroides were softly scraped using razor blade and microplastic was identified through microscope and ATR-FTIR. The water sample was filtered with a plankton net whereas the sediment was dried in an oven until constant weight, each was mixed in NaCl and identified through light microscope. Results obtained, east site has a microplastic average abundance of 33.35 particles/cm2, north site 38.6 particles/cm2, south site 40.55 particles/cm2, west site 42.65 particles/cm2, and northwest site 44.7 particles/cm2. The east site for water sample has average abundance 56 particles/mL, north site 58 particles/mL, south site 69.33 particles/mL, west site 72 particles/mL, and northwest site 74.66 particles/L. The east site for sediment has 38.66 particles/g,north site 58.66 particles/g, south site 75 particles/g, west site 77 particles/g, and northwest site 89 particles/g. The result of ATR-FTIR showed HDPE, LDPE, and PPcontent. Kruskal Wallis Test showed no significant difference in microplastic abundance in seagrass Enhalus acoroides at the five sampling sites and Pearson Test showed positive and signficant relation between microplastics in water and sediment."

"Penelitian ini menganalisis bentuk dan kelimpahan mikroplastik pada sumber air laut, sumber air tawar petak A, air kolam 19, pakan buatan (pelet), saluran pencernaan, dan feses udang vannamei Litopenaeus vannamei (Boone, 1931) di Tambak Udang Vannamei Unit Sobo, Banyuwangi, Jawa Timur. Sampel air diambil dan disimpan dalam botol kaca sebanyak 300 ml, sampel pakan menggunakan pakan jenis SGH2 buatan perusahaan sendiri sebanyak 10 gr, sedangkan sampel udang digunakan sebanyak 5 individu dari kolam 19 dan tiap udang diambil bagian saluran pencernaan dan fesesnya. Sampel air, pakan, saluran pencernaan, dan feses diamati menggunakan mikroskop serta dilakukan pengulangan sebanyak 3 kali. Sampel diambil pada tanggal 25 Oktober 2021 dengan DOC (Day of Culture) 53 dan penelitian berlangsung selama 1 bulan dari bulan Oktober hingga November 2021. Penelitian memperlihatkan tiga bentuk mikroplastik, yaitu fragmen, film, dan fiber. Mikroplastik bentuk fragmen mendominasi dalam penelitian ini. Selain itu, berdasarkan data kelimpahan mikroplastik, diketahui bahwa mikroplastik pada pakan banyak yang tidak ditemukan ke dalam proses pencernaan. Kemudian, diketahui juga tidak terdapat perbedaan nilai kelimpahan, serta terdapat hubungan kelimpahan mikroplastik pada saluran pencernaan dan feses udang vannamei.

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This study analyzed the shape and abundance of microplastics in seawater sources, plot A freshwater source, pond water, artificial feed, digestive tract, and feces of Litopenaeus vannamei (Boone, 1931) at Unit Sobo Shrimp Ponds, Banyuwangi, East Java. As much as 300 ml of water were taken and stored in glass bottles; feed samples made by the company itself, were taken as much as 10 grams; while shrimp samples were used as many as 5 individuals from 19 ponds, taken from the digestive tract and feces. Each sample were observed using a microscope and repeated 3 times. Samples were taken on October 25, 2021 with DOC (Day of Culture) 53 and the study lasted for 1 month from October to November 2021. Research shows three forms of microplastics, namely fragments, films, and fibers. Microplastic fragments dominate in this study. In addition, based on data on the abundance of microplastics, it is known that many microplastics in feed are not found in the digestive process. Then, it was also known that there was no difference in the abundance value and that there was a relationship between the abundance of microplastics in the digestive tract and feces."

"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."

"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."

"Situ Rawa Kalong dimanfaatkan oleh masyarakat sekitar untuk budidaya ikan, kegiatan memancing dan tempat rekreasi. Situ tersebut dikelilingi oleh empat buah pabrik (kap lampu, minuman kemasan, kosmetik, plastik) dan pemukiman penduduk sehingga rentan terkena cemaran organik dan anorganik yang berdampak pada organisme perairan, khususnya fitoplankton. Penelitian ini bertujuan untuk mengetahui diversitas fitoplankton serta mengetahui status mutu dan kualitas perairan di Situ Rawa Kalong melalui metode Storet dan perhitungan indeks diversitas fitoplankton dari Shannon-Wiener. Pengamatan dilakukan pada bulan Oktober 2020. Pengambilan sampel fitoplankton dilakukan secara horizontal. Fitoplankton yang ditemukan selama pengamatan yakni divisi dari Bacillariophyta, Chlorophyta, Cyanophyta dan Euglenophyta. Berdasarkan hasil metode Storet, perairan Situ Rawa Kalong memiliki status mutu air kelas D dengan skor (-46) – (-48). Nilai tersebut tergolong buruk dan menunjukkan bahwa kualitas perairan di Situ Rawa Kalong mengalami pencemaran berat dengan nilai indeks diversitas berkisar antara 0,46 – 0,48 yang menunjukan komunitas tidak stabil dan terdapat jenis yang mendominasi. Jenis fitoplankton yang mendominasi adalah Chlorella sp. dan Microcystis sp.

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Situ Rawa Kalong is used by the local community for fish farming, fishing activities and recreation areas. The Situ is surrounded by four factories (lampshade, drinking water, cosmetic, plastic) and residential areas, making it susceptible to organic and inorganic contamination which affects aquatic organisms, especially phytoplankton. This study aims to find out the diversity of phytoplankton related to the status and water quality in Situ Rawa Kalong using Storet method and calculation of Shannon-Wiener phytoplankton diversity index. Observations were made in October 2020. Phytoplankton sampling was carried out horizontally. The phytoplankton found during the observation were divisions of Bacillariophyta, Chlorophyta, Cyanophyta and Euglenophyta. Based on the results of the Storet method, water quality in Situ Rawa Kalong has been classified as D water quality status with a score of (-46) – (-48). These value is poor and indicates that the water quality in Situ Rawa Kalong is heavily polluted with a diversity index value ranging from 0,46 to 0,48 showing an unstable community and existence of dominant species. The dominant species of phytoplankton are Chlorella sp. and Microcystis sp.

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"Keberadaan ekosistem terumbu karang berperan penting secara ekologis karena menjadi sumber kehidupan bagi berbagai biota laut. Penurunan kualitas ekosistem terumbu karang di Indonesia, disebabkan oleh aktivitas manusia dan pengaruh alam. Penelitian dilakukan di empat stasiun Pulau Pramuka, Kepulauan Seribu (Utara, Timur, Selatan, dan Barat). Penelitian ini bertujuan untuk menganalisis kondisi kesehatan terumbu karang dengan mengetahui persentase tutupan dan warna terumbu karang, mengidentifikasi bentuk koloni terumbu karang, serta menganalisis dominansi, keanekaragaman dan keseragaman karang. Metode yang digunakan yaitu metode Underwater Photo Transect (UPT) dan dianalisis menggunakan software CPCe (Coral Point Count with Excel extension), lalu metode CoralWatch (CW) dengan Coral Health Chart, serta perhitungan indeks dominansi (Simpson), keanekaragaman (Shannon-Wiener), dan keseragaman (E). Analisis CPCe menunjukkan bahwa tutupan persentase terumbu karang berada pada kategori sedang (30,87-42,20%). Analisis CoralWatch menunjukkan Stasiun 1, 2, dan 4 mayoritas terumbu karangnya mengalami stres dengan persentase karang sehat masing-masing sebesar 29,36%, 9,23%, dan 15,22%, sedangkan Stasiun 3 memiliki proporsi karang sehat lebih tinggi (35.65%).  Ditemukan 10 bentuk koloni karang, Coral Massive mendominasi di Stasiun 1 (50), Stasiun 2 (69), dan Stasiun 3 (19). Stasiun 4 di dominasi oleh Coral Foliose (34). Hasil analisis indeks biodiversitas terumbu karang berada pada kategori dominansi rendah (0,25), keanekaragaman sedang (2,47), dan keseragaman rendah (0,36).

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The existence of coral reef ecosystems plays an important role ecologically because it is a source of life for various marine biota. The quality of coral reef ecosystems in Indonesia can decline, due to human activities and natural influences. The research was conducted at four stations on Pramuka Island, Seribu Islands (North, East, South and West). This research aims to analyze the health condition of coral reefs by knowing the percentage of coral cover and color, identifying the shape of coral reef lifeform, and analyzing coral dominance, diversity and uniformity. The method used is method Underwater Photo Transect (UPT) and analyzed using CPCe software (Coral Point Count with Excel extension), method CoralWatch (CW) with Coral Health Chart, as well as calculation of dominance (Simpson), diversity (Shannon-Wiener) and uniformity (E) indices. CPCe analysis shows that the percentage cover of coral reefs is in the medium category (30.87-42.20%). CoralWatch analysis shows that Stations 1, 2, and 4 have the majority of coral reefs experiencing stress with healthy coral percentages of 29.36%, 9.23%, and 15.22%, respectively, while Station 3 has a higher proportion of healthy corals (35.65%). About 10 lifeform were found, Coral Massive are dominating at Station 1 (50), Station 2 (69), and Station 3 (19). Station 4 is dominated by Coral Foliose (34). The results of the coral reef biodiversity index analysis are in the categories of low dominance (0,25), medium diversity (2.47), and low uniformity (0.36)."

"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. "

"Penelitian ini bertujuan untuk menganalisis kelimpahan bentuk-bentuk mikroplastik yang terakumulasi pada air dan sedimen, menganalisis dan membandingkan jumlah kelimpahan mikroplastik pada saluran pencernaan bulu babi Diadema setosum yang diambil dari Gugusan Pulau Pramuka, Kepulauan Seribu, Jakarta. Pengamblan sampel air, sedimen dilakukan bedasarkan tiga titik mengelilingi pulau dan sampel bulu babi Diadema setosum dilakukan dari 10 lokasi berbeda mengelilingi pulau. Sampel air sebanyak 20 liter disaring dengan plankton net 300 μ, sampel sedimen sebanyak 200 gram dikeringkan menggunakan oven, dan saluran pencernaan bulu babi di larutkan menggunakan HNO3 65%. Semua sampel dijenuhkan dengan larutan NaCl agar partikel mikroplastik mengapung di permukaan. Setiap sampel diambil sebanyak 1 ml, kemudian diletakan di kamar hitung Sedgewick rafter untuk diamati dibawah mikroskop dan dihitung bedasarkan jenis mikroplastik yang ditemukan. Hasil penelitian menunjukan kelimpahan mikroplastik paling tinggi pada Pulau Panggang sejumlah 148,00 partikel L-1 pada air, 217.100 partikel kg-1 pada sedimen, dan 1.264,00 partikel ind-1 pada saluran pencernaan bulu babi. Disusul oleh Pulau Pramuka dengan kelimpahan mikroplastik sejumlah 132,67 partikel L-1 pada air, 136.800 partikel kg-1 pada sedimen, dan 1.082,7 partikel ind-1 pada saluran pencernaan bulu babi.. Jumlah kelimpahan mikroplastik terendah ada pada Pulau Semak Daun sejumlah 92,67 partikel L-1 pada air, 121.066 partikel kg-1 pada sedimen, dan 923,33 partikel ind-1 pada saluran pencernaan bulu babi. Terdapat perbedaan yang signifikan jumlah kelimpahan mikroplastik pada sampel saluran pencernaan bulu babi pada Pulau Panggang, Pulau Pramuka, dan Pulau Semak Daun.

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This study aims to analyze the abundance of forms of microplastics that accumulate in water and sediment, analyze and compare the abundance of microplastics in the digestive tract ofsea urchins Diadema setosum taken from the Pramuka Island Cluster, Seribu Islands, Jakarta. Water and sediment samples were taken from three points around the island and samples ofsea urchins were Diadema setosum taken from 10 different locations around the island. A 20 liter water sample was filtered with a plankton net of 300 , a sediment sample of 200 grams was dried using an oven, and the digestive tract of sea urchins was dissolved using 65% HNO3. All samples were saturated with NaCl solution so that the microplastic particles floated on the surface. Each sample was taken as much as 1 ml, then placed in thecounting room Sedgewick rafter to be observed under a microscope and calculated based on the type of microplastic found. The results showed that the highest abundance of microplastics was on Panggang Island with 148.00 L-1 particles in water, 217,100 kg-1 particles in sediment, and 1,264,00 ind-1 particles in the digestive tract of sea urchins. Followed by Pramuka Island with an abundance of microplastics of 132.67 L-particles1 in water, 136,800 kg-particles1 in sediments, and 1,082.7 ind-particles1 in the digestive tract of sea urchins.. The lowest abundance of microplastics was found on Pulau Semak Daun with 92.67 particles L-1 in water, 121,066 particles kg-1 in sediments, and 923.33 particles ind-1 in the digestive tract of sea urchins. There were significant differences in the abundance of microplastics in the digestive tract samples of sea urchins on Panggang Island, Pramuka Island, and Semak Daun Island."

"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. "