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"Penelitian ini bertujuan untuk mengkaji jenis dan kelimpahan perifiton pada substrat plastik di Situ Agathis dan Situ Mahoni, menganalisis perbandingan kelimpahan perifiton pada substrat plastik di Situ Agathis dan Mahoni, dan menganalisis kualitas perairan melalui keanekaragaman perifiton pada substrat plastik padat di Situ Agathis dan Situ Mahoni. Penelitian ini menggunakan beberapa parameter diantaranya pH, suhu, oksigen terlarut (dissolved oxygen), kekeruhan (turbidity), kecerahan, arus, dan nitrat (NO3-). Penelitian dilakukan pada bulan September 2022 – Maret 2023 pada 3 stasiun pengambilan sampel di Situ Agathis dan Situ Mahoni. Sampel yang diperoleh dianalisis menggunakan indeks keanekaragaman Shannon-Wiener, Indeks kemerataan, dan indeks Dominansi Simpson. Berdasarkan hasil pengukuran parameter fisika kimia di Situ Agathis dan Situ Mahoni didapatkan kisaran pH, suhu, oksigen terlarut, kekeruhan, kecerahan, arus, nitrat (NO3-) secara berturut-turut yaitu 7,05-7,49; 22,9-30,7 ⁰C; 4,7-10,5 mg/l; 3,06-16,2 NTU; 31,8-44 cm; 0,003-0,015 m/s; 2,3-16,8 mg/l. Berdasarkan hasil identifikasi didapatkan 11 kelas perifiton di Situ Agathis dan Situ Mahoni yaitu Bacillariophyceae (13 genus), Chlorophyceae (11 genus), Conjugatophyceae (4 genus), Cyanophyceae (6 genus), Euglenophyceae (3 genus), Klebsormidiophyceae (1 genus), Monogononta (1 genus), Oligohymenophorea (1 genus), Trebouxiophyceae (1 genus), Tubulinea (1 genus), dan Xanthophyceae (1 genus) dengan total 44 genus. Situ Agathis memiliki total kelimpahan perifiton yang lebih tinggi dibandingkan Situ Mahoni dengan niilai berturut-turut 6.219,8 sel/cm2 dan 2.025 sel/cm2. Kelas Bacillariophyceae menjadi kelas dengan nilai kelimpahan perifiton tertinggi di kedua situ. Nilai keaneragaman perifiton di kedua situ menunjukkan bahwa kualitas air Situ Agathis dan Mahoni termasuk dalam kualitas air tercemar sedang.

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This study aims to examine the types and abundance of periphyton on plastic substrates in Situ Agathis and Situ Mahoni, analyze the comparison of periphyton abundance on plastic substrates in Agathis and Mahoni Situ, and analyze water quality through periphyton diversity on solid plastic substrates in Agathis and Mahoni Situ. This study used several parameters including pH, temperature, dissolved oxygen, turbidity, brightness, current flow, and nitrate (NO3-). The research was conducted in September 2022 – March 2023 at 3 sampling stations in Situ Agathis and Situ Mahoni. The samples obtained were analyzed using the Shannon-Wiener diversity index, evenness index, and Simpson dominance index. Based on the results of measurements of physico-chemical parameters in the Agathis and Mahoni Situ, the range of pH, temperature, dissolved oxygen, turbidity, brightness, nitrate (NO3-) was obtained, respectively, namely 7.05-7.49; 22.9-30.7 ⁰C; 4.7-10.5 mg/l; 3.06-16.2 NTUs; 31.8-44cm; 0.003-0.015 m/s; 2.3-16.8 mg/l. Based on the identification results, 11 classes of periphyton were found in Situ Agathis and Situ Mahoni, namely Bacillariophyceae (13 genera), Chlorophyceae (11 genera), Conjugatophyceae (4 genera), Cyanophyceae (6 genera), Euglenophyceae (3 genera), Klebsormidiophyceae (1 genus), Monogononta (1 genus), Oligohymenophorea (1 genus), Trebouxiophyceae (1 genus), Tubulinea (1 genus), and Xanthophyceae (1 genus) with a total of 44 genera. Agathis Lake has a higher total periphyton abundance than Mahoni Lake with values of 6,219.8 cells/cm2 and 2,025 cells/cm2, respectively. The Bacillariophyceae class was the class with the highest periphyton abundance in both sites. The value of periphyton diversity in both lakes shows that the water quality of Agathis and Mahoni Lakes is classified as moderately polluted water quality."

"Situ Agathis merupakan situ pertama yang menerima aliran air dari saluran DAS Ciliwung menuju wilayah kampus Universitas Indonesia. Keberadaan Situ Agathis dapat memengaruhi kualitas perairan keempat situ lainnya di Universitas Indonesia. Telah dilakukan penelitian mengenai penilaian kualitas air sebagai penyesuaian penggunaan indeks Singscore di Situ Agathis, Universitas Indonesia, Depok, Jawa Barat pada bulan maret 2022. Berdasarkan hasil perhitungan indeks Singscore, Situ Agathis tergolong kedalam perairan buruk dengan total nilai kriteria sebasar 34,35. Hasil penilaian indeks Singscore berhubungan dengan hasil perhitungan parameter fisika-kimia air yakni mengindikasikan perairan tercemar. Selain itu, berdasarkan jenis dan komposisinya, makrozoobenthos yang menempati perairan Situ Agathis memiliki kemampuan toleransi terhadap perairan tercemar. Korelasi antara indeks Singscore, parameter fisika-kimia air dan makrozoobenthos dapat dilihat melalui hasil analisis PCA. Hasil menunjukkan adanya korelasi negatif antara indeks Singscore dengan makrozoobenthos. Hasil nilai korelasi negatif disebabkan oleh beberapa famili yang memiliki nilai toleransi besar dapat hidup berdampingan dengan famili yang memiliki nilai toleransi kecil serta nilai indeks Singscore yang memiliki perbedaan jauh pada masing-masing stasiun yang dapat memengaruhi nilai korelasi. Selain itu, analisis PCA menunjukkan parameter fisika yang mempengaruhi keberadaan makrozoobenthos di Situ Agathis meliputi suhu, kekeruhan, dan oksigen terlarut (DO).

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Situ Agathis is the first pond to receive water from the Ciliwung watershed to the University of Indonesia campus area. The existence of Situ Agathis can affect the water quality of the other four lakes at the University of Indonesia. Research has been carried out on the assessment of water quality as an adjustment to the use of the Singscore index at Situ Agathis, University of Indonesia, Depok, West Java in March 2022. Based on the results of the Singscore index calculation, Situ Agathis is classified as bad waters with a total criterion value of 34.35. The results of the Singscore index assessment are related to the results of the calculation of the water physico-chemical parameters, which indicate polluted waters. In addition, based on the type and composition, the macrozoobenthos that inhabit the waters of Situ Agathis can tolerate polluted waters. The correlation between Singscore index, water physico-chemical parameters, and macrozoobenthos can be seen through the results of PCA analysis. The results showed a negative correlation between the Singscore index and macrozoobenthos. The results of the negative correlation value are caused by several families having a large tolerance value that can coexist with families that have a small tolerance value and the significant difference in the Singscore index value at each station which can affect the correlation value. In addition, PCA analysis showed that the physical parameters that affect the presence of macrozoobenthos in Situ Agathis include temperature, turbidity, and dissolved oxygen (DO)."

"Mikroplastik yang mencemari perairan tawar dapat mengganggu keberlangsungan hidup biota di dalamnya. Penelitian ini bertujuan untuk menganalisis bentuk, warna, dan kelimpahan mikroplastik yang terkandung pada air, sedimen, insang, dan saluran pencernaan ikan red devil Amphilophus labiatus di Situ Kenanga dan Situ Mahoni, Universitas Indonesia, Depok, Jawa Barat. Sampel air dan sedimen di ambil pada 3 stasiun pengambilan sampel dari kedua situ. Sampel ikan red devil diperoleh 15 ekor pada masing – masing situ. Sampel insang dan saluran pencernaan dihancurkan menggunakan larutan asam nitrat (HNO3) 65%. Sampel air diambil 20 L dan disaring menggunakan plankton net. Sampel sedimen dikeringkan dalam oven sebanyak 25 gram. Larutan NaCl jenuh digunakan untuk memisahkan mikroplastik dengan pengotor. Sebanyak 1 mL sample diteteskan pada Sedgwick Rafter Chamber kemudian diamati dan dihitung berdasarkan bentuk mikroplastik di bawah mikroskop. Hasil penelitian menunjukkan kelimpahan mikroplastik bentuk fiber, fragmen, film, granula terdapat pada seluruh sampel dengan warna yang beragam. Hasil penelitian menunjukkan total kelimpahan rata – rata mikroplastik di Situ Kenanga sebanyak 434,33 ± 23,51 partikel L-1 pada air, 45.837,04 ± 36.305,97 partikel kg-1 pada sedimen, 268,33 ± 119,18 partikel gr-1 dan 1266,2 ± 349,72 partikel ind-1 pada insang, 287,79 ± 185,22 partikel gr-1 dan 978,22 ± 336,38 partikel ind-1 pada saluran pencernaan. Pada Situ Mahoni sebesar 437,67 ± 30,21 partikel L-1 pada air, 36.237,04 ± 16.702,59 partikel kg-1 pada sedimen, 429,18 ± 187,50 partikel gr-1 dan 1233,8 ± 253,60 partikel ind-1 pada insang, 318,04 ± 114,94 partikel gr-1 dan 1053,78 ± 328,44 partikel ind-1 pada saluran pencernaan.

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Microplastics that contaminate freshwater can disrupt the survival of the biota in it. This study aims to analyze the shape, color, and abundance of microplastics contained in water, sediment, gills, and digestive tract of red devil fish Amphilophus labiatus in Situ Kenanga and Situ Mahoni, University of Indonesia, Depok, West Java. Water and sediment samples were taken at 3 sampling stations from the two Situ. Samples of red devil fish were obtained 15 tails in each Situ. Samples of gills and digestive tract were destroyed using 65% nitric acid (HNO3) solution. Water samples were taken 20 L and filtered using a plankton net. Sediment samples were dried in an oven as much as 25 grams. Saturated NaCl solution was used to separate microplastics with impurities. A total of 1 mL of the sample was dropped into the Sedgwick Rafter Chamber and then observed and calculated based on the shape of the microplastic under a microscope. The results showed an abundance of microplastics in the form of fibers, fragments, films, and granules in all samples with various colors. The results showed the total average abundance of microplastics in Situ Kenanga was 434,33 ± 23,51 L-1 particles in water, 45.837,04 ± 36.305,97 particles kg-1 in sediments, 268.33 ± 119.18 particles gr-1 and 1266.2 ± 349.72 particles ind-1 in the gills, 287.79 ± 185.22 particles gr-1 and 978.22 ± 336.38 particles ind-1 in the digestive tract. At Situ Mahoni there are 437,67 ± 30,21 particles L-1 in water, 36.237,04 ± 16.702,59 particles kg-1 in sediments, 429.18 ± 187.50 particles gr-1 and 1233.8 ± 253.60 particles ind-1 on the gills, 318.04 ± 114.94 particles gr-1 and 1053.78 ± 328.44 particles ind-1 in the digestive tract.

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"Mikroplastik diketahui telah tertelan oleh berbagai taksa biota. Penelitian ini dilakukan untuk menganalisis kelimpahan, bentuk, dan warna mikroplastik yang terdapat pada air, sedimen, dan ikan cere Gambusia affinis di Situ Kenanga dan Situ Mahoni, Universitas Indonesia, Depok, Jawa Barat. Seluruh sampel diambil di 3 stasiun yaitu inlet, midlet, dan outlet. Sampel air 20 L disaring menggunakan plankton net 350 mesh, sampel sedimen diambil 250 mL menggunakan Ekman grab, ikan cere diambil secara acak menggunakan dip net sebanyak 20 individu dari tiap situ. Sampel ikan diawetkan dengan alkohol 70% dan diekstraksi menggunakan 10 mL NaOH 1 M. Sedimen dikeringkan pada oven 65°C dan dihaluskan. Seluruh sampel dilarutkan dengan NaCl jenuh. Larutan dihomogenisasi sebanyak 20 mL dan 1 mL diteteskan Sedgewick Rafter Chamber untuk diamati di bawah mikroskop cahaya. Hasil pengamatan menunjukkan total rata-rata kelimpahan mikroplastik di Situ Kenanga pada air sejumlah 434,33 ± 23,51 partikel L-1, pada sedimen sejumlah 45.837,04 ± 36.305,97 partikel kg-1, pada ikan cere sejumlah 287, 67 ± 95,65 partikel ind-1 atau 212,28 ± 61,88 partikel gram-1. Sementara itu, pada air di Situ Mahoni sejumlah 437,67 ± 30,21 partikel L-1, pada sedimen sejumlah 36.237,04 ± 16.702,59 partikel kg-1, dan pada ikan cere sejumlah 275 ± 95,82 partikel ind-1 atau 654,28 ± 279,71 partikel gram-1. Hasil analisis Uji T Dua Sampel menunjukkan tidak terdapat perbedaan nyata pada sampel air, sedimen, dan ikan cere (partikel ind-1), tetapi terdapat perbedaan nyata pada ikan cere (partikel g-1) dari kedua situ. Fiber dan warna hitam merupakan bentuk dan warna mikroplastik yang mendominasi keseluruhan sampel.

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Microplastics have been ingested by various biota taxa. This study was aimed to analyze the abundance, shape, and color of microplastic found in water, sediment, and mosquitofish Gambusia affinis in Situ Kenanga and Situ Mahoni, University of Indonesia, Depok, West Java. All samples were taken at 3 stations, namely inlet, midlet, and outlet. Water samples (20 L) were filtered using a 350 mesh plankton net, sediment samples (250 mL) were taken using an Ekman grab, mosquitofish were taken randomly using a dip net, and 20 individuals from each situ (total of 40 individuals). Fish samples were preserved in 70% alcohol and extracted using 10 mL of 1 M NaOH. Sediments were dried in an oven at 65°C and pulverized. All samples were dissolved with saturated NaCl. The solution (20 mL) was homogenized, then 1 mL of solution was taken to the Sedgewick Rafter Chamber and then observed under a light microscope. The results showed that the average total of microplastics in Situ Kenanga in water was 434,33 ± 23,51 L-1 particles, in sediments were 45.837,04 ± 36.305,97 kg-1 particles, and in fish were 287, 67 ± 95,65 ind-1 particles or 212,28 ± 61,88 gram-1 particles. Meanwhile, the average total of microplastics in Situ Mahoni in water were 437,67 ± 30,21 L-1 particles, in sediments were 36.237,04 ± 16.702,59 kg-1 particles, and in fish were 275 ± 95,82 ind-1 particles or 654,28 ± 279,71 gram-1 particles. The results of the Two Sample T-Test analysis showed that there was no difference in water, sediment, and mosquitofish (ind-1 particles) between the two situ, but there was a significant difference in mosquitofish (g-1 particles) from the two situ. Fiber and black were respectively the predominant shapes and colors of microplastics in all samples."

"Keberadaan mikroplastik di perairan dapat mengancam biota di dalamnya. Penelitian dilakukan dengan tujuan menganalisis kelimpahan, bentuk, dan warna mikroplastik pada air, sedimen, insang dan saluran pencernaan ikan sapu-sapu Pterygoplichthys pardalis dari Situ Kenanga dan Situ Mahoni, Kampus Universitas Indonesia, Depok. Pengambilan sampel air dan sedimen dilakukan pada inlet, midlet, dan outlet kedua situ. Sampel air disaring menggunakan plankton net, sampel sedimen diambil menggunakan Ekman grab kemudian dikeringkan menggunakan oven, sampel P. pardalis sebanyak 15 individu diambil menggunakan cast net dari masing-masing situ, kemudian insang dan saluran pencernaannya diisolasi dan didestruksi menggunakan HNO3 65%. Tiap sampel yang diperoleh dilarutkan dengan larutan NaCl jenuh agar terjadi flotasi. Pengamatan dilakukan menggunakan mikroskop cahaya dan Sedgwick Rafter Chamber untuk meletakkan sampel, dengan mengamati bentuk, warna, dan jumlah partikel mikroplastik. Hasil penelitian menunjukkan bahwa bentuk fiber, film, fragmen, granula, serta warna transparan, hitam, biru, dan merah muda ditemukan pada semua sampel. Kelimpahan mikroplastik di Situ Kenanga pada air sebanyak 48,26 ± 23,51 partikel L-1, sedimen 45837,04 ± 36305,97 partikel Kg-1, insang 290,48 ± 154,58 partikel g-1 atau 1156,44 ± 378,69 partikel ind-1, saluran pencernaan 134,37 ± 55,72 partikel g-1 atau 1364,89 ± 339,54 partikel ind-1. Kelimpahan mikroplastik di Situ Mahoni pada air sebanyak 48,63 ± 30,21 partikel L-1, sedimen 36237,04 ± 16702,60 partikel Kg-1, insang 287,23 ± 109,40 partikel g-1 atau 1153,78 ± 324,32 partikel ind-1, saluran pencernaan 123,77 ± 34,35 partikel g-1 atau 1304,44 ± 270,90 partikel ind-1. Tidak terdapat perbedaan signifikan antara kelimpahan mikroplastik di Situ Kenanga dan Situ Mahoni pada semua sampel.

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The presence of microplastics in the water could threaten the biota there. This study was conducted to analyze the abundance, shapes, and colors of microplastics in water, sediment, gills and digestive tract of amazon sailfin catfish Pterygoplichthys pardalis from Situ Kenanga and Situ Mahoni, Universitas Indonesia Campus, Depok. Sampling of water and sediment were carried out at the inlet, midlet, and outlet of both situ. Water samples were filtered using plankton net, sediment samples were taken using Ekman grab and dried using an oven, as many as 15 individual P. pardalis samples were taken using cast net from each situ, then their gills and digestive tract were isolated and pulverized using 65% HNO3. Each sample obtained was dissolved with saturated NaCl solution for flotation to occur. Observations were made using a light microscope and Sedgwick Rafter Chamber to place each sample, by observing the shape, color, and number of microplastic particles. The results showed that the shapes of fibers, films, fragments, granules, as well as transparent, black, blue, and pink colors were found in all samples. The abundance of microplastics in Situ Kenanga water was 48.26 ± 23.51 particles L-1, sediment 45837.04 ± 36305.97 particles Kg-1, gills 290.48 ± 154.58 particles g-1 or 1156, 44 ± 378.69 ind-1 particles, digestive tract 134.37 ± 55.72 particles g-1 or 1364.89 ± 339.54 ind-1 particles. The abundance of microplastics in Situ Mahoni water was 48.63 ± 30.21 particles L-1, sediment 36237.04 ± 16702.60 particles Kg-1, gills 287.23 ± 109.40 particles g-1 or 1153, 78 ± 324.32 ind-1 particles, digestive tract 123.77 ± 34.35 particles g-1 or 1304.44 ± 270.90 ind-1 particles. There was no significant difference between the abundance of microplastics in Situ Kenanga and Situ Mahoni in all samples."

"Telah dilakukan penelitian mengenai penilaian kualitas air secara biologis menggunakan bioindikator makrozoobentos di Situ Agathis dan Situ Salam Universitas Indonesia, Depok pada bulan Februari 2020 yang mewakili musim hujan. Situ Agathis dan Situ Salam merupakan dua situ yang secara berturut-turut merupakan awal dan akhir dari aliran air di situ KAMPUS UI, Depok. Penelitian bertujuan untuk membandingkan kualitas air dengan menggunakan makrozoobentos sebagai bioindikator dengan Family Biotic Index (FBI) dan mengkaji penggunaan indeks keanekaragaman Shannon Wiener dan indeks dominansi Simpson di Situ Agathis dan Situ Salam Universitas Indonesia, Depok. Pengukuran parameter lingkungan fisik-kimia juga telah dilakukan seperti suhu, turbiditas, arus, TSS, TDS, pH, DO, BOD, fosfat dan nitrat. Berdasarkan hasil yang diperoleh, kualitas air di Situ Agathis termasuk kategori sangat buruk dengan nilai FBI berkisar 7,69—9,47 dan Situ Salam tergolong perairan agak buruk dengan nilai FBI sekitar 6,00—6,41. Indeks keanekaragaman di kedua situ tergolong rendah dengan nilai <2,302 dan nilai indeks dominansi <0,5 yang artinya tidak ada jenis makrozoobentos yang mendominansi walaupun beberapa famili ditemukan dalam jumlah individu yang banyak. Berdasarkan analisis data yang telah dilakukan dengan uji statistik Mann Whitney, terdapat perbedaan kualitas air di Situ Agathis dan Situ Salam Universitas Indonesia, Depok. Kualitas air di Situ Salam cenderung lebih baik dibandingkan di Situ Agathis karena adanya sistem cascade pond. Berdasarkan hasil pengukuran parameter fisik-kimia yang telah dilakukan, Situ Agathis dan Situ Salam tergolong dalam perairan yang masih dapat ditoleransi oleh organisme makrozoobentos.

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Research on biological water quality assessment using macrozoobenthos in Situ Agathis and Situ Salam Universitas Indonesia, Depok was conducted on February 2020 which represents the rainy season. The study aimed to compare water quality using macrozoobenthos as bioindicator with the Family Biotic Index and to examine the Shannon Wiener diversity index and the Simpson dominance index in Situ Agathis and Situ Salam Universitas Indonesia, Depok. The measurement of physical and chemical environmental parameters such as temperature, turbidity, flow rate, TSS, TDS, pH, DO, BOD, phosphate and nitrate have also been carried out. Based on the results obtained, the water quality in Situ Agathis was classified as very poor with an average FBI score that ranged between 7.69—9.47 and Situ Salam was classified fairly poor with an average FBI score that ranged between 6.00—6.41. The diversity index in the two locations was classified as low diversity with the score <2.302 while the dominance index score is <0.5 which means there is no dominance even though some families are found in large number of individuals. Based on data analysis that has been carried out with the Mann Whitney statistical test, there are differences in water quality in Situ Agathis and Situ Salam Universitas Indonesia, Depok. The water quality of Situ Salam tends to be better than Situ Agathis due to a cascade pond system. Based on the results of the measurements of physical and chemical environmental parameters that have been carried out, Situ Agathis and Situ Salam are classified as waters that can be tolerated by macrozoobenthos organisms."

"Situ Agathis dan Situ Salam merupakan dua dari enam situ yang berada di dalam wilayah Kampus Universitas Indonesia. Penelitian yang telah dilakukan terdahulu menunjukan bahwa kualitas air di situ-situ UI sudah menurun disebabkan oleh masuknya pencemaran air dari aktivitas manusia sekitar. Limbah air berupa nitrat dan fosfat dari Situ Agathis dapat terbawa hingga Situ Salam, dan berdampak menurunnya kualitas air pada situ tersebut. Penurunan kualitas air akan berdampak pada keberadaan burung air dan sumber pakannya. Penelitian ini bertujuan menilai kualitas air Situ Agathis dan Situ Salam berdasarkan Index Waterbird Community Intergrity (IWCI) dan mengaitkan jenis burung air yang ada pada kedua situ dengan sumber pakannya dan parameter fisika dan kimia perairan. Penelitan dilakukan pada Bulan Agustus-September tahun 2020. Ada 3 spesies burung air yang ditemukan pada kedua situ, yaitu Amaurornis phoenicurus, Alcedo meninting, dan Todirhamphus chloris. Hasil penilaian Index Waterbird Community Integrity (IWCI) pada Situ Agathis adalah 11,14, sedangkan pada Situ Salam adalah 16,29. Nilai tersebut menunjukan bahwa kondisi perairan pada Situ Agathis dan Situ Salam sudah tidak baik untuk menopang kehidupan burung air. Rendahnya nilai IWCI pada kedua situ didukung oleh rendahnya penilaian kualitas air berdasarkan sumber pakan burung air dan kondisi fisika dan kimia perairan tersebut.

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Situ Agathis and Situ Salam are two of the six ponds within Kampus Universitas Indonesia. Studies have shown that the water quality within those ponds has slowly declined over the years due to the intake of water pollution from human activities nearby. Water wastes in the form of nitrate and phosphate can be brought all the way from Situ Agathis to Situ Salam, thus declining the water quality in that pond too. This decline will have an impact on waterbird diversity and its source of food. The purpose of this research is to assess the water quality of Situ Agathis and Situ Salam based on the Index of Waterbird Community Integrity (IWCI) and to link the existence of waterbird species in those two ponds to its source of food, and also to the physical and chemical parameters of the water itself. This research was done during the month of August to September 2020. Three species of waterbirds were found, which are: Amaurornis phoenicurus, Alcedo meninting, dan Todirhamphus chloris. The results of the Index of Waterbird Community Integrity (IWCI) assessment show that Situ Agathis has the score of 11,14, while Situ Salam has the score of 16,29. Those results show that the water condition in both ponds is not good enough to support the life of waterbirds. The low IWCI scores in those two ponds are supported by the similar low scores for water quality assessment based on waterbird’s source of food. It is also supported by the physical and chemical parameters of the water itself."

"Telah dilakukan penelitian yang bertujuan untuk membandingkan kelimpahan, bentuk, dan warna mikroplastik yang terkandung pada air, sedimen, dan keong mas Pomacea canaliculata di Situ Kenanga dan Situ Mahoni, Kampus Universitas Indonesia, Depok. Pengambilan sampel air, sedimen dan keong mas Pomacea canaliculata dilakukan di 3 titik lokasi yaitu inlet, midlet, dan outlet. Sampel air (20 l) disaring dengan plankton net 350 mesh, sampel sedimen dimasukkan ke jar 250 ml menggunakan Ekman grab lalu dioven dan dihaluskan. Sampel keong mas dikoleksi sebanyak 20 sampel setiap Situ, kemudian dianalisis dengan melarutkannya pada HNO3 65%, lalu sampel dijenuhkan dengan NaCl agar mikroplastik dapat mengapung ke permukaan. Sampel dihomogenisasi (20 ml) dan selanjutnya 1 ml diletakkan di Sedgewick Rafter Chamber untuk diamati di bawah mikroskop dan dihitung kelimpahan mikroplastik, bentuk dan warnanya. Hasil dari penelitian, kelimpahan mikroplastik di Situ Kenanga sejumlah 434,33± 23,51 partikel L-1 pada air, 45.837,04 ± 36.305,97 partikel Kg-1 pada sedimen dan 1.320,33 ± 533,91 partikel Ind-1 dan 116,19 ± 37,1 partikel pergram Ind-1 pada keong mas. Kelimpahan mikroplasik di Situ Mahoni pada air sejumlah 437,67 ± 30,21 partikel L-1, pada sedimen sejumlah 36.237,04 ± 16.702,59 partikel Kg-1, dan keong mas sejumlah 1.301,67 ± 200,72 partikel Ind-1 dan 148,38 ± 40,00 partikel pergram Ind-1. Hasil uji t dari sampel air, sedimen dan keong mas perindividu tidak terdapat perbedaan, sedangkan keong mas pergram ind-1 terdapat perbedaan. Bentuk mikroplastik yang ditemukan diantaranya adalah Fiber, fragmen, film, dan granula. Warna mikroplastik didominasi oleh hitam dan tidak berwarna.

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A study was conducted to compare the abundance, shape, and color of microplastics contained in water, sediment, and gold snail Pomacea canaliculata in Situ Kenanga and Situ Mahoni, University of Indonesia Campus, Depok. Sampling of water, sediment and gold snail Pomacea canaliculata was carried out at 3 locations, namely inlet, midlet, and outlet. The water sample (20 l) was filtered with a 350 mesh plankton net, the sediment sample was put into a 250 ml jar using an Ekman grab and then baked and mashed. The gold snail samples were collected as many as 20 samples each Situ, then analyzed by dissolving them in 65% HNO3, then the samples were saturated with NaCl so that the microplastics could float to the surface. The saturated sample was homogenized (20 ml) and then 1 ml was placed in the Sedgewick Rafter Chamber to be observed under a microscope and the microplastic abundance, shape and color were calculated. The results of the study, the abundance of microplastics in Situ Kenanga were 434.33 ± 23.51 particles L-1 in water, 45,837.04 ± 36,305.97 particles Kg-1 in sediments and 1,320.33 ± 533.91 particles Ind-1 and 116.19 ± 37.1 particles per gram Ind-1 in gold snails. The abundance of microplastics in Situ Mahoni in water was 437.67 ± 30.21 particles L-1, in sediments was 36.237.04 ± 16.702.59 particles Kg-1, and golden snails were 1,301.67 ± 200.72 Ind-1 particles and 148.38 ± 40.00 particles per gram Ind-1. The results of the t-test of water, sediment and individual gold snails were not different, while the gold snails per gram were different. The forms of microplastics found included fiber, fragments, films, and granules. The color of microplastics is dominated by black and colorless."

"Telah dilakukan penilaian kualitas air menggunakan ikan sebagai indikator di Situ Salam Kampus Universitas Indonesia Depok, Jawa Barat. Pengambilan sampel dilakukan pada titik inlet, midlet dan outlet dengan dua stasiun pada masing-masing titik. Dari hasil pengamatan didapatkan 5 suku ikan dengan 10 jenis yaitu Channa striata, Amphilophus labiatus, Oreochromis mossambicus, Oreochromis niloticus, Tilapia buttikoferi, Hypostomus plecostomus, Betta splendens, Trichopodus trichopterus, Trichopodus pectoralis, Poecilia reticulata. Berdasarkan hasil pengamatan didapatkan indeks keanekaragaman (H’) pada titik inlet, midlet dan outlet berturut-turut 1,66; 1,88 dan 1,84 yang dikategorikan sedang; hasil indeks dominansi (C) pada titik inlet, midlet dan outlet berturut-turut 0,21; 0,2 dan 0,18 yang juga dikategorikan sedang. Berdasarkan skoring total IBI yang berkisar antara 31-33, mengindikasikan bahwa kesehatan Situ Salam Universitas Indonesia termasuk dalam kategori sedang. Hal ini menggambarkan bahwa Situ Salam Universitas Indonesia telah mengalami perubahan yang disebabkan oleh banyak faktor, terutama aktivitas manusia.

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An assessment of water quality has been carried out using fish as an indicator at Situ Salam University of Indonesia, Depok, West Java. Sampling was conducted at three areas which are inlet, midlet and outlet with two stations at each point. From the observations, it has been obtained 5 families with 10 species, namely Channa striata, Amphilophus labiatus, Oreochromis mossambicus, Oreochromis niloticus, Tilapia buttikoferi, Hypostomus plecostomus, Betta splendens, Trichopodus trichopterus, Trichopodus pectoralis, dan Poecilia reticulata. Based on the observations, the diversity index (H”) at inlet, midlet and outlet was 1.66; 1.88 and 1.84, which were categorized as moderate; The results of the dominance index (C) at inlet, midlet and outlet was 0.21; 0.2 and 0.18 which are also categorized as moderate. Based on the total IBI score, which ranges from 31-33, it shows that the health of Situ Salam University of Indonesia is in the moderate category. This illustrates that the University of Indonesia's Situ Salam has undergone changes caused by many factors, especially human activities."

"Telah dilakukan penelitian penilaian terhadap kualitas perairan menggunakan makrozoobentos pada eceng gondok (Eichhornia crassipes) dengan Family Biotic Index (FBI) dan mengetahui struktur komunitas makrozoobentos di Situ Salam Universitas Indonesia. Situ Salam berada di bagian utara kampus UI. Berdasarkan parameter fisika-kimia yang dilakukan yaitu hasil suhu yaitu 28,66—30⁰C, hasil turbiditas yaitu 6,9—8 NTU, hasil kecepatan arus yaitu 0,012—0,071 m/s,hasil dissolved oxygen (DO) yaitu 6,58—9,87 mg/L, hasil derajat keasaman (pH) yaitu 6,79—7,11, hasil kecerahan air yaitu 82—93,66 cm, hasil kedalaman yaitu 179—318,33 cm, hasil nitrat yaitu 0,58—2 mg/L, dan hasil fosfat yaitu 0,47—1,48 mg/L. Berdasarkan hasil FBI, kualitas perairan Situ Salam tergolong kategori buruk dengan nilai FBI berkisar 6,42—6,64. Berdasarkan hasil struktur komunitas makrozoobentos, indeks keanekaragaman tergolong tinggi dengan nilai < 2,50, indeks dominansi tergolong rendah dengan nilai < 0,26 yang menandakan jenis makrozoobentos tidak ada yang mendominansi, indeks Evenness tergolong merata dengan nilai < 0,90 dan indeks kelimpahan berkisar antara 0,2—34,4 ind/tanaman. Berdasarkan hasil dilakukan di Situ Salam parameter fisika-kimia tergolong dalam perairan yang masih dapat ditoleransi oleh makrozoobentos.

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An assessment of water quality has been carried out using macrozoobenthos on water hyacinth (Eichhornia crassipes) with the Family Biotic Index (FBI) and to determine the structure of the macrozoobenthos community in Situ Salam, Depok, West Java. Situ Salam is a lake that has a parallel flow from south to north which has a series with Situ Puspa and Situ Ulin. Situ Salam is located in the northern part of the UI campus near the Makara Dormitory, University of Indonesia and comes from the water input of Situ Agathis. Measurements of physico-chemical environmental parameters were carried out namely, temperature with a yield of 28.66—30⁰C, turbidity with a yield of 6.9—8 NTU, current velocity with a yield of 0.012—0.071 m/s, dissolved oxygen (DO) with a yield of 6.58—9,87 mg/L, degree of acidity (pH) with a yield of 6.79—7.11, water brightness with a yield of 82—93.66 cm, depth with a yield of 179—318.33 cm, the nitrate with a yield of 0.58—2 mg/L, and phosphate with a yield of 0.47—1.48 mg/L. Based on the results of the FBI, the water quality of Situ Salam is classified as poor with an FBI value ranging from 6.42—6.64. The diversity index is low with a value of < 2.50, the dominance index is low with a value of < 0.26 which indicates that no macrozoobenthos species dominates, the Evenness index is evenly distributed with a value of < 0.90 and abundance index ranged from 0.2-34.4 ind/plant. Based on the results of measurements of physico-chemical parameters that have been carried out, Situ Salam is classified in waters that can still be tolerated by macrozoobenthos."