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Abstrak :
Penelitian tentang struktur komunitas makrozoobentos dalam ekosistem mangrove telah dilakukan di Cilamaya Wetan, Karawang, Jawa Barat pada Mei 2019. Penelitian ini bertujuan untuk menentukan struktur komunitas makrozoobentos seperti komposisi, kepadatan, keanekaragaman, kerataan, kerataan, dominansi, dan frekuensi kehadiran. . Tujuan lain adalah untuk menentukan hubungan antara kepadatan bakau dengan kepadatan dan keanekaragaman makrozoobentos di daerah tersebut. Pengambilan sampel dilakukan dengan purposive sampling dan menggunakan metode transek kuadrat di tiga stasiun, yaitu Desa Muara Baru, Desa Tangkolak Barat, dan Desa Tangkolak Timur. Studi ini menemukan 16 jenis makrozoobentos dan 7 jenis bakau dengan kepadatan yang sangat padat (0,23-0,32 ind / m2). Kepadatan makrozoobentos tertinggi di Desa Tangkolak Barat (8 ind / m2) dan terendah di Desa Muara Baru (2 ind / m2). Keragaman makrozoobentos tergolong tinggi di Desa Tangkolak Barat dengan indeks 1,58 dan Desa Tangkolak Timur dengan indeks 2,05, sedangkan keragaman tergolong rendah di Desa Muara Baru dengan indeks 0,28. Distribusi makrozoobentos diklasifikasikan hampir terdistribusi secara merata di Desa Tangkolak Barat dan Desa Tangkolak Timur dengan indeks kegagangan masing-masing 0,88 dan 0,85, sementara itu didistribusikan secara merata di Desa Muara Baru dengan indeks kegagahan 0,59. Data menunjukkan tidak ada spesies yang mendominasi di Desa Tangkolak Barat dan Desa Tangkolak Timur, kecuali di Desa Muara Baru. Episesarma palawanense adalah macrozoobenthos yang memiliki frekuensi kehadiran tertinggi di Desa Muara Baru dengan frekuensi 27,7%. Parameter lingkungan termasuk suhu, pH, dan salinitas dianggap sebagai kategori normal untuk makrozoobentos dan kehidupan bakau. Hasil penelitian menunjukkan bahwa kepadatan bakau berhubungan dengan kepadatan dan keanekaragaman makrozoobentos.

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Research on the structure of macrozoobenthos communities in mangrove ecosystems has been conducted in Cilamaya Wetan, Karawang, West Java in May 2019. This study aims to determine the structure of macrozoobenthos community such as composition, density, diversity, flatness, flatness, dominance, and frequency of attendance. . Another goal is to determine the relationship between mangrove density and the density and diversity of macrozoobenthos in the area. Sampling was carried out by purposive sampling and using the quadratic transect method at three stations, namely Muara Baru Village, West Tangkolak Village, and East Tangkolak Village. This study found 16 types of macrozoobenthos and 7 types of mangrove with very dense density (0.23-0.32 ind / m2). The highest density of macrozoobenthos is in West Tangkolak Village (8 ind / m2) and the lowest in Muara Baru Village (2 ind / m2). The diversity of macrozoobenthos is relatively high in the village of West Tangkolak with an index of 1.58 and the village of East Tangkolak with an index of 2.05, while the diversity is relatively low in the village of Muara Baru with an index of 0.28. The distribution of macrozoobenthos is classified almost evenly in the Village of West Tangkolak and the Village of East Tangkolak with a trade index of 0.88 and 0.85 respectively, while it is distributed equally in the Muara Baru Village with a pride index of 0.59. Data shows that there are no species that dominate in the villages of West Tangkolak and East Tangkolak, except in Muara Baru Village. Palawanense Episesarma is macrozoobenthos which has the highest attendance frequency in Muara Baru Village with a frequency of 27.7%. Environmental parameters including temperature, pH, and salinity are considered normal categories for macrozoobenthos and mangrove life. The results showed that mangrove density was related to macrozoobenthos density and diversity.

Abstrak :
Studi tentang struktur komunitas makrozoobentos dan kualitas perairan telah dilakukan di Waduk Krenceng pada November 2002 dan Maret 2003 yang masing-masing mewakili bulan November 2002 dan bulan Maret 2003. Makrozoobentos diambil dengan Peterson Grab dan kualitas air ditentukan dengan Indeks Storet dan Indeks Keanekaragaman. Dari hasil Identifikasi ditemukan 6 jenis makrozoobentos yang terdiri dari: Oligochaeta (3 jenis) dan In sect a (3 jenis). Kelimpahan jenis berkisar antara 3-2254 ind/nT dan didominasi oleh Aloudrilus pigueti Kowalewski, keanekaragaman jenis berkisar antara 0,76-1,67, dan penyebaran jenis mengelompok, kecuali Chironomus sp. yang menyebar acafc. Berdasarkan Indeks Storel, kualitas perairan Waduk Krenceng termasuk katagori tercemar sedang sampai sangat baik sedangkan dengan Indeks Keanekaragaman termasuk katagori tercemar sedang sampai tercemar berat. Kesesuaian antara indeks Storet dan Indeks keanekaragaman adalah 67% sehingga Indeks Keanekaragaman dapat digunakan untuk menilai kualitas perairan Waduk Krenceng.

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Community Structure Of Macrobenthic Faunas And Water Quality Of Waduk Krenceng In Cilegon, Banten: Community structure of macrobenthic faunas and water quality assessment was studied in Waduk Krenceng on November 2002 (dry month) and Maret 2003 (wet month). Macrobenthic fauna dredged by Peterson grab, water quality assessment used Storet index and Diversity index. From the result of macrobenthic identification, six species of two classes and 3 families were found: Oligochaeta 3 species and In sect a 3 species. Species abundance ranging from 3 to 2254 ind/ha and species diversity ranging from 0,76 to 1,67. tutodrilus pigueti Kowalewski (Oligochaeta: Tubificidae) showed the highest abundance both in November 2002 (dry month) and March 2003 (wet month). The result of dispersion analysis showed that the dispersion of all macrobenthic species in Waduk Krenceng is aggregated, except Chironomus sp. that is random dispersion. The physico-chemical condition showed that water quality of Waduk Krenceng ranging from moderatly polluted to standard for clean water condition. Based on diversity index of macrobenthic fauna showed that water quality ranging from heavily polluted to moderatly polluted. There are 67% equivalency between Storet indeks and Diversity Index. Therefore Diversity index can be used to evaluate water quality at Waduk Krenceng.

Abstrak :
Telah dilakukan sampling makrozoobentos di Sungai Cengek bagian hulu yang melintasi Desa Payaman, Kota Salatiga pada bulan April 2013. Pengambilan sampel dilakukan dengan cara mengoleksi makrozoobentos, pada daerah sebelum percabangan, percabangan sebelah timur, dan percabangan sebelah barat. Sampel yang diperoleh diawetkan dengan alkohol 70% kemudian diidentifikasi di Laboratorium Taksonomi Hewan, Departemen Biologi FMIPA UI, Depok. Masing-masing pengambilan sampel dilakukan sebanyak dua pengulangan. Data hasil penelitian ditabulasi dan digunakan untuk penilaian kualitas perairan dengan indeks biotik. Berdasarkan hasil penelitian, diperoleh empat kelompok makrozoobentos yang dikelompokkan dalam Famili Heptageniidae, Libellulidae, Palaemonidae, dan Pachychilidae. Indeks eanekaragaman tergolong rendah, berkisar antara 0,42--0,9 dengan indeks dominansi berkisar 0,49--0,75. Berdasarkan indeks biotik diketahui bahwa kualitas perairan Sungai Cengek bagian hulu masuk ke dalam kategori perairan dengan kondisi yang baik, dengan nilai ASPT berkisar 6,25--6,5.

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Sampling of macrozoobenthos has been held at the upstream of Cengek River that crosses Payaman Village, Salatiga City in April, 2013. Sampling was carried out by collecting macrozoobenthos at the area before branching, eastern branching, and western branching of Cengek River. Samples that collected was preserved by 70% ethanol, and identified in Laboratory of Animal Taxonomy, Department of Biology, Faculty of Mathematics and Natural Science, University of Indonesia, Depok . Each sampling was performed two repetitions. The data were tabulated and used to measure the water quality by biotic index. Results of the research was found four group of macrozoobenthos that divided into family of Heptageniidae, Libellulidae, Palaemonidae, and Pachychilidae. The level of diversity rated low, ranged from 0,42 to 0,9 and dominancy index ranged from 0,49 to 0,75. Based on biotic index, the waterways quality of Cengek River upstream were divided into the fine condition river, with ASPT rate ranged from 6,25 to 6,5.

Abstrak :
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. ......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.

Abstrak :
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. ......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.