Komposisi dan Struktur Komunitas Zooplankton di Danau Diatas, Sumatera Barat

Penelitian tentang komposisi dan struktur komunitas zooplankton pada di Danau Diatas, Solok Sumatera Barat telah dilakukan pada bulan April sampai September 2016. Penelitian ini bertujuan untuk mengetahui komposisi dan struktur komunitas zooplankton di Danau Diatas kabupaten Solok, Sumatera Barat. Penelitian ini menggunakan metoda Purposive Sampling di empat stasiun. Sampel Zooplankton diambil menggunakan pompa air Alkon dan planktonnet. Zooplankton yang didapatkan 44 spesies dengan komposisi Protozoa 5 spesies, Rotifera 22 spesies, Cladocera 13 spesies, dan Copepoda 4 spesies. Kepadatan total 20683,58 ind/l. indeks diversitas di Danau Diatas yaitu berkisar 1,043 -1,45. Indeks equitabilitas berkisar 0,31-0,54. Berdasarkan strata indeks equitabilitas berkisar 0,42-0,52, dan komunitas antar stasiun relatif seragam dengan indeks similaritas 53,06-61,53%. Study of composition and community structure zooplankton of Diatas Lake, Solok District, West Sumatera, from April until September 2016. The purpose of this research was to know the composition and structure of zooplankton. The research was conducted by using Purposive Sampling method with four research station. the samples by using water pomp machine and plankton net. The result showed that zooplankton it was found 44 zooplankton species with composition of Protozoa 5 species, 22 species of Rotifers, 13 species of Cladocera, and 4 species Copepods. The population diversity average 1723,6 ind/l. diversity index (H’) ranged from 1,04 – 1,45, Equitability index (E) ranged from 0,31-0,54, Sorensen Similarity index ranged from 53,06 – 61,53 %.

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KOMPOSISI DAN STRUKTUR KOMUNITAS ZOOPLAKTON DI DANAU TALAGA, SULAWESI TENGAH

Biocelebes ◽

10.22487/bioceb.v14i3.15418 ◽

2020 ◽

Vol 14 (3) ◽

pp. 210-216

Author(s):

Melisa Melisa ◽

Asri Pirade Paserang

Keyword(s):

Community Structure ◽

Sampling Method ◽

Diversity Index ◽

Zooplankton Abundance ◽

Dominance Index ◽

Dominant Type ◽

Purposive Sampling ◽

Composition And Structure ◽

Central Sulawesi

Study of composition and community structure of zooplankton in Talaga Lake was conducted from February to March 2019. The aimed of this research was to know the composition and structure of zooplankton in Talaga lake, Central Sulawesi. Samples were collected at four station by using purposive sampling method. The identification results have found 4 genus of zooplankton with each composition 71 % of Cyclops, 22 % of Daphnia, 0,34 % of Paramecium and 6,64 % of Chaoborus. The zooplankton abundance is around 11.6-17.2 ind/l. Community structure of zooplankton in Talaga Lake is unstable which shows by the low value of diversity index (0.68 to 0.8) and uniformity index (0,49-0,57). The value of dominance index which is in range 0.51-0.58 has also shown that there is dominant type of zooplankton.

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Makrozoobenthos Gastropoda pada Vegetasi Mangrove di Pesisir Utara, Semarang

BULETIN OSEANOGRAFI MARINA ◽

10.14710/buloma.v8i1.22453 ◽

2019 ◽

Vol 8 (1) ◽

pp. 37

Author(s):

Haryo Farras Raditya Hutama ◽

Retno Hartati ◽

Ali Djunaedi

Keyword(s):

Community Structure ◽

Sampling Method ◽

Diversity Index ◽

Secondary Data ◽

Mangrove Ecosystem ◽

Sampling Location ◽

Research Station ◽

Purposive Sampling ◽

Data Density ◽

Index Value

Kerusakan hutan mangrove yang terjadi karena adanya aktivitas manusia cukup mengkhawatirkan dan berpengaruh terhadap kelangsungan hidup biota yang hidup didalamnya, salah satunya adalah Gastropoda. Penelitian ini dilakukan untuk mengetahui komposisi jenis makrozoobenthos gastropoda dan menganalisa struktur komunitasnya. Pengambilan sampel dilaksanakan pada bulan Maret 2015 di 4 lokasi yakni Mangunharjo, Mangkang Wetan, Pantai Maron dan Trimulyo, Semarang. Penentuan lokasi sampling dengan metode purposive sampling method terbagi dari kelebatan mangrove lebat, sedang dan jarang pada setiap lokasi penelitian dengan pertimbangan pengaruh aliran sungai terhadap parameter disetiap stasiunnya.Klasifikasi kelebatan mangrove berdasarkan data sekunder kerapatan mangrove Pesisir Utara Semarang 2015. Pengambilan sampel gastropoda menggunakan metode kualitatif dengan transek 5m x 5m dan 1m x 1m dengan jumlah stasiun sebanyak 8 dan 3 kali pengulangan pada setiap stasiunnya. Hasil penelitian ditemukan 8 jenis spesies yang terdiri dari 4 famili yang berbeda.Famili Potamididae paling banyak ditemukan dengan jumlah 4 spesies. Ditemukan satu spesies Famili Neriitidae yakni Nerita sp. serta satu spesies Famili Ellobiidae yakni Cassidula sp.. Kelimpahan tertinggi terdapat pada Stasiun MR1 (25.667 ind./75m2) dan terendah distasiun MW3 (0.107 ind./75m2). Nilai Indeks Keanekaragaman masuk dalam kategori sedang, sedangkan nilai indeks keseragaman dalam kategori tinggi.Dalam penelitian ini menemukan spesies yang mendominasi pada 2 stasiun yaitu Stasiun MW1 dan MR1. The damage of the mangrove ecosystem which occur due to human activity is quite alarming and effect on the survival of biota that lived in it, one which is Gastropods. This research was conducted to find out the composition of macrozoobenthos gastropods and analyze its community structure. Sampling did on March 2015 at 4 locations, i.e., Mangunharjo, Mangkang Wetan, Maron and Trimulyo, Semarang. This study was conducted to determine and identify the community structure of gastropod macrozoobenthos in mangrove vegetation on the coast of Semarang The determination of sampling location use purposive sampling method that divide the dense mangrove luxuriance, moderate and rarely at location research. The dense mangrove classification based on secondary data from the landsat image of 8 and the data density of mangrove North Coastal Semarang 2015. Sampling use qualitative method with 5 m x 5 m transects and 12 stations with three-time repetitions for each stations. The results found gastropods 8 types of species comprising in 4 different families. Potamididae family is the most dominant where found 4 species. One species of Neriitidae family is found which Nerita sp. and one species of the Ellobidae family is also found, which Cassidula sp.. The highest abundance was found on Station MR1 (25.667 ind./75m2) and the lowest in station MW3 (0.107 ind./75m2). The value of the Diversity Index can be category as average while the Equitability Index value is high. In this study, found there is 2 dominance species on the whole research station, one at MW1 and the other at MR1.

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INVENTARISASI JENIS DAN STRUKTUR EKOLOGI ZOOPLANKTON DI SUNGAI MUSI BAGIAN HILIR, SUMATERA SELATAN

Jurnal Penelitian Perikanan Indonesia ◽

10.15578/jppi.14.3.2008.263-271 ◽

2017 ◽

Vol 14 (3) ◽

pp. 263

Author(s):

Eko Prianto ◽

Husnah Husnah ◽

Siti Nurul Aida

Keyword(s):

Sampling Method ◽

Field Survey ◽

Diversity Index ◽

Similarity Index ◽

Survey Method ◽

Zooplankton Species ◽

Dominance Index ◽

Purposive Sampling ◽

The Difference ◽

Set Up

Penelitian yang bertujuan untuk mengetahui struktur komunitas zooplankton di Sungai Musi bagian hilir telah dilakukan pada bulan Mei, September, dan Januari 2007. Penelitian dilaksanakan dengan menggunakan metode survei pada 9 lokasi. Pemilihan lokasi pengambilan contoh dengan menggunakan purposive sampling didasarkan pada mikrohabitat. Contoh zooplankton diambil dengan menggunakan ember 10 l dan total volume yang disaring dengan plankton net 150 l. Parameter yang diukur meliputi kelimpahan, komposisi jenis, keragaman, keseragaman, dan indeks dominasi zooplankton. Hasil analisis jumlah spesies zooplankton yang tertinggi dijumpai pada bulan September dan terendah pada bulan Mei. Indeks keragaman dan kelimpahan zooplankton pada Mei 2006 dan Januari 2007 berkisar antara 0 sampai dengan 2,2 dan 0,8 sampai dengan 21x103 ind.m-3. Indeks keseragaman bervariasi. Nilai yang tertinggi diperoleh pada bulan Januari (0,8 sampai dengan 1), sedangkan bulan Mei dan September 2006. Pada September dan Mei lebih bervariasi dengan kisaran nilai masing-masing 0,6 sampai dengan 1 dan 0,6 sampai dengan 0,9. Selanjutnya untuk dominasi jenis, terdapat 2 stasiun yaitu Sebokor (bulan Mei) dan Selat Cemara (bulan September), yang didominasi 1 jenis zooplankton. Research with aiming to know the community structure of zooplankton at the down stream of Musi Rivers was conducted in May and September 2006, and January 2007. The work was done with field survey method at nine sampling sites, that were set up by using purposive sampling method based on the difference an microhabitat. Samples for zooplankton were collected by using 10 l bucket to sample a total of 150 l of water, and the total volume of wals filtered by using plankton net. Parameters measured include the abundance, spesies composition, diversity, similarity, and dominance index of zooplankton. Results show that the highest number of zooplankton species was found in September while the lowest one was recorded in May. The diversity index and abundance zooplankton in May 2006 and January 2007 were between 0 until 2.2, and 0.8 until 21x103 ind.m-3, respectively. The similarity index varied. The highest value was recorded in january (0.8 until 1) while in may and september 2006 were 0.6 until 1 and 0.6 until 0.9, respectively. Zooplankton was dominanted sebokor and cemara sampling sites.

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Struktur Komunitas Fitoplankton di Kolam Bekas Pertambangan Batubara Desa Kampung Baru Kecamatan Cempaka

BIOSCIENTIAE ◽

10.20527/b.v17i2.3451 ◽

2021 ◽

Vol 17 (2) ◽

pp. 37

Author(s):

Sukoco Sukoco ◽

Gunawan Gunawan ◽

Muhamat Muhamat

Keyword(s):

Community Structure ◽

Coal Mining ◽

Sampling Method ◽

Diversity Index ◽

Pool Analysis ◽

Fertility Rate ◽

The State ◽

Purposive Sampling ◽

Phytoplankton Communities ◽

Average Abundance

This study aims to determine the structure of phytoplankton communities in the pool are former coal mining Desa Kampung Baru Kecamatan Cempaka which include abundance, diversity, uniformity and dominance. Phytoplankton samples taken in two pools with a purposive sampling method with a three-point shooting at each pond. Sampling was performed three times. Phylum of phytoplankton were identified in both pools as much as 2 phylum (Chloropyta and Chrysopita) with 17 genera. Average abundance of phytoplankton in the first pool of 7174 ind / liter and 6873 ind / liter in the second pool. The average diversity index of phytoplankton in the first pool of 1.540 and 1.621 in the second pool. Average uniformity index of phytoplankton in the first pool of 0622 and 0.623 in the second pool. The average index of phytoplankton dominance in the first pool of 0271 and 0250 in the second pool. Analysis of community structure (abundance, diversity, uniformity and dominance) shows the condition of the two ponds in the state is quite stable and capable of supporting life inside the phytoplankton. Where the pool in the fertility rate is the level of contamination is, the conditions included in the category of individuals spread more evenly and there are no species that dominate other species in the extreme.

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Molluscs Diversity in Coastal Ecosystem of South Biak, Papua

Oseanologi dan Limnologi di Indonesia ◽

10.14203/oldi.2017.v2i1.75 ◽

2017 ◽

Vol 2 (1) ◽

pp. 25 ◽

Cited By ~ 1

Author(s):

Ludi Parwadani Aji ◽

Andriani Widyastuti

Keyword(s):

Species Richness ◽

Community Structure ◽

Sampling Method ◽

Diversity Index ◽

Similarity Index ◽

Coastal Areas ◽

Seagrass Beds ◽

Simpson Index ◽

Transect Line ◽

Evenness Index

Coastal areas of Biak Island consist of three major ecosystems: the mangrove, seagrass beds, and coral reefs where a variety of molluscs live. Mollusc diversity in South Biak waters was investigated in September 2011. The observation was conducted at 4 locations, i.e. Paray, Ambroben, Yenures, and Sorido with 2 stations at each location. The study aimed to obtain information on the diversity and community structure of the benthic molluscs (gastropods and bivalves) on the coastal areas of South Biak waters. Sampling method applied was quadrate-transect line in intertidal areas from inshore to offshore. The molluscs (epifauna and infauna) found inside the quadrate-transect were counted and identified. The result showed high benthic mollusc diversity with a total of 94 species, consisting of 75 species of gastropods and 19 species of bivalves. The most widespread gastropod found in all stations was Nassarius sp., while for bivalves was Tellina sp. The highest value of diversity index (H) was 2.96 found in Paray 1 and the lowest was 0.58 in Yenures 1. The Evenness index (E) and Simpson index (D) ranged from 0.27 to 0.96 and from 0.06 to 0.72 respectively. Species richness (d) ranged from 2.89 to 6.84 and similarity index from 3.90 to 42.40.

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Zonasi, Keanekaragaman, dan Pola Migrasi Ikan di Sungai Keyang, Kabupaten Ponorogo, Jawa Timur

Jurnal Ilmu Lingkungan ◽

10.14710/jil.16.1.78-85 ◽

2018 ◽

Vol 16 (1) ◽

pp. 78

Author(s):

Vivin Alfyana Yulia Pratami ◽

Prabang Setyono ◽

Sunarto Sunarto

Keyword(s):

Sampling Method ◽

Poecilia Reticulata ◽

Diversity Index ◽

Similarity Index ◽

Fish Migration ◽

Environmental Condition ◽

Anabas Testudineus ◽

Purposive Sampling ◽

Channa Striata ◽

And Migration

Zonasi, Keanekaragaman dan Pola Migrasi Ikan di Sungai Keyang, Kabupaten Ponorogo, Jawa TimurVivin Alfyana Yulia Pratami1, Prabang Setyono2, Sunarto31Program Studi Biosain, Fakultas Pascasarjana, Universitas Sebelas Maret Surakarta, email: [email protected] Universitas Sebelas Maret Surakarta (email: [email protected])3Pascasarjana Universitas Sebelas Maret Surakarta (email: [email protected]) ABSTRAKIkan adalah salah satu biota air yang rentan terhadap perubahan kondisi lingkungan, sehingga dapat digunakan sebagai indikator lingkungan. Penelitian ini bertujuan untuk mengetahui zonasi, keanekaragaman, serta pola migrasi ikan di Sungai Keyang, Kabupaten Ponorogo. Penelitian dilakukan pada bulan Oktober-November 2017 dengan metode purposive sampling pada 3 stasiun pengamatan. Pengukuran faktor fisika kimia air meliputi suhu, pH, DO, BOD, CO2, kekeruhan, kecerahan, serta padatan terlarut (TDS). Hasil penelitian yang diperoleh yaitu di Sungai Keyang terdapat 6 famili dan 11 spesies ikan. Famili tersebut adalah Poecilidae, Cyprinidae, Balitoridae, Sisoridae, Anantidae, serta Channidae. Spesies yang ditemukan yaitu Poecilia reticulata, Rasbora argyrotaenia, Rasbora dusonensis, Rasbora paviana, Rasbora tornieri, Puntius amphibious, Poropontius tawarensis, Nemacheilus fasciatus, Glyptothorax platypogon, Anabas testudineus, dan Channa striata. Spesies yang memiliki nilai kepadatan tertinggi yaitu P. reticulata sebanyak 39 individu dan R. dusonensis sebanyak 27 individu pada stasiun 2 dan 17 individu pada stasiun 3. Indeks keanekaragaman ikan pada semua stasiun termasuk dalam kategori sedang yaitu secara berturut-turut 1,57; 1,80; dan 1,45. Indeks kemerataan ikan di semua stasiun termasuk dalam kategori tinggi yaitu 1,64; 1,73; dan 1,87, sedangkan indeks dominansi ikan termasuk dalam kategori rendah yaitu secara bertutut-turut 0,28; 0,23; dan 0,28. Simpulan dari penelitian ini adalah zonasi persebaran ikan di Sungai Keyang didominasi oleh genus Poecillia dan Rasbora, keanekaragaman ikan termasuk dalam kategori sedang, serta pola migrasi masing-masing spesies ikan berbeda yaitu ada yang selalu di tepi dan ada yang menyebar baik untuk tujuan reproduksi atau mencari makan.Kata kunci: keanekaragaman ikan, pola migrasi ikan, Sungai Keyang, zonasiABSTRACTFish is one of the water organism that susceptible to change of environmental condition, so it is can be used as bioindicator of environmental pollution. This research is purposed to determine the spread zonation, diversity, and migration structure of fish in Keyang River, Ponorogo Regency. Sample was conducted in October-November 2017with purposive sampling method in 3 observation stations. The results of this research were 6 families and 11 species. The families are Poecilidae, Cyprinidae, Balitoridae, Sisoridae, Anantidae, and Channidae. The species were found Poecilia reticulata, Rasbora argyrotaenia, Rasbora dusonensis, Rasbora paviana, Rasbora tornieri, Puntius amphibious, Poropontius tawarensis, Nemacheilus fasciatus, Glyptothorax platypogon, Anabas testudineus, and Channa striata. The highest density species are P. reticulata with 39 individual and R.dusonensis with 27 individual at station 2 and 17 individual at station 3. The diversity index of fish in all observation stations was included in medium category (1,57; 1,80; and 1,45). The similarity index (Evennes index) in all stations was included in high category (1,64; 1,73; and 1,87). The Simpson’s index in all stations was included in low category (0,28; 0,23; and 0,28). The conclusions of this research are Poecillia and Rasbora was dominated the fish spread zonation, diversity of gastropods in Keyang River included in medium category, and each spesies had different migration structure, that are at the side or spead of the river with the purpose for reproduction or looking for food.Keywords: fish biodiversity, fish migration structure, Keyang River, zoningCitation: Pratami, V. A. Yulia., Setyono, P dan Sunarto. (2018). Zonasi, Keanekaragaman Dan Pola Migrasi Ikan Di Sungai Keyang, Kabupaten Ponorogo, Jawa Timur. Jurnal Ilmu Lingkungan. 16(1), 78-85, doi:10.14710/jil.16.1.78-85

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Study of Molluscs Diversity as Ecosystem Engineer from Beach of Sungai Bakau Village, Tanah Laut, South Kalimantan

Indonesian Journal of Biotechnology and Biodiversity ◽

10.47007/ijobb.v4i2.65 ◽

2020 ◽

Vol 4 (2) ◽

pp. 77-88

Author(s):

Anang Kadarsah ◽

Cynthia Agustina Ekaputri ◽

Abdul Gafur

Keyword(s):

Sampling Method ◽

Ecosystem Engineer ◽

Diversity Index ◽

Similarity Index ◽

Sandy Beaches ◽

Research Station ◽

Water Parameters ◽

The Difference ◽

And Function ◽

Sand Dust

Molluscs are engineered biota that play an important role in changing the structure and function of ecosystems, including coastal and mangroves. This study aims to record the diversity of molluscs as a group of engineers in coastal areas in Sungai Bakau Village, Tanah Laut, South Kalimantan. Purposive random sampling method was used to obtain mollusc data at three observation stations (Station 1 : sandy beaches, Station 2 : rocky beaches, and Station 3 : river estuaries). Only one type of bivalve was found (Meretirix meretrix) and 13 types of gastropods (Nassarius Sp., Turricula javana, Cerithidea alata, Polygona angulate, Distorsio decipiens, Latirus pictus, Bursa granularis, Latirus sp., Littorina undulate, Naticarius hebraeus, Murex. elenensis, Neverita didyma, and Turritella terebra). The highest diversity index (1.95) was found at station 1. While the evenness index is 0.755. Similarity index was 92.85% (stations 1-2 and stations 1-3) while at stations 2-3 was 85.71%. The highest density of Cerithidea alata is reached 2,996,700 ind/Ha and the least was Turritella terebra (20,000 ind/Ha). Water parameters between observation stations were close to each other : pH ± 7.6 - 7.7, temperature ± 29.3 - 29.7 0C, and salinity ± 34.9 - 35.4 ppt. The difference between research stations can be seen from sediment content. Station 1 has the highest sand content (96.2%). Station 2 consists of 64.7% sand dust and 20.6% clay. Station 3 has the highest dust content, reaching 84.6%. The types and presence of mollusks (bivalves and gastropods) at each research station is vary in value.

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Keragaman Populasi Pohon Asam (Tamarindus indica L.) di Jalan Raya Socah-Arosbaya, Kabupaten Bangkalan dan Strategi Konservasi

Rekayasa ◽

10.21107/rekayasa.v11i2.4446 ◽

2018 ◽

Vol 11 (2) ◽

pp. 95

Author(s):

Eko Setiawan

Keyword(s):

Sampling Method ◽

Diversity Index ◽

Population Diversity ◽

Conservation Strategies ◽

Biological Research ◽

Tamarindus Indica ◽

Dry Land ◽

Purposive Sampling ◽

Tree Population

Pohon asam (Tamarindus indica) sangat sesuai untuk peneduh dan lanskaping karena bentuk tajuknya rindang, daunnya kecil-kecil, rantingnya kuat dan tidak mudah patah. Tujuan dari penelitian ini adalah untuk mengetahui populasi pohon asam di sepanjang Jl. Raya Socah-Arosbaya, Kabupaten Bangkalan. Survei dilaksanakan pada Juni-Agustus 2018 dengan metode purposive sampling mulai dari jalan raya Socah dengan koordinat 7°05'48.6"LS 112°42'44.3"BT sampai Jalan raya Gebang Arosbaya yang berada di koordinat 6°58'57.3"LS 112°47'38.0"BT. Hasil penelitian menunjukkan populasi pohon asam sepanjang Jl. Raya Socah-Arobaya hanya ada 102 tanaman (5.03%) dengan indeks biodiversitas sebesar 0.1509. Pohon asam perlu dilestarikan karena selain bernilai sejarah juga sebagai tempat endemik anggrek Vanda limbata dan kepentingan penelitan biologi di lahan kering.Kata Kunci: Bangkalan, indeks biodiversitas, peneduh, pohon asam, Tamarindus indicaPopulation Diversity of tamarind (Tamarindus indica L.) populations in Socah-Arosbaya Highway, Bangkalan District and Conservation Strategies ABSTRACTThe tamarind tree (Tamarindus indica) is very suitable for shade and landscape because the the canopy is shady, the leaves are small, the branches are strong and not easily broken. The purpose of this study was to determine the tamarind tree population along Socah-Arosbaya highway, Bangkalan district. The survey was done in June-August 2018 with purposive sampling method, starting from Socah highway with coordinates 7°05'48.6"S 112°42'44.3"E to Gebang Arosbaya highway located at coordinates 6°58'57.3"S 112°47'38.0"E. The results showed the tamarind tree population along Socah-Arobaya highway there are only 102 plants (5.03%) with a diversity index was 0.1509. Tamarind trees need to be conserved because in addition to historical value as well as a place of Vanda limbata orchids and the importance of biological research on dry land.

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STUDY ON MACROZOOBENTHOS COMMUNITY IN THE WATERS OF THE RIVER AIR PERIKAN MUNICIPALITY OF PAGAR ALAM SOUTH SUMATRA

BIOVALENTIA Biological Research Journal ◽

10.24233/biov.3.2.2017.73 ◽

2017 ◽

Vol 3 (2) ◽

Author(s):

Rafles Tampubolon ◽

Zazili Hanafiah ◽

Endri Junaidi

Keyword(s):

Species Composition ◽

Sampling Method ◽

Diversity Index ◽

Similarity Index ◽

Survey Method ◽

Research Station ◽

Sampling Station ◽

Sampling Point ◽

Leaf Pack ◽

Index Value

The research entitled “ Study on Macrozoobenthos Community in the Waters of the River Air Perikan Pagar Alam Municipality”, was conducted from November 2007 until March 2008. The aims of the research: to know about composition, density, diversity index, dominancy index, and similarity index, which based on the different microhabitat types. Sampling was carried out on November 2007. Five sampling stations were determined by survey method and the Purposive Sampling method was used at each sampling point to find stony, gravel, sandy and leaf pack area as a different microhabitat substrate. Twenty one orders (Ephemeroptera, Trichoptera, Diptera, Plecoptera, Collembola, Hemiptera, Odonata, Coleoptera, Lepidoptera, Megaloptera, Hymenoptera, Orthoptera, Decapoda, Plesiopora, Tricladida, Amphipoda, Isopoda, Mesogastropoda, Ctenobranchiata, Eulamellibranchiata, and Rhynchobdellida) which are consisted of 70 families and 151 genera were identified from four types of substrates on each sampling station. According to this research, station 4 has the highest in composition (80 genera), and the lowest one at station 1(33 genera). The highest abundance was 12589 ind./m2 found in the station 5, and the lowest one was in the station 1 approximately 880 ind./m2. For the diversity index value, station 3 was the highest (3.1) and the lowest one was station 5 (1.9). The Dominancy index was found in station 5 at the sandy substrates was approximately 0,8 index, which dominated by Tubifex sp. There were differences species composition on each station. Keywords : Macrozoobenthos, community, the river Air Perikan.

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The Perifiton Alga Community in Masang Kecil River Receives Liquid Palm Oil Mill Waste in Kinali District, West Pasaman Regency

JURNAL BIOLOGI UNAND ◽

10.25077/jbioua.7.2.100-108.2019 ◽

2019 ◽

Vol 7 (2) ◽

pp. 100

Author(s):

Vivi Safitri ◽

Izmiarti Izmiarti ◽

Jabang Nurdin

Keyword(s):

Palm Oil ◽

Sampling Method ◽

Diversity Index ◽

Similarity Index ◽

Average Density ◽

Sampling Location ◽

Dominance Index ◽

Composition And Structure ◽

Palm Oil Mill ◽

Mill Waste

The study of the periphyton algae community in Masang Kecil River that received palm oil mill effluent in Kinali District, West Pasaman Regency was held from November 2017 to September 2018. This study aims to determine the composition and structure of periphyton communities in the Masang Kecil River in Kinali, West Pasaman. This study used purposive sampling method with a sampling location of 4 stations. Based on this study, 88 species of periphyton were classified as 3 classes i.e Bacillariophyceae (64 species), Chlorophyceae (15 species) and Cyanophyceae (9 species). The average density is 8.967 ind/ cm2. The highest relative density (KR) at stations 1,2 and 3 is Navicula lanceolata and station 4 is Fragilaria capucina. Species that are always found at each station (FK= 100%) are Fragilaria capucina, Navicula lanceolata and Synedra ulna. The diversity index in the Masang Kecil River is classified as medium (H’ = 2.87). Equitability index is evenly distributed (E= 0.64). Dominance index (C= 0.12) there is no dominant species. The similarity index is almost the same except between stations 1 and 3.

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