scholarly journals Type of helminth parasite in Snakehead fish (Channa striata) from Seuneubok Cina, Indra Makmur, Aceh Timur, Indonesia

2019 ◽  
Vol 1 (1) ◽  
pp. 47-55
Author(s):  
Masitta Tanjung
Keyword(s):  
Freshwater Fish ◽  
Environmental Conditions ◽  
Sampling Method ◽  
Helminth Parasite ◽  
Paddy Fields ◽  
Tropical Regions ◽  
Research Results ◽  
Purposive Sampling ◽  
Channa Striata

Snakehead fish (Channa striata) is one of the freshwater fish in tropical regions such as Asia and Africa, and has high nutrition but is difficult to cultivate. In Indonesia, Snakehead fish are found in paddy fields, swamps and ditches, making them susceptible to parasites. Constraints in Snakehead fish cultivation are caused by the nature of the fish as a predatory, lack of the availability of food and environmental conditions that can affect the growth of the fish. The former paddy fields in Seuneubok Cina of Indra Makmur, Aceh Timur, Indonesia, is found many Snakehead fish. This research aims to determine the types of parasites that infect Snakehead fish. The Snakehead fish was taken using electrofishing gear with purposive sampling method, then dissected and identified the endoparasites which contained in the fish intestines. The research results found three genus of parasites: Pallisentis, Procamallanus and Camallanus.

scholarly journals MORFOMETRIK LAMUN Thalassia hemprichii BERDASARKAN TIPE SUBSTRAT DI PERAIRAN PANTAI TANJUNG TIRAM, POKA, TELUK AMBON DALAM

2021 ◽  
Vol 17 (2) ◽  
pp. 77-89
Author(s):  
Jessico H Sermatang ◽  
Charlotha I Tupan ◽  
Laura Siahainenia
Keyword(s):  
Environmental Conditions ◽  
Sampling Method ◽  
Environmental Parameters ◽  
Nutrient Content ◽  
Flowering Plant ◽  
Substrate Type ◽  
Thalassia Hemprichii ◽  
Purposive Sampling ◽  
Significant Difference ◽  
Parameters Analysis

Seagrass as a flowering plant can live from muddy substrates to coral fractures. Differences in the characteristics of substrate type, nutrient content and aquatic environmental conditions can affect morphometric seagrass. The purpose of the study was to analyze environmental conditions and nutrient content as well as the morphometric characteristics of T. hemprichii seagrass based on differences in substrate type. This study was conducted in the waters of Tanjung Tiram Coastal, Poka from February-April 2021. Seagrass sampling was using the purposive sampling method. Data analysis was conducted using ANOVA with SPSS. The results of environmental parameters analysis showed that the water conditions of Tanjung Tiram, Poka are still at the tolerance limit intended for seagrass life. The substrate consists of sand substrate, gravel mixed sand substrate and mud substrate. The results of ANOVA showed that there was a significant difference in the content of sedimentary nutrients, especially phosphates in each substrate type and there was a significant difference in morphometric seagrass based on differences in substrate type and nutrient content.   ABSTRAK Lamun sebagai tumbuhan berbunga dapat hidup mulai dari substrat berlumpur sampai dengan patahan karang. Perbedaan karakteristik jenis substrat, kandungan nutrien dan kondisi lingkungan perairan dapat mempengaruhi morfometrik lamun. Tujuan dari penelitian ini adalah menganalisis kondisi lingkungan dan kandungan nutrien serta karakteristik morfometrik lamun T. hemprichii berdasarkan perbedaan tipe substrat. Penelitian ini dilaksanakan di Perairan Pantai Tanjung Tiram, Poka pada Bulan Februari-April 2021. Pengambilan sampel lamun menggunakan metode purposive sampling. Analisis data menggunakan ANOVA dengan SPSS. Hasil analisis parameter lingkungan, menunjukan bahwa kondisi perairan Tanjung Tiram, Poka masih berada pada batas toleransi yang diperuntukan untuk kehidupan lamun. Substrat terdiri dari substrat pasir, pasir campur kerikil dan lumpur. Hasil anova menunjukan bahwa terdapat perbedaan kandungan nutrien sedimen khususnya fosfat secara signifikan pada masing masing tipe substrat dan terdapat perbedaan morfometrik lamun secara signifikan berdasarkan perbedaan tipe substrat dan kandungan nutrien. Kata Kunci: morfometrik, nutrien, substrat, Tanjung Tiram, Thalassia hemprichii

scholarly journals Earning Per Share, Return on Asset Serta Dampaknya atas Tobin's Q di Perusahaan Sektor Industri Manufaktur Tahun 2017

2020 ◽  
Vol 5 (1) ◽  
pp. 93-104
Author(s):  
Verliani Dasmaran ◽  
Tri Yulaeli
Keyword(s):  
Regression Analysis ◽  
Analytical Method ◽  
Sampling Method ◽  
Secondary Data ◽  
Tobin’S Q ◽  
Manufacturing Companies ◽  
Return On Assets ◽  
Tobin's Q ◽  
Research Results ◽  
Purposive Sampling

This study aims to determine the effect of Earning Per Share and Return On Assets in sectors of manufacturing companies in the period 2017. This study is classified as a causative study. The research sample was determined using the purposive sampling method to obtain 37 sample companies. The type of data used is secondary data obtained from www.idx.co.id. The analytical method used is a moderated regression analysis (MRA). Based on the research results shows that EPS and ROA variables together have a significant effect on Tobin, s Q. Adjust R Square value of 0.590 so it can be interpreted that the magnitude of the contribution of Earning Per Share and Return On Asset variables to Tobin's Q in 2017 manufacturing companies in various industries is 59% while the remaining 41% is determined by several other factors beyond the Earning Per Share and Return On Asset variables.

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

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

scholarly journals Ekologi Mangrove Di Pesisir Kecamatan Tongas Dan Sumberasih Kabupaten Probolinggo, Jawa Timur

2019 ◽  
Vol 8 (2) ◽  
pp. 218-222
Author(s):  
Dyah Wijaya ◽  
Suryono Suryono ◽  
Nirwani Soenardjo
Keyword(s):  
Environmental Conditions ◽  
Research Finding ◽  
Sampling Method ◽  
Program Planning ◽  
Avicennia Marina ◽  
Rehabilitation Program ◽  
Purposive Sampling ◽  
Breast Height ◽  
Plot Sampling ◽  
Mangrove Vegetation

Komunitas mangrove menempati area diantara darat dan laut yang memiliki kondisi lingkungan berbeda satu sama lain. Tujuan penelitian ini untuk mengetahui struktur vegetasi mangrove dan mengetahui kesesuaian jenis mangrove yang sesuai untuk perencanaan program rehabilitasi mangrove di Desa Bayeman Kecamatan Tongas dan Desa Pesisir Kecamatan Sumberasih Kabupaten Probolinggo. Penelitian dilakukan pada Bulan Maret 2015 sampai Januari 2016. Pengambilan data vegetasi dilakukan dengan metode purposive sampling dan setiap transek dibuat plot sampling. Setiap individu pohon (plot 10 m x 10 m) dan sapling (anakan) (subplot 5 m x 5 m) diidentifikasi dan diukur diameternya setinggi dada (±1,3 m). Sementara seedling (semai) dihitung jumlah masing-masing spesies dan persentase penutupannya (subplot 1 m x 1 m). Hasil penelitian di Desa Bayeman ditemukan 7 spesies mangrove dan 1 jenis spesies di Desa Pesisir. Vegetasi pohon mangrove di Desa Bayeman dan Desa Pesisir berada dalam kondisi baik. Vegetasi Mangrove di Desa Bayeman didominasi spesies Xylocarpus mollucensis dan untuk Desa Pesisir adalah Avicennia marina. Vegetation mangrove occupy the area between land and sea that have environmental conditions differ from one another. The purpose of this studied to know about the structure and composition of mangrove vegetation for rehabilitation program planning in Bayeman Sub-District of. Tongas and Pesisir Sub-Districk Sumberasih, District of Probolinggo , East Java. The studied was conducted in March, 2015 to January, 2016. Vegetation data was done with purposive sampling method and every transect was made with plot sampling method. Each tree (plot 10 m x 10 m) and sapling (subplot 5 m x 5 m) was identified and measured on diameter at breast height (± 1.3 m).  Meanwhile, Seedling calculated the amount of each species and the percentage of cover (subplot 1 m x 1 m). The research finding at Bayeman shows that there are seven mangroves and one mangrove shows in Pesisir. The mangrove vegetation at Bayeman and Pesisir in good conditions. Mangrove vegetation at Bayeman is dominated by Xylocarpus mollucensis and Mangrove vegetation at Pesisir is dominated Avicennia marina .   

scholarly journals ANALISIS KINERJA PENYULUH PERTANIAN BERDASARKAN PERSEPSI KELOMPOK TANI DI KELURAHAN TARATARA SATU KECAMATAN TOMOHON BARAT KOTA TOMOHON

2020 ◽  
Vol 16 (3) ◽  
pp. 403
Author(s):  
Sandy Alfa Stefano Sambouw ◽  
Elsje Pauline Manginsela ◽  
Jane Sulinda Tambas
Keyword(s):  
Sampling Method ◽  
Secondary Data ◽  
Primary Data ◽  
Research Results ◽  
Purposive Sampling ◽  
Farmer Groups ◽  
The Government

This study aims to describe how the performance of agricultural instructors based on the perceptions of farmer groups in Taratara Satu Village, West Tomohon District, Tomohon City. The research was conducted from February to April 2020. The data used are primary and secondary data. Primary data were obtained through direct interviews with 18 respondents using a questionnaire and secondary data were obtained from the government office of the Taratara Satu village. The sampling method used purposive sampling method. The research results showed, 74 percent of farmers said that the extension workers had carried out their functions well, while 26 percent said that the extension workers were lacking in carrying out their roles and functions.

scholarly journals INVENTORY ACCOUNTING METHODS: FACTORS AFFECTING BASIS OF THE CHOICE

2019 ◽  
Vol 7 (1) ◽  
pp. inPress
Author(s):  
Rendy Aprianto Maha Putra ◽  
Anita Carolina
Keyword(s):  
Sampling Method ◽  
Stock Exchange ◽  
Profit Margin ◽  
Managerial Ownership ◽  
Company Size ◽  
Manufacturing Companies ◽  
Current Ratio ◽  
Factors Affecting ◽  
Research Results ◽  
Purposive Sampling

This research aims to analyze the effects of company size, inventory variability, cost of goods sold variability, gross profit margin, leverage, current ratio, and managerial ownership in selecting the inventory accounting methods. The population of this research was manufacturing companies listed in the Indonesia Stock Exchange in 2015-2018. In addition, this research used a purposive sampling method to determine the sample. The research results indicate that company size and inventory variability affect the choice of inventory accounting methods, while variability of cost of goods sold, gross profit margin, leverage, current ratio, and managerial ownership do not affect the choice of inventory accounting methods.

scholarly journals KEANEKARAGAMAN IKAN DI SUNGAI KELINGI KOTA LUBUKLINGGAU

Jurnal Biota ◽  
2018 ◽  
Vol 4 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Dian Samitra ◽  
Zico Fakhrur Rozi
Keyword(s):  
Data Analysis ◽  
Species Composition ◽  
Freshwater Fish ◽  
Sampling Method ◽  
Diversity Index ◽  
Fish Communities ◽  
Purposive Sampling ◽  
Stable Conditions

This study aims to determine the diversity of freshwater fish in Kelingi River Lubuklinggau City. The research was conducted on 6 stations, the determination of the location of the research was done by purposive sampling method. Samples of fish obtained from the catch by using scatter and scoop-net and then identified in the Education Laboratory of Biology STKIP PGRI Lubukinggau. Data analysis includes species composition (KJ), diversity index (H ') and uniformity index (E). The results of identification there are 13 species belonged to 5 Order, 6 Family, and 13 genra. Barbonymus gonionotus has the largest type of composition (69.53%). Diversity index (H ' ) ranged from 0.33 to 1.22 and the uniformity index (E) ranged from 0.24 to 0.84. Conclusions the diversity index of Kelingi river in this study was low and fish communities at stations 1,3 and 6 under stable conditions and at station 2,4,5 under distress conditions

scholarly journals Population structure of lamp shells (Brachiopoda: Lingula anatina Lamarck, 1801) in Aceh Northern Shore, Indonesia

2021 ◽  
Vol 869 (1) ◽  
pp. 012014
Author(s):  
C Octavina ◽  
M Ulfah ◽  
N Nurfadillah ◽  
S Agustina ◽  
J Niwatana ◽  
...  
Keyword(s):  
Population Structure ◽  
Environmental Conditions ◽  
Sampling Method ◽  
North Coast ◽  
Tolerance Limits ◽  
Purposive Sampling ◽  
The North ◽  
Sampling Locations ◽  
Northern Shore

Abstract This study aimed to determine the population structure of Lingula sp. in the Aceh northern shore. This research uses purposive sampling method where the sampling locations at Ujong Pancu beach, Kuala Cangkoi beach, Syiah Kuala beach and Alue Naga beach. Sampling was carried out using a quadratic transect (1x1 m) with three stations at each location. The results showed that there is one type of Brachiopods, namely the genus Lingula (Bruguière 1791), species Lingula anatina Lamarck, 1801 which are scattered on the north coast of Aceh. Overall, the abundance of L. anatina was quite high at each location, especially at Kuala Cangkoi beach (2.43 ind/m2), while the lowest abundance was found at Ujong Pancu beach (1,11 ind/m2). In addition, it was also found that L. anatina had a similarity distribution on the Aceh northern shore. The existence of L. anatina on the Aceh northern shore is very dependent on good environmental conditions, in general, the quality of the waters of Aceh northern shore is still within the tolerance limits of these biota. Therefore, population structure of L. anatina is stable, so that this biota resource must continue to be considered and managed properly.

scholarly journals AKTIVITAS DARI INDUSTRI RUMAH PANGGUNG DI DESA TOMBASIAN ATAS KECAMATAN KAWANGKOAN BARAT

2019 ◽  
Vol 15 (3) ◽  
pp. 407
Author(s):  
Claudio Biorhof Ering ◽  
Caroline Betsi Diana Pakasi ◽  
Ellen Grace Tangkere
Keyword(s):  
Design Process ◽  
Sampling Method ◽  
Raw Materials ◽  
Total Sample ◽  
Tax Collection ◽  
Research Results ◽  
Purposive Sampling ◽  
Distribution Process ◽  
Business Income ◽  
The Village

The purpose of this research is to analyze the activities of the stilt house industry. The sampling method in this study uses a purposive sampling method with a total sample of 15 respondents from a population of 36 owners of stilt house industries in the Upper Tombasian Village. The research results show that the activities of the stage house industry in the Upper Tombasian Village include production activities, namely the preparation of raw materials, the design process, ordering, and distribution. Production activities from the stilt house industry provide income where labor is absorbed from within the village itself, depend on number of rooms each house. Thet are 1 room (6 x 5) absorbs 3 workers, 2 rooms (7 x 9) absorb 4 workers, 3 rooms (7 x 12) absorb 5 workers. Income for owners where the owner owns a stilt house business, income for the village through tax collection for every 1 unit of house sold. Income for the surrounding community in the form of renting a vehicle for the distribution process is Rp. 600,000 - Rp. 1,200,000, depending on distance traveled.*eprm*

scholarly journals KEANEKARAGAMAN MOLLUSCA SEBAGAI BIOINDIKATOR KUALITAS PERAIRAN DI KAWASAN TPA KEBON KONGOK LOMBOK BARAT

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Athifah Athifah ◽  
Maya Nuansa Putri ◽  
Sahid Imam Wahyudi ◽  
Immy Suci Rohyani
Keyword(s):  
Water Quality ◽  
Key Words ◽  
Environmental Conditions ◽  
Sampling Method ◽  
Diversity Index ◽  
Residential Area ◽  
Purposive Sampling ◽  
Main River ◽  
The Difference ◽  
Tarebia Granifera

Abstract: Research has been done in the area of Kebon Kongok landfill by looking at the diversity of Mollusca as a bioindicator of water quality. This research is important because the river in Kebon Kongok landfill area is utilized by the surrounding community for daily needs. The research was conducted in May-June 2018 at Sungai Ayu River, Gerung District, West Lombok which aims to provide information about the water quality in this area. The research was done by purposive sampling method using cruising technique. There are 3 research stations selected based on the difference of environmental conditions around the waters of  Kebon Kongok landfill. Station 1 is located east of the Kebon Kongok landfill adjacent to the landfill waste pond landfill, station 2 is located in the northwest part of the Kebon Kongok landfill where it is located adjacent to the main river body and station 3 is located in the southwest adjacent to the residential area. There were 13 Mollusca species belonging to 8 families: Lymnaeidae, Ampullaroidae, Thiaridae, Viviparidae, Planorbidae, Ariophantidae, Neritidae and Corbiculidae. The Tarebia granifera of the Thiaridae family is the most common of 127, 92 and 47 in each station. There were Shannon-Wiener (H ') diversity index data where H' each station was 1.3, 1.5 and 1.4 respectively. This data concludes that the water quality around the Kebon Kongok landfill is moderately polluted with moderate diversity criteria (H '= 1.0-2.0). Key words: Kebon Kongok landfill, Indeks Shannon-Wienner, Mollusca, and Bioindicator. Abstrak: Telah dilakukan penelitian di kawasan TPA Kebon Kongok dengan melihat keanekaragaman Mollusca sebagai bioindikator kualitas perairan. Penelitian ini penting dilakukan mengingat sungai di kawasan TPA Kebon Kongok dimanfaatkan oleh masyarakat sekitar untuk kebutuhan sehari-hari. Penelitian telah dilakukan pada bulan Mei-Juni 2018 di sungai Taman Ayu Kecamatan Gerung,  Lombok Barat yang bertujuan untuk memberikan informasi mengenai kualitas perairan di kawasan tersebut. Penelitian dilakukan dengan metode purposive sampling menggunakan teknik jelajah. Ada 3 stasiun penelitian yang dipilih berdasarkan perbedaan kondisi lingkungan di sekitar perairan TPA Kebon Kongok. Stasiun 1 terletak di sebelah timur TPA Kebon Kongok yang bersampingan dengan kolam limbah lindi TPA, stasiun 2 terdapat di bagian barat laut TPA Kebon Kongok dimana letaknya berdekatan dengan badan sungai utama dan stasiun 3 terletak di sebelah barat daya yang berdampingan dengan pemukiman penduduk. Ditemukan 13 spesies Mollusca yang tergabung dalam 8 famili yakni  Lymnaeidae, Ampullaroidae, Thiaridae, Viviparidae, Planorbidae, Ariophantidae, Neritidae dan Corbiculidae. Tarebia granifera dari famili Thiaridae merupakan individu terbanyak yakni 127, 92 dan 47 di masing-masing stasiun. Didapatkan data indeks keanekaragaman Shannon-Wiener (H’) dimana H’ setiap stasiun berturut-turut yakni 1.3, 1.5 dan 1.4. Data ini menyimpulkan bahwa kualitas perairan sekitar TPA Kebon Kongok adalah tercemar sedang dengan kriteria diversitas sedang (H’=1,0-2,0). Kata kunci: TPA Kebon Kongok, Indeks Shannon-Wienner, Mollusca, dan Bioindikator

Sign in / Sign up

Export Citation Format

Share Document