scholarly journals KEANEKARAGAMAN TUMBUHAN PAKU DI BUKIT BOTAK KABUPATEN MUSI RAWAS SUMATERA SELATAN

2021 ◽  
Vol 4 (1) ◽  
pp. 19-25
Author(s):  
Ikna Pramudita ◽  
Merti Triyanti ◽  
Yunita Wardianti
Keyword(s):  
Data Collection ◽  
Research Method ◽  
Diversity Index ◽  
Sampling Techniques ◽  
Dominance Index ◽  
Purposive Sampling ◽  
High Category ◽  
Evenness Index ◽  
Index Value ◽  
Index Of Diversity

This study aimed to determine the types of Pteridophyta and to determine the index of diversity, dominance, and evenness in the Botak Hill. The research method used is descriptive quantitative. The data collection techniques in this study were exploratory methods and purposive sampling techniques. Based on the results of the study found as many as 1620 individual, consist of 24 species, 16 genera, 8 families and 4 orders. The results of the analysis of the diversity index of 2.851 (medium category), the dominance index value of 0.06 (low category), the evenness index of 0.679 (high category). There were 24 species of ferns found in Botak Hill, diversity was in the medium category, dominance was in the medium category and evenness was in the high category.

scholarly journals Struktur Komunitas Zooplankton di Perairan Pulau Panjang dan Teluk Awur, Kabupaten Jepara

2018 ◽  
Vol 7 (1) ◽  
pp. 37
Author(s):  
Rodhiyah Patmawati ◽  
Hadi Endrawati ◽  
Adi Santoso
Keyword(s):  
Sampling Method ◽  
Diversity Index ◽  
Dominance Index ◽  
Purposive Sampling ◽  
Marine Tourism ◽  
High Category ◽  
A Value ◽  
Evenness Index ◽  
Average Abundance ◽  
High Level

Perairan Pulau Panjang dan Teluk Awur merupakan lokasi wisata dan dimanfaatkan masyarakat sebagai sumber mata pencaharian. Zooplankton berperan sebagai konsumen tingkat satu yang menghubungkan fitoplankton dengan organisme tingkat tinggi. Tujuan dari penelitian ini adalah  untuk mengetahui komposisi, kelimpahan, indeks keanekaragaman, indeks keseragaman, indeks dominansi zooplankton di perairan Pulau Panjang dan teluk Awur. Metode yang digunakan dalam penelitian ini adalah deskriptif eksploratif dan penentuan lokasi menggunakan metode purposif sampling. Penelitian ini terbagi atas 5 stasiun dengan 3 sub-stasiun di setiap stasiun. Pengambilan sampel zooplankton dengan cara aktif dengan menarik planktonet secara horizontal. Pengambilan sampel dilakukan pada bulan Januari 2017. Hasil penelitian diperoleh 31 genera zooplankton dari 8 fila di perairan Pulau Panjang dan 20 genera zooplankton dari 3 fila di perairan Teluk Awur. Kelimpahan rata-rata zooplankton berkisar antara 378 Ind/L – 892 Ind/L di perairan Pulau Panjang dan 341 Ind/L – 446 Ind/L di perairan Teluk Awur. Indeks Keanekaragaman zooplankton menunjukkan nilai  2,36 – 2,68 di perairan Pulau Panjang dan 2,29 – 2,62 di perairan Teluk Awur yang termasuk dalam kategori sedang. Indeks keseragaman zooplankton menunjukkan nilai 0,75 – 0,88 di perairan Pulau Panjang dan 0,89 – 0,94 di perairan Teluk Awur yang termasuk dalam kategori Tinggi. Indeks dominansi di kedua lokasi menunjukkan tidak ada genus tertentu yang mendominasi dengan nilai 0,12 – 0,25 di perairan Pulau panjang dan 0,07 – 0,11 di perairan Teluk Awur.  Panjang Island and Teluk Awur waters are a marine tourism places and both the waters are also utilized as a source of community livelihood. Zooplankton role is as the first-level consumer that connects phytoplankton with the high-level organisms. The purpose of this research was to know the compotition, abundance, diversity index, evennes index and dominance index of zooplankton in the waters of Panjang Island and Teluk Awur of Jepara Regency. This research used deskriptive eksplorative method and determination location used purposive sampling method. This study was divided into 5 stations and with 3 sub-stations at each station. Zooplankton sampling was horizontally active by pulling the plankton-net. Sampling was done in january 2017. The results found 31 zooplankton genera of 8 phyla in Panjang Island waters and 20 zooplankton genera of 3 phyla in Teluk Awur waters. The average abundance ranged from 378-892 ind/L in Panjang Island waters and 341-446 ind/L in Teluk Awur waters. The zooplankton Diversity Index indicated the values of 2.36 - 2.68 in Panjang Island waters and 2.29-2.62 in Teluk Awur waters  which were in the medium category. The zooplankton evenness index indicated a value of 0.75-0.88 in Panjang Island waters and 0.89-0.94 in Teluk Awur waters belonging to the High category. The dominance index at both sites indicated that no particular genus dominating with the values of 0.12 - 0.25 in Panjang Island waters and 0.07-0.11 in Teluk Awur waters.

scholarly journals Perifiton Community Structure in Citarik River

2020 ◽  
pp. 1-8
Author(s):  
Heti Herawati ◽  
Nisa Hidayati Fitri ◽  
Zahidah . ◽  
Asep Sahidin ◽  
Izza Mahdiana Apriliani ◽  
...  
Keyword(s):  
Community Structure ◽  
Research Method ◽  
Diversity Index ◽  
Survey Method ◽  
Chemical Parameters ◽  
Dominance Index ◽  
Periphyton Community ◽  
Physical And Chemical Parameters ◽  
Index Value ◽  
Physical And Chemical

The purpose of this research is to determine the condition of waters in the Citarik River with the periphyton community as a bio indicator. This research was conducted from March-April 2019. The research method used was a survey method at 4 station points, five times sampling with a span of 7 days. The smallest periphyton abundance is in station IV which is 22 ind/cm2 and the most is in station I which is 18278 ind/cm2. Comparison of species deficit values at each station is different, this is influenced by different physical and chemical parameters. The dominance index value in the waters of the Citarik River ranges from 0.1 to 0.8 and the diversity index value ranges from 0.2 to 0.9. The results showed the Citarik River was in a mildly polluted condition.

scholarly journals PEMANFAATAN APLIKASI GOOGLE MEET SEBAGAI MEDIA PELAKSANAAN LAYANAN BIMBINGAN KLASIKAL SISWA SMAN 12 KOTA JAMBI

2021 ◽  
Vol 14 (2) ◽  
pp. 107-120
Author(s):  
Desi Gusdarti ◽  
Hary Soedarto Harjono ◽  
Eddy Haryanto
Keyword(s):  
Qualitative Research ◽  
Data Collection ◽  
Research Method ◽  
Sampling Techniques ◽  
Qualitative Research Method ◽  
Guidance Services ◽  
Purposive Sampling ◽  
Qualitative Descriptive ◽  
The Right ◽  
Principles Of Learning

The purpose of this study is to find out how to use the Google Meet application in the implementation of classical guidance services in students of class XII SMAN 12 Jambi City. This research method is a qualitative research method that uses purposive sampling techniques in data collection using unstructured interviews and triangulation, after which it is analyzed using qualitative descriptive to get an idea of the facts. The results of the study conducted by researchers through interviews with 5 informants about the use of google meet application as a medium of implementation of classical guidance services for students of class XII SMAN 12 Jambi City showed that the google meet application is the right choice to be used as a medium of implementation of classical guidance services because it meets the five principles of learning media, namely effectiveness, relevance, efficiency, usable and contextual.

scholarly journals Biodiversity of Fishes in Musi Estuary, South Sumatra, Indonesia

2020 ◽  
Vol 9 (2) ◽  
pp. 192-198
Author(s):  
Fitri Agustriani ◽  
Anna Ida Sunaryo Purwiyanto ◽  
Wike Ayu Eka Putri ◽  
Fauziyah Fauziyah
Keyword(s):  
Community Structure ◽  
Data Collection ◽  
Diversity Index ◽  
Stable Condition ◽  
High Availability ◽  
Fishing Ground ◽  
Dominance Index ◽  
Average Value ◽  
Gill Net ◽  
Evenness Index

Agustriani F, Purwiyanto AIS, Putri WAE, Fauziyah F. 2020. Biodiversity of fishes in musi estuary, South Sumatra, Indonesia.  Jurnal Lahan Suboptimal : Journal of Suboptimal Lands 9(2): 192-198.The high activity in the Musi estuary will have an impact on fishes diversity. This research aimed to analyse the biodiversity of fishes in the Musi estuary in South Sumatra. An experimental fishing method was used for data collection by fishing ground following the local fishermen habit using gillnet millennium. The abundance of fish species found were 21 species and 16 families. The main catch was Hemibagrus nemurus with a high relative abundance (RA) of 35.4% but the high availability frequency of 100% is Eleutheronema tetradactylum. The average value of the moderate diversity index (H'= 1.47), the moderate evenness index (J'= 0.48) and the low dominance index (D= 0.32). This condition shows that the community structure of the species captured by the gill net is in a fairly stable condition with the number of species that are spread fairly evenly and no species dominate each other.

scholarly journals Makrozoobentos Diversity in Various Substrates Type in Way Sindalapai River, Liwa Botanical Garden

2020 ◽  
Vol 7 (1) ◽  
pp. 47-53
Author(s):  
Rani Setiana ◽  
Tugiyono Tugiyono ◽  
Gregorius Nugroho Susanto ◽  
Suratman Suratman
Keyword(s):  
Food Source ◽  
Sampling Method ◽  
Diversity Index ◽  
Botanical Garden ◽  
Aquatic Biota ◽  
Dominance Index ◽  
Sustainable Resource Management ◽  
Evenness Index ◽  
Basic Concepts ◽  
Index Value

The study of macrozoobenthos diversity in Way Sindalapai River can be used as one of the basic concepts in sustainable resource management in Liwa Botanical Garden area. Macrozoobenthos has an important role in the aquatic ecosystem, such as a food source for aquatic biota and as a detritivore. This study aims to determine the diversity of macrozoobenthos based on different sediment substrates in Way Sindalapai River, Liwa Botanical Garden, West Lampung. This study uses a purposive sampling method based on differences in the sediment substrates: muddy, sandy, rocky, and scrub with 3 replications. Sampling was carried out using a stratified filter and tweezers to separate the organism from the substrate. Samples were preserved in 70% alcohol and were identified by identification books at the Ecology Laboratory, FMIPA Universitas Lampung. The results of the study found 10 macrozoobenthos orders with a total of 155 individuals included in 13 families. The results of the calculation of diversity index values (H ') macrozoobenthos for all types of 2.26 (medium category). The highest macrozoobenthos dominance index (D) of the four substrates is in the rocky substrate that is 0.41 (low category). While the evenness index value (E) of macrozoobenthos in the Sindalapai Way River was 0.44 (medium category).

scholarly journals Diversity of macroalgae diversity in the tidal waters

2021 ◽  
Vol 6 (1) ◽  
pp. 46-54
Author(s):  
Nurfauzi Ahmad ◽  
Diana Hernawati ◽  
Diki Muhamad Chaidir
Keyword(s):  
Qualitative Methods ◽  
Diversity Index ◽  
Sampling Techniques ◽  
Marine Biota ◽  
Dominance Index ◽  
Purposive Sampling ◽  
Ecological Index ◽  
Average Value ◽  
Plot Size ◽  
Tidal Waters

The Tidal waters of Sancang beach are habitats for various marine biota, such as macroalgae. This research aims to find out the diversity of macroalgae species in the tidal waters of Sancang Beach, conducted in February-April 2020. This research uses qualitative methods, sampling techniques using purposive sampling with the help of transect belts. The stations used in the search consist of Station 1 in the Ciporeang area, Station 2 in the Cicukangjambe area, and Station 3 in the Cibako area. Each station has one 100-meter transect belt with a plot size of 1 x 1 meter. Ecological index calculations include diversity index, uniformity index, and dominance index. The results showed that 39 types of macroalgae were found consisting of 10 orders, 18 families, 26 genera with a total macroalgae count of 13324 individuals. The average value of the ecological index obtained includes the diversity index (H') 2.15 with the medium category, the uniformity index (E) 0.26 with the low category, and the dominance index (C) 0.19 with the low category.Keywords: Diversity, macroalgae, sancang beach, tidal waters

scholarly journals COMPOSITION AND COMMUNITY STRUCTURE OF COPEPOD IN KAKAP RIVER ESTUARY, KUBU RAYA DISTRICT WEST BORNEO

2021 ◽  
Vol 3 (1) ◽  
pp. 54-66
Author(s):  
Elda Sari ◽  
Nora Idiawati ◽  
Sukal Minsas
Keyword(s):  
Community Structure ◽  
Correlation Analysis ◽  
Sampling Method ◽  
Diversity Index ◽  
River Estuary ◽  
Dominance Index ◽  
Purposive Sampling ◽  
Density Correlation ◽  
Evenness Index ◽  
Current Parameter

The research of composition and community structure of copepods in Kakap river estuary, Kubu Raya District, West Borneo was conducted from October to December 2020. The purpose of this study is to determine the composition and the community structure of copepod in Kakap river estuary, Kubu Raya District, West Borneo. This study used a purposive sampling method at four stations. Copepod samples were taken using plankton net. During the research, the total number of copepods that have been identified from 4 stations are 11 species from 3 orders, 4 families and 8 genera. Copepoda that has been obtained has the composition, namly Cyclopoids 5 species, Harpacticoida 3 species, Calanoida 2 species. The copepod density in Kakap river estuary ranged from 7,9-103,3 Ind / l, the diversity index (H ') ranged from 0 to 1.9, the evenness index (E) ranged from 0 - 0,9 and the dominance index (C) ranged from 0,2 - 1. The result of copepod density correlation analysis is that negatively correlated with -1,000 current parameter and positively correlated with the DO parameter, which is 0,800. The research of composition and community structure of copepods in Kakap river estuary, Kubu Raya District, West Borneo was conducted from October to December 2020. The purpose of this study is to determine the composition and the community structure of copepod in Kakap river estuary, Kubu Raya District, West Borneo. This study used a purposive sampling method at four stations. Copepod samples were taken using plankton net. During the research, the total number of copepods that have been identified from 4 stations are 11 species from 3 orders, 4 families and 8 genera. Copepoda that has been obtained has the composition, namly Cyclopoids 5 species, Harpacticoida 3 species, Calanoida 2 species. The copepod density in Kakap river estuary ranged from 7,9-103,3 Ind / l, the diversity index (H ') ranged from 0 to 1.9, the evenness index (E) ranged from 0 - 0,9 and the dominance index (C) ranged from 0,2 - 1. The result of copepod density correlation analysis is that negatively correlated with -1,000 current parameter and positively correlated with the DO parameter, which is 0,800.

scholarly journals Diversity of Molluscs (Gastropod And Bivalve) In Mangrove Ecosystem of Oransbari District, South Manokwari Regency, West Papua Province, Indonesia

2020 ◽  
Vol 8 (3) ◽  
pp. 1220-1224
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Mangrove Ecosystem ◽  
Species Evenness ◽  
Species Diversity Index ◽  
Dominance Index ◽  
High Category ◽  
West Papua ◽  
Evenness Index

In the Oransbari mangrove ecosystem, 13 species of molluscs were identified with 1256 individuals consisting of 9 species of gastropod and 2 species of bivalve. Dominance index of the identified molluscswas 0.11, with species diversity index of 1.89 (medium category) and species evenness index of 0.76 (high category).

scholarly journals ANALISIS MISKONSEPSI SISWA MENGGUNAKAN THREE TIER DIAGNOSTIC TEST BERBASIS OPEN ENDED QUESTION

2021 ◽  
Vol 9 (3) ◽  
pp. 276-291
Author(s):  
Mawaddah Mawaddah ◽  
Yandi Heryandi
Keyword(s):  
Data Collection ◽  
Diagnostic Test ◽  
Diagnostic Tests ◽  
Research Method ◽  
False Negative ◽  
Large Percentage ◽  
Sampling Techniques ◽  
Research Subjects ◽  
False Negatives ◽  
Clinical Interviews

This study aims to: (1) find out the misconceptions experienced by students in the material of similarity and congruence by using three-tier diagnostic tests based on open-ended questions. (2) find out the large percentage of students' misconceptions on the similarity and congruence material using a three-tier diagnostic test based on open-ended questions. The research method used was descriptive qualitative. The data collection instruments used were clinical interviews and three-tier diagnostic tests based on open-ended questions. This study was conducted in the SMP Negeri 2 Palimanan. The research subjects were selected using purposive sampling techniques so that 33 students were selected from 330 students. The results of the analysis of the three-tier diagnostic test based on open-ended questions showed that (1) the misconceptions that occurred in the material of similarity and congruence of 2D shapes included pure misconceptions, false positives, and false negatives. (2) the percentage of misconceptions experienced in the material of similarity and congruence 2D shapes as a whole was 50.2% with a large percentage of pure misconceptions 32.4%, false-positive 15.6%, and false-negative 2.2%

scholarly journals THE ANALYSIS OF OIL CONTENT IN SEDIMENT AND COMMUNITY STRUCTURE OF MACROZOOBENTHOS IN BELAWAN WATERS OF MEDAN CITY, NORTH SUMATERA PROVINCE

2020 ◽  
Vol 3 (2) ◽  
pp. 167-178
Author(s):  
Doli Juna Setia Tanjung ◽  
Bintal Amin ◽  
Syafruddin Nasution
Keyword(s):  
Community Structure ◽  
Linear Regression ◽  
Oil Content ◽  
Diversity Index ◽  
The Other ◽  
Regression Analyses ◽  
Simple Linear Regression ◽  
Dominance Index ◽  
Ocypode Quadrata ◽  
Evenness Index

This research was conducted in March 2019 to determine the oil content in sediment, it’s community structure of macrozoobenthos and it’s a relationship in Belawan Waters of Medan City, North Sumatera. Four sampling stations with five replications in each station were surveyed. The results showed that the average oil content in sediments exceeded the threshold had set by the National Academy of Science. Macrozoobenthos found consists of Ocypode quadrata, Scyla serrate, Rotun dicauda, Penaeus sp, Murex tribulus, and Nassarius olivaccus. The highest abundance was in Station 3 and the lowest was in Station 2. The diversity index in each station was generally very low. Dominance Index in Station 4 was medium, whilst the other stations were high. Evenness index showed in Station 3 and 4 were in high population, Station 1 was in medium population and Station 2 was in low population. Simple linear regression analyses between oil content in sediment with community structure of macrozoobenthos indicated negative correlation ( Y = 10,5-0,0001x , R2 = 0,0004 and r = 0,02 ) which indicated that the higher the oil content, the lower the macrozoobenthos abundance in sediment.

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