scholarly journals Rafflesia patma Blume in Pananjung Pangandaran Nature Reserve, West Java: Population Structure, Distribution Patterns, and Environmental Influences

2021 ◽  
Vol 6 (3) ◽  
pp. 64800
Author(s):  
Bahana Aditya Adnan ◽  
Suwarno Hadisusanto ◽  
Purnomo Purnomo
Keyword(s):  
Population Structure ◽  
Nature Reserve ◽  
Principal Component ◽  
Sampling Technique ◽  
Distribution Patterns ◽  
Survey Method ◽  
Endemic Plant ◽  
West Java ◽  
Research Areas ◽  
Morisita Index

Rafflesia patma is an endemic plant of Pangandaran, West Java which is protected because of its rare status. The purpose of this research is to study the population structure, distribution patterns, and the effect of the physical environment of abundance R. patma in Pananjung Pangandaran Nature Reserve, West Java. The method used in this research was a survey method with a purposive sampling technique. Sampling was conducted using quadrat plots. The population pattern distribution was defined by a standardized Morisita index, and the analysis of abiotic environmental factors was determined by Principal Component Analysis (PCA) using PAST3. The results showed that there were 114 R. patma individuals scattered in several research areas in Pananjung Pangandaran Nature Reserve, they were Gua Parat (3 individuals), Cilegon (13 individuals), Pasir Putih (12 individuals), Badeto (48 individuals), and Curug Leutik (38 individuals). The distribution pattern of R. patma in Pananjung Pangandaran Nature Reserve was clustered with the Morisita index value (Id) > 1. Based on the PCA analysis, results that support the classification of the cluster analysis were obtained. Based on four abiotic environmental conditions analyzed, the most dominant character in influencing the distribution patterns and population structure of R. patma is light intensity. 

scholarly journals Population distribution patterns of Nepenthes reinwardtiana Miq. in Kerangas Forest of Teluk Adang Nature Reserve, Paser Regency

2020 ◽  
Vol 9 (1) ◽  
pp. 23
Author(s):  
Ratna Juliarti Wulandari ◽  
Muhammad Sumaryono ◽  
Ali Suhardiman
Keyword(s):  
Distribution Pattern ◽  
Nature Reserve ◽  
Nearest Neighbor ◽  
Population Distribution ◽  
Distribution Patterns ◽  
Spatial Cluster ◽  
Dispersion Index ◽  
East Kalimantan ◽  
Spatial Cluster Analysis ◽  
Morisita Index

Teluk Adang Nature Reserve (NR) is one of the Nepenthes habitats in East Kalimantan. One of the four Nepenthes species that can be found in this nature reserve is Nepenthes reinwardtiana or by local people known as anjat datu. The objectives of this study are to determine the population of N. reinwardtiana in Teluk Adang NR by calculating its density and frequency, and  to know its distribution pattern using Morisita index and spatial analysis approach in the form of Nearest Neighbor Analysis and Multi-Distance Spatial Cluster Analysis (Ripley's K Function). To know its distribution pattern, a census method by creating 5m x 5m plot along the observation track was done. The results showed that there were 2,943 individuals of N. reinwardtiana in Teluk Adang NR. Standardized Morisita Dispersion Index was 0.51, 0.55, and 0.51 in Tajur Village, Pasir Mayang Village, and Janju Village, respectively. The spatial distribution of N. reinwardtiana was clustered. Research on the distribution of N. reinwardtiana and its habitat needs to be carried out continuously so that its population in the Teluk Adang NR can be monitored.

scholarly journals Structure and composition of trees in Mount Tilu Nature Reserve, West Java, Indonesia

2020 ◽  
Vol 21 (6) ◽  
Author(s):  
Tri Cahyanto ◽  
Muhammad Efendi ◽  
DIAN MUHAMAD RAMDAN
Keyword(s):  
Tree Species ◽  
Nature Reserve ◽  
Basal Area ◽  
Principal Component ◽  
Floristic Composition ◽  
Diversity Indices ◽  
Species Structure ◽  
West Java ◽  
Conservation Area ◽  
Regeneration Status

Abstract. Cahyanto T, Efendi M, Ramdan DM. 2020. Structure and composition of trees in Mount Tilu Nature Reserve, West Java, Indonesia. Biodiversitas 21: 2674-2680. An understanding of the structure and composition of stands in a conservation area is needed to support sustainable management strategy. However, this information in the Mount Tilu Nature Reserve, Bandung District, West Java area is still lacking. This research was aimed to analyze the structure and composition of tree species in the block of Malagembol forest, Mt. Tilu NR. Data collection was carried out through vegetation analysis using sampling plot method with size of 10x100 m2 at three-level altitudes of 1530 m, 1745 m, and 1950 m asl. Observation parameters included species names, number of individuals, and diameter at breast height (dbh). Data were analyzed to determine the floristic composition, species structure based on their diameter class, relative basal area, diversity indices, and analysis of the importance of the main components of trees species through Principal Component Analysis (PCA). A total of 32 tree species from 23 families was found in the observation plots which was dominated by Fagaceae, Lauraceae, and Myrtaceae families. Some pioneer plants covered the gap in vegetation due to minor disturbance and residual damage in the past. Nonetheless, the dominance of stands with small diameters indicated good regeneration status following such disturbance. Based on these findings, we recommend protecting the vegetation in Mt. Tilu NR by limiting community activities that can disturb the forest.

scholarly journals Body Mass Index Artistic Gymnastics Athlete in West Java

2019 ◽  
Vol 4 (2) ◽  
pp. 84
Author(s):  
Sumbara Hambali ◽  
Etor Suwandar
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Sampling Technique ◽  
The Body ◽  
Survey Method ◽  
Normal Body Mass Index ◽  
West Java ◽  
Maximum Value ◽  
Average Body Mass ◽  
Average Body

The purpose of this study is to find out the body mass index of women's artistic gymnastics in West Java. The research method used is the survey method. The population and sample in this study were all female Javanese artistic gymnastics athletes, amounting to 50 people and sampling using the total sampling technique. The instruments used are BMI (Body Mass Index) with the formula BMI = BB (Kg) / TB (m) 2. The technique of calculating and analyzing data in this study through a quantitative approach in the form of a percentage. Based on the results of the study it can be seen that the average body mass index (BMI) of female artistic gymnastics athletes in West Java is 19.57kg / m2, with a standard deviation of 0.76. Whereas the minimum value is 18.07kg / m2, and the maximum value is 22.06kg / m2. Based on the qualification table of the Body Mass Index (BMI) assessment, it can be concluded that the average female artistic gymnastics in West Java has a qualification for the Normal Body Mass Index.

scholarly journals CHARACTERISTICS OF BEEF CATTLE FARMERS AT SOUTHERN WEST JAVA

2020 ◽  
Vol 1 (1) ◽  
pp. 17-24
Author(s):  
Dede Kardaya ◽  
Ristika Handarini ◽  
Wini Nahraeni ◽  
Elis Dihansih ◽  
Deden Sudrajat
Keyword(s):  
Elementary School ◽  
Beef Cattle ◽  
Sampling Technique ◽  
School Education ◽  
Survey Method ◽  
West Java ◽  
Level Of Education ◽  
Purposive Sampling ◽  
Elementary School Education ◽  
Livestock Ownership

The study aimed to identify characteristics of beef cattle farmers along the street corridor of Southern West Java. The study used a survey method in which purposive sampling technique was applied to collect data from 13 sub-districts of five districts along the street corridor of Southern West Java. Result of the study showed that eight categories of cattle farmers with their respective characteristics, namely: 1) the age of farmers, in the productive category (91%); 2) the level of education, mostly at the level of elementary school education (62%); 3) farming experience, most experience for 11-20 years (30%); 4) the nature of livestock business, is a side business (70.8%); 5) number of family dependents, with the highest number of three family dependents (32%); 6) livestock ownership, is their-self owned (67%); 7) cattle origin, with own purchases namely 46%, and 8) business scale, with many livestock owned by 1-3 beef or 50%.

scholarly journals Produksi dan Laju Dekomposisi Serasah Ceriops tagal di Cagar Alam Tanjung Panjang (The Production and Decomposition Rate of Ceriops tagal Litter in Tanjung Panjang Nature Reserve)

2021 ◽  
Vol 9 (1) ◽  
pp. 151
Author(s):  
Mirawati Thalib ◽  
Dewi Wahyuni Kyai Baderan ◽  
Abubakar Sidik Katili
Keyword(s):  
Environmental Factors ◽  
Decomposition Rate ◽  
Nature Reserve ◽  
Sampling Technique ◽  
Survey Method ◽  
Litter Production ◽  
Litter Bag ◽  
Salty Water ◽  
Mangrove Vegetation ◽  
Ceriops Tagal

Mangrove vegetation growsalong the coastal line and iscapable of thriving in salty water. Therefore, the study reported in this articlesought to describe the production and decomposition rate of Ceriops tagal litter in Tanjung Panjang Nature Reserve in Randangan Sub-District, Pohuwato District, Gorontalo Province. A survey method was employed, and a purposive sampling technique was used for selecting the research site. The data of litter production was collected using a litter trap of 2m x 1m. Decomposition data was collected using a litter bag sized of 1m x 1m. The results showed that litter production containing leaves at Station I reached 46%, twigs 40%, and fruits 14%. At Station II, the production of litter containing leaves reached 42%, twigs 45%, and fruits 13%. At Station III, the production of litter containing leaves reached 48%, twigs 43%, and fruits 9%. The decomposition rate (R) of C. tagal litter at each station was obtained with an average on the 14th day of 0.42 g, 0.75 g, and 0.77 g, respectively. On the 28th day, it was 0.75 g, 1.00 g, and 0.89 g; on the 42nd day was 1.13 g, 1.27 g, and 1.22 g; and on the 56th day was 1.48 g, 1.62 g, and 1.59 g. The ratio of the decomposition rate of C. tagal litter on day 14 to day 56 increased. This condition was influenced by several environmental factors, including salinity, which ranged from 4.5-6.3‰, ambient temperature at 27-28°C, dissolved oxygen at 2.0-5.0 mg/L, and soil pH between 5.9-8.0.Keywords: Ceriops tagal, decomposition rate, litter production, Pohuwato

scholarly journals Spatial Distribution of Macrozoobenthos as Bioindicators of Organic Material Pollution in the Citanduy River, Cisayong, Tasikmalaya Region, West Java, Indonesia

2020 ◽  
pp. 32-42
Author(s):  
Dimas Sulaeman ◽  
Isni Nurruhwati ◽  
Zahidah Hasan ◽  
Herman Hamdani
Keyword(s):  
Spatial Distribution ◽  
River Flow ◽  
Field Survey ◽  
Diversity Index ◽  
Survey Method ◽  
West Java ◽  
Melanoides Tuberculata ◽  
Morisita Index ◽  
Data Collection Technique ◽  
Tarebia Granifera

The Cisayong area of ​​Tasikmalaya Regency is an area that is passed by the Citanduy River. Citanduy River has received a variety of inputs, that affect the river water quality and cause pollution. Macrozoobenthos can be used as an indicator of water pollution. This research aims to determine the spatial distribution of the macrozoobenthic community as a bioindicator of organic matter pollution in the Citanduy River, Cisayong Tasikmalaya Region, West Java. This research was conducted on January 2 - March 3, 2020. The research method used a field survey method. The data collection technique used purposive sampling by determining 4 stations based on environmental factors and land use around the river flow. The results of the macrozoobenthic spatial distribution along the Citanduy River were different at each observation location. At station 1 several intolerant species Heptagenia sp., Leptophelbia sp., and Hydropsyche sp. Were found, station 2 found several facultative species Melanoides tuberculata, Lymnea sp., Tarebia granifera, Sulcosfira testudinaria, Filopaludina javanica, and Pomacea canalicuta, station 3 found several tolerant species Chironomus sp., and Tubifex sp., station 4 were found several species of facultative and tolerant macrozoobenthos Melanoides tuberculata, Lymnea sp., Tarebia granifera, Sulcosfira testudinaria, Filopaludina javanica, Pomacea canalicuta, and Tubifex sp. The abundance of macrozoobenthos in the Citanduy River ranges from 1460-2540 ind/m2. Diversity index ranges from 1.53 to 1.79. The uniformity index ranges from 0.45 to 0.53. Species deficits at each station are different. The Morisita index ranges from 0.48 to 1.12 representing uniform categories and groups.

scholarly journals Interpreting subdivision in a malocclusion Angle’s classification system among orthodontics

2012 ◽  
Vol 24 (3) ◽  
Author(s):  
Masrina Mohammad Yasim ◽  
Ida Ayu Evangelina ◽  
Iwa Rahmat Sunaryo
Keyword(s):  
Classification System ◽  
Sampling Technique ◽  
Class Ii ◽  
Class I ◽  
Survey Method ◽  
Inclusion Criteria ◽  
West Java

Introduction: Angle’s method still seems to be the most popular tool for classification of malocclusion. Confusion arises in the community of Orthodontic regarding the classification and interpretation of subdivision malocclusion in Angle’s classification system. The purpose of this study was to survey orthodontists in West Java to determine their consistency in classifying subdivision malocclusion and their viewpoints on the meaning of subdivision. Methods: The type of research was descriptive with survey method by using questionnaire. The study uses total sampling technique with some inclusion criteria. Data obtained were analyzed and presented in table form. Results: Of the 80 respondents, 71.3% is consistent, 22.5% is doubtful and 6.6% is inconsistent in classifying subdivision malocclusion. 37 respondents (46.25%) believe that subdivision refers to the Class II side, 20 respondents (25%) believe it refers to the Class I side 4 respondents (5%) says subdivision refers to neither Class I nor Class II side and 19 respondents (23.75%) says that subdivision referred to both side. Conclusion: Most of orthodontists are consistent in classifying subdivision malocclusion, majority of the responded orthodontists stated that subdivision refers to the abnormal side of the arches and most of the responded orthodontist use Proffit and Common usage as their source of reference.

scholarly journals Phylogenetic analysis of ornamental Pomacentridae from the southern coast of West Java

DEPIK ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 32-43
Author(s):  
Munatul Khayah Almusyarofah ◽  
Romanus Edy Prabowo ◽  
Agus Nuryanto
Keyword(s):  
Phylogenetic Analysis ◽  
Species Richness ◽  
Maximum Parsimony ◽  
Sampling Technique ◽  
Wide Distribution ◽  
Ornamental Fish ◽  
Survey Method ◽  
Southern Coast ◽  
West Java ◽  
Basal Group

Abstract. Pomacentridae has a wide distribution in Indonesia waters. Research on species richness of Pomacentridae has been carried out in some areas in Indonesia. However, there are no data about the relationships of Pomacentridae on the southern coast of West Java. This research aims to know the evolutionary kinship of Pomacentridae ornamental fish in Ujung Genteng and Taman Manalusu Beach, West Java. This research used a survey method with a judgment sampling technique. The parameters measured were the consistency index (CI) and character evolution of the resulting phylogenetic tree. Cladogram reconstructed based on maximum parsimony algorithm with 1000 bootstrap replicates in PAUP software. The result showed that the tree had a CI value of 0.6000 which indicated low homoplasy. Pomacentridae formed a monophyletic group when they compared with Chaetodon collare as outgroup. The Pomacentridae clade divided into two subclades. The first subclade consisted of Abudefduf indicus as a basal species, then Neoglypydodon bonang and Plectroglyphidodon lacrymatus have a closed kinship and diverged after Dascyllus trimaculatus, and then Abudefduf notatus and Abudefduf sexfaciatus have a close kinship and diverged after Abudefduf vaigiensis. The second subclade referred to as a basal group, and within this subclade, Chrysiptera brownriggii has a closely related to Chrysiptera unimaculata and diverged after Chromis opercularis.Keywords: Cladistics, damselfish, meristic, morphometric, Pomacentridae

scholarly journals The Relation of Nitrate and Phosphate to Phytoplankton Abundance in the Upstream Citarum River, West Java, Indonesia

2021 ◽  
pp. 21-31
Author(s):  
Kristina Marsela ◽  
Herman Hamdani ◽  
Zuzy Anna ◽  
Heti Herawati
Keyword(s):  
Water Quality ◽  
Diversity Index ◽  
Anthropogenic Activities ◽  
Sampling Technique ◽  
Survey Method ◽  
Nitrate Content ◽  
Phosphate Content ◽  
Phytoplankton Abundance ◽  
Dominance Index ◽  
West Java

Citarum River is the longest river in West Java Province, it is utilized for various anthropogenic activities that will affect the water quality, ecological state, and parameters of nitrates and phosphates in the waters of Citarum River. Nitrate and phosphate content can affect Phytoplankton abundance. Phytoplankton is a bioindicator to determine water quality. The purpose of this study is to determine the association of nitrates and phosphates with the abundance of phytoplankton and determine the quality of water in the Citarum River. The study began in August 2020 until September 2020. The research uses a survey method with a purposive sampling technique. Sampling was carried out at 5 stations with 5 times repetitions every 7 days. The water parameter analyzed are transparency, temperature, current, pH, DO, BOD, PO42-,NO3-, Phytoplankton abundance, diversity index, and dominance index. Results showed that phytoplankton in the citarum river there were 24 genera divided into 4 phylum. Diversity index during the study reached between 0,91 – 0,99 and dominance index was in the range 0,01 – 0,2. Phytoplankton abundance ranges from 11 to 1292 ind/L. The highest genera phytoplankton composition at each station was found is Synedra as much as 1087 ind/ L. Nitrate content ranges from 0.13 - 0.33 mg/l and phosphate content range from 0.13 - 0.29 mg/l. The acquisition of R square value based on the simultaneous analysis of the relationship between nitrate and phosphate and the abundance of phytoplankton was 43,9% and 56,1% was influenced by other several factor namely temperature, water transparency, nutrient, and water flow.

scholarly journals PENGARUH CUSTOMER EXPERIENCE TERHADAP REVISIT INTENTION DI TAMAN WISATA ALAM GUNUNG TANGKUBAN PERAHU

2016 ◽  
Vol 6 (1) ◽  
pp. 983 ◽  
Author(s):  
Yeni Yuniawati ◽  
Ajeng Dewi Indriyani Finardi
Keyword(s):  
Random Sampling ◽  
Sampling Technique ◽  
Customer Experience ◽  
Survey Method ◽  
West Java ◽  
Systematic Random Sampling ◽  
Natural Park ◽  
Revisit Intention ◽  
Analysis Technique ◽  
Regression Techniques

Natural Park of Tangkuban Perahu Mountain is a tourists destination in the boundary city of Subang and West Bandung which has a very beautiful natural atmosphere. The Tourists mostly come from West Java, Jabodetabek, outside West Java even another country outside Indonesia. Therefore the authors do a pre-study on tourists revisit intention of Tangkuban Perahu which produce that tourists revisit intention is low. Implementing the customer experience be expected could be increase the revisit intention to Tangkuban Perahu. This type of research is descriptive and verification, the survey method used is the systematic random sampling technique, with a sample size of 100 respondents. Data analysis technique using the multiple regression techniques. These results shows there is a partial influence customer experience consisting of comfort, education, hedonic, novelty, safety and beauty to tourists revisit intention of Tangkuban Perahu. The beauty dimension of customer experience variable got the highest score and the intention to recommend in revisit intention got the highest score.

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