scholarly journals Distribution patterns and population structure of salagundi (Rhodoleia teysmanii) From North Tapanuli-North Sumatra

2021 ◽  
Vol 912 (1) ◽  
pp. 012078
Author(s):  
K S Hartini ◽  
A Susilowati ◽  
M Rizky
Keyword(s):  
Population Structure ◽  
Distribution Pattern ◽  
Distribution Patterns ◽  
Tree Level ◽  
Vegetation Analysis ◽  
Analysis Techniques ◽  
Home Construction ◽  
Excessive Consumption ◽  
Index Value ◽  
North Sumatra

Abstract North Sumatra known as bigger island with abundant of tropical tree species. Some of those were lesser known species. One of lesser-known and potential species from North Sumatera is Salagundi (Rhodoleia teysmanii). Despite being widely utilized by locals peoples, information on Salagundi’s population and other characteristics is very limited. The community in the surrounding area frequently uses wood for a variety of functions, such home construction. Excessive consumption potentially threatent the species’ existence in the habitat. Therefore, this study aims to determine the distribution pattern and population structure of Salagundi in Simorangkir Julu Village, Siatas Barita District, North Tapanuli Regency, North Sumatra Province. For those purpose, vegetation analysis techniques using a combination of plotted lines and lines were adopted. Result of this research showed that, distribution pattern of Salagundi at the seedling to tree level was clumped with the Morisita (Ip) index value of 0.51 -0.53. The population structure curve was the J-shaped reversed. This shows that the condition of the population is sustainable.

scholarly journals VEGETATION ANALYSIS AND POPULATION STRUCTURE OF PLANTS AT MOUNT ENDUT FORESTED AREA, GUNUNG HALIMUN SALAK NATIONAL PARK, BANTEN, JAVA, INDONESIA

REINWARDTIA ◽  
2018 ◽  
Vol 17 (1) ◽  
pp. 39
Author(s):  
Edy Sambas ◽  
Cecep Kusmana ◽  
Lilik Budi Prasetyo ◽  
Tukirin Partomihardjo
Keyword(s):  
Population Structure ◽  
Tree Species ◽  
National Park ◽  
Basal Area ◽  
Tree Density ◽  
Tree Level ◽  
Vegetation Analysis ◽  
Importance Value ◽  
Forested Area ◽  
Sampling Locations

SAMBAS, E. N., KUSMANA, C., PRASETYO, L. B. & PARTOMIHARDJO, T. 2018. Vegetation analysis and population structure of plants at Mount Endut forested area, Gunung Halimun Salak National Park, Banten, Java,Indonesia. Reinwardtia 17 (1): 39–53. — Study of vegetation structure and species composition at Mount Endut was carried out by using transect and plot methods. Data of trees, saplings and seedlings were enumerated from four transects measuring 10 m × 2,000 m in four directions of slopes i.e. North, South, East and West. In total there were 180 species of trees and saplings belonging to 105 genera and 51 families. Tree density and basal area indicate the variation and the differences in each of the sampling locations. Density of saplings and abundance of seedlings tend to be low in locations with high density and basal areas at tree level. Tree species having higher Importance Value were Castanopsis acuminatissima, Schima wallichii, C. argentea, Quercus gemelliflora, and Altingia excelsa. Castanopsis acuminatissima, Garcinia rostrata, S. wallichii, Symplocos cochinchinensis, and Prunus arborea were saplings which had highest density, while Ophiorrhiza marginata, Cyathea contaminans, Pinanga coronata,C. acuminatissima, and G. rostrata were the most abundant listed seedlings at the study site. At least 27 tree species (21.91%) were recorded as relatively rare (presence represented by only 1–2 individuals), thus requiring special attention in the management of the area.

scholarly journals MACROZOOBENTHOS COMMUNITY STRUCTURE IN INTERTIDAL ZONE OF SAMBUNGO VILLAGE PESISIR SELATAN REGENCY OF WEST SUMATERA PROVINCE

2021 ◽  
Vol 4 (2) ◽  
pp. 106-111
Author(s):  
Bob Anggara ◽  
Afrizal Tanjung ◽  
Syafruddin Nasution
Keyword(s):  
Community Structure ◽  
Distribution Pattern ◽  
Intertidal Zone ◽  
Diversity Index ◽  
Distribution Patterns ◽  
Dominance Index ◽  
West Sumatra ◽  
Index Value ◽  
The Village

This research was conducted in the village of Sambungo, Silaut District, Pesisir Selatan Regency, West Sumatra Province in August 2020. The purpose of this study was to determine the structure of the macrozoobenthos community which includes: type, density, diversity, uniformity, dominance and distribution patterns. Sampling was done randomly at 3 stations, each station consists of 3 transects and each transect consists of 3 plots, namely in the upper middle and lower in the intertidal zone. The results of the study found 5 classes of macrozoobenthos with 9 species. The abundance values ​​obtained ranged from 3.33 - 5.11 ind/m2. The diversity index value ranges from 1.18-1.54 which is classified as moderate, while the dominance index value ranges from 0.39-0.52, namely there was no species that dominate, the uniformity index value ranges from 0.03-0.06 which is not balanced and the value of the distribution pattern ranges from 2.81 to 3.76 with the pattern of distribution in groups

scholarly journals Analisis Vegetasi Mangrove di Pulau Liki, Distrik Sarmi Kota Kabupaten Sarmi

2018 ◽  
Vol 7 (1) ◽  
pp. 22-28
Author(s):  
Rosye H.R. Tanjung ◽  
Agnes Kabelen ◽  
Alfred Antoh
Keyword(s):  
Species Composition ◽  
Vegetation Structure ◽  
Tree Level ◽  
Vegetation Analysis ◽  
Mangrove Species ◽  
The Public ◽  
Ecological Values ◽  
The Stability ◽  
Index Value ◽  
Tree Sapling

Utilization of mangrove forest is very important for people who are on the island of Liki. This study aims to determine the species composition of mangrove, mangrove vegetation structure and ecological values in the Liki Island District of Sarmi Kota, Sarmi Regency, Papua Province. The method used in this research is the transect method, by observation, interviews, documentation and literature review. The results of the study and analysis of the data showed the discovery of the species composition as much as 5 species  of 3 families with a density of 105 individuals/ha at tree level, 5 species of 3 families with a density of 124 individuals/ha at the level of the pole, 5 species of 3 families with a density of 149 people/ha at stake levels and 5 types of 3 families with a density of 109 individuals/ha at the seedling stage. The index value of the highest importance that kind of Bruguiera sexangula 78.02% at tree level. Mangrove species diversity at the level of the tree, sapling and seedling were low with H'<2.5. This research concludes that: 1). the composition of mangrove on Liki island consist of 5 species of 2). the low regeneration of mangroves causes the amount of density, frequency and dominance are relatively low; 3). need to increase the awareness of the public about the importance of the island of Liki themselves in maintaining the stability of mangrove land and sea conditions.Key words: vegetation analysis, mangrove species, Liki Island, Sarmi, Papua.

scholarly journals Population structure of giant clams (tridacnidae) in Aceh Besar district waters

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
M Rizki Fazillah ◽  
Chitra Octavina ◽  
Muhammad Agustiar ◽  
Muhammad Akhyar
Keyword(s):  
Population Structure ◽  
Coral Reef ◽  
Distribution Pattern ◽  
Diversity Index ◽  
Similarity Index ◽  
Giant Clam ◽  
Giant Clams ◽  
Coral Reef Area ◽  
The Individual ◽  
Index Value

Giant clams have an essential ecological role in the coral reef ecosystem. Given the decreasing number of giant clams in nature, the status of giant clams as protected animals, and there is still little information about giant clams, data or information is needed to make policies regarding giant clam conservation management. This study aimed to determine the population structure of giant clams (Tridacnidae) in the coral reef area of Aceh Besar District. The research was conducted in May 2018, located in Aceh Besar Regency waters with six observation stations. Observation of giant clams is carried out using a visual census technique with the belt transect method. The observations showed that the giant clams found in Aceh Besar waters consisted of 2 species, namely Tridacna maxima and Tridacna crocea. Overall stations, the individual density of giant clams is 0.041 ind. m-2. The diversity index of giant clams shows a value ranging from 0–0.97, classified in the low diversity category. The similarity index value of giant clams is classified into the stressed to stable similarity category with values ranging from 0–0.97. The dominance index value of giant clams is classified in the medium to high dominance category with values ranging from 0.52 to 1. The distribution pattern of the two giant clam species found in the waters of Aceh Besar District has a uniform distribution pattern with values ranging from 0.20–0.29. The overall population structure of Tridacnidae is in unstable condition.

Analisis Rantai Nilai Komoditas Cabai Merah

2019 ◽  
Vol 2 (1) ◽  
pp. 336-346
Author(s):  
Dhamon Oridilla B
Keyword(s):  
Distribution Pattern ◽  
Distribution Patterns ◽  
Added Value ◽  
Commodity Chain ◽  
Market Prices ◽  
Data Analyst ◽  
Bargaining Position ◽  
Agricultural Business ◽  
The Government ◽  
Red Peppers

Candi Village in Bandungan District is one of the Chili Supply Sub-district for Semarang Regency and surrounding area has agro-climate suitable for the development of various agricultural commodities supported by wide market opportunity, so it is suitable for agricultural business development. The purpose of this research is to identify the distribution pattern of red pepper, to know each value of commodity chains and distribution, to design alternative distribution pattern of red pepper.Population in this research is 88 respondents from 735 of member of chilli farmer in Desa Candi with total area of 150,3 hectare consisting of rice field, moor and yard. Methods of data analyst using quantitative approach is done by using Margin Marketing Analysis. The results include: (1) The pattern of distribution of existing farming business grows naturally in accordance with the developments and needs of the perpetrators, the actors in this pattern are farmers, wholesalers, collectors, wholesalers, retailers, consumers. (2) The value of the red chili commodity chain in this naturally grown pattern often makes pricing more dominant by traders, so farmers receive prices slightly lower than market prices. (3) Some obstacles faced in distributing red peppers are the difficulty of changing the mindset of the community about advanced farming, this is best utilized by market participants (chain of distribution) who are more informed and always keep abreast of market dynamics. Conventional marketing pattern by farmer cause price level accepted by farmer in general relatively smaller compared to price received by trader. Suggestions shorten the chain of distribution patterns, increase the added value of products and improve the bargaining position of farmers and for the government always guide / accompany farmers in getting accurate market information, which can be used as farmers in bargaining, Increased market transparency can act as a trigger for the functioning of a market, improved competition and increased adaptation to meet the needs of supply and opportunity to compete with market prices. Desa Candi di Kabupaten Bandungan adalah salah satu Kecamatan Penyedia Cabai untuk Kabupaten Semarang dan sekitarnya memiliki agroklimat yang cocok untuk pengembangan berbagai komoditas pertanian yang didukung oleh peluang pasar yang luas, sehingga sangat cocok untuk pengembangan bisnis pertanian. Tujuan dari penelitian ini adalah untuk mengidentifikasi pola distribusi cabai merah, untuk mengetahui masing-masing nilai rantai komoditas dan distribusi, untuk merancang alternatif pola distribusi cabai merah. Populasi dalam penelitian ini adalah 88 responden dari 735 anggota petani cabai di Desa Candi dengan total luas 150,3 hektar yang terdiri dari sawah, tegalan dan pekarangan. Metode analis data menggunakan pendekatan kuantitatif dilakukan dengan menggunakan Analisis Pemasaran Margin. Hasil meliputi: (1) Pola distribusi usaha pertanian yang ada tumbuh secara alami sesuai dengan perkembangan dan kebutuhan pelaku, pelaku dalam pola ini adalah petani, pedagang besar, pengumpul, pedagang besar, pedagang besar, pengecer, konsumen. (2) Nilai rantai komoditas cabai merah dalam pola yang dikembangkan secara alami ini sering membuat penetapan harga lebih dominan oleh para pedagang, sehingga petani menerima harga yang sedikit lebih rendah daripada harga pasar. (3) Beberapa kendala yang dihadapi dalam mendistribusikan paprika merah adalah sulitnya mengubah pola pikir masyarakat tentang pertanian maju, hal ini paling baik digunakan oleh pelaku pasar (rantai distribusi) yang lebih banyak informasi dan selalu mengikuti perkembangan dinamika pasar. Pola pemasaran konvensional oleh petani menyebabkan tingkat harga yang diterima petani pada umumnya relatif lebih kecil dibandingkan dengan harga yang diterima pedagang. Saran mempersingkat rantai pola distribusi, meningkatkan nilai tambah produk dan meningkatkan posisi tawar petani dan bagi pemerintah selalu membimbing / menemani petani dalam mendapatkan informasi pasar yang akurat, yang dapat digunakan sebagai petani dalam tawar-menawar, Peningkatan transparansi pasar dapat bertindak sebagai pemicu berfungsinya pasar, meningkatnya kompetisi dan peningkatan adaptasi untuk memenuhi kebutuhan pasokan dan peluang untuk bersaing dengan harga pasar.

Distribution patterns and population structure of Illex coindetii (Cephalopoda: Ommastrephidae) in the Southern Tyrrhenian Sea: Historical series of 14 years trawl survey

2011 ◽  
Vol 109 (2-3) ◽  
pp. 342-350 ◽  
Author(s):  
Anna Perdichizzi ◽  
Laura Pirrera ◽  
Daniela Giordano ◽  
Francesco Perdichizzi ◽  
Barbara Busalacchi ◽  
...  
Keyword(s):  
Population Structure ◽  
Distribution Patterns ◽  
Trawl Survey ◽  
Tyrrhenian Sea ◽  
Historical Series ◽  
Southern Tyrrhenian Sea

scholarly journals Kajian Hutan Kota Malabar terhadap Kenyamanan Termal

2020 ◽  
Vol 3 (1) ◽  
pp. 21
Author(s):  
Eduardo Hilario Bado Towary ◽  
Roedy Sulistyono ◽  
Sama’ Iradat Tito ◽  
Muh. Agus Ferdian
Keyword(s):  
Thermal Comfort ◽  
Thermal Condition ◽  
Open Space ◽  
Green Space ◽  
Tree Level ◽  
Vegetation Types ◽  
Vegetation Analysis ◽  
Humidity Index ◽  
Important Value Index ◽  
The City

<pre>Comfort is something that humans need without exception when in a Green Open Space (RTH). Thermal comfort is a thermal condition felt by humans that is influenced by the environment. The existence of green space such as the City Forest of Malabar needs to be measured about it which can define its feasibility. (1) To examine the effect of thermal comfort in the Malabar forest on the community. (2) Analyzing vegetation in the Malabar city forest related to comfort. The results obtained in this study are the Temperature humidity index (THI) of respondents in the Malabar city forest known to average values of 22.42. It can be categorized that the Malabar city forest has a comfortable condition because in the index range 21 to 24. The analysis of the vegetation analysis in the Malabar city forest is concluded for the predominant vegetation sapling level, ie the pole glodokan plant with an important value index of 6.69. Whereas the pole level that dominates is mahogany with an important value index of 6.66. As for the tree level, the dominant vegetation types are plants with an important value index of 127.91</pre>

scholarly journals Pola Distribusi Aboveground Biomass Kawasan Hutan Mangrove Peniti Kalimantan Barat

Life Science ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 1-9
Author(s):  
Rafdinal Rafdinal ◽  
Rizalinda Rizalinda ◽  
Sukal Minsas
Keyword(s):  
Distribution Pattern ◽  
Aboveground Biomass ◽  
Random Sampling ◽  
Analysis Data ◽  
Mangrove Ecosystem ◽  
Mangrove Forests ◽  
Vegetation Analysis ◽  
Conceptual Approach ◽  
West Kalimantan

This study aims to analyze the distribution pattern of aboveground biomass (AGB) in the mangrove ecosystem of West Kalimantan Safety. In addition, it also analyzes the differences in biomass and carbon stocks in the condition of mangrove forests. The study of the distribution pattern of AGB of mangrove forests was carried out between August and September 2018. Determination of the location of the study was based on a conceptual approach in the dimensions of spatial temporal that is using the Porposive Random Sampling method. Vegetation analysis was carried out by a single plot measuring 50 m x 50 m at each selected location. Based on vegetation analysis data it was found that the density of mangrove stands on the Peniti coast ranged from 38 to 185 ind /ha, with an average of 88.25 ± 66.15 ind./ Ha. The AGB of pinch mangrove forests ranged from 8.85 to 84.82 Mg / ha with the largest total AGB distributed in the stand diameter class of more than 80 cm.   Penelitian ini bertujuan untuk menganalisis pola distribusi aboveground biomass (AGB) pada ekosistem mangrove Peniti Kalimantan Barat. Selain itu juga untuk menganalisis perbedaan biomassa, dan cadangan karbon pada kondisi hutan mangrove. Kajian pola distribusi AGB hutan mangrove Peniti dilakukan antara bulan Agustus dan September 2018. Penentuan lokasi penelitian didasarkan pada pendekatan konseptual dalam dimensi spasio temporal yaitu menggunakan metode Porposive Random Sampling. Analisis vegetasi dilakukan dengan metode petak tunggal berukuran 50 m x 50 m pada setiap lokasi terpilih. Berdasarkan data analisis vegetasi didapatkan bahwa kerapatan tegakan mangrove di pesisir Peniti berkisar antara 38 sampai 185 ind/ha, dengan rata-rata 88,25±66,15 ind./ha. AGB tegakan hutan mangrove Peniti berkisar antara 8,85 sampai 84,82 Mg/ha dengan total AGB terbesar terdistribusi pada kelas diameter tegakan lebih dari 80 cm.

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