scholarly journals Keanekaragaman Dan Dominansi Pohon Penyusun Hutan Lindung Di Pulau Marsegu Kabupaten Seram Bagian Barat

2021 ◽  
Vol 5 (2) ◽  
pp. 94-100
Author(s):  
Stelita Rosita Latumahina ◽  
Deli Wakano ◽  
Dece Elisabeth Sahertian
Keyword(s):  
Life Support ◽  
Diversity Index ◽  
Stable Condition ◽  
Index Formula ◽  
The West ◽  
Dominance Index ◽  
Vegetation Diversity ◽  
Shape Structure ◽  
Belt Transect ◽  
The Many

Maluku is known as an archipelago and has high biodiversity. One of the many islands in Maluku that has biological natural resources is Marsegu Island in the West Seram district. Marsegu Island has a very high diversity of marine resources, various types of birds and various vegetation diversity of trees. The diversity of trees in vegetation shows a variety of compositions, both variations in shape, structure or morphology, color, number, and other characteristics of plants in an area. Tree vegetation is the main constituent of forest areas and has an important function in water management, germplasm reserves, life support, development resources and sources of foreign exchange. This study aims to determine the diversity and dominance of protected forest trees on Marsegu Island, West Seram district. The method used in this research is the belt transect method. Furthermore, the tree species were identified based on the identification book. Data were analyzed using the diversity index formula from Shannon-Wienner and Simpson dominance index. The results of research conducted in the eastern and western parts of Marsegu Island found 22 species of trees as the protected forest on Marsegu Island. The Diversity Index at both stations is in the medium category with the results obtained that the east station is 2.2652 while the west station is 2.3761 and is in a stable condition, while the Dominance Index at both stations is low with the results obtained that the eastern station is 0.1618 while the west 0.1135 and no species dominates.

scholarly journals STRUKTUR KOMUNITAS ECHINODERMATA DI KAWASAN INTERTIDAL GILI MENO, LOMBOK UTARA

2019 ◽  
Vol 12 (2) ◽  
pp. 181-188
Author(s):  
M. Irsyad A. Ghafari ◽  
Gito Hadiprayitno ◽  
M. Liwa Ilhamdi ◽  
Noar Muda Satyawan
Keyword(s):  
Essential Role ◽  
Diversity Index ◽  
Intertidal Area ◽  
Dominance Index ◽  
Aquatic Resources ◽  
Ecological Index ◽  
Environmental Friendly ◽  
Evenness Index ◽  
Belt Transect ◽  
The Stability

AbstrakEchinodermata merupakan salah satu kelompok invertebrata yang memegang peranan penting, baik secara ekologi maupun ekonomi. Pengetahuan tentang organisme ini sangat dibutuhkan terkait dengan keberadaannya di alam yang semakin tergerus oleh pembangunan dan aktivitas manusia yang tidak ramah lingkungan. Penelitian ini bertujuan untuk mengetahui struktur komunitas Echinodermata di kawasan intertidal Gili Meno, Lombok Utara, yang dilakukan pada bulan April 2018 di 6 stasiun pengamatan yang tersebar di kawasan intertidal. Pengambilan data dilakukan dengan metode belt transect dengan pengulangan sebanyak 2–4 kali pada setiap stasiun, dengan luas transek 100 m2. Hasil pengamatan menunjukkan bahwa ditemukan 13 spesies yang berasal dari 4 kelas Echinodermata, yaitu Asteroidea (1 spesies), Echinoidea (4 spesies), Holothuroidea (4 spesies), dan Ophiuroidea (4 spesies). Hasil penghitungan indeks ekologi menunjukkan bahwa indeks keanekaragaman komunitas Echinodermata berkisar antara 0,16–1,36 (kategori rendah-sedang). Indeks dominansi di setiap stasiun berkisar antara 0,32–0,94 (kategori rendah-sedang), sedangkan indeks kemerataan sebesar 0,25 (kategori rendah). Hal ini menunjukkan bahwa stabilitas komunitas Echinodermata di kawasan intertidal Gili Meno tergolong rendah. Hasil penelitian ini diharapkan dapat menjadi acuan dalam pembangunan kawasan wisata yang ramah lingkungan tanpa mengabaikan keberadaan sumber daya hayati laut di kawasan Gili Meno, Lombok Utara.Abstract Echinoderms are one group of invertebrates that play an essential role, both ecologically and economically. Knowledge about this organism is needed concerning its presence in nature, which increasingly eroded by the development and activities of people who are not environmental friendly. This study aims to determine the structure of the Echinoderms community in the intertidal area of Gili Meno, North Lombok, were conducted on April 2018 at six observation stations. Data were collected by belt transect method with repetition of 2–4 times at each station, with 100 m2 transect area.  The observations showed that found 13 species included in 4 classes of Echinoderms, namely Asteroidea (1 species), Echinoidea (4 species), Holothuroidea (4 species) and Ophiuroidea (4 species). The ecological index of the Echinoderms community showed that the diversity index ranged from 0.16–1.36 (low-medium). The dominance index at each station ranged from 0.32 to 0.94 (low-medium), while the evenness index was 0.25 (low). The stability of the Echinoderms community in Gili Meno intertidal area relatively low. The results expected to be a reference in the development of environmentally friendly tourism areas without ignoring the existence of living aquatic resources in the Gili Meno, North Lombok.

scholarly journals Jumlah dan Jenis Fitoplankton Di Muara Sungai Banjir Kanal Barat Semarang

2020 ◽  
Vol 9 (3) ◽  
pp. 261-270
Author(s):  
Anantya Setya Perdana ◽  
Raden Ario ◽  
Hadi Endrawati
Keyword(s):  
Water Quality ◽  
River Flow ◽  
Diversity Index ◽  
Evaluation Criteria ◽  
River Estuary ◽  
Aquatic Organisms ◽  
Household Waste ◽  
The West ◽  
Dominance Index ◽  
Polluted Waters

ABSTRAK: Muara Sungai Banjir Kanal Barat merupakan muara sungai terbesar di Semarang yang alirannya langsung menuju ke laut. Terdapat beberapa aktifitas yang terjadi di sepanjang aliran ini, diantaranya yaitu aktifitas industri dan pemukiman penduduk. Selain itu, adanya pembuangan limbah rumah tangga yang masuk ke dalam badan sungai yang juga berdampak bagi perubahan kualitas perairan serta kehidupan ekosistem di sepanjang aliran sungai tersebut. Fitoplankton merupakan organisme perairan yang keberadaannya dapat dijadikan sebagai indikator kualitas perairan. Penelitian ini bertujuan untuk mengetahui komposisi, kelimpahan, indeks keanekaragaman, indeks keseragaman, dan indeks dominasi fitoplankton di Muara Sungai Banjir Kanal Barat Semarang. Penelitian ini dilakukan pada Oktober-Desember 2019. Metode yang digunakan adalah metode deskriptif eksploratif. Pengambilan sampel dilakukan sebanyak tiga periode dengan interval dua minggu sekali di tiga stasiun. Stasiun 1 merupakan perairan air tawar, stasiun 2 merupakan muara dan stasiun 3 merupakan perairan air laut. Hasil penelitian menunjukkan bahwa terdapat 24 genus fitoplankton dari 3 kelas, yaitu 17 genus dari kelas Bacillariophyceae, 5 genus dari kelas Dinophyceae dan 2 genus dari kelas Cyanophyceae dengan kelimpahan terbesar terdapat pada Stasiun 3 sebesar 67669 sel/L dan terendah pada Stasiun 1 sebesar 52287 sel/L, indeks keanekaragaman termasuk kategori sedang. Indeks keseragaman termasuk dalam kategori tinggi, indeks dominansi termasuk dalam kategori tidak ada jenis yang mendominasi. Berdasarkan kriteria penilaian menurut Shannon – Wiener bahwa perairan tersebut tergolong ke dalam perairan tercemar sedang. ABSTRACT: The Banjir Kanal Barat River Canal is the largest river estuary in Semarang that flows directly to the sea. There are several activities that occur along this flow, including industrial activities and human settlements. In addition, the disposal of household waste that enters the river body also has an impact on changes in water quality and ecosystem life along the river flow. Phytoplankton is aquatic organisms whose existence can be used as indicators of water quality. This study aims to determine the composition, abundance, diversity index, uniformity index, and a dominance index of phytoplankton in the West Banjir Canal River Estuary in Semarang. This research was conducted in October-December 2019. The method used is a descriptive exploratory method. Sampling was conducted in three periods with biweekly intervals at three stations. Station 1 is freshwater waters, station 2 is estuary and station 3 is seawater waters. The results showed that there were 24 genera of phytoplankton from 3 classes, namely 17 genera from the Bacillariophyceae class, 5 genera from the Dinophyceae class and 2 genera from the Cyanophyceae class with the greatest abundance at Station 3 at 67669 cells/L and lowest at Station 1 at 52287 cells/L, the diversity index is in the medium category. Uniformity index is included in the high category, dominance index is included in the category of no species that dominates. Based on the evaluation criteria according to Shannon-Wiener that the waters are classified as medium polluted waters.

scholarly journals Kondisi Terumbu Karang di Kawasan Taman Nasional Laut Kepulauan Seribu DKI Jakarta

2014 ◽  
Vol 19 (1) ◽  
Author(s):  
Drajad Sarwo Seto ◽  
Djumanto ◽  
Namastra Probosunu
Keyword(s):  
National Park ◽  
Diversity Index ◽  
Good Condition ◽  
Dominance Index ◽  
Ecological Index ◽  
The Core ◽  
High Uniformity ◽  
Belt Transect ◽  
Set Up ◽  
Line Intercept

AbstractThe objective of this research was to determine the condition of coral reefs, namely the percentage of coral covered, species distribution, community structure of coral, and the environmental conditions surround the core zone, protection zone, tourism zone, and residential zone in Kepulauan Seribu Marine National Park DKI Jakarta. The research was conducted from 8 to 16 May, 2013. The data was collected from four zones and each zone was set up into two stations as a point observation, at the depth of 79 meters. The percentage of coral coverring was calculated by line intercept transect method, coral genera was counted and identified using the belt transect method. Coral data was analyzed qualitatively based on ecological index. The results showed that the coral covering was range from 7.25 to 68.93% as categorized from bad to good condition. The number of coral was found approximately of 5.523 colonies that consisted of 45 genera and 16 families. The most abundance of coral was Porites and Montipora with percentage of 19.7% and 16.69%, respectively. Coral diversity index was ranged from 1.61 to 3.07 as indicated of low to high. Uniformity index was ranged from 0.44 to 0.68, which was the community in stressful to labile situation. Dominance index (D) was ranged from 0.06 to 0.32 showing that coral dominance was absence.Keywords: Coral reef, cover, diversity, Kepulauan SeribuAbstrakPenelitian ini bertujuan mengetahui kondisi terumbu karang yang meliputi persentase tutupan, sebaran, struktur komunitas dan kondisi lingkungan di zona inti, perlindungan, pemanfaatan wisata, dan pemukiman di kawasan Taman Nasional Laut Kepulauan Seribu DKI Jakarta. Penelitian dilaksanakan dari tanggal 8 sampai 16 Mei 2013. Pengambilan data berada pada empat zona pengelolaan dan setiap zona ditetapkan sebanyak dua stasiun pengamatan pada kedalaman 79 meter. Persentase tutupan karang dihitung dengan metode Line Intercept Transect, genera karang dihitung dan diidentifikasi menggunakan metode Belt Transect. Data jenis karang yang diperoleh dianalisis kualitatif berdasarkan indeks ekologis. Hasil penelitian diperoleh persentase tutupan karang berada pada kisaran 7,2568,93% yang dikategorikan kondisinya buruk hingga baik. Jumlah karang dari seluruh stasiun penelitian sebanyak 5.523 koloni yang terdiri dari 45 genera dan 16 famili. Genus karang yang paling sering dijumpai adalah Porites dan Montipora dengan persentase kelimpahannya masing-masing 19,7% dan 16,69%. Nilai indeks keanekaragaman (H’) karang berkisar antara 1,613,07 yang tergolong rendah hingga tinggi. Indeks keseragaman berkisar 0,440,68 yang berarti komunitas dalam keadaan tertekan hingga labil. Nilai indeks dominansi (D) berkisar 0,060,32 yang menunjukkan dominansi karang tertentu tergolong rendah.Kata kunci: Tutupan, terumbu karang, keragaman, Kepulauan Seribu

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 SPECIES DIVERSITY AND DISTRIBUTION OF SPONGES IN THE COASTAL AREA OF KASIAK ISLAND PARIAMAN REGENCY SUMATERA BARAT PROVINCE

2020 ◽  
Vol 2 (2) ◽  
pp. 162-169
Author(s):  
Nahdya Nasri Ananda ◽  
Efriyeldi Efriyeldi ◽  
Thamrin Thamrin
Keyword(s):  
Distribution Pattern ◽  
Diversity Index ◽  
Survey Method ◽  
Research Station ◽  
Frequency Of Occurrence ◽  
Dominance Index ◽  
Bottom Waters ◽  
Density Values ◽  
Belt Transect ◽  
Index Value

Sponges are the most primitive multicellular animals that live in various types of waters from freshwater, brackish and sea. Sponges live in bottom waters that typically stick themselves on hard substrate such as rock or coral and compete with other tacks organism to obtain a food hall. The research was conducted in Kasiak Island Pariaman regency West Sumatera in February-March 2019, aims to find outthe type, density, frequency of occurrence, diversity index, dominance index, the distribution pattern of sponge, To support the research data is also observed the characteristics of the environment such as water quality. The method used is survey method, where sampling using belt transect method performed on three stations. The research found 14 genus / species of sponge consisting of 11 families in island waters Kasiak with sponge density values obtained in each research station ranges from 1458-4208 ind / ha. The highest frequency of occurrence of the type Jaspis sp. with the frequency of occurrence of 100%. Diversity index values ranged from 1.8921 to 1.9488, dominance index value obtained was from 0.3163 to 0.3396, and the value of the distribution pattern of the sponge ranges from 0.2941 to 0.3015.

scholarly journals Analisis Struktur dan Komposisi Vegetasi Tumbuhan Di Taman Hutan Raya Raden Soerjo Prigen Pasuruan

2021 ◽  
Vol 5 (2) ◽  
pp. 114
Author(s):  
Nia Sylviana Sari ◽  
Samsun Hadi ◽  
Rr. Eko Susetyarini
Keyword(s):  
Diversity Index ◽  
Environmental Parameters ◽  
Sampling Technique ◽  
Wealth Index ◽  
Tree Level ◽  
Importance Value Index ◽  
Importance Value ◽  
Dominance Index ◽  
Vegetation Diversity ◽  
Forest Park

Long drought and uncontrolled human activities resulted in R. Soerjo Prigen Pasuruan Grand Forest Park experiencing fire. Adverse impacts on vegetation can result in vegetation death. Damage caused by fire to vegetation can lead to succession which can be seen from the composition and structure of forest vegetation. The purpose of this study was to determine the effect of environmental parameters, structure and composition of plant vegetation in Tahura R. Soerjo, which were used as a learning resource for biology. This study used a purposive sampling technique. The method used is a combination of paths and checkered lines. The data analysis technique used is the Importance Value Index (INP), the dominance index, the diversity index, the wealth index, and the evenness index. The results showed that the identification of plant vegetation diversity was found as many as 33 species from 17 families that came from 3 divisions. The highest INP was found at the seedling level. The value of the dominance index is less than 1. The results show that the value of the density index is low, because it has a value of <3.5. The evenness value is at a high value, except at the tree level.

scholarly journals Riparian Tree Vegetation Diversity Salah Nama Island in Banyuasin, South Sumatera

2021 ◽  
Vol 13 (2) ◽  
pp. 297
Author(s):  
Mirna Dwirastina ◽  
Etty Riani ◽  
Agnes Puspita Sudarmo
Keyword(s):  
Aquatic Plants ◽  
Diversity Index ◽  
Stable Condition ◽  
Sampling Location ◽  
Vegetation Diversity ◽  
Riparian Plants ◽  
Sampling Locations ◽  
Riparian Tree ◽  
Water Plants

Highlight Research:Riparian plants play an important role in maintaining the balance of an aquatic ecosystem.The diversity of riparian aquatic plants on the island of Salah Nama BanyuasinData collection on riparian plants used the quadratic transect methodThe results showed that there were 21 types of riparian aquatic plants in 16 families.The highest composition is in the Lythraceae family, namely Sonneratia acidaAbstractRiparian plants play an important role in maintaining the balance of an aquatic ecosystem. The missing plant components from a water can cause sedimentation and change the microhabitat in these waters. The purpose of the study is to determine the diversity of riparian aquatic plants on the island of Salah Nama Banyuasin. The research was conducted in August 2016, November 2016, and January 2017 at Salah Nama Island Mariana Ilir Banyuasin 1, South Sumatra. Sampling was done by using the purposive sampling method. Determination of the sampling location used GPS (Global positioning system). Observation stations consisted of 5 sampling locations. The method of taking water plants was done in exploratory way. Data collection on riparian plants used the quadratic transect method measuring 1 m x 1 m. Samples of riparian plants were taken then wrapped with newspaper or paper and put into large plastic, labeled then taken to the testing laboratory Institute Inland fisheries and extension, Palembang. The results showed that there were 21 types of riparian aquatic plants in 16 families. The highest composition is in the Lythraceae family, namely Sonneratia acida. The diversity index of aquatic plants ranges from 1 <H'<3 in the stable condition category. Based on the results of the study, the riparian plant species that dominated the most were Sonneratia sp. The conclusion that can be drawn is that the diversity of riparian plants on the island of Salah Nama is in the medium category, the dominant riparian plants are Sonneratia sp.

scholarly journals Phytoplankton and Physics Chemical Parameters in Estuary Waters, West Coast of South Sulawesi, Indonesia

2020 ◽  
pp. 61-70
Author(s):  
Muh. Farid Samawi ◽  
Akbar Tahir ◽  
Rahmadi Tambaru ◽  
Khairul Amri ◽  
Mahatma Lanuru ◽  
...  
Keyword(s):  
West Coast ◽  
Diversity Index ◽  
Spatial Sampling ◽  
High Abundance ◽  
Chemical Parameters ◽  
The West ◽  
Dominance Index ◽  
South Sulawesi

This paper provides an explanation of the condition of phytoplankton in the estuary waters of the west coast of South Sulawesi. The study was carried out on four estuaries namely Tallo, Marusu, Polong and Battoe with spatial sampling from inside the estuary to the outside of the estuary. The results obtained were found in three classes, namely Bacillariophyceae class, Cyanophyceae class, and Dinophyceae class with 19 phytoplankton genera. With an abundance of phytoplankton ranging from 352 - 5304 cells / L, the highest abundance is in the Tallo estuary. Meanwhile, the highest diversity index (H ') was found in Tallo estuary and the highest dominance index (D) was in Tallo estuary. Parameters that characterize high abundance estuaries are nitrate and TSS.

scholarly journals TREES VEGETATION DIVERSITY IN PT ARUN NGL HOUSING, LHOKSEUMAWE, ACEH PROVINCE

2016 ◽  
Vol 16 (1) ◽  
pp. 1-6
Author(s):  
Iqbar Iqbar
Keyword(s):  
Tree Species ◽  
Leucaena Leucocephala ◽  
Dominant Species ◽  
Diversity Index ◽  
Research Area ◽  
Vegetation Diversity ◽  
Housing Area ◽  
Aceh Province ◽  
Belt Transect ◽  
High Diversity

The research about trees vegetation diversity in PT Arun NGL area had been done in December 2012. The objective of the research was to calculate the trees vegetation diversity index. The data had been collected in nine belt transects by length 400 m and  400 m2  (10 m x 40 m) plots  for each belt transect. The collecting data was  including name of species, family, density, frequency and  dominancy.  The data was analyzed to get important value and diversity index. The result showed that there were 39 tree species belongs to 23 families found in the research area.  There were three dominant species namely; Pterocarpus indicus,  Pithecelobium dulce, dan Leucaena leucocephala which had higher important value than others species that lead  influencing the ecosystem. The trees diversity index in this area was about 3,3 which interpreted this area has high diversity index. Moreover, the plants were planted in PT Arun NGL Housing Area have another function as reducing pollutant material in the air.

scholarly journals TIPE KOMUNITAS HUTAN LAHAN KERING DI HUTAN LINDUNG SENTAJO, KABUPATEN KUANTAN SINGINGI, RIAU Community Types of Dryland Forest Within The Sentajo Protected Forest, Kuantan Singingi Regency, Riau Province

2017 ◽  
Vol 8 (2) ◽  
pp. 103-109
Author(s):  
Pebriandi . ◽  
Omo Rusdiana ◽  
Muhammad Buce Saleh
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Similarity Index ◽  
Systematic Sampling ◽  
Importance Value Index ◽  
Species Diversity Index ◽  
Dominance Index ◽  
Coverage Area ◽  
Vegetation Diversity ◽  
Evenness Index

Sentajo Protected Forest located in Kuantan Singingi Regency, Riau Province. There is no information about vegetation diversity in this location. Therefore this study was conducted. This study aimed to determine the diversity of vegetation, structure, and composition of each community in Sentajo Protected Forest. The study was conducted in April-September 2016. A sampling design was determined using systematic sampling with random start. The sampling intensity used was 5%. The parameters measured in this study were the importance value index, similarity index between communities, species diversity index, evenness index, dominance index, regeneration, as well as horizontal and vertical structures. Based on the type of soil, elevation, and slope, 6 communities were grouped from the dense coverage area (forested). The results showed that the Sentajo Protected Forest had 424 flora consisted of 254 species, and 102 families. Sentajo Protected Forest had similarity index between 18 - 64%, species diversity index of 2.62 - 4.15, evenness index of 0.59 - 0.86, dominance index of 0.02 - 0.08. The larger the diameter of the tree, the smaller the number of individuals. The stratification of the canopy had 5 layers of canopy. Sentajo Protected Forest regeneration was relatively good as the number of seedlings> saplings> mature trees.Key words: community, composition and structure, diversity, Sentajo Protected Forest.

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