scholarly journals Struktur Komunitas Rumput Laut di Perairan Pasir Panjang Desa OlibuuKabupaten Boalemo, Gorontalo

2018 ◽  
Vol 7 (1) ◽  
pp. 59
Author(s):  
Edi Wibowo ◽  
Raden Ario ◽  
Suryono Suryono ◽  
Nur Taufiq ◽  
Destalino Destalino
Keyword(s):  
Diversity Index ◽  
Survey Methods ◽  
Species Abundance ◽  
Brown Seaweed ◽  
Sample Survey ◽  
Research Station ◽  
Water Medium ◽  
Significant Difference ◽  
Index Value ◽  
Almost All

Rumput laut atau seaweed termasuk tumbuhan berthallus yang banyak dijumpai hampir di seluruh pantai Indonesia, terutama wilayah pantai yang mempunyai rataan terumbu karang.  Perbedaan mendasar sistem hidupnya dengan tumbuhan darat adalah dalam pengambilan zat-zat makanan. Tumbuhan darat sangat bergantung pada akar sebagai alat pengambil/ penyerap zat hara dari substrat, sedangkan rumput laut menyerap zat hara yang dibutuhkan bagi pertumbuhannya dari medium air dengan cara difusi melalui permukaan substansi fisiknya.Penelitian ini bertujuan untuk mengetahui struktur komunitas rumput laut di perairan Pasir Panjang Pulau Limbah, Kecamatan Paguyaman Pantai, Kabupaten Boalemo, Provinsi Gorontalo. Metoda penelitian yang digunakan adalah bersifat diskriptif.Adapun pengumpulan data dilakukan dengan metode sample survey methods. Hasil penelitian menunjukan bahwa perairan Pulau Limbah di dominasi oleh Rumput Laut Coklat dengan kelimpahan tertinggi Padina australis. Nilai Indeks Keanekaragaman (H’) Rumput Laut tertinggi terdapat pada stasiun C dengan nilai rerata: 1,854 dan yang terendah pada Stasiun A dengan nilai rerata: 1,469. Nilai Indeks Keseragaman (E)  nilai tertinggi terdapat pada Stasiun C dengan nilai rerata: 0,679 dan terendah pada stasiun A dengan nilai rerata: 0,668. Nilai indeks Dominansi (C) tertinggi terdapat pada Stasiun A dengan nilai rerata : 0,251 dan nilai terendah stasiun B dengan nilai rerata: 0,187. Analisis Ragam (Anova) menunjukan bahwa stasiun penelitian memberikan perbedaan yang nyata (P≤0,05) terhadap nilai Indeks Keanekaragaman (H’), Indeks Keseragaman (E) serta Indeks Dominasi (C).  Seaweed including thallus plants that are found almost all over the coast of Indonesia, especially on beaches that have coral reefs. Seaweed is a photosynthetic organism as well as plants on land. The fundamental difference of his life system is in the taking of food substances. Ground plants realy heavily on roots as a nutrient removal device from the substrate, while seaweed absorbs the nutrients needed for its growth from the water medium by diffusion through the surface of its physical substance. This study aims to determine the structure of seaweed communities in Limbah Island Waters, District Paguyaman Beach. The results showed that the waters of Limbah Island is dominated by brown seaweed with the highest species abundance was Padina australis. The highest index value of Seaweed diversity (H’) was found at station C with average: 1,854 and the lowest at station A with a mean of: 1,469. For uniformity index value (E) the highest value is at station C with average: 0,679 and the lowest at station A with a mean of: 0,668. The highest index value of dominance (C) is at station A with a mean of: 0,251 and the lowest value at station B with a mean of: 0,187. The result of the analysis of variance (Anova) showed that the research station give a significant difference (P≤0,05) to the Diversity Index (H’), Uniformity Index (E) and Domination Index (C).

scholarly journals KEANEKARAGAMAN JENIS BURUNG RANGKONG (Bucerotidae) DI STASIUN PENELITIAN WAY CANGUK TAMAN NASIONAL BUKIT BARISAN SELATAN

2021 ◽  
Vol 4 (2) ◽  
pp. 153
Author(s):  
Muhammad Sarpin Pratama ◽  
Agus Setiawan ◽  
Sugeng Prayitno Harianto ◽  
Nuning Nurcahyani
Keyword(s):  
National Park ◽  
Diversity Index ◽  
Descriptive Analysis ◽  
Index Formula ◽  
Research Station ◽  
Species Diversity Index ◽  
Transect Line ◽  
Line Transects ◽  
Index Value ◽  
Almost All

The rise of hornbill hunting and deforestation that occurred in Indonesia, especially the island of Sumatra lately, threatening the preservation of these birds in nature. The purpose of this study was to determine thediversity of hornbill species in the Way Canguk Research Station, Bukit Barisan Selatan National Park. The method used in this study is a transect line with a total of 18 line transects. The data obtained was processed using the Shanon wienners diversity index formula, then translated with descriptive analysis. A total of 5 types of hornbills found in these locations are rhinoceros hornbills (Buceros rhinoceros), helmeted hornbills (Rhinoplax vigil), wreathed hornbill (Rhyticeros undulatus), bushy crested hornbill (Anorrhinus galeritus) and white crowned hornbill (Berenicornis comatus), with a species diversity index value of 1.00 included in the low category and the evenness of the species is a stable with an evenness index value of 0.62. The highest abundance of hornbills is (Anorrhinus galeritus) a beside that hornbills can be found in almost all transect lines.

scholarly journals KEANEKARAGAMAN KEPITING BIOLA PADA KAWASAN HUTAN MANGROVE DESA KARIMUNTING KECAMATAN SUNGAI RAYA KEPULAUAN KABUPATEN BENGKAYANG

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Hanafi Hanafi ◽  
M Sofwan Anwari ◽  
Ahmad Yani
Keyword(s):  
Fiddler Crab ◽  
Diversity Index ◽  
Species Abundance ◽  
Similarity Index ◽  
Sampling Technique ◽  
Fiddler Crabs ◽  
Species Diversity Index ◽  
Transect Line ◽  
Species Similarity ◽  
Index Value

Karimunting Village is a coastal area that has a mangrove with contained several faunas in it, one of which is a fiddler crab. The fiddler crab is a Decapoda ordo and it is included in the Ocypodidae family. This study aims to collect data on the diversity of fiddler crabs in Karimunting Village. The method used in this study is a survey, while the sample is collected by applying the transect line with a purposive sampling technique. The transect line is 500 m length, with a total of three lanes. There are ten plots of 1x1 meter in size in each transect lines to pick up fiddler crabs. Fiddler crabs species were found in 6 species, namely Uca paradussumieri, Uca annulipes, Uca forcipata, Uca rosea, Uca crassipes and Uca tetragonon. The Shannon-Winner species diversity index (H') of fiddler crabs in 1st and 2nd lanes both are categorized medium, while in the 3rd lane is categorized low. The range of values H'=0,3-1,5. The value of species abundance index (Xi) ranges from 3-16.6 ind/m2. The value of evenness index (e) ranges from 0,72 to 0,84. The dominance index value (C) ranges from 0,3 to 0,5 categorized as the absence of the dominant species of fiddler crab. Comparison of species similarity index (IS) for each lane is categorized differently, for the 1st and 2nd lane the index is 91% and categorized as having high species similarity, then in 2nd and 3rd lane the index is 75% and categorized as having a medium species similarity, whereas the index for 1st and 3rd is 60%, therefore it is categorized as having low species similarity.Keyword: Diversity, Fiddler Crab, Karimunting Village

scholarly journals The structure, composition, and threatened plants in The Kinarum Protected Forest, South Kalimantan, Indonesia

2020 ◽  
Vol 21 (6) ◽  
Author(s):  
Dodo Dodo ◽  
Syamsul Hidayat
Keyword(s):  
Diversity Index ◽  
Species Abundance ◽  
Research Area ◽  
Iucn Red List ◽  
Species Diversity Index ◽  
Threatened Plants ◽  
Abundance Index ◽  
Forest Condition ◽  
Protected Plants ◽  
Index Value

Abstract. Dodo, Hidayat S. 2020. The structure, composition, and threatened plants in The Kinarum Protected Forest, South Kalimantan, Indonesia. Biodiversitas 21: 2603-2618. Kinarum Protected Forest (Kinarum PF) is one of the remaining tropical forest areas in Tabalong District, South Kalimantan, Indonesia. It is feared that deforestation will occur in this forest due to various human activities. The research was conducted to determine the structure and composition of vegetation in Kinarum PF which several decades ago was once a forest concession area. This research also explored the existence of threatened, endemic, and protected plants. Research has been carried out using the track plot method. The total research area is 0.6 ha consisting of three transect lines with five plots measuring 20 x 20 m2 each transect. Data were analyzed with important value index (IVI), dominance index, species diversity index, and species abundance index. The results recorded 460 specimens belonging to 121 species, 86 genera, and 43 families. Most species are from the family Lauraceae followed by Moraceae and Rubiaceae. The results also recorded 42 species included in the IUCN red list plants, eight of which are classified as threatened plants, namely Aglaia angustifolia, Artocarpus tamaran, Dracontomelon costatum, Durio dulcis, Durio kutejensis, Eusideroxylon zwageri, Myristica magnifica, and Shorea guiso. These plants have an average IVI value less than 10% and the species abundance index is close to zero. In general, the forest condition is classified as moderate with a diversity index value at each growth stage in the range of values ​​1-3. However, IVI of each species, especially those belonging to the threatened, endemic, and protected plants are on average low.

scholarly journals STRUKTUR KOMUNITAS LARVA IKAN PADA SAAT PASANG SURUT DI MUARA SUNGAI MOROSARI SAYUNG, DEMAK

2018 ◽  
Vol 7 (4) ◽  
pp. 370-378
Author(s):  
Prayogi Pahingguan ◽  
Bambang Sulardiono ◽  
Wiwiet Teguh Taufani
Keyword(s):  
Sea Water ◽  
Fish Larvae ◽  
Diversity Index ◽  
Research Result ◽  
High Tide ◽  
River Estuary ◽  
Survey Method ◽  
Research Station ◽  
Tide Level ◽  
Index Value

Muara Sungai merupakan perairan semi tertutup yang terletak di bagian hilir sungai dan masih berhubungan dengan laut sehingga memungkinkan untuk terjadinya pencampuran dua massa air, yakni air tawar dan air laut. Tujuan penelitian untuk mengetahui komposisi dan kelimpahan larva ikan, mengetahui perbedaan struktur komunitas pada saat pasang dan surut. Metode yang di gunakan adalah metode survei yang dilaksanakan pada bulan Mei 2018 di Muara sungai Morosari Sayung, Demak. Sampling dilakukan pada 3 stasiun dengan kondisi pasang dan surut. Variabel yang diukur antara lain Komposisi, Kelimpahan Larva ikan dan Struktur komunitas pada saat pasang dan surut. Hasil penelitian didapatkan Larva ikan pada saat pasang di stasiun I sebanyak 43 ind, stasiun II diperoleh larva  ikan sebanyak 22 ind dan stasiun III sebanyak 34 ind. Hasil penelitian didapatkan pada saat surut di stasiun I sebanyak 24 ind, stasiun II 22 ind dan stasiun III sebanyak 34 ind. Keseluruhan larva ikan yang tertangkap terdiri dari 10 famili yaitu Nemipteridae, Mugilidae, Gobiidae, Ambassidae, Acrididae, Chanidae, Engraulidae, Labridae, Scatophagidae dan Lactaridae. Indeks keanekaragaman pada saat pasang termasuk dalam kategori rendah dan sedang dengan nilai berkisar 0,99-1,6. Indeks keseragaman berkisar antara 0,78-0,91 maka tergolong kedalam kategori tinggi atau stabil. Nilai indeks Dominasi termasuk kedalam dominasi rendah dan sedang dengan nilai berkisar antara 0,22-0,40. Nilai indeks keanekaeragaman pada saat surut masuk dalam kategori rendah dan sedang dengan nilai berkisar 0,91-1,41. Indeks keseragaman berkisar 0,66-0,91 masuk dalam kategori stabil. Dominasi berkisar antara 0,32-0,45, dengan nilai tersebut maka dapat dikategorikan Dominasi sedang.  Estuary is a semi-closed waters located in the downstream part of the river and still in contact with the sea, allowing for mixing of two water masses, namely fresh water and sea water. The purpose of this research is to find out the composition and abundance of fish larvae, to know the differences in community structure during high and low tide levels. The method used in this research is a survey method conducted in May 2018 in the river estuary of Morosari Sayung, Demak. Sampling was carried out at 3 tidal and low tide stations. Variables measured include Composition and Abundance of fish larvae and community structures during highs and low tide level. The research result showed that 43 ind larvae at high tide at station I, were 22 ind at stations II, were obtained and 34 ind stations III. The results of the research were obtained at low tide at station I as many as 24 ind, station II 22 ind and station III as many as 34 ind. All captured fish larvae consist of 10 families namely Nemipteridae, Mugilidae, Gobiidae, Ambassidae, Acrididae, Chanidae, Engraulidae, Labridae, Scatophagidae and Lactaridae. The diversity index value at the high tide entered in the low and medium category ranged from 0.99 to 1.6. Uniformity lindex ranges from 0.78 to 0.91 in the medium category. Domination ranges from 0.22 to 0.40, with this value the entire research station into the category there is no dominance. The diversity index value at the low tide entered in the low and medium category ranged from 0.91 to 1.41. The uniformity index ranges from 0.66 to 0.91 included in the stable category. Domination ranges from 0.32-0.45 with this value can be categorized medium. 

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 Demersal Fish Diversity Index in Cirebon Waters, West Java

2021 ◽  
pp. 22-28
Author(s):  
Dedi Supriadi ◽  
Restu Widayaka ◽  
Aman Saputra ◽  
Maman Lukmanul Hakim
Keyword(s):  
Fish Species ◽  
Census Data ◽  
Diversity Index ◽  
Demersal Fish ◽  
Fish Diversity ◽  
Average Weight ◽  
Lutjanus Campechanus ◽  
Significant Difference ◽  
Index Value ◽  
Placement Distance

This study aims to analyze the distance between the placement of the base fish aggregating devices (FAD) from the beach, the composition of the catch, identify fish species and determine the diversity of fish caught at different distances of the base FAD in Cirebon waters. The research method was carried out descriptively by census. Data analysis method for demersal fish diversity index value (H') using Shannon-Wiener and t-test. Sampling of respondents was carried out by census as many as 20 basic FAD fishermen. The research location is in the Cangkol Tengah Fishermen Association, Cirebon City. The results of this study indicate that the number of fish species caught on FADs with a distance of <12 miles was obtained 10 species with 6,784 fish, the largest number of fish caught was snapper (Lutjanus Campechanus) as many as 2,040 fish with a percentage of 30.2% of the total number of fish. The whole fish caught, while the fish with the largest weight was snapper for distances <12 miles with an average weight of 658.92 kg or 30% of other types of fish. The number of fish species caught on FADs with a distance of >12 miles obtained 10 species with 9.217 fish, the highest number of fish caught was snapper (Lutjanus Campechanus) as many as 2,884 fish with a percentage of 27.97% of the total number of fish caught, while the fish with the greatest weight is snapper with an average weight for distances >12 miles of 988.39 kg or 30% of other types of fish. The magnitude of the demersal fish diversity index value at the base FAD placement distance <12 miles was 1.6672 and more than 12 miles was 1.8137 which means that there is no significant difference and the diversity index category is small because the value of H '≤ 2.

scholarly journals KEANEKARAGAMAN JENIS SERANGGA PADA TANAMAN TERUNG BELANDA (Solanum betaceaum) DI DIENG KULON JAWA TENGAH

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Nurmaisah Nurmaisah ◽  
Deny Murdianto
Keyword(s):  
Potential Role ◽  
Diversity Index ◽  
Light Trap ◽  
Species Abundance ◽  
Pitfall Trap ◽  
Insect Species ◽  
Wiener Diversity Index ◽  
Index Value ◽  
Solanaceae Family

ABSTRACTTamarillo (Solanum betaceaum) is shrub, of Solanaceae family member. This species cultivated at warm temperate region 20oC. Tamarillo only grew in highland, above 1000 m from sea surface level. The aims of this research were to know the diversity and insect species abundance land and to know the potential role of insects that was beneficial and harmful on tamarillo plants at Dieng. The diversity of insect species was obtained from catching insect directly using insect net and indirectly using pitfall trap and light trap in research land. The data was analyzed by using Shannon-Wiener diversity index. The result showed that the diversity index value in 1,80 . The conclusion of the result was the diversity of insect species on monoculture was lower than polyculture land of Tamarillo in Dieng Plateau. The potential role of the insects were natural enemy and destructive insect. Key Words: Diversity, Tamarillo, Monoculture, Polyculture ABSTRAKTamarillo (Solanum betaceaum) adalah semak, dari anggota keluarga Solanaceae. Spesies ini dibudidayakan di daerah beriklim 20oC. Tamarillo hanya tumbuh di dataran tinggi, di atas 1000 m dari permukaan laut. Tujuan dari penelitian ini adalah untuk mengetahui keanekaragaman dan kelimpahan spesies serangga tanah dan untuk mengetahui peran potensial serangga yang menguntungkan dan berbahaya pada tanaman tamarillo di Dieng. Keragaman spesies serangga diperoleh dari penangkapan serangga secara langsung menggunakan jaring serangga dan secara tidak langsung menggunakan perangkap lubang dan perangkap cahaya di tanah penelitian. Data dianalisis dengan menggunakan indeks keanekaragaman Shannon-Wiener. Hasil penelitian menunjukkan bahwa nilai indeks keanekaragaman pada 1,80. Kesimpulan dari hasil ini adalah keanekaragaman spesies serangga pada monokultur lebih rendah dari tanah polikultur Tamarillo di Dataran Tinggi Dieng. Peran potensial serangga adalah musuh alami dan serangga perusak. Kata Kunci: Keanekaragaman, Tamarillo, Monokultur, Polikultu

scholarly journals Diversity and population structure of Dipterocarpaceae species in Weh Island Nature Tourism Park, Indonesia

2021 ◽  
Vol 21 (2) ◽  
pp. 99-104
Author(s):  
RIDHA UL FAHMI ◽  
SAIDA RASNOVI ◽  
ESSY HARNELLY
Keyword(s):  
Population Structure ◽  
Species Diversity ◽  
Stand Structure ◽  
Diversity Index ◽  
Species Abundance ◽  
Major Effect ◽  
Data Availability ◽  
Nature Tourism ◽  
Plant Groups ◽  
Index Value

The Dipterocarpaceae family is one of the identified plant groups with high conservation value that exist in Weh Island Nature Tourism Park. However, the data availability on the species diversity and population structure of Dipterocarpaceae in Weh island in particular and Aceh in general is still very limited. Thus, it is necessary to conduct studies on species diversity and population structure of Dipterocarpaceae from Weh Island. This study aims to obtain data on species abundance and diversity, species composition of each stratum, population structure, and stand structure of Dipterocarpaceae in Weh Island Nature Tourism Park. This research utilized transect method with randomly selected plots according to topographic conditions. We found two Dipterocarpaceae species: Shorea sumatrana (Slooten) Desch and Dipterocarpus hasseltii Blume. Shorea sumatrana (Slooten) Desch has the greatest abundance of all types and strata. The diversity of Dipterocarpaceae species in Weh Island Nature Tourism Park is categorized as low because the diversity index value is in the range of H'1. This means that the presence of seedling and sapling strata from each species has a major effect on the survival of the Dipterocarpaceae family in the future. The stand structure of the Dipterocarpaceae family in normal conditions is indicated by an inverted “J” shaped diagram.

scholarly journals Species diversity and spatial distribution of amphibian fauna along the altitudinal gradients in Jigme Dorji National Park, western Bhutan

2019 ◽  
Vol 11 (10) ◽  
pp. 14249-14258
Author(s):  
Bal Krishna Koirala ◽  
Karma Cheda ◽  
Tshering Penjor
Keyword(s):  
Spatial Distribution ◽  
National Park ◽  
Diversity Index ◽  
Species Abundance ◽  
Climatic Conditions ◽  
Primary Forest ◽  
Habitat Types ◽  
Elevation Gradients ◽  
Significant Difference ◽  
Survey Technique

This paper presents the results of a study conducted on the diversity and spatial distribution of amphibian fauna in two different habitat types along the elevation gradients of Mochu River valley in Jigme Dorji National Park, Bhutan.  The survey was conducted from November 2017 to February 2019.  The study aimed to assess the diversity and distribution of amphibians using an opportunistic visual encounter survey technique.  A total of 16 species of amphibians belonging to nine genera distributed among seven families were documented during the study period. The Shannon diversity index was relatively higher in the primary forest habitat than in the agro-ecosystem, however, there was no statistically significant difference of species abundance. The decreasing trend of diversity and abundance of amphibian fauna was noticed towards higher altitudinal zones.  About 56% of species were recorded in the lower sampling sites (1200–1600m) indicating more favourable climatic conditions and habitat types for amphibian assemblages at lower elevations.

scholarly journals STUDY ON MACROZOOBENTHOS COMMUNITY IN THE WATERS OF THE RIVER AIR PERIKAN MUNICIPALITY OF PAGAR ALAM SOUTH SUMATRA

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Rafles Tampubolon ◽  
Zazili Hanafiah ◽  
Endri Junaidi
Keyword(s):  
Species Composition ◽  
Sampling Method ◽  
Diversity Index ◽  
Similarity Index ◽  
Survey Method ◽  
Research Station ◽  
Sampling Station ◽  
Sampling Point ◽  
Leaf Pack ◽  
Index Value

The research entitled “ Study on Macrozoobenthos Community in the Waters of the River Air Perikan Pagar Alam Municipality”, was conducted from November 2007 until March 2008. The aims of the research: to know about composition, density, diversity index, dominancy index, and similarity index, which based on the different microhabitat types. Sampling was carried out on November 2007. Five sampling stations were determined by survey method  and the Purposive Sampling method was used at each sampling point to find stony, gravel, sandy and leaf pack area as a different microhabitat substrate. Twenty one orders (Ephemeroptera, Trichoptera, Diptera, Plecoptera, Collembola, Hemiptera, Odonata, Coleoptera, Lepidoptera, Megaloptera, Hymenoptera, Orthoptera, Decapoda, Plesiopora, Tricladida, Amphipoda, Isopoda, Mesogastropoda, Ctenobranchiata, Eulamellibranchiata, and Rhynchobdellida) which are consisted of 70 families and 151 genera were identified from four types of substrates on each sampling station. According to this research, station 4 has the highest in composition (80 genera), and the lowest one at station 1(33 genera). The highest abundance was 12589 ind./m2  found in the station 5, and the lowest one was in the station 1 approximately 880 ind./m2. For the diversity index value, station 3 was the highest (3.1) and the lowest one was station 5 (1.9). The Dominancy index was found in station 5 at the sandy substrates was  approximately 0,8 index, which dominated by Tubifex sp. There were  differences species composition  on each station. Keywords : Macrozoobenthos, community, the river Air Perikan.

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