scholarly journals PERBANDINGAN VEGETASI GULMA PADA PERKEBUNAN KELAPA SAWIT (Elaeis guineensis Jacq.) MENGHASILKAN DAN BELUM MENGHASILKAN DI LAHAN GAMBUT

2021 ◽  
Vol 12 (1) ◽  
pp. 17
Author(s):  
Endah Dwi Susanti ◽  
Novita Hera ◽  
Syukria Ikhsan Zam
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Diversity Index ◽  
Sampling Technique ◽  
Control Measures ◽  
Vegetation Analysis ◽  
Species Diversity Index ◽  
Immature Oil ◽  
Composition And Structure ◽  
Weed Diversity

Weed vegetation analysis is important to do in order to know the composition and structure of the vegetation to determine the appropriate weed control measures. This study aims to compare the composition and structure of weeds on peatland immature oil palm plantations and mature palm. This research was conducted from October to December 2020. Vegetation analysis was carried out using a survei method with purposive sampling technique. The parameters observed were density, frequency, dominance, important value index (INP), summed dominance ratio (SDR) and species diversity index (H'). The results showed that the composition of weeds on immature oil palm plantations was found 12 species with number of individual 847, while on mature palm found 9 species with number of individuals 980. The dominant weed structure on immature oil palm plantations is Lempuyangan with SDR values 29,9 % and mature palm is Bandotan with SDR value 23,4%. Weed diversity index on immature oil palm plantations and mature palm is categorized as high with a value of 1.50 for immature oil palm plantations and 1.65 for mature palm.

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 IDENTIFICATION OF MEDICINE PLANTS IN THE SRIWIJAYA BOTANICAL GARDEN, BAKUNG VILLAGE, INDRALAYA UTARA DISTRICT, OGAN ILIR REGENCY, SOUTH SUMATRA PROVINCE

2021 ◽  
Vol 10 (1) ◽  
pp. 24
Author(s):  
Sasua Hustati Syahroni ◽  
Asvic Helida ◽  
Amer Jaya
Keyword(s):  
Medicinal Plants ◽  
Medicinal Plant ◽  
Diversity Index ◽  
Sampling Technique ◽  
Botanical Garden ◽  
Species Diversity Index ◽  
Conservation Area ◽  
Melastoma Malabathricum ◽  
A Value ◽  
Importance Index

This study aims to determine and identify the composition and type of structure medicinal plants in the Sriwijaya botanical garden through analysis of medicinal plant vegetation by using a species diversity index. The research method used was a survey with a sampling technique used was a sampling method or intentionally from the area of the Sriwijaya Botanical Garden conservation area. Using the formula for sampling intensity [IS] of 2% and a total area of 100 Ha, the number of sample plots obtained is 50. This study identified 43 families and 76 species of medicinal plants. The highest importance index (INP) of the lower plants in the lower plantswas Senduduk (Melastoma malabathricum) a value 29,797%, while the lowest INP is Cataract (Laurentia longifora), Curry Leaf (Murraya koenigii), Kumis Kucing (Orthosiphon aristatus) a 0,724%. While in INP, the highest mastery of medicinal plants at sapling level is Jelutung (Dyera costulata) a value 40.741%, while the lowest INP a butterfly (Bauhinia porpurea) with 4.204%. The diversity indexes of medicinal plants at the understorey and sapling levels were found to be 2.00 and 1.03, in both, indicating that understorey and sapling diversity was moderate and the community state was very stable. While the diversity index of medicinal plants at the seedling level was 0.94, indicating that medicinal plant diversity at the seedling stage is poor and the community state is quite poor.

scholarly journals Species composition and structure of Angke Kapuk Mangrove Protected Forest, Jakarta, Indonesia

2021 ◽  
Vol 22 (9) ◽  
Author(s):  
Amandita Lintang Rumondang ◽  
CECEP KUSMANA ◽  
SRI WILARSO BUDI
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Distribution Pattern ◽  
Diversity Index ◽  
Avicennia Marina ◽  
North Coast ◽  
Species Diversity Index ◽  
Mangrove Species ◽  
Composition And Structure ◽  
Species Composition And Structure

Abstract. Rumondang AL, Kusmana C, Budi SW. 2021. Species composition and structure of Angke Kapuk Mangrove Protected Forest, Jakarta, Indonesia. Biodiversitas 22: 3863-3871. Angke Kapuk Mangrove Protected Forest (AKMPF) is one of the protected forests in the coastal area of DKI Jakarta, Indonesia. This area is important for the north coast of Jakarta, hence it has function to protect the land from sea abrasion, seawater intrusion, and seawater flooding. This study aims to determine the condition of forest structures and species composition in the Angke Kapuk Mangrove Protected Forest (AKMPF) to obtain useful information for sustainable mangrove forest management. Vegetation data were collected using the sampling unit of transect for tree and line plot for forest regeneration inventories. Those data were analyzed for the density, frequency, dominance, species diversity, and species distribution pattern. The obtained results show that AKMPF consists of 13 mangrove species, including 7 species of true mangrove, 5 species associated mangrove, and 1 species of palm, with the dominant species, are Avicennia marina for tree with its regenerations and Acrostichum aureum for groundcover. Overall, the species diversity index in this area was classified as low category. Mangrove trees in this area have height class between 4-28 meters formed bell-curve, while stem diameter class were between 10.00-69.75 cm formed L-curve. The distribution pattern of species in this areal generally was clumped.

scholarly journals Vegetation composition in gold post-mining land of PT. Sultra Utama Nickel, Bombana District

2021 ◽  
Vol 883 (1) ◽  
pp. 012065
Author(s):  
F D Tuheteru ◽  
Husna ◽  
Basrudin ◽  
A Arif ◽  
Albasri ◽  
...  
Keyword(s):  
Plant Species ◽  
Diversity Index ◽  
Sampling Technique ◽  
Imperata Cylindrica ◽  
Vegetation Composition ◽  
Vegetation Analysis ◽  
Plant Identification ◽  
Solanum Torvum ◽  
Scoparia Dulcis ◽  
Sida Rhombifolia

Abstract This study aimed to determine vegetation composition in the gold post-mining land of PT Sultra Utama Nickel in Bombana District. The method used in this research was the plotted path method by placing transects in accordance with purposive sampling technique. Transects were arranged systematically with a between-transects distance of 50 m The number of transects arranged were 18 transects with 3 plots each with size of each plot was 2 x 2 m, resulted in a total plot of 54 plots. Plant identification results showed that plant species found in the study area were 19 families, 30 genera, 34 species and 4 habitat. Results of vegetation analysis showed that of the 34 plant species found in the research location, plant species with the highest IVI value of 34.54% was Imperata cylindrica. The lowest IVI of 0.54% were found for Lygodium sp., Glochidion sp., Seleria levis Retz, Scoparia dulcis L., Sida rhombifolia L and Solanum torvum. The diversity index was 2.59, indicating moderate abundance category.

scholarly journals Vegetation analysis of the Forest Park of Pocut Meurah Intan (THRPMI), Seulawah Subdistrict, Aceh Besar, Aceh Province

2022 ◽  
Vol 956 (1) ◽  
pp. 012010
Author(s):  
D Djufri ◽  
H Hasanuddin ◽  
A Abdullah ◽  
V R Puspa
Keyword(s):  
Theobroma Cacao ◽  
Diversity Index ◽  
Similarity Index ◽  
Eucalyptus Urophylla ◽  
Community Similarity ◽  
Vegetation Analysis ◽  
Species Diversity Index ◽  
Forest Park ◽  
Aceh Province ◽  
Pinus Merkusii

Abstract A study entitled “Vegetation Analysis of the Forest Park of Pocut Meurah Intan, Seulawah Subdistrict of Aceh Besar, Aceh Province” has been conducted since April 2019 until November 2019. A transect method and squares were used in this study. The transect method was used to record species composition throughout the observation stations (inventory of species), including stands of pine (Pinus merkusii) with ten stations transect, stands of eucalyptus (Eucalyptus urophylla), stands of cacao (Theobroma cacao), and natural forests within a radius of 2 km around the THRPMI office. The squares method was used to record the species in the same locations to replicate each station by ten squares of samples for vegetation analysis. The parameters measured in the field were frequency, density, and dominance of each species. Analysis of vegetation covered Importance Values (IV), Diversity Index (H ’), and the Similarity Index (SI). Results showed that there were 49 familia found with the composition of species in the entire observation stations comprising of 111 species with 58 species of trees, 12 species of shrubs, and 41 species of herbs. Additionally, the results showed that the species of vegetation with the highest IV were coarse grass (Imperata cylindrica), lawn pait (Axonopus compresus), and selasi (Vernonia cinerea) with IV of 72.01, 65.34, and 57.24, respectively. Results of analysis Species Diversity Index (H ’) showed that the Pinus merkusii had H’ of 2,134, whereas Eucalyptus urophylla had H ’of 1.965, and Theobroma cacao had H’ of 1,067. The results of the analysis of Community Similarity Index showed that all stations had the same relative SI of 75%. It can be concluded that the species composition of the study area dominated by tree species, species diversity index (H ’) in all observation stations varied ranging from 1.067 to 2.134, and the relative Community Similarity Index was 75%.

scholarly journals Abundance and Diversity Index of Weeds in Oil Palm and Vegetable Intercropping in Rainforest Zone of Nigeria

2021 ◽  
Vol 36 (2) ◽  
pp. 227
Author(s):  
Ayodele Samuel Oluwatobi ◽  
Kehinde Stephen Olorunmaiye
Keyword(s):  
Oil Palm ◽  
Growth Habit ◽  
Diversity Index ◽  
Weed Species ◽  
Immature Oil ◽  
Weed Infestation ◽  
Ondo State ◽  
Abundance And Diversity ◽  
Early Phases ◽  
Rainforest Zone

The problem of severe weed infestation often arises during the early phases of establishment of oil palm field due to the spacing requirement and growth habit of young oil palm plantation until later years when the canopy closes. This study was conducted at Ala, Akure-North Local Government Area, Ondo State, Nigeria, to investigate the composition of weed species and their distribution in fruit vegetable-juvenile oil palm intercrop. The fallow alleys within the immature oil palm were intercropped with 2 accessions of tomato (NGB 01665 and NG/AA/SEP/09/053) and eggplant (NGB 01737). The sampling of the weed species was carried out with a quadrat (0.25 m<sup>2</sup>). Weed species parameters and the Diversity Index (D) were quantitatively analyzed. The results revealed that members of <em>Asteraceae </em>and <em>Poaceae </em>gave the highest weed species at 3 and 6 weeks after intercropping (WAI) (17.857% and 19.04%) respectively. A total of 23 and 16 were found at 3 and 6 WAI, while the least diversity index of 0.734 was recorded in the immature oil palm/tomato (NGB 01665) plot at 6 WAI. Farmers should be persuaded to simultaneously intercrop fruit vegetables within the alley of juvenile oil palm, particularly at the earlier years prior to closure of the oil palm canopy.

scholarly journals STRUKTUR KOMUNITAS IKAN PADA AREAL BUDIDAYA RUMPUT LAUT SISTEM LONG LINE DI TELUK EKAS LOMBOK TIMUR

2013 ◽  
Vol 13 (2) ◽  
Author(s):  
Muhammad Sulaiman, Lalu Japa Dan I Putu Artayasa
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Fish Community ◽  
Diversity Index ◽  
Sampling Technique ◽  
Fish Community Structure ◽  
Species Diversity Index ◽  
Long Line ◽  
Removal Sampling

ABSTRAKPenelitian ini bertujuan untuk menggambarkan struktur komunitas ikan pada arealbudidaya rumput laut secara long line di Teluk Ekas Lombok Timur. Metode yangdigunakan adalah metode survei dengan menggunakan jaring sapu. Teknik pengambilan datateknik removal sampling. Analisis data untuk menggambarkan struktur komunitas ikanadalah analisis secara diskriptif pada parameter jumlah jenis ikan, kemelimpahan,keanekaragaman, keseragaman, dan dominansinya. Hasil analisis menunjukkan bahwajumlah spesies yang diperoleh sebanyak 886 yang terdiri dari 19 spesies. Spesies ikan yangpaling melimpah adalah Apogon angustatus diikuti oleh Achreichtys tomentosus dan Histriohistrio. Indeks keanekaragaman spesies termasuk kategori sedang. Sedangkan indekskeseragaman kategori tinggi dan dominansi berada pada katagori rendah. Kesimpulan daripenelitian ini dimana indeks keanekaragaman spesies ikan pada areal budidaya rumput laut diperairan Teluk Ekas secara keseluruhan sebesar 2,55. Nilai keanekaragaman tersebut dapatmenunjukkan bahwa rumput laut memiliki peran yang cukup besar dalam meningkatakanjumlah jenis ikan di lokasi studi.Kata-kata kunci: Kemelimpahan, Keanekaragaman, Keseragaman dan DominansiABSTRACTA research on fish community structure in the area of long line seaweeds mariculture of Ekasbay East Lombok was done. Samplings of fish were conducted during September and October2011. Removal sampling technique was applied in this research. Sample of fishes wereidentified and analyzed for density, diversity, equitability or evenees, and domiancy. Total886 fishes collected were identified as 19 species. Three species with the highest density wereApogon angustatus, Achreichtys tomentosus, and Histrio histrio. Species diversity index offish in Ekas bay was in intermediate category. Furthermore, species index equitability orevenees and dominancy were high and low category, respectively. This means there was nofish species dominated other species. All 19 species of fish recorded in this research were inrelative similar number of individual.Key Words: community structure, fish, seaweeds, Ekas bay

scholarly journals Weed Species Distribution of Juvenile Oil Palm Tree (Elaeis guineensis) Intercropped with Maize (Zea mays), Okra (Abelmoshus esculentus) and Pepper (Capsicum anuum var. abbreviatum)

2014 ◽  
Vol 6 (4) ◽  
pp. 483-490
Author(s):  
Ayodele Samuel OLUWATOBI ◽  
Kehinde Stephen OLORUNMAIYE
Keyword(s):  
Zea Mays ◽  
Species Distribution ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Diversity Index ◽  
Block Design ◽  
Control Plot ◽  
Palm Tree ◽  
Weed Species ◽  
Palm Trees

This field experiment was carried out to evaluate the weed species distribution in the experimental plots of an intercrop of juvenile oil palm trees (Elaeis guineensis Jacq.) with maize (Zea mays Linn.), okra (Abelmoschus esculentus Moench) and pepper (Capsicum annuum var. abbreviatum). This was carried out during the cropping season between July and October 2012. The crops were intercropped with the juvenile oil palm trees of about 3-years-old. The experiment was laid out in a completely randomized block design with five (5) replicates. The treatments comprised of intercropping distances of 1 m, 2 m and 3 m each for the three (3) crops (maize, okra and pepper) and a plot for each of the three (3) arable crops without oil palm trees as control. Weed species distribution was carried out in each of the plots to determine the Simpson’s Diversity Index (D), Simpson’s Index of Diversity (1-D) and Simpson’s Reciprocal Index (1/D). Weed species’ frequency, density, relative density, relative frequency, importance value, abundance, dominance and relative dominance were also computed from data collected at 3WAP and 6WAP. The results showed that the control plot has the highest weed species distribution at 3WAP having the lowest Simpson’s Diversity Index (D) of 0.0930. Okra plot has the least weed species distribution with the highest Simpson’s Diversity Index (D) of 0.2726. At 6WAP, the pepper plot has the highest weed species distribution having the lowest Simpson’s Diversity Index (D) of 0.1741. Control plot has the least weed species distribution with highest Simpson’s Diversity Index (D) of 0.2831.

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