scholarly journals Composition & Ecological Role of Soil Macrofauna in Selorejo and Punten Citrus Farming, Malang - East Java

2021 ◽  
Vol 9 (1) ◽  
pp. 10-18
Author(s):  
Fitria Karinasari ◽  
Zulfaidah Penata Gama ◽  
Amin Setyo Leksono
Keyword(s):  
Diversity Index ◽  
Agricultural System ◽  
Abiotic Factor ◽  
Ecological Role ◽  
Importance Value Index ◽  
Importance Value ◽  
Soil Macrofauna ◽  
Wiener Diversity Index ◽  
Citrus Farming

Conventional Citrus crops farming is an Citrus farming system that uses Citrus cultivation techniques with maximum use of chemicals and organics material and there is to support a sustainable agricultural system. Indicators of environmental quality can be known from the composition and ecological role of fauna, one of which is soil macrofauna. This research aims to investigate the diversity and community structure of the soil macrofauna and to identification its role in the Citrus farming at Selorejo, Dau and Punten Villages, Bumiaji, Malang Regency.This study is a descriptive exploratory study in order to study on soil macrofauna capturing at each location for three times. The observation method of soil macrofauna used pitfall traps and handshorter methods. All data was tabulated used Microsoft Excel. Abiotic factor measurements for two locations have no different value in each sampling plot. The composition of soil macrofauna is obtained from the important value index (IVI) and the Shannon-Wiener diversity index (H'). Soil macrofauna was obtained from two locations as many as 28 families with the highest importance value index (IVI), namely Formicidae. The results showed that Selorejo Citrus farming consists of Predator 46%, Herbivorous 25%, Decomposer 11%, Scavenger 7%, and others 11%, while in Punten Citrus farming consists of 55% Predator, 10% Herbivorous,15% Decomposer,5% Scavenger, and others 15%.

scholarly journals Floristic structure and ecological role of Rourea afzelii stand in three savannah ecosystems from Cameroon

2021 ◽  
Vol 8 (1) ◽  
pp. 5-11
Author(s):  
Awé Djongmo Victor ◽  
Noiha Noumi Valery ◽  
Zapfack Louis
Keyword(s):  
Diversity Index ◽  
Basal Area ◽  
Carbon Price ◽  
Shannon Index ◽  
Ecological Role ◽  
Importance Value Index ◽  
Importance Value ◽  
Voluntary Market ◽  
Floristic Structure

The present study investigated the floristic structure and ecological role of Rourea afzelii stands insavannah, forest galleries and swampy areas to Cameroon. An 80 m x 50 m transect method wasundertaken to measure floristic diversity using Shannon index, Pielou equitability, Simpson’s indexand the importance value index. The structure of Rourea afzelii stands is determined by density,basal area and biovolume. The results of this study show that Rourea afzelii stands are morediversified in savannah with a Shannon diversity index (ISH =4 ± 0.03bit). The highest log stabilityof Rourea afzelii stands is observed in the savannah (EQ=0.75 ± 0.008). The Simpson index of theRourea afzelii stands is larger in the forest gallery (D=0.088 ± 0.0022). Rourea afzelii Stands aredenser in savannah (113 ± 2.54 individuals/ha). The basal area and biovolume of Rourea afzeliistands are very high in swamp area (St=15.75 ± 0.02 m2/ha, Biov=9.08 ± 0.12 m3/ha). The diametricstructure has an asymmetrical “L” shaped appearance, indicating a strong regeneration of Roureaafzelii Stands in the three sites studied. Rourea afzelii Stands in forest galleries sequestered morecarbon (26.41 ± 0.0015 ton C/ha) than those in savannahs and swampy areas. This valuecorresponds to sequestration of carbon dioxide of 96.92 ± 0.82 ton CO2/ha. Economically, thiscorresponds to the CDM carbon price (290.77± 3.332 Euros/ha), a Voluntary Market Carbon Priceof 455.54 ± 1.908 Euros/ha, a REDD + carbon price of 9692 ± 8.152 Euros/ha. In conclusion, theresults of this study can be used in the context of protection and conservation as well as thedomestication of such a species.

scholarly journals Short Communication: Species composition and diversity of vegetation in dryland agricultural landscape

2020 ◽  
Vol 22 (1) ◽  
Author(s):  
Ida Ardiyaningrum ◽  
MARIA THERESIA SRI BUDIASTUTI ◽  
KOMARIAH KOMARIAH
Keyword(s):  
Species Composition ◽  
Agricultural Landscape ◽  
Short Communication ◽  
Diversity Index ◽  
Sampling Technique ◽  
Terrestrial Ecosystems ◽  
Importance Value Index ◽  
Importance Value ◽  
Vegetation Diversity ◽  
Wiener Diversity Index

Abstract. Ardiyaningrum I, Budiastuti MTS, Komariah. 2021. Short Communication: Species composition and diversity of vegetation in dryland agricultural landscape. Biodiversitas 22: 65-71. Drylands are a part of the terrestrial ecosystems with a relatively larger area compared to wetlands. Selo has dryland with steep slopes and high rainfall, resulting in relatively high soil erosion. The land use in this sub-district is dominated by plantations and agriculture, with conditions that have not been fully balanced by trees as a means of controlling erosion and supporting vegetation diversity. Therefore, studies on biodiversity are important as an indicator of dryland sustainability, especially in terms of soil and water conservations. This research aimed to study the species composition and diversity of vegetation in the dryland agricultural landscape in Selo Sub-district, Boyolali District, Central Java Province, Indonesia. Vegetation analysis was performed by using the quadratic sampling technique for tree category, pole category, sapling category, and seedling categories. The results indicated that Fabaceae had the highest number of species. Tree species with the highest Importance Value Index were Toona sureni, Artocarpus heterophyllus, and Casuarina junghuhniana, respectively. The Shanon-Wiener Diversity Index showed that the vegetation at tree, pole, and sapling stages had a moderate diversity, and seedling-stage vegetation had a low diversity.

scholarly journals Estructura y diversidad de la vegetación del matorral espinoso tamaulipeco con condiciones prístinas en el noreste de México

2018 ◽  
Vol 66 (4) ◽  
Author(s):  
Carlos Gerardo Valdez Marroquín ◽  
Marco Antonio Guzmán ◽  
Arcadio Valdés ◽  
Rahim Forougbakhch ◽  
Marco Antonio Alvarado ◽  
...  
Keyword(s):  
Plant Community ◽  
Diversity Index ◽  
Importance Value Index ◽  
Importance Value ◽  
Coverage Density ◽  
A Value ◽  
Wiener Diversity Index ◽  
Structural Variables ◽  
Species Area ◽  
The One

Tamaulipan scrubland is a type of shrub vegetation endemic to Northeastern Mexico and Southern Texas in the U.S.The structure of the Tamaulipan scrubland was evaluated in the study, establishing the minimum area with plots of 256 m2 by determining the species-area curve, valuing the composition and diversity of the strata of the plant species (arboreal, shrub, low forest, semi shrubby, herbaceous and epiphytes); three sampling sites of 16 × 16 m were established. Dasometric information such as height, diameter and cup coverage was recorded to determine the structural variables of coverage, density, relative density, dominance, relative dominance, frequency, relative frequency and Importance Value Index, as well as estimation of the Margalef richness index, Shannon-Wiener diversity index, Menhinick, Simpson and Pielou’s evenness index. The floristic richness was of 33 species distributed in 30 genera and 19 families, leaving the predominance value of the highest species of Leguminosae (Fabaceae). Six strata were recognized for the studied vegetation from which the highest IVI was Helietta parvifolia with 17.68 % for the shrubby stratum with 14 species and within the plant community of the MET the IVI was 8.53 %; for the low forest stratum with 8 species, the one with the highest IVI was Bernardia myricifolia with 39.20 %; and within the vegetal community 7.74 % for the semi shrubby there were 7 species where Lantana canescens has an IVI of 60.38 % and of 13.09 % inside the community. For the herbaceous stratum with 2 species, Wissadula sp. dominates with 54.20 % and 2.06 % for the community. In the arboreal stratum, the species with the highest IVI was Celtis laevigata with 100.00 % and when integrated to the plant community, it presented a value of 1.98 %. For the stratum formed by the epiphytes, the species Adiantum capillus-veneris had an IVI of 100 % and inside the plant community presented an IVI of 1.55 %. For the MET plant community studied, an H' value of 2.42 and a DMg value of 4.34 was obtained.

scholarly journals Studi Ekologi Kuantitatif Hutan Pilan Sebagai Dasar Pengembangan Kebun Raya Gianyar

2018 ◽  
Vol 12 (2) ◽  
pp. 184
Author(s):  
Farid Kuswantoro ◽  
I Nyoman Lugrayasa ◽  
Wawan Sujarwo
Keyword(s):  
Ecological Study ◽  
Diversity Index ◽  
Similarity Index ◽  
Principal Component ◽  
Importance Value Index ◽  
Importance Value ◽  
Sacred Forest ◽  
Wiener Diversity Index ◽  
Level Data ◽  
Study Results

Penelitian ekologi kuantitatif diperlukan sebagai baseline dalam proses pembangunan dan pengembangan kebun raya di masa mendatang. Penelitian ini bertujuan untuk mendapatkan data vegetasi di kawasan hutan yang akan dibangun kebun raya dan menganalisisnya secara kuantitatif. Penelitian dilakukan dengan metode petak kuadrat (PU), dengan petak ukur 20 m x 20 m untuk pengamatan tingkat pohon dan tiang, serta 2 mx 2 m untuk pengamatan tingkat tumbuhan bawah. Analisis data dilakukan mengunakan indeks nilai penting, indeks keanekaragaman ShannonWiener, indeks similaritas, analisis kluster, dan analisis komponen utama (PCA). Komunitas tumbuhan di hutan Pilan didominasi oleh Magnolia montana (Blume) Figlar dan Arenga pinnata (Wurmb) Merr. pada tingkat pohon serta Daemonorops sp. pada tingkat tumbuhan bawah. Indeks keanekaragaman pada tingkat pohon dan tiang menunjukan nilai sedang dan rendah pada tingkat tumbuhan bawah, sementara indeks similaritas mayoritas kombinasi PU adalah rendah. Hasil kluster menunjukan terbentuknya dua subset pada kedua tingkat pertumbuhan, dimana PU VI berada di luar kluster sedangkan PCA menunjukan setiap PU mendukung jenis tumbuhan yang berbeda-beda. Hasil penelitian ini menyimpulkan bahwa komposisi vegetasi hutan Pilan mendekati klimaks yang disebabkan karena statusnya sebagai hutan keramat sehingga relatif bebas dari gangguan. Faktor-faktor yang diduga mempengaruhi perbedaan komposisi tumbuhan di setiap PU adalah pH tanah, intensitas sinar matahari, jenis pohon yang dominan, efek tepi, dan persebaran bijioleh hewan.Quantitative Ecological Study of Pilan Forest as a Baseline for Development of Gianyar Botanic GardenAbstractQuantitative ecological research is needed as a baseline in the future construction and development of botanic gardens. This study aims to acquired the vegetation data in the forest area where a botanic garden will be established and analyse it quantitatively. The study was conducted using the quadrat plot (PU) method, with a plot measuring 20 m x 20 m for observation and tagging of all trees and saplings, as well as 2 mx2 m for observation of the understorey level. Data analysis was performed by utilising the importance value index, Shannon-Wiener diversity index, similarity index, cluster analysis, and principal component analysis (PCA). Plant communities in Pilan Forest were dominated by Magnolia montana(Blume) Figlar and Arenga pinnata(Wurmb) Merr. at the canopy level and Daemonorops sp. in the understorey level. The diversity index was moderate and low respectively, while the similarity index was mostly low. The clustering results showed the formation of two subsets in both growth rate as the PU VI was outside the cluster and the PCA indicated that each plot supports different plant species. The study results concluded that the composition of vegetation at Pilan forest is approaching the maximum diversity, and is relatively undisturbed due to its status as a sacred forest. Factors thought to affect the different composition of plants in each plot was the pH of the soil, the intensity of sunlight, dominant tree species, edge effects and distribution of seeds by animals.

scholarly journals Plant diversity in logged over forest in Mahakam Ulu, East Kalimantan, Indonesia

2021 ◽  
Vol 22 (11) ◽  
Author(s):  
Adhy widya Setiawan ◽  
ALBERTUS TJIU ◽  
ARI MEIDIDIT ◽  
ISWINANTO ISWINANTO ◽  
AMMAR GINANJAR ◽  
...  
Keyword(s):  
Plant Diversity ◽  
Diversity Index ◽  
Similarity Index ◽  
Iucn Red List ◽  
Tree Level ◽  
Line Transect ◽  
Importance Value Index ◽  
Importance Value ◽  
East Kalimantan ◽  
Wiener Diversity Index

Abstract. Setiawan AW, Tjiu A, Meididit A, Iswinanto, Ginanjar A, Atut Y, Agusti R. 2021. Plant diversity in logged over forest in Mahakam Ulu, East Kalimantan, Indonesia. Biodiversitas 22: 4829-4838. A study of flora was conducted in the Ratah Timber concession area. Objectives of this study was to calculate the Importance Value Index (IVI) and identify species diversity in Mahakam Ulu, East Kalimantan. A survey was carried out in 128 plots within 13 transects placed purposively. Vegetation sampling was conducted using line transect and a quadrat method. As many as 530 species belonging to 79 families were found. Of these species, 420 species were found in observation plots with 374 of the species being tree. The most dominant tree species were Endertia spectabilis, Shorea pinanga and Shorea leprosula with IVI of 10.24%, 8.25%, and 6.96%, respectively. In total, 114 species or 21.5% are endemic species of Borneo. The Shannon-Wiener diversity index at tree level was 5.51 and at seedling level was 4.95. The highest Similarity Index was found between transects 23 and 21, meanwhile the lowest was between transects 05 and 15. This study found 61 species which are classified on the International Union for Conservation of Nature (IUCN) Red List (2020-1) as critically endangered (16), endangered (11), and vulnerable (34) species.

scholarly journals Strukturdan Asosiasi Komunitas Tumbuhan Bawahdi Resort Cikaniki, Taman Nasional Gunung Halimun Salak

2017 ◽  
Vol 8 (2) ◽  
Author(s):  
Rizmoon Nurul Zulkarnaen
Keyword(s):  
Diversity Index ◽  
Ground Cover ◽  
Water Source ◽  
Sampling Location ◽  
Abiotic Factor ◽  
Importance Value Index ◽  
Importance Value ◽  
Chi Square ◽  
Dominant Type ◽  
Chi Square Analysis

A study on structure and association of ground cover plants commnunity was conducted in Cikiniki Resort, Gunung Halimun Salak National Park, West Java. The aimed of this study was to determine the structure and degree of association of ground cover plant that dominates with others ground cover plants. Plot observation using purposive sampling method. The sampling location was divided into two observation sites near the water source and away from the water source. We developed 20 plots with measure on 2 x 2 m2. The data obtained are frequency, density, dominance, Importance Value Index (INP), Distribution Index and Diversity Index Type. The relationship between abiotic factor and vegetation association was analyzed using Chi-Square analysis. The results showed that the dominant type was Schismatoglottis calyptrata (Roxb.) Zoll. & Moritzi (INP: 41.67%), Homalomena cordata Schott (INP: 16.87%), Cyrtandra populifolia Miq. (INP: 12.27%), Psychotria viridiflora Reinw. Ex Blume (INP: 11.79%) and Amischotolype mollissima (Blume) Hassk. (INP: 10,77%). Based on the calculation of chi-square (X2) associations S.calyptrata with other dominant species have low values of 0.26 (H. cordata), 0.25 (C. populifolia), 0.275 (P. viridiflora) and has no association with A. mollissima.

scholarly journals Vegetation Analysis in Community Forests of Terai Region, Nepal

2019 ◽  
Vol 8 (3) ◽  
pp. 68-82
Author(s):  
Rajeev Joshi ◽  
Ramesh Chhetri ◽  
Karan Yadav
Keyword(s):  
Tree Species ◽  
Diversity Index ◽  
Systematic Sampling ◽  
Vegetation Analysis ◽  
Importance Value Index ◽  
Importance Value ◽  
Community Forests ◽  
Shorea Robusta ◽  
Wiener Diversity Index ◽  
Individual Trees

This paper deals with the study of vegetation analysis of tree species in Ganesh and Ramnagar community forests (CF) of the Terai region.  For the study, altogether 63 concentric sample plots (each plot of 500 m2) were laid using systematic sampling with a sampling intensity of 0.5%.  A total of 967 individual trees representing 16 different tree species were identified. Both CF was dominated by monospecies such as Mallotus philippensis (Ganesh CF) and Shorea robusta (Ramnagar CF) based on the Importance Value Index (I.V.I). Likewise, the Shannon-Wiener diversity index was higher in Ganesh CF whereas the dominance index was low. Similarly, the index of evenness and richness was also slightly higher in Ganesh CF than Ramnagar CF. The study provided information about the structure, composition, and dominance of tree species which is essential for conservation and sustainable management of community forests. Therefore, this article serves as an example of establishing community forests so as to initiate the conservation and preservation of local biodiversity.

scholarly journals KEANEKARAGAMAN JENIS POHON DI REPONG DAMAR PESISIR TENGAH DAN PESISIR SELATAN

2021 ◽  
Vol 9 (2) ◽  
pp. 260
Author(s):  
Mefki Sunardi ◽  
Afif Bintoro ◽  
Rusita Rusita
Keyword(s):  
Tree Species ◽  
Diversity Index ◽  
Forest Products ◽  
Buffer Zone ◽  
Systematic Sampling ◽  
Importance Value Index ◽  
Importance Value ◽  
Wiener Diversity Index ◽  
Starting Point ◽  
Non Timber Forest Products

Repong Damar is a form of hereditary since the days of the Dutch colonial government owned by the Krui Lampung people in the West Coast. Repong damar functions as a buffer zone in the Bukit Barisan Selatan National Park. The flagship product from Non-Timber Forest Products (NTFPs) in Indonesia found in Krui Pesisir Barat is Damar Mata cat (Shorea javanica). The management and use of resin repong can cause various types of plants. Damar reong found in the Regency of Pesisir Barat has very important benefits for life, and therefore it is necessary to act as a preservation effort for this repong damar to remain sustainable and continue to grow. One of the efforts made is to analyze the diversity of tree species that are in the resin dunk. This study aims to determine the diversity of tree species in the Central Pongir Pongon Repong Pahmungan and Tenumbang Pekon Coastal Equipment and to compare the diversity of tree species in the Central Pekon Pahmungan and South Pekon Tenumbang Pekon Coastal Areas. This research was conducted in August-September 2019 which is located in two locations, namely Tenumbang Pekon, Pesisir Selatan District and Pahmungan Pahmungan Tengah Pesisir Tengah District, Pesisir Barat District. The method used to determine the diversity of tree species using the plot line method where the determination of the plot starting point is done by Systematic sampling with random sampling. Analysis of the data to be used is the relative density (KR), relative frequency (FR), and relative closure area (CR). Importance Value Index (INP) = KR + FR + CR (Indriyanto, 2006). The Diversity Index used is the Shanon Wiener Diversity Index (H '). The results of the research that have been carried out there are 28 species of trees found in Pahonungan Pahmungan, Central Pesisir Tengah and 32 species found in Tenumbang Pekon, Pesisir Selatan District and Diversity of tree species in Pahonungan Pekm Tengah, Pesisir Tengah District, 1.86 and Diversity of tree species in Pekon Tenumbang. Pesisir Selatan District at 2.44.

scholarly journals Avifaunal Diversity and Community Structure in Universitas Brawijaya Forest, East Java, Indonesia

2021 ◽  
Vol 6 (1) ◽  
pp. 58335
Author(s):  
Agus Nurrofik ◽  
Muhammad Fathoni ◽  
Agung Sih Kurnianto ◽  
Luhur Septiadi ◽  
Nia Kurniawan
Keyword(s):  
Community Structure ◽  
Conservation Management ◽  
Diversity Index ◽  
Conservation Status ◽  
Similarity Index ◽  
Jaccard Similarity ◽  
Importance Value Index ◽  
Importance Value ◽  
Wiener Diversity Index ◽  
Feeding Specialization

Avifauna inhabiting the mountainous forest ecosystem is severely threatened by anthropogenic disturbances, especially in the Java island of ­­Indonesia. Yet, efforts to monitor the avifauna diversity are lacking, including in one of the mountainous forest areas, Universitas Brawijaya Forest (UBF). In this study, information about diversity, community structure, feeding specialization, and conservation status of avifauna is presented. Observations were conducted from December 2019 to February 2020 on two designated tracks with different degree of disturbances. Data were analyzed based on their conservation status, local distribution, feeding specialization (Jaccard similarity index), species richness, total abundance, species diversity (Shannon-Wiener diversity index), and importance value index (IVI). A total of 51 species from 27 families were identified. Two species at risk (one Near Threatened and one Endangered) and 9 protected avifauna were noted. This study can be used as the baseline data for future conservation management in the UBF.

scholarly journals The Abundance and Diversity of Grasshopper (Orthoptera) in Batu City, East Java

2021 ◽  
Vol 9 (1) ◽  
pp. 19-26
Author(s):  
Mufti Abrori ◽  
Amin Setyo Leksono ◽  
zulfaidah Penata Gama
Keyword(s):  
Negative Impact ◽  
Diversity Index ◽  
Abiotic Factors ◽  
Natural Habitat ◽  
Ecological Factors ◽  
Importance Value Index ◽  
Importance Value ◽  
Grasshopper Species ◽  
Wiener Diversity Index ◽  
Abundance And Diversity

Grasshoppers belong to the order Orthoptera in the insect class. The Orthoptera order is divided into two major suborders, namely Ensifera and Caelifera. Most grasshopper species play a role as herbivores and are a good source of protein for other animals The abundance and diversity of grasshoppers are more stable in an ecosystem with less disturbance and vice versa. The factors that influence the diversity of grasshoppers include ecological factors such as vegetation structure, atmospheric temperature, relative humidity. This study aims to analyze the abundance and diversity of grasshopper communities (Orthoptera) in Batu City, East Java. There are four research locations, namely Tahura R. Soerjo Cangar, Sumbergondo Village, Coban Talun, Junrejo District. Measurement of biotic and abiotic factors in grasshopper habitat (orthoptera), data analysis using the Shannon Wiener diversity index (H'), Importance Value Index (IVI), and biplot analysis. The results showed that the total number of grasshoppers in the ecosystem found was 754 individuals divided into 11 species, 2 families, and 7 subfamilies from Caelifera. Meanwhile, 201 individuals were found in the type of Ensifera, which were divided into 4 species from 2 families and 2 subfamilies. This study concludes that the species diversity of grasshoppers in several ecosystems in Batu City in the suborder Caelifera with the highest diversity is at the Junrejo location. Whereas in the suborder Ensifera the highest diversity was in the Sumbergondo location. The vegetation area has an influence on the diversity of grasshoppers both from the two suborders. The reduction in natural habitat for grasshoppers due to a large number of land uses by humans also has a negative impact on the sustainability of grasshoppers. Environmental factors affect the abundance and diversity of insects including grasshoppers, the response of each type of grasshopper to environmental characteristics affects their existence in a habitat.

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