scholarly journals Diversity of Insects in Shallot (Allium ascalonicum L) Plantations at Various Altitudes

2018 ◽  
Vol 5 (2) ◽  
pp. 215-222
Author(s):  
Pebi Nurhandani ◽  
Marheni ◽  
Irda Safni ◽  
Setia Sari Girsang
Keyword(s):  
Relative Density ◽  
Seed Quality ◽  
Diversity Index ◽  
Pitfall Trap ◽  
Insect Diversity ◽  
Pests And Diseases ◽  
Plant Pests ◽  
Evenness Index ◽  
North Sumatra

Recently the improvement of shallot seed quality using true shallot seed has been developed. This research was aimed to know diversity of insects and the role of insects on the cultivation of shallot seeds in various altitudes. This research was conducted in three different districts (Deli Serdang, Simalungun and Toba Samosir districts) in Plant Pests and Diseases Laboratory, Faculty of Agriculture, University of North Sumatra, Medan from July 2017 until January 2018. This research used four different insect traps (sweep net, pitfall trap, hand picking, and yellow trap), and repeated for six times. The results showed that insects caught on shallot farmings in Balige highland were 11 orders and 31 families with the highest relative density value was 22.5% and the lowest relative density was 0.35%. The value of insect diversity index of Shannon-Weiner (H') on shallot farming in Balige was 2.72 (moderate) and the value of insect evenness index (E) was 0.71 (high). The insects caught on shallot farming in Pematang Siantar middleland were 11 orders and 22 families with the highest relative density value was 28.7% and the lowest relative density was 0.35%. The value of insect diversity index of Shannon-Weiner (H') on shallot farming in Pematang Siantar 2.42 (moderate) and the value of insect evenness index (E) was 0.71 (high), and on shallot plantations at Lubuk Pakam lowland were 10 orders and 21 families with the highest relative density value was 24.7% and the lowest relative density 0.39%. The value of insect diversity index of Shannon-Weiner (H') was 2.32(moderate) and the value of insect evenness index (E) was 0.85 (high).

scholarly journals KEANEKARAGAMAN JAMUR MAKROSKOPIS DI KAWASAN AIR TERJUN CURUG EMBUN KOTA LUBUKLINGGAU

2021 ◽  
Vol 4 (1) ◽  
pp. 26-32
Author(s):  
Erni Afrita ◽  
Ria Dwi Jayati ◽  
Reny Dwi Riastuti
Keyword(s):  
Relative Density ◽  
Diversity Index ◽  
Schizophyllum Commune ◽  
Sampling Technique ◽  
Species Evenness ◽  
Dominance Index ◽  
Descriptive Data ◽  
Edible Species ◽  
Evenness Index ◽  
Quantitative Descriptive

This study aims to determine the types, diversity index, species evenness index, dominance index, and relative density of macroscopic fungi in the Waterfall area of ​​Curug Embun, Marga Bakti Village, North Lubuklinggau District I. This research is quantitative descriptive. Data collection techniques in this study using the roaming method with sampling using purposive sampling technique. The results of the analysis of the macroscopic fungal diversity index in the Curug Embun Waterfall area were 1.3530, the species evenness index was 0.4516, the dominance index was 0.4776 and the highest relative density was 68.027%.  There are 3 edible species and 17 non-edible mushrooms. 17 species of macroscopic mushrooms in the Waterfall area of ​​Curug Embun were found. The diversity index, dominance, and Simpson index are in the medium category. Schizophyllum commune is the most commonly found species.  

Pan trapping in habitats supporting Platanthera (Orchidaceae) shows little difference in insect family-level diversity

2021 ◽  
pp. 1-13
Author(s):  
Genevieve E. van der Voort ◽  
Manu E. Saunders ◽  
Jasmine K. Janes
Keyword(s):  
Diversity Index ◽  
Vancouver Island ◽  
Insect Diversity ◽  
Insect Communities ◽  
Orchid Species ◽  
Insect Biodiversity ◽  
Wide Range ◽  
Yellow Traps ◽  
Pan Traps

Abstract The role of insects as pollinators within plant communities is well established, yet our knowledge of insect biodiversity in many habitats is lacking. Given the growing concern that insect biodiversity is declining, it is increasingly important to document insect assemblages from a wide range of geographic locations and habitats. Pan trapping is a common means of sampling local insect diversity. Many studies have found different insects associated with different-coloured pan traps. Here, eight different-coloured pan traps were used to sample local insect diversity in habitats supporting Platanthera (bog and rein) orchids on Vancouver Island, British Columbia, Canada. A total of 16 sites supporting seven orchid species resulted in 435 insects from 53 families being caught over 64.9 hours of pan trapping. Both Shannon and Simpson diversity index values were low despite sampling in markedly different habitats. Yellow traps caught higher numbers of insects, but no statistical difference was found among colours overall. No activity indicating pollination was recorded from a total of 254 insect observations over 21.5 hours. Our results contribute important baseline data on the diversity and behaviour of insect communities in orchid habitats of Vancouver Island and on the use of pan traps to characterise insect communities.

scholarly journals KERAGAMAN ARTHROPODA PADA SACHA INCHI DI LAHAN KERING

2018 ◽  
Vol 32 (2) ◽  
pp. 132
Author(s):  
Khairun Nisa ◽  
Retno Wijayanti ◽  
Endang Setia Muliawati
Keyword(s):  
Natural Enemy ◽  
Perennial Plant ◽  
Pests And Diseases ◽  
Family Diversity ◽  
Plant Pests ◽  
Central Java ◽  
The Family ◽  
Plukenetia Volubilis ◽  
Sacha Inchi

<em>Dryland is one of the most potential ecosystems for cultivated land. Sacha inchi (Plukenetia volubilis L.) is perennial plant originated from Peru and spread to the tropic area like China and Thailand. Arthropods in the plants can be a role as a pest, natural enemy, decomposer, and pollinator. This research purposed to specify diversity of Arthropods and its role in sacha inchi crop. This research has been carried out in June to December 2015 in Mojosongo, Kebak, Jumantono, Karanganyar, Central Java and Laboratory of Plant Pests and Diseases, Faculty of Agriculture, University of Sebelas Maret  Surakarta. The observation was implemented using absolute methods. Data were analyzed by descriptively about the diversity and the abundance of Arthropods on the sacha inchi plants. The result showed that on sacha inchi plant there were 75 families Arthropods consist of 13 orders those are Araneae, Ephemeroptera, Odonata, Orthoptera, Blattaria, Isoptera, Hemiptera, Homoptera, Thysanoptera, Coleoptera, Diptera, Lepidoptera, and Hymenoptera. The role of Arthropods on sacha inchi plant  8% as pest, 10% as the natural enemy (predators and parasitoids), and 82% others (decomposers and pollinators). The family diversity of the Arthropods was a low category (Shannon-Weaver index is 0.692) and Pielou evenness index is 0.164 so Arthropods’ evenness was low</em>

scholarly journals Study on Community Structure of Commercial Sea Cucumber in Intertidal Zone, Southeast Moluccas, and Tual, Moluccas

2020 ◽  
Vol 12 (1) ◽  
pp. 31
Author(s):  
Jasmadi Jasmadi ◽  
Ismiliana Wirawati ◽  
Indyaswan Tegar Suryaningtyas ◽  
Sandi Permadi
Keyword(s):  
Water Quality ◽  
Community Structure ◽  
Intertidal Zone ◽  
Sea Cucumber ◽  
Diversity Index ◽  
Target Area ◽  
Resources Management ◽  
Species Analysis ◽  
Evenness Index

HighlightEight species of sea cucumber was found in four intertidal location in Southeast Moluccas and Tual watersHolothuria atra had the highest densitySea cucumber biodiversity in Southeast Moluccas and Tual waters categorized as lowLocal culture can be used for sustainability of sea cucumber resources management  AbstractA study on the community structure of sea cucumber in Southeast Moluccas and Tual needs to be done due to the important role of sea cucumber in both ecologically and economically sustainability. This study aimed to investigate the community structure of sea cucumber in this region as one of the supporting information for the utilization and management of the resources. A survey was conducted by sweeping the target area, by walking and also snorkeling. The location where each sea cucumber found was marked using a GPS, the specimen was weighed, and some were preserved for species analysis. Water quality was measured at each location, while the substrate and vegetation were recorded. This study revealed different composition of species in the investigated area. As many as 8 species of sea cucumber were found, in which four were of genus Holothuria, three were of genus Stichopus and the rest were of genus Bohadschia. Species H. atra has the highest density. In general, the diversity index was relatively low (< 2), the evenness index was 0-81 indicating that the community was depressed. Certain species dominated at most of the investigated sites (0.50-1), and a low margalef index is 0-1.7. To conclude, the community structure of sea cucumber in Tual and Southeast Moluccas was in a depressed condition.

scholarly journals GROUND INSECT DIVERSITY IN ARBORETRUM OF SUMBER BRANTAS BATU-MALANG AS BASE OF LEARNING RESOURCE MAKING: FLIPCHART

2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Ovy Dwi Rachmasari ◽  
Wahyu Prihanta ◽  
Roro Eko Susetyarini
Keyword(s):  
Natural Resources ◽  
Periplaneta Americana ◽  
Diversity Index ◽  
Pitfall Trap ◽  
Species Level ◽  
Insect Diversity ◽  
Learning Resource ◽  
Decomposition Processes ◽  
Biology Learning ◽  
Scientific Classification

Forests are natural resources in which have high potencial support of biodiversity. One of the existing resources in the forest are ground insects. The presence ground insects are needed to aid in decomposition processes. The purpose of this study was to determine what kind of insects are there in the arboretum Sumber Brantas which its scientific classification can be determined based on their classification until species level. Moreover, to know the diversity value, the abundance, and the sum dominance ratio in three stations.This type of research is descriptive quantitative which employing observation technique in collecting data. Pitfall trap was used to trap ground insects.The results showed that the ground insects found in the study site were: 8 species of 4 orders, diversity index at the Arboretum Sumber Brantas Batu-Malang was moderate of 1.6597, the highest abundance values was at station I of 10.00 for Diplocheila polita, while the greatest percentage of sum dominace value was at station III for Periplaneta Americana of 0.89%. The resuls of the study were used to make flipchart as biology learning resources.

scholarly journals PEMANFAATAN TANAMAN REFUGIA MENGENDALIKAN HAMA PADI (Oryza nivara L) DI SOPORARU TAPANULI UTARA

AGRIFOR ◽  
2021 ◽  
Vol 20 (2) ◽  
pp. 299
Author(s):  
Ameilia Zuliyanti Siregar ◽  
Sampe Lesnida
Keyword(s):  
Plant Disease ◽  
Sampling Method ◽  
Diversity Index ◽  
Red Rice ◽  
Rice Pests ◽  
Evenness Index ◽  
Yellow Traps ◽  
Richness Index ◽  
North Sumatra ◽  
Land Using

The refugia plant is one of the flowers that can be used as a shelter for natural enemies and as a feed sources for insects.  The purpose of this study was to compare the use of refugia and without refugia plants in controlling environmentally friendly red rice pests in Soporaru Hamlet, Sigotom JuluVilalge, Pangaribuan District, North of Tapanuli Regency, North of Sumatra Province. This study uses a purposive sampling method with 3 types of traps, namely: yellow traps, fall traps and net traps. The samples was identified in the Plant Disease Laboratory, Faculty of Agriculture, University of North Sumatra in July 2020  until February 2021.  The results showed that 8 orders of refugia were caught on land using refugia, 23 families, and 1,952 individuals, while on land without refugia there were 8 orders, 22 families and 1,807 individuals.  On land using refugia (r) compared to land without refugia (k) it is known that the Species Richness Index (R) (Rr=2.9 and Rk=2.8), Diversity Index (H) (Hr=2.67 and Hk=  2.19), and Evenness Index (E) (Er=0.85 and Ek=0.71).  Function status identified on land using refugia and without refugia as many as 5 species, namely herbivores, pollinators, predators, parasitoids and scavengers.  

scholarly journals Keanekaragaman laba-laba pada perkebunan kelapa sawit yang berbatasan dengan hutan

2021 ◽  
Vol 18 (2) ◽  
pp. 115-126
Author(s):  
Ulka Sri Asih ◽  
◽  
Yaherwandi Yaherwandi ◽  
Siska Efendi ◽  
◽  
...  
Keyword(s):  
Species Diversity ◽  
Oil Palm ◽  
Diversity Index ◽  
Pitfall Trap ◽  
Forest Edge ◽  
Species Diversity Index ◽  
Spider Species ◽  
Transect Line ◽  
Evenness Index ◽  
West Sumatra

Oil palm plantations bordering forests were thought to affect the biotic components that make up the diversity of ecosystems, especially species with high mobilization and adaptability, such as spiders. This study aims to identify spiders found in oil palm plantations and analyzing diversity and evenness at various distances of oil palm plantations from the forest. Observations of spiders were carried out on oil palm plantations bordered by forests in Nagari Gunung Selasih and Sungai Kambut, Pulau Punjung District, Dharmasraya Regency, West Sumatra Province. In oil palm plantations, a one km long transect line was made from the forest edge. In the sample plots, spiders were observed using a pitfall trap, knockdown, and hand collecting. Data were analyzed using the Shannon-Wiener diversity and evenness index. The highest spider species diversity index was found at a distance of 100–300 m from the forest, respectively 3.06, 3.05, and 3.11. The same is true for the highest evenness index at a distance of 100–300 m from the forest, respectively, namely 0.94, 0.94, and 0.95. In general, the results of this study indicate that the presence of forest bordering the forest is thought to affect spiders in oil palm plantations.

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 Impact of habitat manipulation on the diversity and abundance of beneficial and pest arthropods in sugarcane ratoon

2021 ◽  
Vol 22 (9) ◽  
Author(s):  
Heri Prabowo ◽  
Bambang Tri Rahardjo ◽  
Gatot Mudjiono ◽  
Akhmad Rizali
Keyword(s):  
Diversity Index ◽  
Research Area ◽  
Sugar Production ◽  
Habitat Manipulation ◽  
Pests And Diseases ◽  
Short Run ◽  
Insect Populations ◽  
And Control ◽  
Sugarcane Ratoon

Abstract. Prabowo H, Rahardjo BT, Mudjiono G, Rizali A. 2021. Impact of habitat manipulation on the diversity and abundance of beneficial and pest arthropods in sugarcane ratoon. Biodiversitas 22: 4002-4010. Sugar production in Indonesia faces several challenges such as infestation of pests and diseases that lead to decline in sugarcane production and productivity. In order to overcome the loss of yields from the presence of pests, alternative new approaches are sought by solving of the problem that can have a sustainable impact by applying habitat manipulation. Habitat manipulation changes the diversity and density of arthropods populations in agro-ecosystem. In the concept of managing agroecosystems with habitat manipulation, it is hoped that the development of agro-ecosystem resilience against pest management will be expected to be suistainable. The results showed that there was an increase in the number of arthropods in the research area for 20 weeks after the management of agro-ecosystems through habitat manipulation. The arthropods in all the traps were dominated by Collembola, Diptera, Coleoptera, Aranea, and Hymenoptera. There were 44 genera that belong to predators and 8 species are belonging to parasitoids. The diversity index of Shannon-Wiener (H '), Simpson Dominance (C) and Species Evenness (E) was not significantly different between treatment and control, but habitat manipulation treatment was able to increase the number of detritivores, predators, parasitoids, and pollinators by 38.81; 43.88; 58.4; and 75.35%. The full role of arthropods in the food chain of the sugarcane ecosystem has been identified and efforts are needed to optimize the role of natural enemies in the agroecosystem to maintain ecosystem stability. Habitat manipulation can increase the number of beneficial insect populations in short run, but it might take time to increase their diversity in agroecosystem.

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