scholarly journals Insect Biodiversity in Organic and Non-Organic Rice Ecosystem in The District of Bantul

2016 ◽  
Vol 20 (1) ◽  
pp. 15
Author(s):  
Eka Armi Ovawanda ◽  
Witjaksono Witjaksono ◽  
Y. Andi Trisyono
Keyword(s):  
Species Richness ◽  
Rice Field ◽  
Insect Pest ◽  
Rice Farming ◽  
Species Evenness ◽  
Organic Rice ◽  
Number Of Species ◽  
Insect Biodiversity ◽  
Rice Ecosystem ◽  
Planting Season

Measuring biodiversity of insects is an essential part in management concept of insect pest populations based on ecology. This study examined the index of insect biodiversity by measuring species richness, species evenness and heterogeneity in organic and non-organic rice farming ecosystem. The sampling was conducted during the planting season of April–May 2015 and October–November 2015 at 44, 52 and 66 days after rice transplanting (DAT). High number of species richness (7 to 13 species) was found in the non-organic rice field (April–May 2015). In contrast, high number of species richness (22 to 33 species) was found in the organic rice field (October–November 2015). The species evenness and heterogeneity in the organic farming were generally higher than these in the non-organic rice in the both of planting season April–May 2015 and October–November 2015. Overall, the organic rice farming ecosystem can increase species richness, species evenness and heterogeneity of insect. INTISARI Mengukur biodiversitas serangga adalah salah satu bagian penting dalam konsep pengelolaan populasi serangga hama berbasis ekologi. Penelitian ini mengkaji indeks biodiversitas serangga dengan mengukur kekayaan spesies (species richness), kemerataan spesies (species evenness), dan keanekaragaman/kelimpahan spesies (heterogenity) pada sistem budidaya padi organik dan non-organik. Pengambilan sampel diperoleh pada saat musim tanam April–Mei 2015 dan musim tanam Oktober–November 2015 di 44, 52, dan 66 hari setelah tanam. Total kekayaan spesies tertinggi (7–13 spesies) ditemukan di lahan padi non-organik (April–Mei 2015). Sebaliknya, total kekayaan spesies (22–33 spesies) ditemukan di lahan padi organik (Oktober–November 2015). Kemerataan spesies dan heterogenitas di lahan padi organik secara umum lebih tinggi dibanding di padi non-organik pada kedua musim tanam April–Mei 2015 dan Oktober–November 2015. Secara keseluruhan, sistem budidaya di ekosistem padi organik dapat meningkatkan kekayaan spesies, kemerataan spesies, dan heterogenitas serangga.

scholarly journals Diversity of Hoverfly (Diptera: Syrphidae) Communities in Different Habitat Types in Zanjan Province, Iran

ISRN Zoology ◽  
2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Masumeh Naderloo ◽  
Shahrokh Pashaei Rad
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Rice Field ◽  
Diversity Analysis ◽  
Species Evenness ◽  
Habitat Types

The diversity of hoverfly communities was studied in four different habitat types (river side, woodland, fruit garden, and rice field) in the years of 2008 and 2009. Adult hoverflies were collected from different habitants in Zanjan province. A total of 31 species with 750 individuals of hoverflies were collected, among which Sphaerophoria scripta (Linnaeus), Eristalis arbustorum (Linnaeus) and Eristalis tenax (Linnaeus) were found to be the most abundant. Records from these four sites were used in the diversity analysis. The results indicated that river side and rice field showed the highest and lowest degree of species richness and species diversity. Also, river side and rice field showed the highest and lowest species evenness, respectively.

scholarly journals Avian Diversity of Oak Mixed Forest in Pauri Garhwal, Uttarakhand, India

2021 ◽  
Vol 16 (3) ◽  
Author(s):  
Jarnail Singh ◽  
Sunil Bhandari ◽  
M S Bisht
Keyword(s):  
Species Richness ◽  
Field Survey ◽  
Diversity Index ◽  
Mixed Forest ◽  
Bird Species ◽  
Bird Diversity ◽  
Species Evenness ◽  
Avian Diversity ◽  
Number Of Species

The avian diversity of Oak mixed forest in Pauri Garhwal district of Uttarakhand was studied during October 2019 to March 2020. Two strands of oak mixed forest located at different sites at 29º 22’-29º 75’ North and 78º, 10’ -78º,80’ East (1750 masl) were selected. Regular field survey was carried out during the morning and evening hours at each site. A total of 63 species of birds belonging to 07 orders and 31 families were recorded. The average bird diversity index H ¯was 3.202. The species richness was observed around 7.27 and species evenness was 0.72. The highest number of species was recorded at Ransi Oak mixed forest (63) and lowest number of bird species were recorded in Teka Oak mixed forest (60).

scholarly journals Biodiversity And Arthropod Abundance In Organic Semi Rice In Swamp Lowland in Palangka Raya City

Akta Agrosia ◽  
2021 ◽  
Vol 24 (2) ◽  
pp. 39-44
Author(s):  
Melhanah Manaf ◽  
Rahmawati Budi Mulyani ◽  
Mario Satrio
Keyword(s):  
Diversity Index ◽  
Rice Farming ◽  
Dominance Index ◽  
Organic Rice ◽  
Evenness Index ◽  
Rice Bug ◽  
Arthropod Biodiversity ◽  
Rice Ecosystem ◽  
Arthropod Abundance ◽  
Sweep Net

Palangka Raya has the potential for swamp lowland to be used for rice farming. For this purpose, knowledge of arthropod biodiversity is required. The study aims to determine the biodiversity and abundance of arthropods and arthropods dominant in semi-organic rice plantations in swamp lowlands. The study was conducted from September to November 2019 in Palangka Raya City. The study was carried out on 1.148m2 farmer's paddy fields. The land is divided into three trial plots, each measuring 28x13 m2. Observations were made at the age of 8-15 WAP. Samples were taken using a net trap (Sweep net). Arthropod biodiversity was analyzed using the Shannon-Weaver diversity index (H'). The results showed that in the semi-organic rice ecosystem were obtained 10 orders, 58 families with a total of 8973 individuals, consisting of pests 92.61%, predators 6.59%, parasitoids 0.28%, pollinators 0.06%, Detrivore 0.35%, and 0.07% neutral insects. Diversity index (H') is low to moderate (0.10-2.19), dominance index (C) is in the low to high (0.18-0.97); Evenness index shows that the community is depressed until unstable (0.04-0.67); and The abundance index on the criteria of less to very much (8.96-25.03). The dominant arthropods are dominated by the Rice bug (Leptocorisa acuta).

scholarly journals ANALISIS HARGA AIR PADA AIR PERMUKAAN UNTUK USAHA TANI PADI SAWAH DI SUBAK BENGKEL, KECAMATAN KEDIRI, KABUPATEN TABANAN

2020 ◽  
Vol 8 (1) ◽  
pp. 53
Author(s):  
Pande Made Ari Ananta Paramarta ◽  
Widhianthini - ◽  
AA Wulandira Sawitri Djelantik
Keyword(s):  
Water Resources ◽  
Rice Field ◽  
Water Discharge ◽  
Influential Factor ◽  
Marginal Product ◽  
Rice Farming ◽  
Elasticity Coefficient ◽  
The Future ◽  
Planting Season

Bengkel Subak is the widest subak in Kediri District, Tabanan Regency. Subak Bengkel has a total area of 329 hectares, which is divided into 19 Tempek, which is some kind of grouping. Bengkel Subak is located on two villages, Bengkel Village and Pangkung Tibah Village. The water acquisition is also agreed based on the water debit in each place. This study aims to determine the price of water used by farmers in Subak Bengkel paddy farming, also to know the influence of production and constraints factors experienced in rice farming. The results calculation with the use of value of marginal product (VMP) approach showed that the price of water for irrigated paddy in Subak Bengkel was Rp 413,593.85 / ha / year, around 206,796.92 / ha / planting season or around Rp 206.79 / m3, where the most influential factor is seedlings with an elasticity coefficient of 0.861 affecting production of 8.61 percent. The most common obstacle experienced by Subak Bengkel farmers is the pest in the form of crabs that damage the rice field dike. In the future, Bengkel Subak will include water discharge as an production input in rice farming for appreciation of water resources.

scholarly journals Butterfly diversity in the three selected areas in Dhaka city, Bangladesh

2021 ◽  
Vol 48 (2) ◽  
pp. 413-428
Author(s):  
Md Aminul Islam ◽  
Md Abul Kashem ◽  
Md Abdul Alim ◽  
Fatema Tuz Zohora
Keyword(s):  
Species Richness ◽  
Diversity Index ◽  
Butterfly Species ◽  
Dhaka City ◽  
Species Evenness ◽  
University Campus ◽  
Butterfly Diversity ◽  
Number Of Species ◽  
The Family

The diversity of butterfly species was studied from January to June 2015 in the three selected areas, viz. Ramna Park, Jagannath University Campus, and Baldha Garden in Dhaka city, Bangladesh. A total 75 species of butterfly belonging to 42 genera under 8 families were recorded from the study areas during the study period. Of them, 52 species (6253 individuals) of 8 families were found in the Ramna Park, 37 species (1430 individuals) of 7 families in the Jagannath University Campus and 20 species (320 individuals) of 6 families in the Boldha Garden. In these three study areas, 17 species, 14 genera and 6 families were in common. At the Ramna Park, the highest species richness included the family Lycaenidae (21.15%, 11 spp.) followed by Papilionidae (17.31%, 9 spp.), Pieridae (17.31%, 9 spp.), Nymphalidae (17.31%, 9 spp.), Hesperiidae (13.46%, 7 spp.), Danaidae (7.69%, 4 spp.), Satyridae (3.85%, 2 spp.), and the lowest was in the family Acriidae (1.92%, 1 spp.). At the Jagannath University Campus the highest number of species were recorded in the family Lycaenidae (21.62%, 8 spp.) and Hesperiidae (21.62%, 8 spp.) followed by Pieridae (18.92%, 7 spp.), Papilionidae (13.51%, 5 spp.), Nymphalidae (10.81%, 4 spp.), Danaidae (10.81%, 4 spp.), and the lowest was in Satyridae (2.70%, 1 spp.). The topmost butterfly species were recorded in the family Pieridae (25%, 5 spp.) followed by Lycaenidae (20%, 4 spp.), Nymphalidae (20%, 4 spp.), Papilionidae (15%, 3 spp.), and the lowest from the family Hesperiidae (10%, 2 spp.) and Danaidae (10%, 2 spp.) at the Baldha Garden. The maximum butterfly species were found in February to June (51 spp.), February (34 spp.), and April (16 spp.), and the lowest were in January (46 spp.), June (21 spp.) and January (8 spp.), respectively for the Ramna Park, Jagannath University Campus and the Baldha Garden. The peak of the population observed in May (n =1285), March (n = 325), and May (n = 71), and the lowest was in January (n = 662), June (n = 145) and January (n = 21), respectively for the Ramna Park, Jagannath University Campus, and Baldha Garden. The Shanon’s Diversity Index (H) and Simpson’s Index (λ) indicated high butterfly diversity at the Ramna Park (H = 3.68, λ = 0.03), Jagannath University Campus (H = 3.20, λ = 0.06) and Baldha Garden (H = 2.50, λ = 0.13), respectively. The high Species Evenness in the Ramna Park (E = 0.93), Jaganath University Campus (E = 0.89) and the Baldha Garden (E = 0.84) indicated that the species were evenly distributed. The calculated Sorenson’s Coefficient (CC) was 0.47, which indicates that these three communities have quite a bit of overlap or similarity. Bangladesh J. Zool. 48(2): 413-428, 2020

scholarly journals Insect pest in rice field with legumes embankment applied by Beauveria bassiana vuill

2021 ◽  
Vol 807 (2) ◽  
pp. 022108
Author(s):  
Fitri ◽  
S N Aminah ◽  
T Abdullah ◽  
R Widarawati ◽  
N W Annisa
Keyword(s):  
Beauveria Bassiana ◽  
Rice Field ◽  
Insect Pest

Social sustainability of conventional and organic rice farming in north-eastern Thailand

2021 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Shabbir H. Gheewala ◽  
Pornpimon Boonkum ◽  
Chirawan Phantha ◽  
Jittima Prasara A
Keyword(s):  
Social Sustainability ◽  
Rice Farming ◽  
Organic Rice ◽  
North Eastern

scholarly journals Species richness and diversity in shrub savanna using ordinary kriging

2016 ◽  
Vol 51 (8) ◽  
pp. 958-966 ◽  
Author(s):  
Anderson Pedro Bernardina Batista ◽  
José Márcio de Mello ◽  
Marcel Régis Raimundo ◽  
Henrique Ferraço Scolforo ◽  
Aliny Aparecida dos Reis ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Species Richness ◽  
Spatial Dependence ◽  
Ordinary Kriging ◽  
Diversity Index ◽  
Spatial Models ◽  
Shannon Diversity Index ◽  
Shannon Diversity ◽  
Species Richness And Diversity ◽  
Number Of Species

Abstract: The objective of this work was to analyze the spatial distribution and the behavior of species richness and diversity in a shrub savanna fragment, in 2003 and 2014, using ordinary kriging, in the state of Minas Gerais, Brazil. In both evaluation years, the measurements were performed in a fragment with 236.85 hectares, in which individual trees were measured and identified across 40 plots (1,000 m2). Species richness was determined by the total number of species in each plot, and diversity by the Shannon diversity index. For the variogram study, spatial models were fitted and selected. Then, ordinary kriging was applied and the spatial distribution of the assessed variables was described. A strong spatial dependence was observed between species richness and diversity by the Shannon diversity index (<25% spatial dependence degree). Areas of low and high species diversity and richness were found in the shrub savanna fragment. Spatial distribution behavior shows relative stability regarding the number of species and the Shannon diversity index in the evaluated years.

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