scholarly journals DIVERSITY OF ARTHROPOD PREDATOR IN SWAMP RICE FIELDS IN SOUTH SUMATERA

2019 ◽  
Vol 18 (2) ◽  
pp. 112
Author(s):  
Dewi Meidalima ◽  
Ruarita Ramadhalina Kawaty ◽  
Erlan B. Gunawan
Keyword(s):  
Pitfall Trap ◽  
Rice Fields ◽  
Pesticide Contamination ◽  
Pesticide Application ◽  
Level Number ◽  
Synthetic Pesticide ◽  
Arthropod Predator ◽  
Abundance And Diversity ◽  
The Village ◽  
Predatory Arthropods

The abundance and diversity of arthropod in agro ecosystem depend on the level of synthetic pesticide contamination.  This study aimed to explore, identify and analyze the diversity and abundance of predatory arthropods in swamp rice fields treated with pesticide application (in Pemulutan) and without pesticide application (in Musi 2). The swamp rice fields in Pemulutan are bordered by village, river and forest. The methods were survey and direct observation on 3 ha and 2 ha of swamp rice fields in Pemulutan and Musi 2, Palembang. Sampling of predatory arthropods were conducted at 20, 50, 80 and 110 days after rice planting using pitfall trap.  Identification of  predatory arthropods  was conducted at Laboratory of Entomology showing that the arthropod collected consisted of 17 species of insects and 9 species of Arachnida. In Pemulutan Ogan Ilir were found 19 species (10 species of insect and 9 species of Arachnida) at the village area. In the area that was bordered by river were found 8 species (7 insect and 1 Arachnida). In the area bordered by forest were found 22 species (10 species of insects and 12 species of Arachnida). The diversity level, number of species, and arthropod specimen in the field without pesticide application at Musi 2 were higher than those in the fields with pesticide application in Pemulutan.

scholarly journals The Diversity of Arthropods Predator on Wild Plant of Rice Field with and without Pesticides

2017 ◽  
Vol 9 (1) ◽  
pp. 89
Author(s):  
Dewi Meidalima ◽  
Ruarita Ramadhalina Kawaty ◽  
Erlan B. Gunawan
Keyword(s):  
Rice Field ◽  
Wild Plants ◽  
Wild Plant ◽  
Pesticide Application ◽  
Arthropod Predators ◽  
Arthropod Predator ◽  
High Dominance ◽  
Plant Families ◽  
Abundance And Diversity ◽  
Index Of Diversity

<p>Contaminated- agro ecosystem influences abundance and diversity of arthropods. The aims of this study  were to analyze the diversity and abundance of pre-planting  arthropod predators  on wild plants in rice field with and without  application of pesticides. The survey and direct observation of wild plants at the rice filed were conducted from January to March 2015, at 1 ha in Pemulutan and  1 ha in Musi 2 Palembang. Sampling of arthropod predator was conducted 8 times before the rice was grown, using insect nets. On the land without pesticide application was found 14  arthropod families which consists of 28 species and 15 families of wild plant consists of 25 species.  On the land with pesticide application  was found  8 arthropod families consists of 16 species and 15 wild plant families with 23 species. On the land without pesticide application was found High index of diversity (H’=3.121)  and low dominance (D=0.095), while on the land with pesticide application low index of diversity (H’=2.602) and high dominance (D=0.171). It is the indicators of arthropods predator more varieties at the land without pesticide application compare to the land with pesticide application. This finding is very important for biological pest management in South Sumatra. </p>

scholarly journals Abundance and species diversity of predatory arthropods inhabiting rice of refuge habitats and synthetic insecticide application in freshwater swamps in South Sumatra, Indonesia

2019 ◽  
Vol 20 (8) ◽  
Author(s):  
TILI KARENINA ◽  
Siti Herlinda ◽  
CHANDRA IRSAN ◽  
YULIA PUJIASTUTI
Keyword(s):  
Species Diversity ◽  
Rice Field ◽  
Insecticide Application ◽  
Synthetic Insecticide ◽  
Cultivation Technique ◽  
Synthetic Pesticide ◽  
Predatory Insects ◽  
Spider Abundance ◽  
Abundance And Diversity ◽  
Predatory Arthropods

Abstract. Karenina T, Herlinda S, Irsan C, Pujiastuti Y. 2019. Abundance and species diversity of predatory arthropods inhabiting rice of refuge habitats and synthetic insecticide application in freshwater swamps in South Sumatra, Indonesia. Biodiversitas 20: 2375-2387. Rice cultivation in freshwater swamps in Indonesia is specific, among other things, there is no synthetic pesticide spraying and vegetable growing on rice field embankments. This specific cultivation technique can affect the abundance and diversity of rice-dwelling arthropods species. The study aimed to compare the abundance and species diversity of predatory arthropods inhabiting rice surrounded both by refugia and vegetables and by those being applied with synthetic insecticide in the rice field of freshwater swamps. This study used rice plots surrounded by refugia flower (Zinnia sp., Tagetes erecta, Cosmo caudatus, and Sesamum indicum); vegetables (Cucumis sativus, Vigna sinensis, Luffa acutangula, and Momordica charantia); untreated; and synthetic insecticide. Twenty-five herbivore species of 12 families, 34 spider species of 8 families, and 24 species of predatory insects of 12 families were found on rice during a planting season. The lowest herbivore population and spider abundance were found on synthetic insecticide sprayed rice and they were significantly different from those of refugia-rice plots. The most abundant spiders and predatory insects were found on rice surrounded by refugia and were not significantly different from those of rice surrounded by vegetables. The highest species diversity for spiders and predatory insects was found on rice surrounded by refugia, whereas the lowest species diversity was found on synthetic pesticide sprayed rice. Therefore, rice surrounded by refugia flowers and vegetables was the most appropriate for habitat and niche of predatory arthropods.

scholarly journals Community structure of arboreal and soil-dwelling arthropods in three different rice planting indexes in freshwater swamps of South Sumatra, Indonesia

2020 ◽  
Vol 21 (10) ◽  
Author(s):  
Tili Karenina ◽  
Siti Herlinda ◽  
Chandra Irsan ◽  
Yulia Pujiastuti ◽  
Hasbi Hasbi ◽  
...  
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Rice Fields ◽  
Herbivorous Insects ◽  
Arthropod Community ◽  
Pitfall Traps ◽  
Sogatella Furcifera ◽  
Pardosa Pseudoannulata ◽  
Arthropod Species ◽  
Predatory Arthropods

Abstract. Karenina T, Herlinda S,  Irsan C, Pujiastuti Y, Hasbi, Suparman, Lakitan B, Hamidson H, Umayah A. 2020. Community structure of arboreal and soil-dwelling arthropods in three different rice planting indexes in freshwater swamps of South Sumatra, Indonesia. Biodiversitas 21: 4839-4849.  Differences in the index of rice planting can cause differences in the structure of the arthropod community. This study aimed to characterize the community structure of the arboreal and soil-dwelling arthropods in the three different rice planting indexes (PI) in the freshwater swamps of South Sumatra.  Sampling of the arthropods using D-vac and pitfall traps was conducted in the three different rice planting, namely one (PI-100), two (PI-200), and three (PI-300) planting indexes of the rice. The results of the study showed that the dominant predatory arthropod species in the rice fields were Pardosa pseudoannulata, Tetragnatha javana, Tetragnatha virescens, Pheropsophus occipitalis, Paederus fuscipes, and the dominant herbivorous insects were Leptocorisa acuta, Nilavarpata lugens, and Sogatella furcifera. The abundance of arboreal predatory arthropods was the highest in the PI-300 rice and the lowest in the PI-100 rice.    The abundance of soil-dwelling arthropods was the highest in the rice PI-100, and low in the rice PI-200 and PI-300, but the rice PI-100 had the highest abundance of the herbivorous insects. The rice PI-300 was the most ideal habitats to maintain the abundance and the species diversity of the arboreal predatory arthropods. Thus, the rice cultivation throughout the year was profitable in conserving and maintaining the abundance and species diversity of the predatory arthropods.

scholarly journals The The diversity and abundance of Hymenoptera insects on tidal swamp rice field in Indragiri Hilir District, Indonesia

2020 ◽  
Vol 21 (3) ◽  
Author(s):  
ZAHLUL IKHSAN ◽  
HIDRAYANI ◽  
YAHERWANDI ◽  
HASMIANDY HAMID
Keyword(s):  
Species Diversity ◽  
Rice Field ◽  
Diversity Index ◽  
Human Life ◽  
Similarity Index ◽  
Pitfall Trap ◽  
Vital Role ◽  
Tidal Swamp ◽  
Abundance And Diversity ◽  
Number Of Individuals

Abstract. Ikhsan Z, Hidrayani, Yaherwandi, Hamid H. 2020. The diversity and abundance of Hymenoptera insects on tidal swamp rice field in Indragiri Hilir District, Indonesia. Biodiversitas 21: 1020-1026. Hymenoptera is one of the four largest insect orders and it plays a vital role in human life as pollinators, parasitoids, and predators. Hymenoptera parasitoids are particularly important as agents of biological control of pest. The objective of this research was to study the diversity and abundance of Hymenoptera on tidal swamp rice field in Indragiri Hilir District, Riau Province, Indonesia. Samplings were conducted in 3 sub-districts of rice production centers, namely Batang Tuaka, Keritang and Reteh, using four trapping techniques (i.e. insect net, malaise trap, pitfall trap, and yellow pan trap). Shannon diversity index (H '), Krebs evenness index (E), and Jaccard similarity index (Is) were calculated. We found 4,701 individuals consisting of 39 families and 319 species of Hymenoptera at the three studied areas. Tidal swamp rice in Indragiri Hilir District had a high species diversity of Hymenoptera parasitoids and Hymenoptera predators, but a moderate species diversity of Hymenoptera pollinators. Species diversity and evenness of Hymenoptera parasitoids and predators were higher in Keritang than in Batang Tuaka and Reteh. The families of Formicidae, Braconidae, Ichneumonidae, and Scelionidae had the highest number of species, while Formicidae, Scelionidae, Diapriidae, and Braconidae had the highest number of individuals. Based on these findings, the abundance and diversity of Hymenoptera insects in Indragiri Hilir District have the potentials to be developed as biological agents to control pests on tidal swamp rice in this area.

Responses of macroinvertebrate communities to pesticide application in irrigated rice fields

2018 ◽  
Vol 190 (2) ◽  
Author(s):  
Cristina Stenert ◽  
Íris C. M. F. de Mello ◽  
Mateus M. Pires ◽  
Débora S. Knauth ◽  
Naoki Katayama ◽  
...  
Keyword(s):  
Rice Fields ◽  
Macroinvertebrate Communities ◽  
Pesticide Application ◽  
Irrigated Rice

A mass-accumulation of vertebrates from the Lower Cretaceous of Nehden (Sauerland), West Germany

1987 ◽  
Vol 230 (1259) ◽  
pp. 215-255 ◽  
Keyword(s):  
Body Length ◽  
Lower Cretaceous ◽  
Flash Flood ◽  
West Germany ◽  
New Information ◽  
Numerical Abundance ◽  
Rare Fish ◽  
Abundance And Diversity ◽  
Vertebrate Assemblage ◽  
The Village

A ‘fauna’ of vertebrates recovered from a cavern-like deposit at a quarry near the village of Nehden in Sauerland is described and reviewed in some detail. Anatomical descriptions of some skeletal elements are given, where they provide new information or supplement previous descriptions.The clays in which the fossils were buried have been dated comparatively as Aptian (late Lower Cretaceous) and approximately contemporary with the Weald Clay unit of the Wealden Formation of southeast England and the Bernissartian of southwest Belgium. Both these latter formations have yielded faunal and floral assemblages that are very similar to those found at Nehden. The vertebrates collected at Nehden include adult and numerous juvenile remains of two species of the ornithischian dinosaur Iguanodon : I. atherfieldensis and I. bernissartensis . ( I. atherfieldensis is the more abundantly represented.) These can be contrasted with the massaccumulation of Iguanodon recovered from Bernissart, where these dinosaurs are represented by predominantly adult skeletons. There is circumstantial evidence from a documented association of bones (revealed by examination of excavation plans) to support a reconstruction of a juvenile Iguanodon bernissartensis with a body length ca. 2-3 m (fully grown individuals reach a body length of ca. 11 m); this is the smallest individual of this species recovered to date. The remainder of the vertebrate assemblage consists of very fragmentary remains of crocodilians, chelonians and extremely rare fish. The presence of both a hypsilophodontid ornithischian dinosaur and a theropod saurischian dinosaur must be viewed as extremely conjectural, based as they are on two very poor specimens. Remains referred to as Vectisaurus sp. in previous accounts of this site are juvenile individuals of Iguanodon . The circumstances surrounding three mass-accumulations of fossils, Trossingen, Bernissart and Nehden, are reviewed, and evidence of mass deaths among recent vertebrates is considered. Archive records at Trossingen suggest that periodic events, such as mud-slides, may have been partly responsible for the concentration of remains. Similar events may also have been responsible for the assemblages at Bernissart and Nehden; the assemblage at Nehden may represent an accumulation caused by a flash flood or by a herd crossing a river. It is suggested that awareness of such common phenomena should be emphasized when data such as these are used in estimations of numerical abundance and diversity of species in the fossil record; localized high abundances of species, caused by phenomena of this type, may exert a strong bias on the patterns of abundance or diversity of species, generated by palaeobiologists, by creating patterns that are in effect flash-flood artefacts rather than natural censuses of fossil faunas.

scholarly journals Analisis Praktik Akad Muzara’ah Di Desa Lebak Kecamatan Sangkapura Bawean Gresik Perspektif Hukum Islam

2019 ◽  
Vol 1 (1) ◽  
pp. 30-40
Author(s):  
Ainun Barakah ◽  
Pipin Suitra
Keyword(s):  
Research Method ◽  
Islamic Law ◽  
Agricultural Practices ◽  
Rice Fields ◽  
The Other ◽  
Irrigate Rice ◽  
Library Research ◽  
The People ◽  
The Village ◽  
Lease Agreement

Abstract Bawean is an archipelago administratively included in Gresik Regency, where the main occupation of the people is farming and fishing, but not all of the people have land to farm and ships to go to sea, and not a few who work in Malaysia and Singapore have even become citizens of that country. so that the land and rice fields below are unproductive, so there is cooperation between landowners and tenants or cultivators, in agricultural practices, landowners and processors or workers often make contracts and agreements in such cooperation, as well as in the village of Lebak, the agreement sees to the weather, or irrigation used to irrigate rice fields, and the yields obtained during the rainy season in certain months are different, there are at least three cooperation systems in the muzara'ah contract implemented there, in this study the three systems were analyzed to determine which in accordance with Islamic law , of the three, there are two agreements that use the muzara’ah contract, and the other one uses the ijarah agreement or lease agreement. This research uses the library research method with a qualitative inductive approach. Keywords: muzara’ah, Islamic Law, Gresik

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