Diversity and Abundance of Insects on Pineapple
(Ananas comosus (L.) Merr.) Plantation at Bolaang
Mongondow District

Bolaang Mongondow District is one of the centers of pineapple production in Indonesia that reside in province North Sulawesi, Indonesia. This research was aimed to know diversity and abundance of insect in pineapple plantation, detect species evenness of insect in to type agroecosystem of pineapple with polyculture and monoculture systems. This research was carried out at pineapple plantation on Lobong village, Bolaang Mongondow District. Insect diversity was observation in pineapple plants will be done by using pith fall traps. The trapping was put in two land research locations that have different system that’s polyculture and monoculture agroecosystem. The sample from trapping was putted into the sample bottle was sorted and identified. The analysis was done to detect diversity of insect with measures index of diversity Shannon and index of evenness Shannon-Wiener. The result showed that biodiversity of insect on pineapple plant that applies cultivation polyculture system more various from in cultivation monoculture system. Total family of insect that found at polyculture land that were 17 families with totals 1614 individuals and monoculture 12 families with totals 1450 individuals. The Shannon and Evenness diversity index in plants with polyculture systems were 0.664 and 0.571 higher than in monoculture systems (0.571 and 0.206). All types of insects that were found both in pineapple plantations were polyculture and monocultures have almost the same level of evenness (E <1).The both of system agriculture for apply system polyculture also monoculture was found family Formicidae in the order Hymenoptera be insect dominate of the area pineapple plantations.

Download Full-text

Preliminary Study of Insect Diversity and Its Economic Importance in Agulu-Nanka Gully Sites

Journal of Applied Life Sciences International ◽

10.9734/jalsi/2021/v24i330224 ◽

2021 ◽

pp. 1-12

Author(s):

Ochiagha Chinemelum Stephanie ◽

Okeke John Joseph ◽

Ibe Emmanuel Chimela

Keyword(s):

Diversity Index ◽

Economic Importance ◽

Insect Species ◽

Insect Diversity ◽

Species Evenness ◽

Beneficial Insects ◽

Agricultural Produce ◽

Standard Procedures ◽

Preliminary Study ◽

Study Sites

The study was designed to investigate the insect diversity and its economic importance in Agulu and Nanka gully sites using standard procedures. A total of 1,609 insects belonging to 15 species were identified from the study sites, which comprised of 1026 individuals belonging to 15 species from Agulu and 583 specimens belonging to 8 species from Nanka. The diversity of the insect species highlighted the dominance, diversity index, species richness and species evenness. Blattodea were the most dominant order in both Agulu site (43.27%), and Nanka site (56.60%). The order Blattodea was the most diverse (0.725) in Nanka site, whereas the order Coleoptera was the most diverse (0.740) in Agulu site. Results from the economic importance revealed 8 insect species as harmful, 3 species as beneficial, while 4 insect species were considered as both beneficial and harmful. Beneficial insects are edible and good agents of pollination while the harmful insects devour agricultural produce and stored food. The result of this study shows that gully erosion site is dominated by insect diversity, probably due to the flora regeneration.

Download Full-text

The abundance and diversity of butterflies (Lepidoptera: Rhopalocera) in Talaud Islands, North Sulawesi, Indonesia

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d201121 ◽

2019 ◽

Vol 20 (11) ◽

Author(s):

Roni Koneri ◽

MEIS J. NANGOY ◽

PARLUHUTAN SIAHAAN

Keyword(s):

Species Richness ◽

Species Diversity ◽

Diversity Index ◽

Species Abundance ◽

Forest Edge ◽

Species Evenness ◽

North Sulawesi ◽

Evenness Index ◽

Abundance And Diversity ◽

Richness Index

Abstract. Koneri R, Nangoy MJ, Siahaan P. 2019. The abundance and diversity of butterflies (Lepidoptera: Rhopalocera) in Talaud Islands, North Sulawesi, Indonesia. Biodiversitas 20: 3275-3283. Butterflies play a number of roles in the ecosystem. They help pollination and natural propagation and also are an important element of the food chain as prey for bats, birds, and other insectivorous animals. This study aimed to analyze the abundance and diversity of butterflies (Lepidoptera: Rhopalocera) in the Talaud Islands of North Sulawesi, Indonesia. The sampling method used was scan sampling along the transect line in three habitat types, namely, forest edge, farmland, and shrubland. The species diversity was determined by using the diversity index (Shanon-Wiener), the species richness index was calculated using the Margalef species richness index (R1), while species evenness was counted by using the Shannon evenness index (E). One-way ANOVA and Duncan test at the 95% significance level were used to determine differences in species richness, species abundance, species diversity values, and species evenness among habitat. In this study, we identified 1008 individuals of butterfly consisted of 32 species and five families. Nymphalidae was the dominant family with 15 species, while the highest abundance species was Eurema tominia. The highest species abundance, species richness index, species diversity index, and species evenness index were found in forest edge habitat. The largest similarity index of the composition of the butterfly communities was found in forest edge and farmland habitats. The abundance and diversity of butterfly species in a habitat are strongly influenced by the diversity of vegetation as shelter and source of nectar for butterflies, and the existence of a river as a source of water and minerals from wet rocks, mud, and sand along the riverside.

Download Full-text

Community Structure of Gastrpods in Mokupa Beach, Sub-district of Tobariri,Minahasa Regency, North Sulawesi Province

JURNAL ILMIAH PLATAX ◽

10.35800/jip.3.1.2015.13215 ◽

2015 ◽

Vol 3 (1) ◽

pp. 22

Author(s):

Alinaung F. Firgonitha ◽

Anneke V. Lohoo ◽

Alex D. Kambey

Keyword(s):

Diversity Index ◽

High Tide ◽

Ocean Basin ◽

Food Chains ◽

Seagrass Bed ◽

Species Diversity Index ◽

Tropical Ecosystem ◽

Filter Feeder ◽

Edge Cover ◽

North Sulawesi

Ecologically intertidal mollusk has important role in the food chains. As a filter feeder, mollusk is also known as a food source for other marine organisms. The intertidal zone is known as the smallest area in the ocean basin (Nybakken, 1992). This zone is a narrow edge cover only few square meters and position between low tide mark (LTM) and high tide mark (HTM). The study was conducted in Mokupa beach waters, Tombariri sub-district, Minahasa Regency. Coastal area of Mokupa village represent typical tropical ecosystem such as coral reef, seagrass bed and mangrove belt. As many as 45 species in 134 total individuals were recorded during the study. The density of gastropods collected is 4.4667 individual/m2 while density for gastropods species Littoraria scabra Linne was 0.4000 individual/m2 and in term of relative density is 9.834 % and thus considered the highest. Species diversity index of this species is H’ = 2.37594. Keywords: mollusk, diversity, dominance A B S T R A K Secara ekologis Moluska yang menempati daerah intertidal memiliki peranan yang besar kaitannya dengan rantai makanan. Karena di samping sebagai filter feeder, moluska juga merupakan makanan bagi biota lainnya. Zona intertidal (pasang-surut) merupakan daerah terkecil dari semua daerah yang terdapat di samudera dunia (Nybakken, 1992). Zona ini merupakan pinggiran yang sempit sekali, hanya beberapa meter luasnya, terletak di antara air pasang tinggi dan air surut rendah. Penelitian ini dilaksanakan di perairan pantai Mokupa Kecamatan Tombariri Kabupaten Minahasa. Daerah pantai Desa Mokupa merupakan daerah yang lokasinya terdapat ekosistem yang khas di daerah tropis yaitu terumbu karang, padang lamun, dan hutan mangrove. Diperoleh sebanyak 45 spesies dan berjumlah 134 individu. Kepadatan rata-rata organisme Gastropoda diperoleh 4,4667 indv/m2 , dengan kepadatan spesies tertinggi 0,4000 indv/m2 (Littoraria scabra Linne), dengan Kepadatan relative adalah 9,834 %.Keanekaragaman spesies diperoleh nilai (H’= 2.37594) Kata Kunci : Komunitas, keanekaragaman, dominasi 1Mahasiswa Program Studi MSP FPIK-UNSRAT 2Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi

Download Full-text

KEANEKARAGAMAN MAKROZOOBENTOS DI SUNGAI TALAWAAN MINAHASA UTARA, SULAWESI UTARA

JURNAL ILMIAH SAINS ◽

10.35799/jis.15.1.2015.8230 ◽

2015 ◽

Vol 15 (1) ◽

pp. 42

Author(s):

Mentari Maith ◽

Sendy Rondonuwu ◽

Adelfia Papu ◽

Marina F.O. Singkoh

Keyword(s):

Random Sampling ◽

Sampling Method ◽

Diversity Index ◽

Continuous Exposure ◽

North Sulawesi ◽

Bottom Waters ◽

Environmental Activities

ABSTRAK Makrozoobentos merupakan hewan makroinvertebrata yang menetap di dasar perairan baik sesil, merayap maupun menggali lubang. Beberapa alasan menjadikan makrozoobentos sebagai bioindikator adalah makrozoobentos relatif diam di dasar perairan sehingga terdedah oleh air, pendedahan yang terus menerus menyebabkan makrozoobentos dipengaruhi oleh kegiatan lingkungan dan perubahan tersebut dapat mempengaruhi keanekaragamannya. Penelitian ini bertujuan untuk menganalisis keanekaragaman makrozoobentos di Sungai Talawaan. Lokasi penelitian terletak di Sungai Talawaan, Minahasa Utara, Sulawesi Utara. Penelitian ini menggunakan metode Purposive Random Sampling dengan menggunakan alat jaring surber. Total individu yang didapatkan dari 3 stasiun sebanyak 191 individu dengan jumlah ordo sebanyak 6 yang terdiri dari 14 genus. Genus makrozoobentos yang paling banyak ditemukan pada ke 3 stasiun yaitu Ephemeroptera, Tricoptera dan Coleoptera. Nilai total ke 3 Stasiun termasuk pada kelompok tercemar ringan dengan Indeks keanekaragaman > 2,0 yaitu 2,01. Kata Kunci: Makrozoobentos, Sungai Talawaan, Indeks Keanekaragaman, Minahasa Utara-Sulawesi Utara. DIVERSITY MACROZOOBENTHOS IN TALAWAAN RIVER NORTH MINAHASA, NORTH SULAWESI ABSTRACT Macrozoobenthos is macroinvertebrate animals that live in the waters of both sessile base, edging and dig a hole. Several reasons make macrozoobenthos bioindicator is macrozoobenthos relatively silent in the bottom waters that were exposed by the water, continuous exposure causes macrozoobenthos influenced by environmental activities and these change may affect biodiversity. This study aims to analyze the diversity of macrozoobenthos in the River Talawaan. Location of the study lies in Talawaan River, North Minahasa, North Sulawesi. The study used Purposive Random Sampling method by using a surber net. Total individuals who come from 3 to as many 191 individual station with the order many as 6 which consists of 14 gems. Genus macrozoobenthos most commonly found at all 3 station are Ephemeroptera, Tricoptera and Coleoptera. The total value of all 3 stations included in the group of lightly contaminated with diversity index > 2,0 is 2,01. Keywords: Macrozoobenthos, River Talawaan, Diversity index, North Minahasa-North Sulawesi.

Download Full-text

Changes in the Microbiome of Cryptosporidium-Infected Mice Correlate to Differences in Susceptibility and Infection Levels

Microorganisms ◽

10.3390/microorganisms8060879 ◽

2020 ◽

Vol 8 (6) ◽

pp. 879 ◽

Cited By ~ 3

Author(s):

Raheela Charania ◽

Brandy E. Wade ◽

Nina N. McNair ◽

Jan R. Mead

Keyword(s):

Diversity Index ◽

Bacterial Flora ◽

Illumina Miseq ◽

Short Chain Fatty Acids ◽

Species Evenness ◽

Gut Permeability ◽

Protozoan Parasites ◽

Gut Flora ◽

Cryptosporidium Spp ◽

Immunological Status

Cryptosporidium spp. are opportunistic protozoan parasites that infect epithelial cells of the small intestine, causing diarrheal illness in humans. Differences in severity may be due to the immunological status of the host, malnutrition or prior exposure but may also be due to differences in the host gut flora. We examined changes in bacterial flora following antibiotic treatment to determine how cryptosporidial infections and gut integrity were affected by alterations in the microbiome. DNA was extracted from fecal and intestinal samples during peak infection. V4 region amplicons were generated and sequenced using 16sRNA on an Illumina MiSeq. Species evenness and richness were estimated using the Shannon diversity index. There was a significant decrease in anaerobes and overgrowth of Enterobacteriaceae in mice treated with cloxacillin. We also examined levels of short-chain fatty acids in fecal samples. There was a significant decrease in acetate, propionate, and butyrate in these same mice. Concurrent with the shift in bacterial infection was a significant increase in severity of cryptosporidial infection and increase in gut permeability. Treatment with other antibiotics significantly altered the microbiome but did not change the infection, suggesting that specific alterations in the host microbiome allow for more favorable growth of the parasite.

Download Full-text

Abundance of Macrozoobenthos in the Seagrass Field Ecosystem in Cemara Besar Island, Karimunjawa Islands

Jurnal Moluska Indonesia ◽

10.54115/jmi.v4i1.18 ◽

2020 ◽

Vol 4 (1) ◽

pp. 1-7

Author(s):

Ria Azizah ◽

Bagus Darmawan ◽

Nur Taufiq SPJ

Keyword(s):

Marine Organism ◽

Diversity Index ◽

Survey Method ◽

Percentage Cover ◽

Ecological Processes ◽

Protection Zone ◽

High Category ◽

Sample Bottle ◽

Evenness Index ◽

Marine Protection

Seagrass has several important ecological functions which protected some species of invertebrates such as crustaceans, bivalves, gastropods, echinoderms, and other marine organism. Seagrass have ecological processes, where any interaction of several biotic and environment components. One of the biotic components associated with seagrass is macrozoobenthos. This study aims to determine the type and abundance of macrozoobenthos, the value of ecological index and covering percentage of seagrass at Cemara Besar Island, Karimunjawa. This study was conducted at Cemara Besar Island, Karimunjawa. The method used in this study was survey method with descriptive data analysis. Measurement of seagrass and macrozoobenthos using transect quadrant size of 1 x 1 meter. Macrozoobenthos living on the surface susbtrat (epifauna) was taken directly, while macrozoobenthos living within the substrate (infauna) using a corer was inserted into the substrate to a depth of 25cm. After conducting the samples were treated, the sediment sample sieved using benthos filter with a pore diameter of 1 mm and put macrozoobenthos into a sample bottle which has been given a 4% formalin solution and dye rose bengal, then identification of macrozoobenthos using a microscope and magnifying glass. Macrozoobenthos samples were analyzed using the calculation of abundance, the diversity index, the evenness index and the domination index. The result show that, in seagrass ecosystems in Cemara Besar Island Karimunjawa was found 4 classes macrozoobenthos consisting of Bivalve 3 species, Polychaeta 5 speseies, Echinoidea 4 species, and Gastropoda 25 species. The value of abundance in marine protection zone ranging from 6.32 to 8.42 ind/dm3 and the value of abundance in utilization zone marine ranging from 6.85 to 7.37 ind/dm3. The value of diversity index in the marine protection zone ranging from 1.42 to 2.57 are included in the category of low to moderate, while in the Marine Utility Zone ranging from 3.26 to 3.47 are included in the high category. The value of evenness index in the marine protection zone (E = 0.61 to 0.74) and utility zone (E = 0.77 to 0.82) were included in the high category (E > 0.6) in the second zone. The value of domination index in the marine protection zone (C = 0.20 - 0.48) and utility zone (C = 0.13 - 0.17) indicates that there are not macrozoobenthos species dominates. The Percentage cover of seagrass in marine protection zone from 68.75 to 76.04%, while the percentage cover of seagrass in utility zone ranging from 59.38 to 65.63%.

Download Full-text

Distribusi Dan Diversitas Serangga Tanah Di Taman Hutan Raya Gunung Tumpa Sulawesi Utara

Jurnal MIPA ◽

10.35799/jm.6.1.2017.16082 ◽

2017 ◽

Vol 6 (1) ◽

pp. 36 ◽

Cited By ~ 2

Author(s):

Mailani Basna ◽

Roni Koneri ◽

Adelfia Papu

Keyword(s):

Secondary Forest ◽

Diversity Index ◽

Chemical Properties ◽

Pitfall Trap ◽

Primary Forest ◽

North Sulawesi ◽

Physical Chemical ◽

Insect Distribution ◽

Soil Insects ◽

Positive Effect

Serangga tanah merupakan jenis dari serangga yang seluruh atau sebagian hidupnya berada di tanah. Serangga tanah berperan penting dalam ekosistem yaitu membantu proses pelapukan bahan organik dan keberadaan serta aktivitasnya berpengaruh positif terhadap sifat kimia fisik tanah. Penelitian ini bertujuan untuk mengkaji distribusi dan diversitas serangga tanah di Gunung Tumpa, Sulawesi Utara. Lokasi pengambilan sampel terdiri dari tiga tipe habitat yaitu, hutan primer, hutan sekunder dan lahan perkebunan. Teknik pengambilan sampel menggunakan perangkap sumuran (Pitfall trap). Hasil penelitian ditemukan serangga tanah sebanyak 10 ordo, 23 famili, 28 genus, 33 morfospesies dan 21100 individu. Ordo Hymenoptera didominasi oleh famili Formicidae. Pola distribusi serangga tanah di Gunung Tumpa berkelompok. Indeks diversitas spesies di Gunung Tumpa tergolong sedang (H = 2,62). Kelimpahan spesies dan indeks diversitas spesies serangga tanah tertinggi ditemukan pada hutan primer, sedangkan yang terendah pada lahan perkebunan dan hutan sekunder.Soil Insects is a type of insect that all or part of his life was on the ground. Soil insects plays an important role in the ecosystem that is helping the process of weathering and the presence of organic matter as well as its activities towards the positive effect of physical chemical properties of the soil. This research aims to identify, examine the distribution and diversity of insects land on Mount Tumpa, North Sulawesi. Location of sampling consists of three types of habitat i.e., primary forest, secondary forest and plantations. The technique of sampling using Pitfall trap. Results of the study found as many as 10 soil insect orders, 23 families, 28 genera, 33 morfospesies and 21100 individuals. The order of Hymenoptera is dominated by the Formicidae. The pattern of soil insect distribution in Gunung Tumpa is clumped. Index of species diversity in Mt. Tumpa belongs to moderate (H = 2.62). The highest abudance and diversity index of soil insect species were found in primary forest, while the lowest was on plantation and secondary forest.

Download Full-text

STRUKTUR DAN KOMPOSISI FITOPLANKTON DI BAGIAN TENGAH DAN HILIR SUNGAI SALUESEM - SULAWESI UTARA

JURNAL ILMIAH SAINS ◽

10.35799/jis.15.2.2015.9227 ◽

2015 ◽

Vol 17 (1) ◽

pp. 111

Author(s):

Jeane O.K Tiwow ◽

Herni E.I Simbala ◽

Sendy Rondonuwu ◽

Ratna Siahaan

Keyword(s):

Water Quality ◽

Random Sampling ◽

Diversity Index ◽

Light Pollution ◽

Phytoplankton Composition ◽

North Sulawesi ◽

Evenness Index

STRUKTUR DAN KOMPOSISI FITOPLANKTON DI BAGIAN TENGAH DAN HILIR SUNGAI SALUESEM - SULAWESI UTARA ABSTRAK Sungai Saluesem berasal dari Gunung Mahawu melintasi Kota Manado sebelum bermuara di Teluk Manado, Sulwesi Utara. Penelitian dilakukan di bagian tengah dan hilir Sungai Salueseum, Sulawesi Utara dari April hingga November 2014. Penelitian ini bertujuan untuk menganalis ke struktur dan komposisi fitoplankton di bagian tengah dan hilir Sungai Saluesem, Sulawesi Utara. Penelitian menggunakan metode purposive random sampling untuk menentukan lokasi penelitian. Dua stasiun penelitian disebarkan di tiap bagian sungai. Sebanyak tiga ulangan dilakukan di tiap stasiun. Total banyaknya sampel yaitu dua belas (2x2x3) sampel yang diperoleh dengan plankton net ukuran 30 mesh. Hasil penelitian menunjukkan bahwa fitoplankton yang didapatkan di bagian tengah Sungai Saluesem sebanyak 399 individu, 28 spesies dan 3 kelas. Fitoplankton yang didapatkan di bagian hilir Sungai Saluesem sebanyak 913 individu, 26 spesies dan 4 kelas. Kelas fitoplankton yaitu Bacillariophyceae, Chlorophyceae dan Cyanophyceae dan Euglenophyceae. Kelas Bacillariophyceae merupakan kelas yang memiliki kepadatan tertinggi di bagian tengah dan hilir berturut-turut yaitu 4067 individu/m3 (81%) dan 14950 individu/m3 (95%). Indeks keanekaragaman di bagian tengah dan hilir termasuk keanekaragaman sedang dengan nilai H’ bagian tengah (H’: 2,88) dan hilir (H’: 2,64). Distribusi species fitolankton di bagian tengah dan hilir merata dengan Indeks Kemerataan (E) berturut-turut yaitu 0,87 dan 0,81. Tidak ada species fitoplankton di bagian tengah yang mendominansi dengan nilai Indeks Dominansi (D) mendekati nol (0,222). Beberapa species fitoplankton di bagian hilir mendominansi dengan nilai Indeks D mendekati satu (0,544). Kualitas air Sungai Saluseum di bagian tengah dan hilir dikategorikan tercemar ringan. Kata kunci : Sungai Saluesem, struktur fitoplankton, komposisi fitoplankton, kualitas air, Sulawesi Utara. STRUCTURE AND COMPOSITION OF PHYTOPLANKTON OF MIDDLE AND DOWNSTREAM SALUESEUM RIVER, NORTH SULAWESI ABSTRACT Saluesem River originated from Mahawu Mount crosses the Manado City before down to Manado Bay, North Sulwesi. The study was conducted in the middle and lower part of Salueseum River, North Sulawesi from April to November 2014. This study aims to analyze the structure and composition of the phytoplankton at the middle and lower part of the River Saluesem, North Sulawesi. Research used purposive random sampling to choose researc locations. Two research stations were distributed in each part of the river. A total of three replications performed at each station. The total number of samples that were twelve (2x2x3) samples by plankton net 30 mesh. The results showed that phytoplankton at the middle as 399 individuals, 28 species and 3 classes. Phytoplankton were at down as 913 individuals, 26 species and 4 classes i.e. Bacillariophyceae, Chlorophyceae and Cyanophyceae and Euglenophyceae. Bacillariophyceae has the highest density at the middle and downstream respectively were 4067 individuals/m3 (81%) and 14950 individuals/m3 (95%). Diversity index (H’) at middle and downstream were classified into middle diversity with index respectively 2.88 and 2.64. Evenness index (E) at middle and down respectively were 0.87 and 0.81 showed that phytoplankton distributed equally. Some species at middle were dominant (D:0.222) but not at downstream (D: 0,544). Water quality of middle and downstream Saluseum River were classified into light pollution. Keyword: Saluesem River, structure phytoplankton, composition phytoplankton, water quality, North Sulawesi.

Download Full-text

Seedling Diversity Considerably Changes Near Localities in Three Salinity Zones of Sundarbans Mangrove Forest, Bangladesh

Journal of Tropical Biodiversity and Biotechnology ◽

10.22146/jtbb.65241 ◽

2021 ◽

Vol 6 (3) ◽

pp. 65241

Author(s):

ASM Helal Siddiqui ◽

Md. Masudur Rahman ◽

Md. Najmus Sayadat Pitol ◽

Md. Akramul Islam ◽

Sk Md. Mehedi Hasan

Keyword(s):

Diversity Index ◽

Species Evenness ◽

Importance Value Index ◽

Importance Value ◽

Species Diversity Index ◽

Excoecaria Agallocha ◽

Salinity Zone ◽

The Status ◽

Sundarbans Mangrove ◽

Family Importance Value

The status of natural seedlings near localities in the Sundarbans Mangrove Forest was assessed through a stratified random sampling method to observe seedling composition and diversity, importance value index, family importance value, and species evenness. A total of 63 sample plots of 3,990 m2 area were surveyed in three natural and anthropogenic influenced salinity zones of Sundarbans. A total of 16,166 seedlings of 15 species under 12 families were found. Family Euphorbiaceae showed the highest (59.59%) family relative density and Rhizophoraceae presented the highest (20%) family relative diversity Index (FRDI). The maximum family importance value (FIV) showed by Euphorbiaceae (66.26) and the maximum importance value index (IVI) of species has been observed in Excoecaria agallocha (114.74). Excoecaria agallocha showed the highest relative density (59.6%) and relative abundance (39.87%) where the highest relative frequency (15.27%) was observed by Heritiera fomes. The mean stem density and species diversity index in the whole survey area was 2701 stem ha-1 and 0.0009 correspondingly. The Shannon-Wienner's diversity index was 1.52 where the maximum Shannon-Wienner's diversity index was 2.708. The Simpson's diversity index and Dominance of Simpson index were 0.38 and 0.62 with Simpson's reciprocal index 2.632. The Species evenness index, Menhinick’s, and Margalef's indices were 0.561, 0.118, and 1.445 respectively. The Species diversity index of the three salinity zones were 0.0017, 0.0029, and 0.0035 respectively. The Shannon-Wienner's diversity index of Low Salinity Zone (LSZ), Moderate Salinity Zone (MSZ), and Strong Salinity Zone (SSZ) were 0.887, 1.369, and 1.845 correspondingly where LSZ (0.632) showed the highest Simpson's diversity index follow ed by MSZ (0.394) and SSZ (0.21). The Species evenness index for LSZ, MSZ, and SSZ were 0.346, 0.505, and 0.742 where Menhinick’s Index were 0.148, 0.210, and 0.207 respectively. The analysis showed poor diversity indices and the area was dominated by few species with few families. The status is also reduced with increasing salinity.

Download Full-text

Keragaman Serangga di Pola Pertanaman Tumpang Sari Kedelai-Titonia

Agrosains: Jurnal Penelitian Agronomi ◽

10.20961/agsjpa.v23i1.47920 ◽

2021 ◽

Vol 23 (1) ◽

pp. 27

Author(s):

Putri Mustika Sari ◽

Adriansyah Yoesoep ◽

Lisdayani Lisdayani

Keyword(s):

Species Diversity ◽

Direct Observation ◽

Crop Production ◽

Diversity Index ◽

Insect Species ◽

Insect Diversity ◽

Wide Range ◽

Index Value ◽

Piezodorus Guildinii ◽

Sweep Net

Plants that have a wide range of insect presence, decreased insect diversity and abundance were so few consequenced because the absence of one insect species can be replaced by the presence of another. The bad consequences that occur are the types of plants that have specific insect specificities because the absence of these insects will cause the failure of plant pollination and will directly cause a decrease in crop production. This study aimed to determine the diversity of insect species that come in the soybean-tithonia intercropping. The method was used direct observation in tithonia-soybean intercropping, took insects using a sweep net in the morning. The results showed that there were 15 types of insects identified, namely Epilachna sp.; Coccinella sexmaculata; Coccinella transveralis; Verania lineata; Ropalidia fasciata; Priocnemis sp.; Naupactus leucoloma; Piezodorus guildinii; Bemicia tabaci; Agromyza phaseoli; Spodoptera sp.; Nezara viridula; Paederus fusipes; Hylaeus sp.; and Trigona sp. The range of results of the calculation of the diversity index showed that the five treatments in intercropping plants had the same abundance. So it was needed to calculate the highest diversity index value or maximum H expressed in Ln S. The maximum H value in this study is 2.708, which is a measure of moderate species diversity (1<H’<3).

Download Full-text