scholarly journals Entomofauna of four spots of Chittagong University campus and their relative abundance and diversity

2018 ◽  
Vol 3 (1) ◽  
pp. 55-64
Author(s):  
M Nasiruddin ◽  
FA Shiuli
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Relative Abundance ◽  
Seasonal Fluctuation ◽  
Forest Area ◽  
Species Evenness ◽  
University Campus ◽  
Hilly Area ◽  
Abundance And Diversity

Relative abundance and diversity of insects were studied in the four spots of Chittagong University Campus, from October 2015 to September 2016. The studied insect orders were- Odonata, Orthoptera, Coleoptera, Hymenoptera and Lepidoptera. Two families under Odonata, four under Orthoptera, five under Coleoptera, three families under Hymenoptera and eight under Lepidoptera were examined from the four study spots. Among these, sixteen species of Odonata, eight species of Orthoptera, Coleoptera and Hymenoptera in each and 32 Lepidoptera species were identified. Highest numbers of insects (276) was collected in April'16 and December'15 whereas lowest numbers of insects (201) were collected in October'15. The highest abundance (906) of insects was found in Spot 3 (Hilly area), medium (785) in Spot 1 (Pond area) and lowest (642) and (648) in Spot 2 (Garden area) and Spot 4 (Artificial forest area), respectively. Lepidoptera (1217) was the most dominant order in the four studied spots followed by Odonata (636), Coleoptera (395), Hymenoptera (381) and Orthoptera (352). The average highest species richness, species diversity and species evenness were observed in October'15 (2.40 ± 0.11), August'16 (2.22 ± 0.03) and August'16 (0.96 ± 0.01), respectively and lowest in April'16 (2.18 ± 0.04), April'16 (1.98 ± 0.07) and April'16 (0.85 ± 0.03), respectively. During the study period, the highest species richness was observed in Spot 2 and Spot 4 (2.32 ± 0.03) and lowest in Spot 3 (2.13 ± 0.02); the highest species diversity was observed in Spot 3 (2.16 ± 0.02) and lowest in Spot 1 and Spot 2 (2.04 ± 0.03); and the highest species evenness was observed in Spot 3 (0.93 ± 0.01) and lowest in Spot 1 and Spot 2 (0.88 ± 0.01). Abundance and diversity of insects were dependent on seasonal fluctuation, and also on ecological and environmental conditions.J. Biodivers. Conserv. Bioresour. Manag. 2017, 3(1): 55-64

scholarly journals Odonate abundance and diversity in four selective spots of Chittagong University campus

2018 ◽  
Vol 4 (1) ◽  
pp. 55-62
Author(s):  
M Nasiruddin ◽  
A Barua
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Seasonal Fluctuation ◽  
Species Evenness ◽  
University Campus ◽  
Ecological Conditions ◽  
The Family ◽  
Abundance And Diversity

The abundance and diversity of odonate fauna were studied in four selective spots of Chittagong University Campus, Chittagong, Bangladesh from August’2016 to July’2017. A total of 928 individuals of odonates under three families was collected during the study period from the four sampling sites. Out of 25 species identified one belonged to the family Gomphidae, 13 belonged to family Libellulidae and 11 belonged to family Coenagriidae. The abundance of odonate species was highest in July’17 (13.04%) and was lowest in December’16 (4.96%). Spot 2 was a hotspot for odonates as highest number (370) was collected from this spot. A total of 196, 188 and 174 individuals were collected from Spot 4, Spot 3 and Spot 1, respectively. The members of Libellulidae (472) were dominant followed by Coenagriidae (406) and lastly Gomphidae (50). Highest species richness (SR), species diversity (H′) and species evenness (J′) values were observed in the months of May’17 (1.56±0.08), May’17 (1.29±0.08) and December’16 (0.96±0.03), respectively. But lowest such values were observed in December’16 (0.96±0.05), November’16 (0.90±0.02) and May’17 (0.81±0.05), respectively. Amongst the spots, highest SR, H′ and J′, values were observed in Spot 4 (1.40±0.10), Spot 2 (1.22±0.05) and Spot 1 (0.93±0.02), respectively, whereas, lowest such values were observed in Spot 1 (1.02±0.08), Spot 1 (1.01±0.04) and Spot 4 (0.82±0.02), respectively. Ecological conditions and seasonal fluctuation had great impact on the abundance and diversity of odonates.J. Biodivers. Conserv. Bioresour. Manag. 2018, 4(1): 55-62

scholarly journals Abundance and diversity of aquatic insects in two water bodies of Chittagong university campus

2015 ◽  
Vol 42 (1) ◽  
pp. 19-33
Author(s):  
Munira Nasiruddin ◽  
Mohammad Ali Azadi ◽  
Md Selim Reza
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Aquatic Insects ◽  
Water Bodies ◽  
Species Evenness ◽  
University Campus ◽  
Abundance And Diversity

Abundance and diversity of aquatic insects was studied in two water bodies, (a pond and a lake) of Chittagong University campus during October 2009 to September 2010. A total of 4406 insects belonging to 32 genera, under 20 families and 6 orders were recorded. In both the water bodies, the representatives of the orders Hemiptera and Odonata were the most abundant groups. During the study period highest abundance of the total insects was recorded in November 2009 and the lowest in July 2010. Abundance of insects was comparatively higher in the pond habitat than in the lake. The Quotient of Similarity (QS) of the insects between the two water bodies was found to be the highest in October 2009 and lowest in July 2010. Species diversity, species richness and species evenness values of the lake were higher than that of the pond. Hydrophilus sp. and Sphaerodema sp. were the most dominant insects in the pond, while Chironomous sp. and Gerris sp. in the lake.Bangladesh J. Zool. 42(1): 19-33, 2014

scholarly journals STRUKTUR KOMUNITAS IKAN TARGET DI TERUMBU KARANG PULAU HOGOW DAN PUTUS-PUTUS SULAWESI UTARA

2011 ◽  
Vol 7 (2) ◽  
pp. 60 ◽  
Author(s):  
Unstain NWJ Rembet ◽  
Mennofatria Boer ◽  
Dietriech G Bengen ◽  
Achmad Fahrudin
Keyword(s):  
Multivariate Analysis ◽  
Species Richness ◽  
Coral Reef ◽  
Species Diversity ◽  
Species Abundance ◽  
Controlling Factors ◽  
Ecological Groups ◽  
Species Evenness ◽  
Target Fish ◽  
Abundance And Diversity

ABSTRACTCommunity structure of target fishes was analyzed to understand their response to different conditions of coral reefs in several places of Hugow and Putus-Putus islands. This study focused on species abundance and diversity including Shannon-Wiener’s species diversity (H’), species richness (SR), species evenness (J’) and dominance (d) indices, respectively. A multivariate analysis was used for the classification or correspondence factorial analyses. The result recorded 4,501 individuals belonging to 52 species of target fishes. Both cluster and correspondence analyses clearly recognized 3 groups of target fish with 2 major controlling factors for the development of these 3 ecological groups, i.e. coral reef conditions and geographic position to the hydrodynamic condition.ABSTRAKStruktur komunitas ikan target dianalisis untuk melihat respon ikan target terhadap perbedaan kondisi terumbu karang di beberapa lokasi Pulau Hogow dan Putus-Putus. Penelitian ini dilakukan pada bulan Oktober 2010 dengan pengambilan data di 6 stasiun. Dalam penelitian ini telah dikaji variabel komunitas seperti kelimpahan dan keanekaragaman spesies termasuk indeks keanekaragaman spesies Shannon-Wiener (H’), indeks kekayaan spesies (SR), indeks kemerataan spesies (J’) dan indeks dominasi (d). Untuk melihat assemblage ikan target dilakukan analisis multivariat baik analisis klasifikasi maupun analisis faktorial koresponden. Dalam penelitian ini diperoleh 4501 indidu yang termasuk dalam 52 spesies ikan target. Analisis multivariat baik analisis cluster maupun analisis koresponden telah memisahkan dengan jelas 3 grup ikan target, dimana terdapat dua faktor utama pengendali pembentukan 3 grup ekologis ini yakni faktor kondisi terumbu karang dan faktor posisi lokasi terhadap kondisi hidrodinamika perairan.

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

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.

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.

A faunistic study on Carabidae and Scarabaeidae in alfalfa fields from Central Greece

Biologia ◽  
2016 ◽  
Vol 71 (11) ◽  
Author(s):  
Evangelos G. Badieritakis ◽  
Argyro A. Fantinou ◽  
Nikolaos G. Emmanouel
Keyword(s):  
Species Richness ◽  
Relative Abundance ◽  
Seasonal Fluctuation ◽  
Growing Season ◽  
Agricultural Management ◽  
Density Peak ◽  
Number Of Species ◽  
The Family ◽  
Activity Density ◽  
Surface Active

AbstractThis paper presents a study of the composition of Carabidae and Scarabaeidae among other surface-active Coleoptera along with their seasonal fluctuation, species richness and relative abundance in three alfalfa hay fields from Kopais Valley (Greece) over a period of systematic samplings (June 2008 to May 2010). Field A was cut monthly (about 4 times per year) and field B bimonthly (3 times), although no field was sprayed. Field C was cut monthly and sprayed with the insecticide bifenthrin three times during the growing season. In total, 48 species of soil Coleoptera belonging to 11 families (particularly Carabidae and Scarabaeidae) were recorded. The family Carabidae was dominated by autumn breeders, with a spring and autumn activity-density peak. Agricultural management did not cause differences in the estimated number of species.

scholarly journals Avifaunal diversity in Assam University Campus, Silchar, India

2016 ◽  
Vol 8 (1) ◽  
pp. 8369 ◽  
Author(s):  
Biswajit Chakdar ◽  
Parthankar Choudhury ◽  
Hilloljyoti Singha
Keyword(s):  
Species Richness ◽  
Secondary Growth ◽  
Bird Species ◽  
Forest Area ◽  
University Campus ◽  
Growth Area ◽  
Bird Survey ◽  
Degraded Area ◽  
Bird Habitat ◽  
The University

<p>We conducted a bird survey in the Assam University campus, Silchar from February 2011 to June 2011.  A total of 73 species of birds belonging to 56 genera, 32 families and 13 orders was recorded. Significantly, the highest number of bird species restricted to only one particular habitat (17 species) was recorded in the forest area called ‘eco-forest’ (χ<sup>2</sup>=18, df=3, P&lt;0.01).  The highest similarity of bird species was found between degraded area and secondary growth area, and the lowest was found between eco-forest and degraded area.  Species richness and dominance of species were more in the eco-forest area.  The diversity of species was more in the secondary growth area. Red-vented Bulbul, Spotted Dove and Red-whiskered Bulbul were the most abundant and frequent bird species found in campus.  The avifaunal diversity in the study area shows the importance of the University campus as an ideal bird habitat. </p>

ABUNDANCE AND DIVERSITY OF ADULT CARABIDAE IN FOUR SOYBEAN CROPPING SYSTEMS IN VIRGINIA

1985 ◽  
Vol 20 (2) ◽  
pp. 163-171 ◽  
Author(s):  
H. J. Ferguson ◽  
R. M. McPherson
Keyword(s):  
Species Diversity ◽  
Conservation Tillage ◽  
Cropping Systems ◽  
Pitfall Trap ◽  
Species Number ◽  
Species Evenness ◽  
Tillage Systems ◽  
Abundance And Diversity ◽  
Trap Catches ◽  
Dominance Indices

Carabidae (Coleoptera) were monitored from pitfall trap catches in four soybean cropping systems in Westmoreland Co., Virginia during the summer of 1982. Harpalus pensylvanicus DeGeer, Poecilus chalcites Say, Amara spp., and Agonum octopunctatum Fabricius were the most commonly encountered among the 39 species collected. These four species were more abundant in drill-planted and double-cropped soybean fields which were conservation tillage systems as compared to conventionally plowed fields. Significantly more species per field and more carabids per trap were found during June than in later summer months. The Shannon-Weaver diversity and Berger-Parker dominance indices showed no significant differences in species diversity among the cropping systems. The total number of carabids present in soybeans is more important in comparisons than either species number of species evenness.

scholarly journals Keanekaragaman Serangga Air di Sungai Pajowa Kabupaten Minahasa, Sulawesi Utara

Jurnal MIPA ◽  
2013 ◽  
Vol 2 (2) ◽  
pp. 73 ◽  
Author(s):  
Gladyes V. Leba ◽  
Roni Koneri ◽  
Adelfia Papu
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Food Chain ◽  
Aquatic Insects ◽  
Life Cycles ◽  
Species Evenness ◽  
North Sulawesi ◽  
Surber Sampler

Serangga air merupakan kelompok Arthropoda yang sebagian siklushidupnya berada di perairan. Serangga ini berperan penting dalam rantaimakanan pada suatu ekosistem perairan. Penelitian ini bertujuan untukmenganalisis kelimpahan, kekayaan, keanekaragaman dan kemerataaanspesies serangga air di Sungai Pajowa, Kabupaten Minahasa, SulawesiUtara. Pengambilan sampel menggunakan surber sampler dan handcollection. Jumlah serangga air yang ditemukan sebanyak 22 spesies, 14famili dan 5 ordo. Spesies yang paling banyak ditemukan adalah Gerrisremigis, sedangkan ordo yang memiliki spesies paling banyak adalahEphemeroptera. Kelimpahan dan kekayaan spesies serangga air tertinggiterdapat pada bagian tengah aliran sungai, sedangkan keanekaragamandan kemerataan spesies tertinggi di bagian hulu sungai. Kelimpahan,kekayaaan dan keanekaragaman spesies serangga air berbeda nyataantar stasiun pengamatan, sedangkan kemerataan spesies tidakmenunjukkan perbedaan yang nyata.Arthropods are a group of aquatic insects whose life cycles are partlyin the water. These insects play an important role in the food chain in anaquatic ecosystem. This research is aimed to analyze the abundance,richness, diversity and evenness of species of insects in the river waterPajowa, Minahasa regency, North Sulawesi. Surber sampler and handcollection are used in Sampling. Number of aquatic insects found as manyas 22 species, 14 families and 5 orders. The most commonly foundspecies is Gerris remigis, while orders that have the most species areEphemeroptera. Abundance and species richness of aquatic insects ishighest in the middle of the river, while the highest species diversity andevenness in the upper reaches of the river. Abundance, species richnessand diversity of aquatic insects were significantly different between thestations of observation, whereas species evenness did not showsignificant differences.

scholarly journals Species Diversity, Distribution and Abundance of Fishes of Seti Gandaki River Basin, Pokhara, Nepal

2020 ◽  
pp. 5-14
Author(s):  
Kishor K. Pokharel ◽  
Khadga B. Basnet ◽  
Trilok C. Majpuria ◽  
Chitra B. Baniya
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
River Basin ◽  
Environmental Variables ◽  
Diversity Indices ◽  
Urban Site ◽  
Abundance And Diversity ◽  
Study Sites ◽  
Urban Sites ◽  
Tor Tor

Species diversity with indices, distribution and abundance of fishes of Seti Gandaki River Basin, Pokhara, Nepal are described from five study sites, three along the main channel and two in major tributaries. Fishes were sampled using a cast-net following pass-removal method. Environmental variables were determined following the standard methods. In total, 30 species belonging to five orders, nine families and 24 genera with absolute abundance of 10,659 were recorded. A longitudinal pattern of distribution and species richness from upstream to downstream sites (17 to 21 species) was observed. Cyprinids were dominant followed by silurids, balitorids, channids, mastacembelids, belonids and cobitids. Distribution pattern and abundance data showed that the species Tor tor, Tor putitora, Chaguninus chagunio, Barilius barila, Opsarius barna, Danio rerio, Lepidocephalichthys guntea, Parachiloglanis hodgarti and Amblyceps mangois were not common in the study area. The environmental variables such as depth, width, discharge and temperature showed effect upon species richness, abundance, distribution and diversity indices, which had lower values at upstream pre-urban sites than at downstream post-urban sites. A sharp decline in species richness, abundance and diversity indices at urban site (10 species) indicated urban influence.

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