scholarly journals BIRDS DISTRIBUTION IN PT EKOSISTEM KHATULISTIWA LESTARI, KUBU RAYA REGENCY, WEST KALIMANTAN PROVINCE

2020 ◽  
Vol 25 (3) ◽  
pp. 175-184
Author(s):  
Iqbal Nur Ardiansyah ◽  
Nirmala Ayu Aryanti ◽  
Hari Ahmadi
Keyword(s):  
Diversity Index ◽  
Bird Species ◽  
The Other ◽  
Species Evenness ◽  
Illegal Logging ◽  
Habitat Types ◽  
West Kalimantan ◽  
Wildlife Species ◽  
Species Similarity ◽  
Bird Distribution

IUPHHK-RE PT Ekosistem Khatulistiwa Lestari is the habitat of various wildlife species, comprises of a restoration forest area surrounded by production forest and oil palm plantations. The threats of damages from illegal logging and land clearing activities tend to threaten the wildlife existence. Therefore, this study aims to determine the distribution and diversity of bird species in PT Ekosistem Khatulistiwa Lestari. The study was conducted from  January - February 2019, and  data collection was conducted using the IPA (Index Ponctualle deAbondance) method. Furthermore, data analysis used diversity index, evenness index, and species similarity with dendrogram analysis using SPSS 21. The results showed that the highest bird species were found in mangroves (32 species), old swamp scrubs (26 species), young swamp scrubs (24 species), plantations (13 species), and settlement (15 species) habitats. Meanwhile, the diversity index of bird species in the five habitat types is classified as medium diversity. Species evenness with the highest value is settlement (E = 0.93). The dendrogram image of the settlement area showed bird species, which can be found in the other four habitats.   Keywords: diversity, bird distribution, West Borneo, dendrogram

scholarly journals Bird Species Abundance and Diversity in Montane Forest Research Station, Jos, Plateau State

2021 ◽  
pp. 4014-4027
Author(s):  
Kambai Collina ◽  
Akwashiki Ombugadu ◽  
Apervega Paul Tersoo ◽  
Nanlir Janfa ◽  
Francis Mundi Junior ◽  
...  
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Riparian Forest ◽  
Bird Species ◽  
Montane Forest ◽  
Residential Area ◽  
Research Station ◽  
Forest Research ◽  
Habitat Types ◽  
Plateau State

Forest is the most significant habitat for birds by supporting around 75% of all bird species while only 45% of all bird species have adapted to humans modified habitats. The research was conducted in the Montane Forest Research Station, Jos, Plateau State, in other to determine the abundance, diversity and effect of habitat types on bird’s species diversity. Fifteen transects of 200m were laid in the three habitat types (riparian forest, farmland and residential area) using stratified random sampling method. The data collected were analysed using R console. Shannon Weiner diversity index was used to analyse species diversity while generalized linear model was used to determine the effect of the habitat variables on bird species diversity. The result showed a total number of 1466 individual birds belonging to 17 families and 60 bird species were sighted. The abundance of birds was highest in riparian forest (2252), farmland (1732) and Residential area (1094) with no significance difference (p=0.177). Species richness was higher in the riparian forest (57), farmland (49), and the residential area (44). It also revealed that bird diversity index was highly significant. Riparian forest had the highest diversity (4.77), and the species were more evenly distributed (0.6) as compared to the other habitat types. The higher the number of trees and canopy cover the higher the diversity of species as was observed in the riparian forest where forest species that weren’t seen in the other habitats were found. The farmland and residential areas also hold a considerable number of some generalist bird species due to some patches of vegetation found in the habitat. Therefore, conservation efforts should be directed towards keeping vegetation intact in human dominated areas, as it serves as repository for bird species which are ecologically important. Hence, planting trees (economic, fruit and ornamental) should be encouraged.

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 Bird Diversity in Nensebo Moist Afromontane Forest Fragment, South Eastern Ethiopia.

2020 ◽  
Vol 13 (1) ◽  
pp. 1-9
Author(s):  
Ziyad Jemal ◽  
Zerihun Girma ◽  
Girma Mengesha
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Species Composition ◽  
Diversity Index ◽  
Bird Species ◽  
Bird Conservation ◽  
Habitat Types ◽  
Forest Habitat ◽  
Afromontane Forest ◽  
Species Richness And Abundance

Background: Birds are one component of biodiversity. Ethiopia is rich in biodiversity resources. The avian diversity record is far from complete. There is no scientifically documented information on bird species composition and abundance at Nensebo forest. The objective of the study was to assess species composition, relative abundance and distribution of birds at Nensebo forest in southern Ethiopia. Methods: We employed a stratified random sampling technique with our study area stratified into two dominant habitat types: moist Afromontane forest and modified habitat. Within strata, we established 20 transect lines of 1km length and 0.25km width to sample 27.75% of the study area. We used line transect count methods aided by binoculars to estimate avian species diversity and distribution. We employed quantitative biodiversity indices, such as Shannon wiener diversity indexes to compare species diversity among habitat types and two way ANOVA to analyze the effect of season and habitat on bird species richness and abundance. Results: A total of 105 bird species consisting of 1 endemic, 8 near endemic, 1 globally threatened and 9 Palearctic migrants were recorded in Nensebo forest. Species richness and abundance varied between habitat types in Nensebo forest with mean species richness greater in modified habitat (mean= 4.70 ±1.65) as compared to moist Afromontane forest habitat (mean= 3.95 ±4.12, F=94.66 P<0.001). Additionally, modified habitat (Shannon diversity index= 4.131) harbored higher diversity of birds as opposed to Afromontane forest habitat (Shannon diversity index=3.79). Conclusion: The Nensebo forest has high avian species diversity including several endemic and endangered species revealing the importance of this site for bird conservation. Although we found that habitat heterogeneity favored bird species diversity, moist Afromontane habitat is critical for forest obligate species. Hence, sustainable bird conservation strategies including land use planning should be initiated for this area.

scholarly journals A study of composition and diversity variation of avifauna along with different types of agroforestry system in Kibet town, Southern Ethiopia

2022 ◽  
Vol 95 (1) ◽  
Author(s):  
Hussen Yasin ◽  
Wondimagegnehu Tekalign
Keyword(s):  
Diversity Index ◽  
Habitat Type ◽  
Bird Species ◽  
Bird Community ◽  
Agroforestry System ◽  
Southern Ethiopia ◽  
Habitat Types ◽  
Feeding Guild ◽  
Different Types ◽  
Ploceus Cucullatus

Abstract Background Agroforestry is an integrated land-use system that plays a great role in the conservation of landscape biodiversity. The study aimed to assess the composition and diversity of avian species along with different habitat types of agroforestry in Kibet Town, Southern Ethiopia. Methods Four habitat types of agroforestry system which are home gardens, live fences, parkland, and eucalyptus woodlot were identified. Line transects were used for bird surveys. The Shannon diversity index (H′) and species evenness index (E) were used to compare diversity among habitat types. A similarity percentages (SIMPER) test was carried out to identify the main species and feeding guild that typified each habitat type. The overall significance was assessed with the ANOSIM test using PAST (version 4.03). Results A total of 50 bird species belonging to 28 families and 10 orders were recorded. Order Passeriformes (67.3%) had the highest number of species. Bird community composition differed among habitat types. The dissimilarity was mainly due to White-browed robin-chat (Cossypha heuglini), Streaky seed-eater (Serinus striolatus), Village Weaver (Ploceus cucullatus), African Paradise-Flycatcher (Terpsiphone viridis), and Black-Headed Paradise Flycatcher (T. rufiventer). The finding also revealed that insectivore was the dominant feeding guild. Conclusions The present study shows evidence that more insectivore bird species use different types of agroforestry as habitat and foraging sites. So, any concerned bodies who have engaged in avian conservation should give special consideration to this modified landscape.

scholarly journals KEANEKARAGAMAN JENIS BURUNG DI KEBUN CAMPURAN

2021 ◽  
Vol 16 (1) ◽  
pp. 65-85
Author(s):  
Hadinoto Hadinoto ◽  
Eni Suhesti
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Species Abundance ◽  
Bird Species ◽  
Acacia Mangium ◽  
Distribution Analysis ◽  
Sweet Potatoes ◽  
Species Diversity Index ◽  
Index Species ◽  
Bird Distribution

Birds are one of the ecosystem components that have an important role in supporting the life cycle of organisms. The research objectives were to calculate the diversity of bird species and identify sources of bird feed in mixed gardens. Bird data were analyzed using Species Diversity Index, Species Richness Index, Species Abundance Index, dominance analysis, bird distribution analysis and species encounter level analysis, for vegetation analyzed based on the type and part eaten by the birds. In the mixed garden of Pandau Jaya Village, 27 species of birds were found consisting of 15 families. The types of birds that were frequently present were the Cucak Kutilang (Pycnonotus aurigaster) with 44 individuals and the Perkutut Jawa (Geopelia striata) with 37 individuals. Bird species diversity (H) in mixed gardens was relatively moderate with a value of 2.90, the Evenness Index (E) of 0.88 and the Reachennes Index (R) of 4.40. Vegetation types as a source of food: Mahogany, Jengkol, Jackfruit, Jambu Air, Acacia mangium, Rubber, Matoa, Salam, Angsana, Mango, Breadfruit, Rambutan, Longan, Starfruit, Sengon, Kersen, Lamtoro, Beringin, Ketapang, Mahang, Palm Oil , Coconut, Areca, Palm, Cassava, Sweet Potatoes, Corn, Taro, Eggplant, Chili, Tekokak, Lengkuas, Sugarcane, Long Beans, Banana, Papaya, Flowers,Grasses.

scholarly journals KEANEKARAGAMAN JENIS BURUNG DIURNAL DI KAWASANEKOWISATA RIAM SOLANG KECAMATAN SENGAH TEMILA KABUPATEN LANDAK PROVINSI KALIMANTAN BARAT

2020 ◽  
Vol 8 (3) ◽  
Author(s):  
Yosef Joni ◽  
Erianto Erianto ◽  
Sarma Siahaan
Keyword(s):  
Diversity Index ◽  
Bird Species ◽  
Wealth Index ◽  
Scientific Data ◽  
Living Systems ◽  
Bird Diversity ◽  
Food Chains ◽  
West Kalimantan ◽  
The Third ◽  
Evenness Index

Riam Solang tourism object is one of the natura attractions in Senakin Village Sengah Temila district Landak Regency with area 16,192.98 (161 km). Birds are one component of the ecosystem that has an importan role in supporting the life cycle of an organism. This situation can be seen from the food chains and webs of life that make up living systems with other ecosystem components such as plants with insects The purpose of this study was to obtain data on the diversity of diurnal bird species in the Riam Solang ecotourism Sengah Temila, District Landak Regency West Kalimantan Province. The results of the study are expected to be able to provide scientific data and information on the diversity of diurnal bird species in the Riam Solang canyon ecotourism Sengah Temila, District Landak Regency West Kalimantan Province. The results of diversity diurnal bird species in Riam Solang that in first path the diversity index was 2.8695, in the second path the diversity index was 2.7129, in the third path the diversity index was 2.6944, and in the fourth path the diversity index is 2.7754. While the results of type evenness index in the frist lane was 0,9018, in the second path the evenness index is 0,8911, in the third path evenness index is 0,8994, and in the fourth path evenness index is 0,8979. The results of the type wealth index found at the study site are in first path the wealth type index is 4,6656, in the second path the wealth index 4,2386, in the third path wealth index 4,1318, and in the fourth path the wealth type index is 4,4504.Keyword: Diurnal Bird, Diversity, Riam Solang, Species

Bird community structure in natural and urbanized habitats along an altitudinal gradient in Pauri district (Garhwal Himalaya) of Uttarakhand state, India

Biologia ◽  
2012 ◽  
Vol 67 (4) ◽  
Author(s):  
Archana Naithani ◽  
Dinesh Bhatt
Keyword(s):  
Community Structure ◽  
Altitudinal Gradient ◽  
Diversity Index ◽  
Bird Species ◽  
Bird Community ◽  
High Elevation ◽  
Base Line ◽  
Natural Habitats ◽  
Forest Habitat ◽  
Rarefaction Analysis

AbstractIn the Indian subcontinent there is hardly any study that compares the bird community structure of urban/suburban areas with those of forest habitat. The present survey identified diverse assemblages of birds in the Pauri district at different elevations. A total of 125 bird species belonging to 40 families including two least count species (Lophura leucomelanos and Pucrasia marcolopha) were recorded during this survey in the forest and urbanized habitats of Pauri District (Garhwal Hiamalaya) of Uttarakhand state, India. The high elevation (Pauri 1600–2100 m a.s.l.), mid elevation (Srikot-Khanda 900–1300 m a.s.l.) and low elevation (Srinagar 500–900 m a.s.l.) contributed 88.8%, 63.2% and 58.4% of the total species respectively. Rarefaction analysis and Shannon diversity index showed that the high elevation forest habitat had highest bird species richness (BSR) and bird species diversity (BSD) followed by the mid and then the low elevation forests. BSR and BSD fluctuated across seasons at all elevations but not across habitat types. Present study provides a base line data about avian community composition in urbanized and natural habitats along altitudinal gradient in the study area. This information may be useful to the conservation biologists for the better management and conservation of the avifauna in the Western Himalaya, a part of one of the hot biodiversity spots of the world.

scholarly journals Factors affecting the species richness and composition of bird species in a community managed forest of Nepal

2021 ◽  
Vol 13 (9) ◽  
pp. 19212-19222
Author(s):  
Bishow Poudel ◽  
Bijaya Neupane ◽  
Rajeev Joshi ◽  
Thakur Silwal ◽  
Nirjala Raut ◽  
...  
Keyword(s):  
Diversity Index ◽  
Bird Species ◽  
Habitat Characteristics ◽  
Lower Percentage ◽  
Bird Diversity ◽  
Limited Information ◽  
Managed Forest ◽  
Point Count ◽  
Community Forests ◽  
Wiener Diversity Index

There exists limited information on biodiversity including avifaunal diversity and habitat condition in community forests (CF) of Nepal; thus we aimed to fulfill such gaps in Tibrekot CF of Kaski district. We used the point count method for assessing bird diversity and laid out a circular plot size of radius 5-m within 15-m distance from each point count station for recording the biophysical habitat characteristics. Bird species’ diversity, richness and evenness were calculated using popular indexes and General Linear Model (GLM) was used to test the respective effect of various biophysical factors associated with the richness of bird species. In total, 166 (summer 122, winter 125) bird species were recorded in 46 sample plots. The Shannon-Wiener diversity index was calculated as 3.99 and 4.09, Margalef’s richness index as 16.84 and 17.53 and Pielou’s evenness index as 0.83 and 0.84 for summer and winter, respectively. The influencing factors for richness of bird species were season (χ21, 90= 112.21; P= 0.016) with higher richness in the summer season and low vegetation cover (χ21, 89= 113.88; P= 0.0064) with higher richness in lower percentage cover. Thus, community managed forest should be protected as it has a significant role in increasing bird diversity, which has potential for attracting avifaunal tourism for the benefit of the local communities.

scholarly journals Birds species composition and abundance of a relativelly undisturbed vegetation at Mount Pati, Lokoja, Kogi State

2019 ◽  
Vol 6 (12) ◽  
pp. 271-282
Author(s):  
Dauda Tanko ◽  
Rita Chinweuba
Keyword(s):  
State Government ◽  
Diversity Index ◽  
Anthropogenic Activities ◽  
Bird Species ◽  
Activity Level ◽  
Line Transect ◽  
Biological Factors ◽  
Wet Season ◽  
Fuel Wood ◽  
Wiener Diversity Index

Avifauna of a relatively undisturbed vegetation at Mount Patti of Lokoja was surveyed from January to June, 2018. Line transect and point count techniques were used for data collection. This was done by weekly visits to the site between 6:00 h and 10:00 h of the day. Bird identification was done with the aid of a pair of binoculars, Field Guide of birds of western Africa and recorded bird calls. Monthly variation and season variation in bird composition and abundance were compared using Shannon-Wiener diversity index and equitability index. There were 39 species in 21 families encountered during the survey. The Family Nectarinidae had the highest number of 5 species, followed by Columbidae and Estrildidae with 4 species each. A total of 1,148 individuals were encountered during the six months survey with village weaver having the highest encountered rate of 107 while yellow-throated Long-claw had the least encountered rate of 4 individuals. Fluctuation was observed in the monthly encountered rate of the birds. Diversity and equitability indices had their highest values of 5.24 and 1.51 in January. More birds (696) were encountered in the wet season than the dry season (452). Four species were seen only in the wet season. Species effort curve showed that there are more species to be discover. The number of species encountered in this study revealed that the mountain is rich composition of bird species, even though the site seems to favour species that show preference to disturbed areas. The on-going anthropogenic activities probably paved way to these species to move in. Monthly and seasonal fluctuation of bird species diversity and abundance may be due to a combination of physical and biological factors. The physical and biological factors observed at the site which we speculate could be reasons for the observed fluctuations include slash and burnt system of farming, fuel-wood harvesting, intensive sporting activities creation of foot paths etc. High encountered rate indicate abundance and high activity level of the species. The village weaver was the most encountered species probably because they are known to be lousy, move in flocks and breed in colonies. In view of the rich composition and abundance of bird species on Mount Patti and the site being a suitable breeding site for the weavers. We recommend further study of the place as there are yet more species to be discovered as indicated by the species effort curve. There is need for conservation procedures to be initiated at the place and this study should serve as a baseline to initiate such programme by the state government.

scholarly journals Bird Species Identification Using Spectrogram Based on Multi-Channel Fusion of DCNNs

Entropy ◽  
2021 ◽  
Vol 23 (11) ◽  
pp. 1507
Author(s):  
Feiyu Zhang ◽  
Luyang Zhang ◽  
Hongxiang Chen ◽  
Jiangjian Xie
Keyword(s):  
Species Identification ◽  
Feature Fusion ◽  
Bird Species ◽  
The Other ◽  
Identification Accuracy ◽  
Mean Average Precision ◽  
Training Dataset ◽  
Model Parameters ◽  
Average Precision ◽  
Fusion Mode

Deep convolutional neural networks (DCNNs) have achieved breakthrough performance on bird species identification using a spectrogram of bird vocalization. Aiming at the imbalance of the bird vocalization dataset, a single feature identification model (SFIM) with residual blocks and modified, weighted, cross-entropy function was proposed. To further improve the identification accuracy, two multi-channel fusion methods were built with three SFIMs. One of these fused the outputs of the feature extraction parts of three SFIMs (feature fusion mode), the other fused the outputs of the classifiers of three SFIMs (result fusion mode). The SFIMs were trained with three different kinds of spectrograms, which were calculated through short-time Fourier transform, mel-frequency cepstrum transform and chirplet transform, respectively. To overcome the shortage of the huge number of trainable model parameters, transfer learning was used in the multi-channel models. Using our own vocalization dataset as a sample set, it is found that the result fusion mode model outperforms the other proposed models, the best mean average precision (MAP) reaches 0.914. Choosing three durations of spectrograms, 100 ms, 300 ms and 500 ms for comparison, the results reveal that the 300 ms duration is the best for our own dataset. The duration is suggested to be determined based on the duration distribution of bird syllables. As for the performance with the training dataset of BirdCLEF2019, the highest classification mean average precision (cmAP) reached 0.135, which means the proposed model has certain generalization ability.

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