scholarly journals Birds surveyed in the harvested and unharvested areas of a reduced-impact logged forestry concession, located in the lowland subtropical humid forests of the Department of Santa Cruz, Bolivia

Check List ◽  
2007 ◽  
Vol 3 (1) ◽  
pp. 43 ◽  
Author(s):  
Adam Felton ◽  
Bennett A. Hennessey ◽  
Annika M. Felton ◽  
David B. Lindenmayer
Keyword(s):  
Community Composition ◽  
Bird Species ◽  
Bird Community ◽  
Font Size ◽  
Santa Cruz ◽  
Wet Season ◽  
Point Count ◽  
Logging Effects ◽  
Logged Forest ◽  
Reduced Impact Logging

As part of a larger study of reduced-impact logging effects on bird community composition, we surveyed birds from December to February during the 2003-2004 wet-season within harvested and unharvested blocks of the La Chonta forestry concession, Department of Santa Cruz, Bolivia. The logged forest was harvested using reducedimpact logging techniques between one and four years previously. During point count surveys, we identified 5062 individual birds, belonging to 155 species, and 33 families. We provide a list of bird species found within the harvested and unharvested blocks of the concession for the benefit of other researchers assessing the responses of Neotropical avifauna to disturbance, and to facilitate increased understanding of the diverse bird assemblages found within the lowland subtropical humid forests of Bolivia. 

scholarly journals Bird Communities In Seblat Nature Recreation Park (SNRP) North Bengkulu, Bengkulu

2016 ◽  
Vol 8 (1) ◽  
pp. 25
Author(s):  
Eki Susanto ◽  
Yeni Aryati Mulyani ◽  
Bambang Suryobroto
Keyword(s):  
Species Abundance ◽  
Bird Species ◽  
Biology Education ◽  
Bird Community ◽  
Bird Communities ◽  
Community Similarity ◽  
Point Count ◽  
Net Method ◽  
Logged Forest ◽  
Vegetation Structures

<p>Bird communities are the composition of several bird species that live together in the same place, time and interact with other birds. The diversity of birds in an area can be used as an indicator of stabilizing an area. Changes of vegetation structures due to logging practices can affect the availability of resources for bird communities. The objective of the research was to examine diversity, richness, bird species abundance and bird community similarity at HS1 (logged forest 1974), HS2 (logged forest 1989/1990) and HS3 (fully logged forest 1989/1990) in Seblat Nature Recreation Park (SNRP). The research was conducted in July – September 2013. Data collection was conducted by point count method (total 36 points) and mist net method (total 4752 nets hours). The Research showed 85 bird’s species from 33 families were recorded. HS2 was highest value of diversity and richness (H ‘= 3.63, DMG = 10.07). The highest relative abundance species in HS1 was Emerald Dove (Chalcophaps indica), while HS2 and HS3 were Slender-billed Crow (Corvus enca). The bird community similarity was highest in HS2 and HS3 (ISj = 0.58).</p><p><strong>How to Cite</strong></p><p>Susanto, E., Mulyani, Y. A., &amp; Suryobroto, B. (2016). Bird Communities In Seblat Nature Recreation Park (SNRP) North Bengkulu, Bengkulu. <em>Biosaintifika: Journal of Biology &amp; Biology Education</em>, 8(1), 25-32.</p>

scholarly journals A comparison of bird communities in the anthropogenic and natural-tree fall gaps of a reduced-impact logged subtropical forest in Bolivia

2008 ◽  
Vol 18 (2) ◽  
pp. 129-143 ◽  
Author(s):  
Adam Felton ◽  
Jeff T. Wood ◽  
Annika M. Felton ◽  
David B. Lindenmayer ◽  
Bennett A. Hennessey
Keyword(s):  
Community Composition ◽  
Tree Species ◽  
Bird Community ◽  
Subtropical Forest ◽  
Bird Communities ◽  
The Other ◽  
Sensitive Species ◽  
Significant Difference ◽  
Logged Forest ◽  
Reduced Impact Logging

AbstractWe studied bird community composition and abundance within four vegetation and disturbance categories located within selectively logged and unlogged forest in a Bolivian subtropical lowland forestry concession. The logged forest was subject to reduced-impact logging between 1 and 4 years prior to our study. The four categories were: 1) ‘gap’ points possessing natural or anthropogenic tree-fall gaps; 2) ‘target’ points with one of five commercial tree species of harvestable size; 3) ‘future’ points possessing a commercial tree below harvestable size and 4) ‘non-target’ points not possessing harvestable tree species. The bird community composition of logging gaps significantly differed from that found within natural tree-fall gaps in the unlogged forest P< 0.05. Species richness was higher in natural tree-fall gaps than in anthropogenic gaps. Furthermore, a higher proportion of disturbance sensitive species were associated with natural-tree fall gaps, whereas a higher proportion of disturbance tolerant species were associated with anthropogenic gaps. No significant difference was detected in the bird community composition for the other three vegetation categories surveyed. We discuss the conservation and silvicultural repercussions of these results.

scholarly journals Fire effects on the composition of a bird community in an amazonian Savanna (Brazil)

2005 ◽  
Vol 65 (4) ◽  
pp. 683-695 ◽  
Author(s):  
R. Cintra ◽  
T. M. Sanaiotti
Keyword(s):  
Species Richness ◽  
Community Composition ◽  
Spatial Scales ◽  
Bird Species ◽  
Bird Community ◽  
Fire Effects ◽  
Bird Abundance ◽  
Bird Species Richness ◽  
Byrsonima Crassifolia ◽  
Mist Net

The effects of fire on the composition of a bird community were investigated in an Amazonian savanna near Alter-do-Chão, Pará (Brazil). Mist-net captures and visual counts were used to assess species richness and bird abundance pre- and post-fire in an approximately 20 ha area. Visual counts along transects were used to survey birds in an approximately 2000 ha area in a nearby area. Results using the same method of ordination analysis (multidimensional scaling) showed significant effects of fire in the 20 ha and 2000 ha areas and strongly suggest direct effects on bird community composition. However, the effects were different at different spatial scales and/or in different years, indicating that the effects of fire vary spatially and/or temporally. Bird community composition pre-fire was significantly different from that found post-fire. Using multiple regression analysis it was found that the numbers of burned and unburned trees were not significantly related to either bird species richness or bird abundance. Two months after the fire, neither bird species richness nor bird abundance was significantly related to the number of flowering trees (Lafoensia pacari) or fruiting trees (Byrsonima crassifolia). Since fire is an annual event in Alter-do-Chão and is becoming frequent in the entire Amazon, bird community composition in affected areas could be constantly changing in time and space.

scholarly journals Forest and biodiversity: a multiscale analysis of forest bird community in Varese district

2013 ◽  
Vol 82 (1-2) ◽  
Author(s):  
Alessandra Gagliardi ◽  
Damiano Preatoni ◽  
Fabio Saporetti ◽  
Guido Tosi
Keyword(s):  
Community Composition ◽  
Landscape Metrics ◽  
Environmental Variables ◽  
Multiscale Analysis ◽  
Bird Species ◽  
Bird Community ◽  
Multiscale Approach ◽  
Forest Bird ◽  
Area Data

Forests represent more than 45% of the Varese district area. Data of forest bird community composition are correlated with the appearance of woods. With a multiscale approach (1 km2 units and territories) some landscape metrics are analysed, in order to evaluate the influence of environmental variables on bird species.

scholarly journals Conserving native trees increases native bird diversity and community composition on commercial office developments

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Karen Dyson
Keyword(s):  
Community Composition ◽  
Environmental Gradients ◽  
Bird Species ◽  
Bird Community ◽  
Bird Communities ◽  
Bird Diversity ◽  
Bird Conservation ◽  
Tree Protection ◽  
Matrix Habitat ◽  
Site Use

Abstract In cities, woody vegetation provides critical shelter, nesting and foraging habitat for bird species of interest. Human actions—including development and landscaping choices—determine vegetation community composition and structure, making these choices critically important to urban bird conservation. A better understanding of how bird communities are impacted by parcel-scale actions can help guide policy and management best practices to improve matrix habitat quality and quantity. Here, I examined how bird habitat use varies along a vegetation gradient created by different development and landscaping choices. I surveyed 20 commercial office developments near Seattle in the Puget Trough region of Washington, USA selected using stratified random sampling, where I quantified bird communities and observed feeding behavior. I used GLMM and PERMANOVA models with data likelihood metrics to identify the best supported variables for bird site use, along with TITAN models to identify changes in community composition along environmental gradients. I found that measures of bird effective species richness and bird community are positively influenced by the presence of more native conifers, including the presence of a stand predating development and the height and density of native conifers. Measures of the native bird community are negatively influenced by higher non-native tree density. In contrast to prior research, top-down landscape-scale variables did not explain variation in measures of the bird community on office developments. Importantly, I found that birds are associated with the same habitat on office developments as observed elsewhere. Together, my findings suggest an important role for developers, land owners, landscape architects, and tree protection policy in bird conservation.

scholarly journals Keanekaragaman Jenis Burung di Kawasan Pengembangan Institut Teknologi Sumatera (ITERA)

2021 ◽  
Vol 14 (1) ◽  
pp. 1-9
Author(s):  
Indah Oktaviani ◽  
Yanti Ariyanti ◽  
Sovia Santi Leksikowati ◽  
Muhammad Asril
Keyword(s):  
Environmental Changes ◽  
Diversity Index ◽  
Conservation Status ◽  
Bird Species ◽  
Secondary Data ◽  
Bird Community ◽  
Bird Diversity ◽  
Feeding Guild ◽  
Point Count ◽  
Wiener Diversity Index

AbstrakKawasan kampus Institut Teknologi Sumatera (ITERA) sedang mengalami perkembangan fisik yang pesat, seperti pembangunan gedung perkuliahan, laboratorium, asrama, juga embung untuk sumber air. Informasi mengenai keanekaragaman hayati di ITERA sendiri belum banyak diteliti, salah satunya adalah keanekaragaman burung. Burung merupakan hewan besar yang cukup sensitif dengan perubahan lingkungan. Penelitian ini dilakukan untuk mendapatkan data mengenai keanekaragaman burung di ITERA untuk memberikan informasi dasar. Metode yang digunakan adalah teknik point count, diterapkan pada lima stasiun utama yang dipilih berdasarkan pusat aktivitas pembangunan. Analisis yang digunakan adalah indeks keanekaragaman, kemerataan, juga kelimpahan. Selain itu, status konservasi dan tipe pakan jenis burung dianalisis menggunakan data sekunder. Hasil penelitian menunjukkan terdapat 19 jenis burung dari 16 famili. Keanekaragaman jenis burung berdasarkan indeks Shannon-Wiener tergolong sedang dan kemerataan jenis merata. Dari kategori kelimpahan yang digunakan terdapat dua jenis burung yang umum ditemukan. Bersumber pada PP No. 7 tahun 1999, terdapat empat jenis burung di ITERA yang termasuk ke dalam kategori dilindungi dan satu jenis termasuk kategori Appendix II di CITES. Feeding guild burung di ITERA didominasi tipe omnivora dan insektivora. AbstractInstitut Teknologi Sumatera (ITERA) campus area is undergoing rapid physical development, such as the construction of lecture buildings, laboratories, dormitories, as well as reservoirs for water sources. Information on biodiversity in ITERA has not much studied, one of which is bird diversity. Birds are large animals that are quite sensitive to environmental changes. This study aims to obtain data on bird diversity at ITERA to provide the baseline information. The method used is a point count technique, applied to five main stations selected based on the center of development activities. The analysis used is an index of diversity, evenness, and abundance. Besides, the conservation status and feed type of bird species were analyzed using secondary data. The results showed that there were 19 species of birds from 16 families. The Shannon-Wiener diversity index classified the bird community as a moderate, and the community evenness index was stable. From the abundance category, two types of birds commonly found. Based on PP No. 7 of 1999, there are four species of birds in ITERA, which included in the protected category and one species, including the Appendix II category in CITES. Omnivorous and insectivorous types dominate bird guild feeding in ITERA.

scholarly journals Respon Komunitas Burung terhadap Pembangkit Listrik Tenaga Panas Bumi (PLTP) Kamojang, Bandung, Jawa Barat

2018 ◽  
Vol 12 (2) ◽  
pp. 156 ◽  
Author(s):  
Diyah Kartikasari ◽  
Satyawan Pudyatmoko ◽  
Novianto Bambang Wawandono ◽  
Pri Utami
Keyword(s):  
Power Plant ◽  
Bird Species ◽  
Bird Community ◽  
Bird Communities ◽  
Bird Diversity ◽  
Species Number ◽  
Point Count ◽  
Geothermal Power Plant ◽  
Number Of Species ◽  
Geothermal Power

Penelitian ini bertujuan untuk mengetahui respon komunitas burung terhadap keberadaan Pembangkit Listrik Tenaga Panas Bumi Kamojang. Kami membandingkan keanekaragaman dan kekayaan jenis burung pada lokasi yang terdampak (DL) dan tidak terdampak (TL) di Wilayah Kerja Panas Bumi Kamojang, Cagar Alam Kamojang dan Taman Wisata Alam Kamojang di Kabupaten Bandung Provinsi Jawa Barat. Lokasi yang terdampak berada di sekitar sumur produksi atau pembangkit listrik tenaga panas bumi (30 sampel) sedangkan lokasi yang tidak terdampak adalah dengan jarak 3.000 m sampai 9.000 m dari fasilitas tersebut (42 sampel). Pengumpulan data dilakukan selama dua musim; musim kemarau dan penghujan (2015-2016). Kami mengumpulkan data komunitas burung dan data habitat dengan metode point count yang ditempatkan secara sistematis di setiap lokasi. Kami menemukan 124 spesies burung yang terdiri dari 35 famili dan 16 spesies di antaranya adalah burung endemik di Pulau Jawa. Dua puluh tiga spesies dilindungi oleh undang-undang di Indonesia, sembilan spesies termasuk dalam daftar lampiran CITES dan lima spesies masuk dalam Daftar Merah Spesies Terancam IUCN tahun 2017. Terdapat perbedaan respon antara komunitas burung di lokasi terdampak dan tidak terdampak yang ditunjukkan dengan perbedaan rata-rata jumlah spesies, jumlah individu masing-masing spesies, indeks keanekaragaman ShannonWiener. Lokasi tidak terdampak memiliki nilai lebih tinggi pada parameter ini dibanding lokasi yang terkena dampak. Demikian juga, jumlah spesies, jumlah individu vegetasi dan indeks keanekaragaman hayati ShannonWiener pada lokasi TL memiliki nilai rata-rata lebih tinggi daripada lokasi DL. Hal ini membuktikan bahwa meskipun panas bumi dianggap sebagai energi ramah lingkungan namun dalam penggunaannya masih berdampak pada keanekaragaman hayati di sekitarnya terutama untuk jenis burung. Response of Bird Community to Kamojang Geothermal Power Plant, Bandung, West JavaAbstractThis study aimed to investigate the response of bird communities on the presence of geothermal power plant of Kamojang. We compared the bird diversity and richness of affected (DL) and not affected (TL) in Kamojang Geothermal Working Area, Kamojang Nature Reserve and Kamojang Nature Park in Bandung regency of West Java Province. The affected sites were surrounding production wells or geothermal power plants (30 samples) whereas not affected sites were with distance of 3,000 m to 9,000 m from those facilities (42 samples). The data collection was carried out during two seasons; dry and rainy season in (2015-2016). In each site, we collected bird community data and habitat data with the point count method which was placed systematically on each sites. We found 124 birds species belongs to 35 families with 16 endemic species in Java Island. Twenty three species are protected by Indonesian law, with nine species are in the CITES appendix list and five species are listed in the IUCN Red List of Threatened Species of 2017. There was a difference of responses between bird communities in the affected and not affected sites which is indicated by differences in the mean number of species, number of individuals in each species, and Shannon-Wiener's diversity index. The not affected sites had higher value on these parameters than the affected sites. Similarly, number of species, number of individual vegetation, and Shannon-Wiener biodiversity index in TL sites had higher mean values than DL sites. This proves that although geothermal is considered as environmentally friendly energy but in its utilization it still has an impact on the surrounding biodiversity especially for bird species.

scholarly journals The Relative Importance of Human Disturbance, Environmental and Spatial Factors on the Community Composition of Wetland Birds

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3448
Author(s):  
Seid Tiku Mereta ◽  
Pieter Lemmens ◽  
Luc De Meester ◽  
Peter L. M. Goethals ◽  
Pieter Boets
Keyword(s):  
Community Composition ◽  
Human Disturbance ◽  
Environmental Variables ◽  
Variation Partitioning ◽  
Bird Species ◽  
Bird Community ◽  
Minor Role ◽  
Compositional Variation ◽  
Relative Importance ◽  
Spatial Factors

The present study investigates the relative importance of human disturbance, local environmental and spatial factors on variations in bird community composition in natural Ethiopian wetlands with high biodiversity conservation value. We quantified bird abundances, local environmental variables and human disturbances at 63 sites distributed over ten wetlands in two subsequent years. Variation partitioning analyses were used to explore the unique and shared contributions of human disturbance, local environmental variables and spatial factors on variations in community compositions of wetland bird species. Local environmental variables explained the largest amount of compositional variation of wetland bird species. Productivity-related variables were the most important local environmental variables determining bird community composition. Human disturbance was also an important determinant for wetland bird community composition and affected the investigated communities mainly indirectly through its effect on local environmental conditions. Spatial factors only played a minor role in variations in bird community composition. Our study highlights the urgent need for integrated management approaches that consider both nature conservation targets and socio-economic development of the region for the sustainable use and effective conservation of wetland resources.

scholarly journals Diversity and temporal variation of the bird community in paddy fields of Kadhiramangalam, Tamil Nadu, India

2019 ◽  
Vol 11 (10) ◽  
pp. 14279-14291
Author(s):  
Chaithra Shree Jayasimhan ◽  
Pramod Padmanabhan
Keyword(s):  
Species Composition ◽  
Community Composition ◽  
Tamil Nadu ◽  
Bird Species ◽  
Bird Community ◽  
Paddy Fields ◽  
Common Myna ◽  
Short Period ◽  
Community Data ◽  
Paddy Cultivation

Paddy, a major food crop of India, provides a variety of habitats in a short period of time and supports diverse organisms.  Paddy fields also harbour many birds with varying species composition across the different cultivation phases of paddy.  This study, conducted in the paddy fields of Kadhiramangalam, Tamil Nadu, India, recorded the bird community composition there during the various cultivation phases of paddy.  The bird community data was analysed and a total of 87 bird species were recorded from the study area belonging to 41 families and 13 orders.  The growth phase (PS 3) is the most diverse phase.  The bird composition showed a significant variation across the paddy cultivation phases with overall average dissimilarity of 71.41%.  The patterns shown by graphs of bird species composition across the paddy cultivation phases is based on guild, habitat usage and order overlap and elucidates that the change in bird community composition temporally can be attributed to the niche variability across the paddy cultivation phases.  The major species contributing to these changes observed are Black-headed Munia, Baya Weaver, Common Sandpiper, Barn Swallow, Common Myna, and Black Drongo in this region.   

scholarly journals Effects of land abandonment and changing habitat structure on avian assemblages in upland pastures of Bulgaria

2009 ◽  
Vol 20 (2) ◽  
pp. 200-213 ◽  
Author(s):  
STOYAN C. NIKOLOV
Keyword(s):  
Habitat Complexity ◽  
Habitat Structure ◽  
Structural Characteristics ◽  
Conservation Status ◽  
Grassland Birds ◽  
Bird Species ◽  
Structural Complexity ◽  
Bird Community ◽  
Bird Species Richness ◽  
Point Count

SummaryOver the past half century, grassland birds in Europe have declined dramatically and in order to maintain and restore their populations it is critical to understand how habitat structures and quality within pastures affect birds. This study investigated the effects of habitat structure and pasture abandonment on grassland birds in IBA Ponor, western Bulgaria. Birds were sampled using the point count method at 143 randomly located circular plots and a total of 1,401 observations of birds from 31 species were recorded. The results showed that habitat complexity, management and landscape position influenced bird community structure and species occurrence within the upland pastures. Extensively grazed pastures supported higher structural complexity of vegetation cover and higher bird-species richness and diversity compared with abandoned ones. Moreover, bird species with a preference for grazed rather than abandoned pastures had higher conservation status and most were associated with shrub cover. To maintain high levels of avian diversity, habitat complexity within pastures should be maintained through extensive grazing, to ensure availability of scrub vegetation wherever possible. Finally, this study provided evidence that agri-environmental schemes should not be directly extrapolated from one country or region to another without been tested first, because within the same management, differences in habitat structural characteristics may exist due to the landscape and socio-economic characteristics of the region.

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