scholarly journals Influence of habitat features of urban streetscapes on richness and abundance of avian species

2021 ◽  
Vol 29 (1) ◽  
pp. 20-32
Author(s):  
Sarbasis Dutta ◽  
Goutam Kumar Saha ◽  
Subhendu Mazumdar
Keyword(s):  
Species Richness ◽  
Urban Areas ◽  
Weather Conditions ◽  
Avian Species ◽  
Green Spaces ◽  
Avian Diversity ◽  
Habitat Features ◽  
Calm Weather ◽  
Species Richness And Abundance ◽  
Habitat Feature

Abstract In human-dominated landscapes, roads are known to negatively influence birds causing decline in species richness, as well as reduction in the number of avian species. However, linear stretches of green spaces formed by roadside plantations in urban streetscapes can support diverse avian communities. In spite of being an integral habitat feature of urban areas, there is a clear paucity of studies on avian diversity in urban streetscapes. The present study was carried out in Kolkata, where data on avian species richness and abundance was collected from 16 randomly placed belt transects (replicates), each of 500 m length and 20 m width, on different major roads throughout the study area keeping a minimum gap of 200 m between adjacent transects to avoid data overlapping. Each of these transects were traversed on foot twice in a month from January to March 2017 during days with calm weather conditions. We recorded 31 species of birds belonging to 8 orders and 19 families, of which maximum species belonged to the order Passeriformes (13 species). We found that both abundance and species richness of birds in transects with higher number of trees (78±4.1 individuals and 19.55±1.703 species of birds) were significantly higher than transects with fewer trees (53.74±2.5 individuals and 9.5±0.789 species of birds). Amongst various habitat features along these streetscapes, the total number of trees positively influenced both species richness (GLMM: F1, 90=14.485, P<0.05) and abundance of birds (GLMM: F1, 90=8.081, P<0.05). However, the other land use variables (i.e. number of bushes, waterbodies, markets and buildings) neither influenced the abundance of birds nor the species richness. Our findings can be useful for urban development to perceive the importance of various habitat features in urban streetscapes in sustaining avian diversity.

scholarly journals Impact of greenspaces in city on avian species richness and abundance in Northern Africa

2017 ◽  
Vol 340 (8) ◽  
pp. 394-400
Author(s):  
Hani Amir Aouissi ◽  
Julien Gasparini ◽  
Adnène Ibrahim Belabed ◽  
Zihad Bouslama
Keyword(s):  
Species Richness ◽  
Northern Africa ◽  
Avian Species ◽  
Species Richness And Abundance

The Effects of Winter Temperature and Land Use on Mangrove Avian Species Richness and Abundance on Leizhou Peninsula, China

Wetlands ◽  
2019 ◽  
Vol 40 (1) ◽  
pp. 153-166
Author(s):  
Quan Chen ◽  
Guorui Xu ◽  
Zhifeng Wu ◽  
Peng Kang ◽  
Qian Zhao ◽  
...  
Keyword(s):  
Land Use ◽  
Species Richness ◽  
Winter Temperature ◽  
Avian Species ◽  
Leizhou Peninsula ◽  
Species Richness And Abundance

scholarly journals Avian species–area relationships indicate that towns are not different from natural areas

2018 ◽  
Vol 45 (4) ◽  
pp. 419-424 ◽  
Author(s):  
SIMONE FATTORINI ◽  
GIULIA LIN ◽  
CRISTINA MANTONI
Keyword(s):  
Species Richness ◽  
Urban Areas ◽  
Bird Species ◽  
Avian Species ◽  
Conservation Priorities ◽  
Natural Areas ◽  
Bird Richness ◽  
Negative Effect ◽  
Species Area ◽  
Human Density

SUMMARYUrban areas host many bird species, and urban species richness can be compared with that in natural areas using species–area relationships (SARs). We used a multimodel selection approach to investigate the influence of area, human population, elevation and climatic variables on species richness of breeding birds from 34 towns and 54 nature reserves in Italy. Using the linearized power function, area was identified as the most important correlate of avian species richness in both urban and natural areas. The SARs did not differ significantly between towns and reserves, although human density had a negative effect on bird richness. These findings underline the possible importance of urban areas in biodiversity conservation, but also stress that human density is a factor reducing species richness. However, species richness alone cannot inform conservation priorities because it does not take into account the different conservation values of species.

scholarly journals Rapid assessment of avian species richness and abundance using acoustic indices

2020 ◽  
Vol 115 ◽  
pp. 106400 ◽  
Author(s):  
Tom Bradfer-Lawrence ◽  
Nils Bunnefeld ◽  
Nick Gardner ◽  
Stephen G. Willis ◽  
Daisy H. Dent
Keyword(s):  
Species Richness ◽  
Rapid Assessment ◽  
Avian Species ◽  
Species Richness And Abundance

scholarly journals Vegetation management on private forestland can increase avian species richness and abundance

The Condor ◽  
2020 ◽  
Author(s):  
Jesse M Wood ◽  
Amy K Tegeler ◽  
Beth E Ross
Keyword(s):  
South Carolina ◽  
Species Richness ◽  
Forest Management ◽  
Management Practices ◽  
Basal Area ◽  
Timber Harvest ◽  
Avian Species ◽  
Active Management ◽  
Private Lands ◽  
Species Richness And Abundance

Abstract Conservation efforts on private lands are important for biodiversity conservation. On private lands in South Carolina, in the southeastern United States, forestry management practices (prescribed burning, thinning, herbicide application) are used to improve upland pine habitat for wildlife and timber harvest and are incentivized through U.S. Department of Agriculture Farm Bill cost-share programs. Because many forest-dependent avian species have habitat requirements created primarily through forest management, data are needed on the effectiveness of these management activities. We studied privately owned loblolly pine (Pinus taeda) stands in the South Carolina Piedmont region. Our objective was to understand how management practices influence avian species richness and abundance at local (forest stand) and landscape levels in relatively small stands (average ~28 ha). We surveyed 49 forest stands during 2 bird breeding seasons with traditional point counts and vegetation surveys. We evaluated the effects of management on pine stand characteristics, avian species richness, and abundance of state-designated bird species of concern. Repeated burning and thinning shifted stand conditions to open pine woodlands with reduced basal area and herbaceous understories. Stands with lower basal area supported greater avian species richness. Some species increased in abundance in response to active management (e.g., Brown-headed Nuthatch [Sitta pusilla] and Indigo Bunting [Passerina cyanea]), but relationships varied. Some species responded positively to increases in forest quantity at a landscape scale (1–5 km; e.g., Northern Bobwhite [Colinus virginianus]). We found species-rich avian communities and species of conservation concern on working timber lands, indicating that incentivized forest management on private lands can provide valuable habitat for wildlife.

scholarly journals Area is the primary correlate of annual and seasonal patterns of avian species richness in urban green spaces

2020 ◽  
Vol 203 ◽  
pp. 103892 ◽  
Author(s):  
Frank A. La Sorte ◽  
Myla F.J. Aronson ◽  
Christopher A. Lepczyk ◽  
Kyle G. Horton
Keyword(s):  
Species Richness ◽  
Avian Species ◽  
Green Spaces ◽  
Seasonal Patterns ◽  
Urban Green ◽  
Urban Green Spaces

scholarly journals Response of Ground Beetle (Coleoptera: Carabidae) Communities to Effect of Urbanization in Southern Osaka: An Analytical Approach Using GIS

2021 ◽  
Vol 13 (13) ◽  
pp. 7134
Author(s):  
Jin-Wook Park ◽  
Cheol Min Lee
Keyword(s):  
Land Use ◽  
Species Richness ◽  
Urban Areas ◽  
Open Space ◽  
Ground Beetle ◽  
Negative Influence ◽  
Green Spaces ◽  
Gis Data ◽  
Open Land ◽  
Study Sites

Urbanization involves the profound alteration of original habitats and causes habitat loss and biodiversity decline. This study aims to clarify the response of ground beetle communities to the effect of urbanization in southern Osaka, Japan. In total, 2950 individuals from 53 species of ground beetle were collected in nine urban green areas. The categories of land use regarding the study sites were determined based on GIS data. The community index was not significantly different between areas. Urban areas and roads in land use mainly have a negative influence on ground beetles. Paddies, fields, parks and green spaces, and open space were positively correlated with species richness of forest species and large-sized species, and open space was positively correlated with species richness and the density of open land species. However, ground beetle communities in different areas of varying sizes did not group separately. These results suggest that changes in paddies, fields, parks and green spaces, forests, and open space associated with the expanding urban area and road greatly influenced species composition, and the community structure remained similar.

scholarly journals Drivers of avian species richness and community structure in urban courtyard gardens

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Alessandro Pirzio Biroli ◽  
Benjamin M Van Doren ◽  
Ada Grabowska-Zhang
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
Urban Areas ◽  
Species Turnover ◽  
Model Averaging ◽  
Urban Ecosystems ◽  
Urban Ecosystem ◽  
Avian Species ◽  
Theoretic Approach ◽  
Ecosystem Research

Abstract Increasing global urbanisation has steered research towards understanding biodiversity in urban areas. Old city spaces throughout Europe have a proliferation of urban court gardens, which can create a mosaic of habitat pockets in an urban area. This article examines the patterns and drivers of avian species richness and community structure in 20 gardens of the constituent colleges of the University of Oxford. We conducted morning surveys across 7 weeks in May and June 2017 and used an information-theoretic approach and model averaging to identify important habitat predictors of species richness. We also studied community structure with Sorensen indices and non-metric multi-dimensional analysis. A total of 43 avian species were observed across all sites. Our sites generally differed in their avian assemblages, with greater species turnover than nestedness between sites. Site area was the strongest predictor of site species richness and surrounding habitat composition was the dominant driver of community structure. Thus, the largest gardens were the most species rich, but species composition among gardens differed based on the habitats in which they were embedded. We support using island biogeography theory to understand the avian species assemblages of urban ecosystems and stress the suitability of our study sites for future urban ecosystem research and generating wildlife awareness.

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