scholarly journals Bird diversity in an urban ecosystem: the role of local habitats in understanding the effects of urbanization

2018 ◽  
Vol 108 (0) ◽  
Author(s):  
Aline Goulart Rodrigues ◽  
Márcio Borges-Martins ◽  
Felipe Zilio
Keyword(s):  
Urban Planning ◽  
Species Distribution ◽  
Vegetation Cover ◽  
Urban Areas ◽  
Bird Species ◽  
Species Assemblages ◽  
Bird Diversity ◽  
Noise Levels ◽  
Habitat Features ◽  
Green Areas

ABSTRACT: Urbanization causes environment changes that directly affect biotic diversity, and understanding the relationship between fauna and urban features is a key aspect of urban planning. Birds are particularly affected by urbanization. Noise levels, for instance, negatively affect birds’ behavior and social communication, while the presence of green areas promotes bird diversity. The effects of urbanization could differ according with the level of urbanization, and our goal was to understand how bird species assemblages are related to urban features in an intermediate stage of urbanization (a city in Brazil with 2,470 inhabitants/km²). We used canonical correspondence analysis (CCA) and generalized linear models (GLM) analyses to assess how bird species assemblages are affected by urban features (e.g., noise level, abundance of buildings) as well as habitat features (e.g., vegetation cover). Despite we did not find a clear pattern of urbanization both the urban and habitat features had, even if weak, an effect on bird species distribution. Bird species distribution was spatially correlated, and we identified three groups: 1) grassland and wetland species; 2) forest species; 3) species tolerant to habitat degradation. Species richness was positively related to the proportion of trees, abundance of people and presence of buildings, and negatively affected by higher levels of noise. The abundance of species decreased as noise levels increased, but the proportion of green areas (open or forest vegetation) had a positive effect. Agreeing with previous research, our study shows that noise levels and vegetation cover seem to be the best predictors of diversity in urban areas. Nevertheless, the presence of particular habitats (wetlands, grasslands, woodlots), patchily distributed in the urban matrix, could buffer the effects of urbanization on birds. These habitats should thus be taken into account in urban planning.

scholarly journals Using Bioacoustics to Examine Vocal Phenology of Neotropical Migratory Birds on a Wild and Scenic River in Arizona

Birds ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 261-274
Author(s):  
Heather L. Bateman ◽  
Sidney B. Riddle ◽  
Erin S. Cubley
Keyword(s):  
Sonoran Desert ◽  
Migratory Birds ◽  
Riparian Forest ◽  
Bird Species ◽  
Migratory Bird ◽  
Bird Diversity ◽  
Yellow Warbler ◽  
Habitat Features ◽  
The Usa ◽  
Vocal Activity

Passive acoustic recorders have been used successfully as automated survey tools to detect terrestrial wildlife. However, few studies have monitored Neotropical migratory bird use of riparian forest habitat using this technology. Within dryland ecosystems, the forests along rivers support high bird diversity. Many bird species of conservation concern require these floodplain forest habitats for foraging, migration stop-overs, and breeding. Few studies have explored the use of acoustic records in riverine systems designated for conservation for their natural resource value via the Wild and Scenic Rivers Act in the USA. Using acoustic recorders, we document vocal activity of four riparian-obligate species (Bell’s Vireo, Vireo bellii; Summer Tanager, Piranga rubra; Yellow Warbler, Setophaga petechial; and Yellow-billed Cuckoo, Coccyzus americanus) to determine species occurrence along a Wild and Scenic River. We established three study reaches along the perennial Lower Verde River, in the Sonoran Desert of central Arizona, USA. Nine acoustic recorders were used over the period of 80–120 days during the summer of 2018. We measured vegetation composition and structure in 100 m2 plots paired with acoustic recorders. Visualizing vocal activity showed that three species were calling and singing at each reach; whereas, one species, the cuckoo, had fewer recordings and occurred later in the summer. We demonstrate the utility of acoustic monitoring even when applied to rare birds in complex riparian habitats. This information is important for land management and conservation efforts concerning these species of interest and identifying important habitat features in Southwestern US riparian woodlands.

scholarly journals Anthropogenic noise affects winter song structure of a long-distance migrant, Gambel’s white-crowned sparrow

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Jennifer N Phillips ◽  
Madhusudan Katti
Keyword(s):  
Urban Areas ◽  
Noise Levels ◽  
Long Distance ◽  
Zonotrichia Leucophrys ◽  
Wintering Grounds ◽  
Song Structure ◽  
Habitat Features ◽  
Acoustic Mismatch ◽  
Breeding Grounds ◽  
Zonotrichia Leucophrys Gambelii

Abstract Many animals learn to produce acoustic signals that are used to attract mates and defend territories. The structure of these signals can be influenced by external features of the environment, including the anthropogenic soundscape. In many sedentary species, habitat features and soundscape appears to influence the cultural evolution of songs, often with tradeoffs for better transmission over sexually selected song structure. However, none have investigated whether noise on the wintering grounds affects song structure, which for long-distance migrants may result in an acoustic ‘mismatch’ when returning to a breeding ground. This study investigates urban noise effects on song structure in a long-distance migrant, Zonotrichia leucophrys gambelii, on the wintering grounds in the Fresno Clovis Metropolitan Area and in outlying non-urban areas. Songs and background noise levels were recorded concurrently, and song measurements of frequency and duration were examined differences across noise levels and habitats . We found that the buzz and trill decrease in bandwidth in the presence of noise. The length of the whistle and buzz portion of the song also tends to decreases with noise in urban habitats. This trend toward short, pure tones in noisy areas may transmit better in noisy urban winter habitats, but may not be adaptive on quieter breeding grounds. We suggest that future studies should consider whether winter auditory feedback and song learning environments have consequences for song crystallization and breeding success for long-distance migrants.

scholarly journals Riparian tree and bird diversity in Cisadane River, South Tangerang City, Indonesia

2019 ◽  
Vol 20 (2) ◽  
pp. 595-603
Author(s):  
URFI IZZATI ◽  
HAYATI SARI HASIBUAN
Keyword(s):  
Species Diversity ◽  
Urban Areas ◽  
Diversity Index ◽  
Pearson Correlation ◽  
Bird Species ◽  
Bird Diversity ◽  
Systematic Sampling ◽  
Line Transect ◽  
Species Diversity Index ◽  
Riparian Tree

Abstract. Izzati U, Hasibuan HS. 2019. Riparian tree and bird diversity in Cisadane River, South Tangerang City, Indonesia. Biodiversitas 20: 595-603. Riparian is a riverbank area that has unique characteristics. It is a combination of terrestrial with aquatic habitats so that riparian ecosystems have high biodiversity values. Riparian is included in a protected area that is naturally designated for vegetation, but in reality, riparian areas, especially in urban areas, have a lot of conversion of land functions by humans so that it can disrupt diversity of tree and bird species. This study aims to identify the diversity of tree and bird species and the correlation between the two. Riparian length of Cisadane River, South Tangerang City is 20.15 km. The method used was plot line with size of 20 m x 20 m for tree data and line transect for bird data by systematic sampling with a random start then analyzed using Shannon Wiener index. The results obtained were found 22 tree species included in 11 families with species diversity index (H') of 2.707 and 40 bird species belonging to 25 families with species diversity index (H') of 2.794. The diversity of tree and bird species is classified as medium. The results of the analysis using the Pearson correlation between the diversity of tree with bird species obtained that there was no relationship between the two. Based on these results, riparian zones in urban areas need to be maintained and improved in quality so that the diversity of tree and bird species increases so as to create a stable ecosystem.

scholarly journals Bird Diversity Unconsciously Increases People’s Satisfaction with Where They Live

Land ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 153
Author(s):  
Lauren Hepburn ◽  
Adam C. Smith ◽  
John Zelenski ◽  
Lenore Fahrig
Keyword(s):  
Urban Areas ◽  
Bird Species ◽  
Canopy Cover ◽  
Bird Community ◽  
Well Being ◽  
Tree Canopy ◽  
Tree Cover ◽  
Bird Diversity ◽  
Neighbourhood Satisfaction ◽  
Tree Canopy Cover

There is growing evidence that exposure to nature increases human well-being, including in urban areas. However, relatively few studies have linked subjective satisfaction to objective features of the environment. In this study we explore the links among objective environmental features (tree cover, water, and bird diversity) and subjective judgements of satisfaction. We surveyed residents of Ottawa, Canada (n = 1035) about their satisfaction with their local neighbourhoods. We then compared the survey responses to measures of nature near their homes, including bird diversity (number of bird species), tree canopy cover, and distance to water. After controlling for effects of income and subjective happiness, residents’ neighbourhood satisfaction was positively related to the number of bird species nearby, even before participants were prompted to consider nature. Residents’ appreciation of their local neigbourhood relative to others also increased with tree canopy cover and nearness to water. Unsolicited comments from participants following the survey indicated that while residents consciously appreciate trees and water, the relationship between bird diversity and neighbourhood satisfaction appears to be unconscious; very few of the participants mentioned birds. Based on these results, we speculate that a diverse local bird community may provoke feelings of satisfaction through their presence, activity, and songs. Our results create a compelling argument for city planners and individual residents to maintain bird-friendly spaces in urban areas.

scholarly journals Green areas in an urban area and provision of ecosystem services: a bibliometric and integrative review

2021 ◽  
Vol 14 (Supl. 2) ◽  
pp. 1-15
Author(s):  
Maycon Jorge Ulisses Saraiva Farinha ◽  
André Geraldo Berezuk ◽  
Luciana Virginia Mario Bernardo
Keyword(s):  
Ecosystem Services ◽  
Urban Planning ◽  
Urban Areas ◽  
Well Being ◽  
Physical And Mental Health ◽  
Green Areas ◽  
Man And Nature ◽  
Bibliometric Review ◽  
Process Of Urbanization

The process of urbanization is accomplished by changes in land use, that is, by the interaction between man and nature, so that there is a common loss of green areas in cities. However, the need and importance of green areas inside urban areas has been emphasized in order to provide quality to the provision of ecosystem services. Such services favor the quality of life and human well-being of people living in urban areas. Thus, nature-based solution practices have been encouraged as a form of innovation for urban planning and to overcome problems in cities. An integrative and bibliometric review on urban green areas and ecosystem service provision was proposed from 2009 to 2019. Among the results, there is a growing interest in the topic. There is recognition of the importance of green areas for population needs regarding human physical and mental health. In addition, the need for public actions in favor of urban planning involving the issue is recognized in order to provide equal access to existing areas and/or in areas that will be created.

scholarly journals Study of changes in urban planning in the revision of the city plan for Campos dos Goytacazes

2021 ◽  
Author(s):  
Ronaldo de Sousa Araújo ◽  
Raphael Paixão Cardoso ◽  
Zélia Maria Peixoto Chrispim
Keyword(s):  
Urban Planning ◽  
Urban Areas ◽  
Conservation Areas ◽  
Green Area ◽  
The Social ◽  
Green Areas ◽  
City Plan ◽  
The City ◽  
Qualitative Changes ◽  
Road System

Changes in urban planning resulting from the process of reviewing the cityplan for Campos dos Goytacazes-RJ were the object of this work. The objective of this research was to verify changes in land use legislation due to the revision of the 2008cityplan considering Araújo's proposal (2018), especially for the macro road system and for green areas in urban areas. In the methodological process, bibliographic and documentary data such as laws and maps were collected, an updated bibliographic review was carried out, and comparisons of maps and laws were made. It is noteworthy that due to the social distance caused by the Covid-19 coronavirus pandemic, the research was carried out remotely using the Google Classroom/Meet platform. The results indicated that the new urban legislation significantly expanded the macro road system and the green areas of preservation in the municipal urban area, in line with Araújo's proposal, with emphasis on the creation of the environmental protection road, which will enable the population's access to the green conservation areas that have been disorderly occupied over time. It was concluded that the revision of the Campos dos Goytacazescityplan allowed for quantitative and qualitative changes in the macro road system and in the city's green area system in a positive way.

scholarly journals The Sensitivity of Urban Heat Island to Urban Green Space—A Model-Based Study of City of Colombo, Sri Lanka

Atmosphere ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 151 ◽  
Author(s):  
Dikman Maheng ◽  
Ishara Ducton ◽  
Dirk Lauwaet ◽  
Chris Zevenbergen ◽  
Assela Pathirana
Keyword(s):  
Sri Lanka ◽  
Vegetation Cover ◽  
Urban Areas ◽  
Green Space ◽  
Urban Green Space ◽  
Urban Green ◽  
Suburban Areas ◽  
Green Areas ◽  
Urban Heat ◽  
The Impact

Urbanization continues to trigger massive land-use land-cover change that transforms natural green environments to impermeable paved surfaces. Fast-growing cities in Asia experience increased urban temperature indicating the development of urban heat islands (UHIs) because of decreased urban green space, particularly in recent decades. This paper investigates the existence of UHIs and the impact of green areas to mitigate the impacts of UHIs in Colombo, Sri Lanka, using UrbClim, a boundary climate model that runs two classes of simulations, namely urbanization impact simulations, and greening simulations. The urbanization impact simulation results show that UHIs spread spatially with the reduction of vegetation cover, and increases the average UHI intensity. The greening simulations show that increasing green space up to 30% in urban areas can decrease the average air temperature by 0.1 °C. On the other hand, converting entire green areas into urban areas in suburban areas increases the average temperature from 27.75 °C to 27.78 °C in Colombo. This demonstrates the sensitivity of UHI to vegetation cover in both urban and suburban areas. These seemingly small changes are average grid values and may indicate much higher impacts at sub-grid levels.

scholarly journals Bird diversity, composition and response during COVID-19 in an urban landscape, Jamalpur, Bangladesh

2021 ◽  
Vol 30 (2) ◽  
pp. 261-274
Author(s):  
Ashikur Rahman Shome ◽  
M Firoj Jaman ◽  
Md Fazle Rabbe ◽  
Md Mahabub Alam
Keyword(s):  
Relative Abundance ◽  
Urban Areas ◽  
Urban Landscape ◽  
Bird Species ◽  
Summer Season ◽  
Free Movement ◽  
Bird Diversity ◽  
The World ◽  
Pycnonotus Cafer ◽  
Resident Bird

The world has been encountering a COVID-19 pandemic since late 2019. The world’s people have also witnessed the free movement of wildlife, even in many urban areas in some countries during the imposed lockdown. We conducted research on the birds in the urban landscape of Jamalpur Sadar upazila from March 2020 to October 2020 during this pandemic situation. A total of 134 species of birds with 4338 individuals were recorded during the study period. The number of resident bird species was the maximum (115 species, 85.82%) compared to migrants. The highest number of birds was observed (120 species, 89.55%) and counted 2278 individual birds 52.51%) in the summer season. It was observed that the highest diversity of birds (89 species, 65.92%) was in March. The tree was the most (94 species, n = 2502) used microhabitat by birds in the study area. Among all birds, Pycnonotus cafer was the most abundant bird species with the highest relative abundance (6.11%). Some bird species (e.g. Metopidius indicus, Anastomus oscitans, Amaurornis phoenicurus, Streptopelia tranquebarica, Lonchura malacca) were frequently observed in the urban landscape of the study area during the pandemic. Proper management and awareness creation are essential for the conservation of the bird species in this area. Dhaka Univ. J. Biol. Sci. 30(2): 261-274, 2021 (July)

scholarly journals Self-organizing map (SOM) for species distribution modelling of birds species at Kenyir landscape

2019 ◽  
Vol 9 (6) ◽  
pp. 5235
Author(s):  
Salwana Mohamad Asmara ◽  
Gertrude David ◽  
Mohd Tajuddin Abdullah ◽  
Wan Isni Sofiah Wan Din ◽  
Danakorn Nincarean a/l Eh Phon ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Species Distribution ◽  
Linear Correlation ◽  
Bird Species ◽  
Habitat Characteristics ◽  
Bird Diversity ◽  
Self Organizing Map ◽  
Large Dataset ◽  
Non Linear ◽  
Self Organizing

Identifying which biodiversity species are more dominant than others in any area is a very challenging task. This is because of the abundant of biodiversity species that may become the majority species in any particular region. This situation create a large dataset with a complex variables to be analysed. Moreover, the responds of organisms and environmental factors are occurred in a non-linear correlation. The effort to do so is really important in order to conserve the biodiversity of nature. To understand the complex relationships that exist between species distribution and their habitat, we analysed the interactions among bird diversity, spatial distribution and land use types at Kenyir landscape in Terengganu, Malaysia by using artificial neural network (ANN) method of self-organizing map (SOM) analysis. SOM performs an unsupervised and non-linear analysis on a complex and large dataset. It is capable to handle the non-linear correlation between organism and environmental factors because SOM identifies clusters and relationships between variables without the fixed assumptions of linearity or normality. The result suggested that SOM analysis was suited for understanding the relationships between bird species assemblages and habitat characteristics.

A cross-continental look at the patterns of avian species diversity and composition across an urbanisation gradient

2015 ◽  
Vol 42 (7) ◽  
pp. 554 ◽  
Author(s):  
Barbara Clucas ◽  
John M. Marzluff
Keyword(s):  
Species Richness ◽  
Species Composition ◽  
Urban Areas ◽  
Gradient Methods ◽  
Bird Species ◽  
Bird Diversity ◽  
Biological Traits ◽  
Bird Abundance ◽  
Bird Feeders ◽  
Urbanisation Gradient

Context As humans become increasingly urban, the need for conservation of nature in cities increases and requires an understanding of the patterns and processes of urban ecosystems. In particular, because humans are the most dominant species in urban areas, understanding the role humans play in these ecosystems (direct and indirect) will be of primary importance. Aims We examine the diversity and composition of bird species across an urbanisation gradient in two cities (Berlin, Germany, and Seattle, Washington, USA). We determine the degrees of species urban tolerance and examine how certain biological traits of species, namely, diet, whether or not species use bird feeders, nest sites and innovation rate, characterise species urban tolerance. Finally, we determine whether human provisioning (bird feeders and nest boxes) influences what types of species persist across the urbanisation gradient. Methods We surveyed bird abundance and species richness using point counts and surveyed human provisioning by conducting door-to-door interviews of residents across an urbanisation gradient in Berlin and Seattle. Key results We found that patterns of species richness were similar in both cities, but that species composition in Berlin changed less across the urbanisation gradient than it did in Seattle. The majority of birds in Berlin were urban tolerant, whereas in Seattle, they were moderately urban tolerant and intolerant. A cluster analysis revealed that, in general, in Berlin, omnivorous, open-nesting birds that use bird feeders and have relatively high innovation rates tended to be urban tolerant. In Seattle, birds that were mostly omnivorous, nested in open cups, and used bird feeders tended to be moderately urban tolerant and they were influenced by provisioning of food by humans. Conclusion Urbanisation and human interactions with birds can act as ecological filters, favouring certain bird species that can lead to varying species compositions across an urban gradient. These differences in species composition across the gradient may be more noticeable in younger cities than in older cities where the filtering process has been occurring for longer time. Implications By providing a variety of habitats and supplementing natural foods and nesting places, urban planners and residents can help conserve bird diversity in urban areas.

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