Taxonomic, Phylogenetic and Functional Diversity of Bird Assemblages in Urban Green Spaces: Null Model Analyses, Temporal Variation and Ecological Drivers

Frontiers in Ecology and Evolution, Год журнала: 2022, Номер 9

Опубликована: Янв. 20, 2022

Urban expansion is a pervasive driver of biodiversity loss. To understand the effects urbanization on diversity, we investigated response bird taxonomic, phylogenetic, and functional diversity to urban green spaces’ characteristics in thirty-one spaces Mexico City. Selected sites encompassed variation environmental factors along transformation gradient, from natural protected areas landscaped parks. Bird observations were conducted during winter (non-breeding season), spring (dry breeding summer (wet season). We used multi-model inference assess relationship space area, shape, isolation, tree richness, habitat vegetation cover with species Faith’s phylogenetic richness. calculated standardized effect sizes null models structure. registered 91 belonging 28 families across all seasons. The number detected was largest decreased toward dry season, then wet season. found moderate strong positive richness Overall, structure communities neither clustered nor over-dispersed. However, few cases clustering, or both observed, they corresponded areas. Results showed predominant role area determining community while it did not influence Contrary our predictions, had negative this only whereas isolation structure, season winter, respectively. This study emphasizes use complementary measures together comparison between observed expected values get better insight into mechanisms by which affect

Язык: Английский

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Trends and status of urban green and urban green research in Latin America

Landscape and Urban Planning, Год журнала: 2022, Номер 227, С. 104536 - 104536

Опубликована: Авг. 27, 2022

Язык: Английский

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Artificial Green Corridors in an Andean City as Effective Support of Avian Diversity

Diversity, Год журнала: 2023, Номер 15(2), С. 302 - 302

Опубликована: Фев. 18, 2023

Ensuring connectivity in the countryside and cities is a key element of nature protection, allowing genetic fluxes between populations fragmented ecosystems. We tested hypothesis that artificial green corridors are effective for birds city Cochabamba (Bolivia). compared following aspects natural corridors, with generally preserved vegetation, to those constituting parks gardens matrix streets densely planted trees: species abundance richness, functional diversity, traits bird communities. used canonical redundancy analysis relate corridor type, noise, tree vegetation structure, diversity. also explanatory factors relationships traits. found most were shared types; nevertheless, had significant effects, being more common heavier having lower beak depth/mass. By contrast, noise-reflecting urbanization deeply affected all studied traits, indicating large shifts composition. In conclusion, seem reliable enough maintain at level almost comparable linear but noise limiting factor efficiency both types.

Язык: Английский

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Anthropogenic habitat modification causes nonlinear multiscale bird diversity declines

Ecography, Год журнала: 2023, Номер 2024(1)

Опубликована: Окт. 10, 2023

Anthropogenic habitat modification is a leading contributor to biodiversity change, but it unclear what factors, including scale, influence the magnitude of change. Changes in species richness and its scaling relationship across an anthropogenic gradient can be influenced by changes total number individuals each sample, abundance distribution, and/or spatial arrangement conspecific individuals. Here, we integrated continental‐scale citizen science data on bird occurrences contiguous United States – from eBird with analytical framework capable dissecting aforementioned components quantify diversity along landscape gradient. We found overall decline gradient, peak levels at low moderate modification. The change was greater gamma than alpha scales most strongly associated declining Spatial turnover lower higher impacted sites, this also due sampling fewer rather patchiness. Our results suggest that local‐scale management promote diversity, especially natural–rural–suburban interface. Management efforts (e.g. managing natural or preserving urban greenspaces against development) should focused creating, restoring, resources nesting habitat, foraging resources) necessary for large individuals, as primary

Язык: Английский

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Northwestern transboundary area of Bangladesh: a key to sustaining a quarter of the country’s avian species

Ornithology Research, Год журнала: 2024, Номер 32(1), С. 23 - 32

Опубликована: Янв. 17, 2024

Язык: Английский

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Ecological consequences of urbanization in Afrotropical bird communities: present and future prospects

Frontiers in Conservation Science, Год журнала: 2024, Номер 5

Опубликована: Дек. 10, 2024

Introduction Urbanization, characterized by the rapid expansion of human settlements and development, greatly impacts biodiversity, especially where developments are not guided proper environmental consideration. Methods We used data collected through citizen science projects under African Bird Atlas Project, based on standardized protocols to gather bird occurrence data. Species’ ecological traits, related foraging behavior, habitat speciality, body mass, were analyzed assess functional richness diversity (FD) represented Rao’s quadratic entropy. Geospatial data, including Global Human Settlement Layer Modification Index (HMI), along with probability urban up 2030, integrated examine impact urbanization using Bayesian models. Results Our findings reveal a marked decline in taxonomic richness, diversity, associated increasing modification, similar pattern observed gradient from mostly uninhabited areas cities. However, FD increased The relationship between HMI was nonlinear, showing an initial negative trend that became positive as increased. This suggests transition communities, generalist species thrive environments, potentially replacing specialized leading redundancy. Discussion Despite complex relationships observed, has predominantly Afrotropical communities. avian important implications for ecosystem functions services, crucial biodiversity well-being. research provides valuable insights into emphasizes importance preserving natural habitats amidst growing landscapes.

Язык: Английский

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Bird diversity and distribution in mosaic landscapes around Jammu, Jammu & Kashmir

Acta Ecologica Sinica, Год журнала: 2020, Номер 40(4), С. 323 - 338

Опубликована: Фев. 21, 2020

Язык: Английский

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Urbanization levels are associated with the start of the dawn chorus in vermilion flycatchers in Colombia

Ethology Ecology & Evolution, Год журнала: 2020, Номер 33(4), С. 377 - 393

Опубликована: Дек. 1, 2020

Increased urbanization leads to the modification of animal behavior, including start dawn chorus in birds. The beginning has been studied relation level urban noise and nocturnal artificial light oscine birds, with few studies suboscines. We evaluated a possible relationship between different levels suboscine, vermilion flycatcher (Pyrocephalus rubinus), seven locations city Armenia (Colombia). categorized each location according its percentage built structures, into low high levels. Observations were made during pre-dawn, starting at 00:00 hr. During visit we recorded maximum levels, night (ALAN) time first song. Males inhabiting started on average 101 min before sunrise, while males did so 38 before. Neither nor ALAN explained this difference. discuss that, for suboscines, another urban-related factor (ambient temperature) may be key driving onset chorus.

Язык: Английский

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The Good, the Bad, and the Ugly of Urbanization: Response of a Bird Community in the Neotropical Andes

Frontiers in Ecology and Evolution, Год журнала: 2022, Номер 10

Опубликована: Март 22, 2022

Urbanization constitutes one of the most aggressive drivers habitat and biodiversity loss worldwide. However, studies focused on determining response local to urbanization are still scarce, especially in tropical ecosystems. Urban ecosystems characterized by low biological productivity which turn leads a reduction biodiversity. responses should be species dependent. For instance, changes availability resources can favor certain with specific characteristics. We assessed effects process bird community city located Tropical Andes southern Ecuador, region widely recognized for its diversity endemism birds. selected three independent localities each four levels gradient study area (forest, forest-pasture, pasture, urban). In locality, we sampled visual auditory surveys along 1 km transects between 2016 2017. recorded total 1,257 individuals belonging 74 species. evaluated if richness abundance birds dependent trophic guild foraging strata. found significant decrease from forest urban sites. was Granivorous showed positive associated while insectivorous negative response. Insectivorous were more abundant sites decreased across gradient. that proportion using different strata drastically changed Forest exhibited variety habitats, but became simpler toward urbanized Our findings communities. The ugly: dramatic birds, is consistent cities characteristics ecological contexts. On other hand, guilds Some positively impacted show increases negatively impacted.

Язык: Английский

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Artificial Light at Night Drives Earlier Singing in a Neotropical Bird

Animals, Год журнала: 2022, Номер 12(8), С. 1015 - 1015

Опубликована: Апрель 13, 2022

Anthropogenic noise and artificial light at night (ALAN) can disrupt the morning singing routines of urban birds, however, its influence on tropical species remains poorly explored. Here, I assessed association between pollution with dawn chorus onset Saffron Finch (Sicalis flaveola) in a city Colombia. studied 32 sites comprised different conditions development based built cover. recorded time first song Finch, conspecific density measured anthropogenic ALAN using smartphone apps. The findings this study show that Finches living highly developed sang earlier than those occupying less urbanized sites. Unexpectedly, timing difference was related to instead noise, suggesting could drive bird. take advantage for signaling territorial ownership among neighbors. Future studies need assess Neotropical birds.

Язык: Английский

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