Urbanization causes biotic homogenization of woodland bird communities at multiple spatial scales

Global Change Biology, Journal Year: 2022, Volume and Issue: 28(21), P. 6152 - 6164

Published: Aug. 3, 2022

Urbanization is a major contributor to biodiversity declines. However, studies assessing effects of urban landscapes per se (i.e., disentangled from focal habitat effects) on across spatial scales are lacking. Understanding such scale-dependent fundamental preserve habitats along an urbanization gradient in way that maximizes overall biodiversity. We investigated the impact landscape communities woodland-breeding bird species individual (local scale) and multiple (regional cities, while controlling for quality sampled (woodlands). conducted point counts mapping trees, dead wood, shrubs 459 woodlands rural 32 cities Sweden. Responses were measured as local regional total diversity (γ), average site (α), between sites (β). also assessed what extent dissimilarities composition driven by nestedness or turnover. found had negative γ-, α-, β-diversity irrespective scale, both regarding all red-listed species. At levels due nestedness, is, lost with increased without being replaced. In contrast, at scale mostly Because there was no difference among gradient, we conclude systematically causes poorer more homogeneous adjacent natural habitats. high turnover fact several benefited demonstrates entire needed maintain maximally diverse communities.

Language: Английский

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Green infrastructures and ecological corridors shape avian biodiversity in a small French city

Urban Ecosystems, Journal Year: 2020, Volume and Issue: 24(3), P. 549 - 560

Published: Sept. 26, 2020

Language: Английский

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Long-term Christmas Bird Counts describe neotropical urban bird diversity

PLoS ONE, Journal Year: 2023, Volume and Issue: 18(2), P. e0272754 - e0272754

Published: Feb. 1, 2023

A significant gap in understanding the response of biodiversity to urban areas is lack long-term studies. Most information on birds comes from studies carried out northern hemisphere, and they include data that don´t exceed three years. Although short-term contribute knowledge about bird community diversity their spatial distribution areas, could be biased towards more conspicuous species. One few multi-temporal datasets available for Christmas Bird Count (CBC). Using annual CBC between 2001 2018 21 peri-urban sample sites assessed main cities Colombia, we identified analyzed trends cumulative communities as well distribution. We estimated comparative richness, number individuals counted, similarity, complementarity avifauna each city site based responses urbanization dietary guilds. almost a quarter species registered Colombia (464 1954). The representativeness obtained 18 years exceeds 84%, showing richness ranges 214 278 cities. showed wide variation sites. found dwellers, insectivorous granivorous with frugivores relegated sites, usually coinciding avoider Natural intra-urban wetlands parks were most important refuges maintained highest utilizer richness. Long-term inventories are fundamental determining consolidated distributional patterns. This established baseline decision-making applying recommendations allow reconciling growing demand need preserve native megadiverse Neotropical countries such Colombia.

Language: Английский

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Decline in forest bird species and guilds due to land use change in the Western Himalaya

Global Ecology and Conservation, Journal Year: 2021, Volume and Issue: 25, P. e01447 - e01447

Published: Jan. 1, 2021

Land use change is the most widespread driver of biodiversity loss in densely populated tropical countries. Biodiversity loss, turn, results changes functional guilds responsible for various forest ecosystem services. It thus necessary to understand extent and types guild alteration caused by land order facilitate sustainable policies. Here we study effects on bird species a human-dominated landscape Western Himalaya, India. We carried out systematic breeding-season surveys six within moist temperate forest: natural (protected) oak forest, degraded (lightly used) lopped (heavily pine cultivation built-up sites, two adjoining landscapes, over consecutive years. Our shows moderate drastic all modified comparison forest. Species composition diverged significantly from oak; this effect was highest sites least forests. Compositional uses occurred due partial replacement specialists with commensals open country species, whereas abundance generalists relatively constant across gradient. also find steep decline such as pollinators, insectivorous pest controllers have important implications conservation biodiverse mountain landscapes significant human imprint. In particular, (a) low faunal diversity monocultures urban (b) (50% or more) specialists, pollinators insectivores forests, urbanised sites; (c) potential refugia are findings that can be globally applied planning landscapes.

Language: Английский

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Urban gradient resolution matters! Avian diversity patterns in a boreal green city

Urban Ecosystems, Journal Year: 2025, Volume and Issue: 28(2)

Published: Feb. 8, 2025

Language: Английский

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The importance of unsealed areas in the urban core and periphery for bird diversity in a large central european city

Urban Ecosystems, Journal Year: 2023, Volume and Issue: 26(4), P. 1015 - 1028

Published: April 19, 2023

Abstract Although urbanization poses one of the largest threats for biodiversity, only few studies have so far examined its impact in large Central European cities. Our study aimed at investigating effects on bird diversity using two methods to describe urban environment. The first measure used degree sealing, portion traffic infrastructure, number floors tallest building a site scale (100-m radius), and distance from city center, while second relied land-cover data local (1000-m radius). We conducted surveys 761 sites across Hamburg. Bird was assessed as species richness, abundance, Shannon index. Additionally, evenness calculated. Both measures represented rural-to-urban gradient were negatively correlated with well evenness. At scale, sealing had strongest negative effect followed by infrastructure building. artificial surfaces proved effect, agricultural areas forests positively associated diversity. In general, models measuring showed higher associations results emphasize importance unsealed environment natural habitats periphery cities millions human inhabitants. Considering this future planning can help preserve biodiversity environment, increase development areas, thus improve living conditions people.

Language: Английский

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Built vs. Green cover: an unequal struggle for urban space in Medellín (Colombia)

Urban Ecosystems, Journal Year: 2024, Volume and Issue: 27(4), P. 1055 - 1065

Published: Jan. 16, 2024

Language: Английский

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The potential of bird diversity in the urban landscape for birdwatching in Java, Indonesia

Biodiversitas Journal of Biological Diversity, Journal Year: 2021, Volume and Issue: 22(4)

Published: March 11, 2021

Abstract. Kurnia I, Arief H, Mardiastuti A, Hermawan R. 2021. The potential of bird diversity in the urban landscape for birdwatching Java, Indonesia. Biodiversitas 22: 1701-1711. Birdwatching is a recreational activity observing birds wild with naked eye¸ using tools such as telescopes and binoculars, or listening to sounds. observation locations can be either natural landscapes diversity. However, dominance built spaces man-made vegetation differed from landscapes. This difference will affect composition found landscape. paper aimed analyze their birdwatching. research was conducted February April 2020 five cities Java (Bogor, Sukabumi, Bandung, Yogyakarta, Surabaya). Bird data were taken IPA method carried out 85 green open spaces. Total species 75 species, largest number Bogor (66 species), followed by Surabaya (36 Bandung (28 Sukabumi (26 Yogyakarta (19 species). highest richness each city are Botanical Gardens (53 Cikundul Agrotourism Area (18 Zoological Garden (21 Gembira Loka Zoo (14 Pakal City Forest (20 Commonly seen dominated generalist typical (e.g., Collocalia linchi, Passer montanus, Pycnonotus aurigaster). has positive correlation local area habitat A total 74 resident that throughout year objects. Only one migrant namely Merops philippinus.

Language: Английский

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The effect of artificial light on bat richness and nocturnal soundscapes along an urbanization gradient in an arid landscape of central Peru

Urban Ecosystems, Journal Year: 2021, Volume and Issue: 25(2), P. 563 - 574

Published: Oct. 13, 2021

Language: Английский

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Increased exposure of Colombian birds to rapidly expanding human footprint

Environmental Research Letters, Journal Year: 2022, Volume and Issue: 17(11), P. 114050 - 114050

Published: Nov. 1, 2022

Abstract Understanding and mapping anthropogenic threats on species distributions is a crucial task in conservation science to identify priority areas propose appropriate strategies. Yet, there big challenge quantify how these are associated with distribution patterns at multiple temporal scales. For birds, existing national global analyses have mostly focused forest specialists they tend consider only one time period. Here, we evaluated spatial changes human footprint within the of Colombian birds from 1970 2018, projected them into 2030. We show that widespread increases were common terrestrial birds. Endemic threatened been disproportionately affected by past their distribution, this trend will continue future. Several harboring high diversity forest-specialists remained relatively intact up 2018. However, our predictions significantly higher faster (>2% annual change) levels transformation Importantly, results suggest non-forest could be experiencing habitat quality declines just as significant those shown for Our mitigating negative effects bird habitats Colombia requires an array strategies range strict protection mixed management. These can serve inputs decision tools spatiotemporal variation anthropic under scenarios change.

Language: Английский

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