Urbanization altered latitudinal patterns of bird diversity-environment relationships in the southern Neotropics

Filloy, Julieta; Grosso, Salvatore; Bellocq, M. Isabel

doi:10.1007/s11252-014-0429-1

Cited by 31 publications

(25 citation statements)

References 43 publications

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“…On the other hand, bird richness of town centres was comparable between the study countries, supporting a view that species richness does not decrease toward the poles in heavily urbanised areas (Jokimäki & Suhonen 1993;Jokimäki et al 1996Jokimäki et al , 2016Clergeau et al 2001;Filloy et al 2015; but see Murthy et al 2016). One reason for the lack of decreasing latitudinal trend in wintering species richness may be that only a few species are able to live in town centres, and these species are the same all over the world (Jokimäki et al 1996).…”

Section: Discussionsupporting

confidence: 58%

“…At the regional scale, increased urbanisation does not homogenise wintering bird communities, at least when town centres and suburban areas are compared within a particular biome. On the other hand, when urbanisation is compared between two countries located in different biomes, the homogenising force of urbanisation becomes evident (Clergeau et al 2001;Blair and Johnson 2008;Ferenc et al 2014;Filloy et al 2015;Murthy et al 2016;Leveau et al 2017;Vázquez-Reyes et al 2017), with communities of the more urbanised town centres being more similar to each other than the less urbanised suburban bird communities. There are several, not necessarily mutually exclusive, possible processes behind the observed similarity patterns.…”

Section: Discussionmentioning

confidence: 99%

“…Cassey et al 2008). Although the homogenising effect of urbanisation may be evident at large geographical scales (Clergeau et al 2001;Ferenc et al 2014;Filloy et al 2015;Ibáñez-Álamo et al 2016;Murthy et al 2016), some studies have suggested that it may disappear at smaller regional scales (Jokimäki & Kaisanlahti-Jokimäki 2003;Kühn & Klotz 2006;Marchetti et al 2006;Sorace & Gustin 2008;Luck & Smallbone 2011;Tryjanowski et al 2015).…”

Section: Scale Dependence Of Biotic Homogenisation By Urbanisation: Amentioning

confidence: 99%

“…However, the situation might be different in urban environments. Given that urbanisation may nullify the classic decreasing pattern of species richness towards the poles (Clergeau et al 2001;Filloy et al 2015Leveau et al 2017, but see Murthy et al 2016), the species loss provoked by urbanisation could be stronger toward the tropics (Filloy et al 2015;Leveau et al 2017). Therefore, a predominance of nestedness is expected at lower latitudes because urban bird community dissimilarity between habitats would be more likely to be explained by species loss.…”

Section: Scale Dependence Of Biotic Homogenisation By Urbanisation: Amentioning

confidence: 99%

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Scale dependence of biotic homogenisation by urbanisation: a comparison of urban bird communities between central Argentina and northern Finland

Leveau¹,

Jokimäki²,

Kaisanlahti‐Jokimäki³

2017

European Journal of Ecology

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Recent studies showed contrasting results about the homogenising force of urbanisation on bird community composition at large and regional scales. We studied whether urbanisation promotes the homogenisation of wintering bird communities and if this varies when comparing towns located within a specific region and towns located in two different biomes of two countries. We used both similarity indices based on the presence/absence data and the abundance data in comparing communities. Processes governing bird community dissimilarity between urbanisation levels were examined with the partitioning of Sörensen index in species turnover and nestedness. We made bird surveys in town centres and suburban habitats of three cities located in the Pampean region of Argentina and in the boreal region of Finland using a single-visit study plot method. Rarefacted species richness did not differ amongst the town centres between the countries, but it was higher in the suburban areas of Argentina than in Finland. At the country-level comparison, we found a higher similarity amongst the town centres than amongst the suburban areas; whereas at the regional comparison, similarity between town centres was comparable to the similarity between suburban areas. The use of an abundance-based index produced a higher similarity between town centre communities of both countries than when using a presence-based index. The dissimilarity between habitats in Argentina was related to nestedness and to species turnover in Finland. Our results indicate that urban-based biotic homogenisation of bird communities is dependent on the scale used, being more evident when comparing cities of different biomes where the same and abundant bird species, such as sparrows and doves, dominate. At the regional scale, quite a high beta-diversity can still be found within urban habitats. Processes of community dissimilarity between urban habitats may differ according to the regional pool of species, being more related to nestedness toward the tropics.

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Section: Discussionsupporting

confidence: 58%

Section: Discussionmentioning

confidence: 99%

Section: Scale Dependence Of Biotic Homogenisation By Urbanisation: Amentioning

confidence: 99%

Section: Scale Dependence Of Biotic Homogenisation By Urbanisation: Amentioning

confidence: 99%

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Scale dependence of biotic homogenisation by urbanisation: a comparison of urban bird communities between central Argentina and northern Finland

Leveau¹,

Jokimäki²,

Kaisanlahti‐Jokimäki³

2017

European Journal of Ecology

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“…However, studies from the tropics are scarce, and for birds at least, there are few from developing countries (Marzluff et al 2001;Pautasso et al 2011), yet the developing world shows the highest rates of human population growth (United Nations Population Fund 2014), the highest rates of expected future urbanization of the human population (Cohen 2006), and most biodiversity hot-spots are in the developing world (Myers et al 2000). There is therefore the expectation that impacts on biodiversity due to urbanization are likely to be most marked in developing tropical countries (Filloy et al 2015), hence further studies in the developing world are essential in order to understand potential consequences of urbanization (Trimble and van Aarde 2014), and also to begin to formulate strategies that may allow increasing urbanization in a more sustainable way (e.g. Stott et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Trends in bird species richness, abundance and biomass along a tropical urbanization gradient

et al. 2016

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AcknowledgementsWe thank Lilian Twanza and Osman Mwebe, who also took part in some of the bird counts in Kampala, and to NatureUganda for data from the rural sites. We are also grateful to L. Bennun, J. Roberts, P. Robinson and J. Pierini for providing personal observations on scavenger populations in African cities, and to an anonymous referee whose constructive comments improved the manuscript. 3Abstract Impacts of urbanization on biodiversity are commonly studied using urbanization gradients which provide a space-for-time substitution in estimating consequences of urban expansion. Rates of urbanization and human population growth are high in tropical countries of the developing world, which also hold most of the world's biodiversity hot-spots, yet few studies have considered biodiversity trends along urban gradients in these regions. Bird communities across a gradient of nine sites in Uganda, from the city centre of Kampala to outlying rural locations, were studied over a six year period. These sites were ordered along an urbanization gradient using Principle Components Analysis based on habitat variables estimated at each site. Bird species richness showed a decrease from rural to urban sites, a trend especially evident in forest birds. There was no clear pattern in total abundance, total biomass or biomass per individual along the gradient. However, this latter result was heavily influenced by a colony of Marabou Storks at one site.When this species was omitted, there was evidence of a positive trend with urbanization, showing that as species richness decreased, the bird community was increasingly dominated by larger species with increasing urbanization, which were mainly scavengers able to exploit human refuse. These results provide further support for the negative impacts of urbanization on species richness, but also demonstrate trends in abundance and biomass are variable across different regions. In particular, the increasing dominance of larger species in urban areas may be relevant to certain geographic and/or socioeconomic contexts.

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The socioeconomic status of cities covaries with avian life‐history strategies

et al. 2022

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Cities are the planet's newest ecosystem and thus provide the opportunity to study community formation directly following major permanent environmental change. The human social and built components of environments can vary widely in different cities, yet it is largely unknown how features of cities covary with the traits of colonizing species despite humans being the ultimate cause of environments and disturbances in cities. We constructed a dataset from open-source data comprised of 13,502 breeding season observations of 213 passerine species observed in 551 Census-defined urban areas across the United States. We found that as a city became more compact with less sprawl it tended to support more migratory species and species with lower body mass, shorter lifespans, and larger clutches. We also found that species had lower body mass in cities with higher median income, and higher body mass in highly populated cities. Our results highlight the complexity of humandominated urban ecosystems, where human socioeconomic actions and everyday activities intermix leading to structurally heterogeneous environments that support the colonization of some species over others.

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Urbanization altered latitudinal patterns of bird diversity-environment relationships in the southern Neotropics

Cited by 31 publications

References 43 publications

Scale dependence of biotic homogenisation by urbanisation: a comparison of urban bird communities between central Argentina and northern Finland

Scale dependence of biotic homogenisation by urbanisation: a comparison of urban bird communities between central Argentina and northern Finland

Trends in bird species richness, abundance and biomass along a tropical urbanization gradient

The socioeconomic status of cities covaries with avian life‐history strategies

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