Urbanization alters the composition, but not the diversity and structure, of Neotropical savanna woody plant communities

Freitas, Érica Vanessa Durães de; Veloso, Maria das Dores Magalhães; Araújo, Walter Santos de

doi:10.1007/s12224-020-09366-4

Cited by 12 publications

(8 citation statements)

References 51 publications

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“…This means that the type and/or relative abundance of bacterial/archaeal taxa could be undergoing significant changes despite no net change in the number of bacterial/archaeal taxa [ 68 ]. Similar patterns were observed when studying the impact of urbanization on the woody plant communities in a neotropical savanna, where plant community composition, but not species richness, was significantly altered by urbanization [ 69 ]. Likewise, a previous study conducted in Manhattan showed that highly and lowly urbanized habitats had distinct soil bacterial community composition, yet had similar bacterial richness [ 14 ].…”

Section: Discussionsupporting

confidence: 67%

Changes in Soil Microbial Communities across an Urbanization Gradient: A Local-Scale Temporal Study in the Arid Southwestern USA

et al. 2021

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Urban development is one of the leading causes of biodiversity change. Understanding how soil microorganisms respond to urbanization is particularly important because they are crucial for the provisioning of ecosystem functions and services. Here, we collected monthly soil samples over one year across three locations representing an urbanization gradient (low-moderate-high) in the arid Southwestern USA, and we characterized their microbial communities using marker gene sequencing. Our results showed that microbial richness and community composition exhibited nonsignificant changes over time regardless of the location. Soil fungal richness was lower in moderately and highly urbanized locations, but soil bacterial/archaeal richness was not significantly different among locations. Both bacteria/archaea and fungi exhibited significant differences in community composition across locations. After inferring potential functional groups, soils in the highly urbanized location had lower proportions of arbuscular mycorrhizal fungi and soil saprotrophic fungi but had higher proportions of bacterial taxa involved in aromatic compound degradation, human pathogens, and intracellular parasites. Furthermore, ammonia-oxidizing bacteria were more abundant in the highly urbanized location, but ammonia-oxidizing archaea were more abundant in lowly and moderately urbanized locations. Together, these results highlight the significant changes in belowground microbial communities across an urbanization gradient, and these changes might have important implications for aboveground–belowground interactions, nutrient cycling, and human health.

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Section: Discussionsupporting

confidence: 67%

Changes in Soil Microbial Communities across an Urbanization Gradient: A Local-Scale Temporal Study in the Arid Southwestern USA

et al. 2021

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“…Urbanization is one of the main drivers of ecological, environmental and socio-economical change worldwide (Freitas et al, 2020). It is a central component of land-transformation processes and fundamental changes in land use and landscape pattern around the globe, especially in the developing countries.…”

Section: Introductionmentioning

confidence: 99%

“…It is a central component of land-transformation processes and fundamental changes in land use and landscape pattern around the globe, especially in the developing countries. The consequences of urbanization result in drastic changes to the biodiversity and composition of plant communities and even lead to species extinction (McKinney, 2006;Freitas et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Floristic composition of Jahangirnagar University Campus - A semi-natural area of Bangladesh

Khan

Sultana

Hossain

et al. 2021

Bangladesh J. Plant Taxon

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This study represents comprehensive taxonomic information on current floristic composition in the semi-natural campus area of Jahangirnagar University. This study reveals that this campus area harbours a total of 917 species belonging to 574 genera and 145 families of vascular plants. 70.34% of these species are wild and the rest are cultivated/planted. 63.79% of the species are native and 36.21% are exotic to Bangladesh. Pteridophytes and Gymnosperms are represented by 22 and 12 species, respectively, whereas, Angiosperms by 883 species. Magnoliopsida (dicotyledons) and Liliopsida (monocotyledons) are composed of 618 and 265 species, respectively. The family Poaceae with 89 species is the largest, which is followed by Fabaceae with 44 species and Asteraceae with 40 species. Most of the species are herbs (56.16%) and growing in diverse habitats. All species are economically or ecologically important, but mostly as medicinal, ornamental, fodder and forage, fruit, vegetable, timber and fuel wood. The study area houses 15 plant species, previously listed as threatened to Bangladesh. Thus, the study area is floristically rich in respect to its number of plant species belonging to different groups and its size. This area might serve as a campus-based excellent center of biodiversity conservation by strengthening the existing management and adopting necessary policies and strategies. Bangladesh J. Plant Taxon. 28(1): 27-60, 2021 (June)

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“…Recent evidence indicates that anthropogenic disturbances alter the composition (but not the diversity and structure) of Neotropical savanna woody plant communities (Freitas et al, 2020). Because of this, we hypothesized that under disturbance conditions facultative generalists may be restricted to a smaller range of resources (i.e., host species) dominant in the disturbed habitats, since modified plant communities have different species composition compared to natural communities (Freitas et al, 2020). Thus, human disturbance of habitats favors the dominance of these specialist herbivores locally, which decreases the average specialization of the remaining species.…”

Section: Discussionmentioning

confidence: 99%

“…By contrast, endophages tend to suffer stronger indirect negative effects, via changes in the species richness of host plants, from the anthropogenic modification of habitats (Araújo, Vieira et al, 2015), since they are more dependent on their host plants than exophages (Araújo, 2013). Changes in the composition of plant species are also frequent in modified environments (Freitas et al, 2020), which can affect the occurrence of herbivorous insects (Grandez-Rios et al, 2015). Because specialist species tend to be more sensible to anthropogenic disturbances, changes in species richness and composition can also result in altered plant-herbivore interaction networks in disturbed habitats (Pinho et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Plant–herbivore assemblages composed of endophagous and exophagous insects have different patterns of diversity and specialization in Brazilian savannas

Araújo

Oliveira

2021

Biotropica

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Plant-insect interactions can differ between endophagous and exophagous insect guilds, and this can influence the response patterns of these guilds to anthropogenic changes in natural habitats. We compared the species richness, abundance, and species-level specialization of plant-herbivore assemblages composed of distinct insect guilds in Neotropical savannas. Assemblages of chewing insects were the richest in species, and the gallers were the most abundant. Galling species were more specialized than other guilds, and sucking insects were more specialized than chewers.Our results show that insect guilds are similarly influenced by disturbance, which decreased species richness and increased specialization of insect species.

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Urbanization alters the composition, but not the diversity and structure, of Neotropical savanna woody plant communities

Cited by 12 publications

References 51 publications

Changes in Soil Microbial Communities across an Urbanization Gradient: A Local-Scale Temporal Study in the Arid Southwestern USA

Changes in Soil Microbial Communities across an Urbanization Gradient: A Local-Scale Temporal Study in the Arid Southwestern USA

Floristic composition of Jahangirnagar University Campus - A semi-natural area of Bangladesh

Plant–herbivore assemblages composed of endophagous and exophagous insects have different patterns of diversity and specialization in Brazilian savannas

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