Contrasting homogenization patterns of plant and collembolan communities in urban vegetable gardens

Joimel, Sophie; Schwartz, Christophe; Maurel, Noëlie; Magnus, Benjamin; Machon, Nathalie; Bel, Jérémie; Cortet, Jérôme

doi:10.1007/s11252-019-00843-z

Cited by 15 publications

(7 citation statements)

References 65 publications

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“…One of the main questions related to SUITMAs concerns biotic homogenization (McKinney and Lockwood, 1999). A previous study concerning soil Collembola, conducted in urban vegetable gardens, demonstrated that, contrary to plants, soil taxonomic, and functional Collembola communities remained quite dissimilar between three cities in France (Joimel et al, 2019). However, these homogenization patterns observed must now be compared to other land uses to obtain a global picture.…”

Section: Introductionmentioning

confidence: 99%

Functional and Taxonomic Diversity of Collembola as Complementary Tools to Assess Land Use Effects on Soils Biodiversity

et al. 2021

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Collembola have been proposed for several decades as a good model organisms to survey soil biodiversity; but most of the studies focused on taxonomic endpoints. The main objectives of this study are to compare the effects of the different land uses, including urban and industrial land uses, while using both collembolan functional and taxonomic biodiversity approaches. We collected data on 3,056 samples of Collembola communities across 758 sites in various land uses throughout France. The types of land use considered included all types of human activity from forestry to urban, industrial, traffic, mining and military areas, agricultural grassland, arable land, vineyards and urban vegetable gardens. In order to study functional and taxonomic biodiversity, we used community-weighted means, functional indices, species richness and density. When looking at collembolan functional diversity, urban and industrial soils appear clearly less diversified than when considering the taxonomic diversity. We suspect here a functional homogenization effect commonly reported in the literature for various organisms in urban ecosystems. Our study provides range of values for different taxonomic and functional indices of Collembola communities in a wide land use classification across France.

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Section: Introductionmentioning

confidence: 99%

Functional and Taxonomic Diversity of Collembola as Complementary Tools to Assess Land Use Effects on Soils Biodiversity

et al. 2021

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“…Yet, previous studies have highlighted the importance of soil characteristics including water availability and organic matter contents for the assemblage of plant communities in urban soils (Dana et al, 2002). In cities, specific constraints such as climatic conditions and human management of productive roofs can have an impact on floristic diversity, in addition to soil characteristics (Joimel et al, 2019). We showed that plant diversity was not correlated to soil biodiversity.…”

Section: Co-occurrence Between Organisms and Links With Green Roofs C...mentioning

confidence: 54%

“…Some of these results are consistent with the literature while others are more unexpected. Indeed, many studies reported the effects of soil pH, organic carbon and metal contents on Collembola (Joimel et al, 2019;Santorufo et al, 2015) and microorganisms (Hui et al, 2012;Huot et al, 2018;Wang et al, 2017) in non-urban soils.…”

Section: Co-occurrence Between Organisms and Links With Green Roofs C...mentioning

confidence: 99%

One green roof type, one Technosol, one ecological community

Joimel

Grard

Chenu

et al. 2022

Ecological Engineering

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“…On the other hand, areas not suited for development, such as hills and wetlands, are increasingly transformed into urban forests, recreation parks or other types of green infrastructures, which is expected to alleviate environmental problems, conserving biodiversity and maintaining the ecological functions of urban ecosystems (Jia et al 2018). Yet, the isolation of greenspaces due to constructions, roads and other paved urban areas is a global threat contributing to biodiversity loss and causing biotic homogenization (Joimel et al 2019;Piano et al 2020b). These changes likely also affect ecosystem functioning and services of urban greens (Liu et al 2019;Hong et al 2022), with a simplified food web structure (Buchholz et al, 2018;Piano, et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Urbanization and urban habitat fragmentation do not compromise soil food web complexity and conservation value

Wang

Zhang

Qiao

et al. 2023

Preprint

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Urbanization-induced environmental changes such as habitat fragmentation impacts arthropod assemblages and food web-related ecosystem functions, such as nutrient cycling, carbon storage and energy fluxes. Yet, we lack insight into how arthropod food webs are structured along urban fragmentation gradients. Here, we investigated the community composition and food web structure of litter-dwelling arthropods along fragmentation gradients (green median strip, urban park, urban forest and natural forest). We found the density of litter-dwelling arthropods in median strip and urban park to be two to four times higher than in urban and natural forests, with, as indicated by literature-based stable isotope values, 67% - 68% of the individuals comprising primary consumers (trophic level I) in median strip and urban park. Urban forests, reserved for biodiversity conservation, hosted the least arthropod density, taxa richness, biomass and body mass, but were colonized by a high number of specialist arthropods, e.g. Archaeognatha and Isoptera. Food webs were most simple in urban forest, but more complex in median strip and urban parks, i.e. open fragments, with abundant primary and secondary consumers including decomposers. Chilopoda and Araneae formed the apex predators in fragments and mostly consumed other predators of trophic level III. The biomass of decomposed litter on the soil surface as major resource of the soil animal community significantly correlated positively with the density of arthropods of trophic levels I, III and IV. Supporting the dominance of bottom-up forces, the density of adjacent trophic levels consistently correlated positively. Overall, our results suggest that small size urban fragments maintain a diverse community of arthropods forming complex food webs and thereby may contribute to conserving biodiversity and providing important ecosystem functions.

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Contrasting homogenization patterns of plant and collembolan communities in urban vegetable gardens

Cited by 15 publications

References 65 publications

Functional and Taxonomic Diversity of Collembola as Complementary Tools to Assess Land Use Effects on Soils Biodiversity

Functional and Taxonomic Diversity of Collembola as Complementary Tools to Assess Land Use Effects on Soils Biodiversity

One green roof type, one Technosol, one ecological community

Urbanization and urban habitat fragmentation do not compromise soil food web complexity and conservation value

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