Urbanization simplifies soil nematode communities and coincides with decreased ecosystem stability

Gong, Xin; Qiao, Zhihong; Yao, Haifeng; Zhao, Dan; Eisenhauer, Nico; Scheu, Stefan; Liang, Chao; Liu, Manqiang; Zhu, Yong-Guan; Sun, Xin

doi:10.1016/j.soilbio.2023.109297

Cited by 3 publications

(4 citation statements)

References 52 publications

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“…However, this does not lead to overarching declines in nematode abundance; rather, some trophic groups decline while others thrive (Li et al, 2022;Gong et al, 2024).…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…Increasingly impervious substrates in cities (Parris, 2016) may deprive these of habitat critical for their life cycle. Where habitat is available, soil nematode communities are profoundly altered by urbanisation, like other taxa (Li et al, 2022; Gong et al, 2024). However, this does not lead to overarching declines in nematode abundance; rather, some trophic groups decline while others thrive (Li et al, 2022; Gong et al, 2024).…”

Section: Discussionmentioning

confidence: 99%

“…Where habitat is available, soil nematode communities are profoundly altered by urbanization, like other taxa (Li et al, 2022; Gong et al, 2024). However, this does not lead to overarching declines in nematode abundance; rather, some trophic groups decline while others thrive (Li et al, 2022; Gong et al, 2024). Unfortunately, detailed information on nematodes parasitizing animals is typically lacking from these analyses; soil sampling specifically targeting parasitic nematodes (Jaffuel et al, 2019) would be here particularly useful.…”

Section: Discussionmentioning

confidence: 99%

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UrbanCepaea nemoralissnails are less likely to have nematodes trapped within their shells

Dahirel,

Reyné,

De Wolf

et al. 2024

Preprint

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Urbanisation is a major human-induced environmental change which can impact not only individual species, but also the way these species interact with each other. As a group, terrestrial molluscs interact frequently with a wide diversity of parasites, yet the way these interactions vary across space and in response to environmental pressures is poorly documented. In this study we leveraged a recently discovered defence mechanism, by which snails trap parasitic nematodes in their shells, to explore how snail-nematodes interactions may vary in response to city life. We examined shells from the generalist snailCepaea nemoralissampled in three urban areas in Belgium for trapped nematodes, and attempted to link this to urbanisation and shell phenotypic traits. We found that even a small degree of urbanisation led to large decreases in the rates of shell encapsulation, and that larger snails were more likely to contain trapped nematodes. However, we found no evidence that shell colour, which had been previously linked to immune function, was correlated to encapsulation rates. We discuss how between-population variation in encapsulation rates can result from urbanisation-induced changes on the nematodes side, the snail side, or both, and suggest potential tests for future studies aiming to disentangle these mechanisms.

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“…However, this does not lead to overarching declines in nematode abundance; rather, some trophic groups decline while others thrive (Li et al, 2022;Gong et al, 2024).…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%