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Threshold Reaction of Soil Arthropods to Simulative Nitrogen Deposition in Urban Green Spaces
- Source :
- Frontiers in Ecology and Evolution, Vol 9 (2021)
- Publication Year :
- 2021
- Publisher :
- Frontiers Media S.A., 2021.
-
Abstract
- Sustained nitrogen (N) deposition has a wide-ranging impact on terrestrial ecosystems. However, still little attention has been paid to responses of urban soil fauna to the increasing N deposition. To clarify such effects on the soil properties and soil fauna in typical urban lawns (featuring Cynodon dactylon vegetation), a control experiment was conducted for 1 year, in which NH4NO3 was added as the external N source with four treatments of N addition: N0 (i.e., only water), N1 (50 kg N ha–1 yr–1), N2 (100 kg N ha–1 yr–1), N3 (150 kg N ha–1 yr–1). Results showed that N additions influence soil faunal communities in the urban lawns soil. The relative abundance of Oribatida increased with the N treatment level, partially replacing the more sensitive Collembola. Significant differences in the Shannon-Wiener and Margalef indices (p < 0.01) supported this statement. Although higher doses of N addition showed adverse effects on soil fauna communities, low N inputs increased the soil fauna diversity and richness, especially at 5–10 cm depth. A threshold effect appears to exist: low N addition (
Details
- Language :
- English
- ISSN :
- 2296701X
- Volume :
- 9
- Database :
- Directory of Open Access Journals
- Journal :
- Frontiers in Ecology and Evolution
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.be310c69763b497c9175e3ce4d9f4b09
- Document Type :
- article
- Full Text :
- https://doi.org/10.3389/fevo.2021.711774