Nitrogen addition enhances the bottom-up effects in the detrital food web
Bottom-up forces play a critical role in structuring communities and trophic interactions in detritus-based food webs, yet the impact of global change factors on these forces has been seldom explored. Here, we investigated the bottom-up effects of N-addition concentrations and methods (canopy and un...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Global Ecology and Conservation |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2351989422003018 |
| _version_ | 1811250528147996672 |
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| author | Shengjie Liu Jocelyn E. Behm Yuanyuan Meng Wei Zhang Shangwen Xia Xiaodong Yang Shenglei Fu |
| author_facet | Shengjie Liu Jocelyn E. Behm Yuanyuan Meng Wei Zhang Shangwen Xia Xiaodong Yang Shenglei Fu |
| author_sort | Shengjie Liu |
| collection | DOAJ |
| description | Bottom-up forces play a critical role in structuring communities and trophic interactions in detritus-based food webs, yet the impact of global change factors on these forces has been seldom explored. Here, we investigated the bottom-up effects of N-addition concentrations and methods (canopy and understory addition of N) on the trophic structure of detrital food webs comprising three trophic levels (saprotrophic fungi, Collembola and spiders) in a temperate and subtropical forest. At both forests, we found that high N concentrations significantly increased the concentration of litter N and saprotrophic fungi, and also increased Isotomidae collembolan density, but did not cascade up to the spider predator level. In contrast, the N addition methods had no significant impact on any component of trophic structure at either forest. In conclusion, N concentration significantly influenced trophic structure by bottom-up effects. |
| first_indexed | 2024-04-12T16:06:23Z |
| format | Article |
| id | doaj.art-937024e7c3ba41c5bb7467e71e18acfe |
| institution | Directory Open Access Journal |
| issn | 2351-9894 |
| language | English |
| last_indexed | 2024-04-12T16:06:23Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Global Ecology and Conservation |
| spelling | doaj.art-937024e7c3ba41c5bb7467e71e18acfe2022-12-22T03:26:03ZengElsevierGlobal Ecology and Conservation2351-98942022-11-0139e02299Nitrogen addition enhances the bottom-up effects in the detrital food webShengjie Liu0Jocelyn E. Behm1Yuanyuan Meng2Wei Zhang3Shangwen Xia4Xiaodong Yang5Shenglei Fu6State Key Laboratory of Biocontrol, School of Life Sciences and School of Ecology, Sun Yat-sen University, Guangzhou 510275 China; CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan 666303, ChinaCenter for Biodiversity, Department of Biology, Temple University, Philadelphia, PA 19122, USAState Key Laboratory of Biocontrol, School of Life Sciences and School of Ecology, Sun Yat-sen University, Guangzhou 510275 China; CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan 666303, ChinaKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, ChinaCAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan 666303, ChinaCAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan 666303, ChinaLaboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, College of Environment and Planning, Henan University, Jinming Avenue, Kaifeng 475004, China; Corresponding author.Bottom-up forces play a critical role in structuring communities and trophic interactions in detritus-based food webs, yet the impact of global change factors on these forces has been seldom explored. Here, we investigated the bottom-up effects of N-addition concentrations and methods (canopy and understory addition of N) on the trophic structure of detrital food webs comprising three trophic levels (saprotrophic fungi, Collembola and spiders) in a temperate and subtropical forest. At both forests, we found that high N concentrations significantly increased the concentration of litter N and saprotrophic fungi, and also increased Isotomidae collembolan density, but did not cascade up to the spider predator level. In contrast, the N addition methods had no significant impact on any component of trophic structure at either forest. In conclusion, N concentration significantly influenced trophic structure by bottom-up effects.http://www.sciencedirect.com/science/article/pii/S2351989422003018CollembolaForest floorIsotomidaeLitter qualitySaprotrophic fungiSpider |
| spellingShingle | Shengjie Liu Jocelyn E. Behm Yuanyuan Meng Wei Zhang Shangwen Xia Xiaodong Yang Shenglei Fu Nitrogen addition enhances the bottom-up effects in the detrital food web Global Ecology and Conservation Collembola Forest floor Isotomidae Litter quality Saprotrophic fungi Spider |
| title | Nitrogen addition enhances the bottom-up effects in the detrital food web |
| title_full | Nitrogen addition enhances the bottom-up effects in the detrital food web |
| title_fullStr | Nitrogen addition enhances the bottom-up effects in the detrital food web |
| title_full_unstemmed | Nitrogen addition enhances the bottom-up effects in the detrital food web |
| title_short | Nitrogen addition enhances the bottom-up effects in the detrital food web |
| title_sort | nitrogen addition enhances the bottom up effects in the detrital food web |
| topic | Collembola Forest floor Isotomidae Litter quality Saprotrophic fungi Spider |
| url | http://www.sciencedirect.com/science/article/pii/S2351989422003018 |
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