Nitrogen and phosphorus addition interactively affected the abundance of soil nematodes in a Tibetan alpine meadow
There has been a significant increase in atmospheric nitrogen (N) and phosphorus (P) deposition since the Industrial Revolution, profoundly affecting the structure and function of terrestrial ecosystems. Nevertheless, the interactive effects of N and P enrichment on soil nematode community compositi...
में बचाया:
| मुख्य लेखकों: | , , , , , , , , , , |
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| स्वरूप: | लेख |
| भाषा: | अंग्रेज़ी |
| प्रकाशित: |
Elsevier
2025-09-01
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| श्रृंखला: | Global Ecology and Conservation |
| विषय: | |
| ऑनलाइन पहुंच: | http://www.sciencedirect.com/science/article/pii/S2351989425002938 |
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| सारांश: | There has been a significant increase in atmospheric nitrogen (N) and phosphorus (P) deposition since the Industrial Revolution, profoundly affecting the structure and function of terrestrial ecosystems. Nevertheless, the interactive effects of N and P enrichment on soil nematode community composition remain poorly understood. Here, we conducted a three-year controlled experiment on the Tibetan Plateau to investigate the mechanisms underlying nutrient-induced shifts in soil nematode communities. Our findings revealed that nitrogen and phosphorus enhanced soil nematode community abundance by 36.76 % and 12.17 %, respectively. Furthermore, we identified significant N × P interactions affecting both nematode abundance and specific trophic groups. Phosphorus addition counteracted the negative effects of nitrogen addition on the abundance of nematode community (from −0.03–87.92 %), plant parasites (from −39.50–70.82 %), fungivores (from −15.62–20.66 %), and omnivores-predators (from −34.78–21.67 %), while enhancing the positive effects of nitrogen addition on bacterivores (from 31.47 % to 119.71 %). Soil nematode abundance variations in the meadow ecosystem were mainly regulated by changes in soil pH. These findings highlight the critical role of nutrient interactions in soil micro-food webs and underscore the need to integrate pH-mediated mechanisms into predictions on ecosystem responses to global change. |
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| आईएसएसएन: | 2351-9894 |