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Aims <p>Typhoons derive large amounts of green litter and potential resource pulse effect on soil fauna, for which substrate quality notoriously differs from the existing senesced litter. Despite the coexistence of these distinct litter types on the forest floor, the functional diversity effects of green and senesced litter on soil faunal feeding guilds remains unknown.</p> Methods <p>We determined the community-weighted mean (CWM) and functional dispersion (FDis) of litter traits for the mixture of green and senesced litter across five representative subtropical forests after typhoon Gaemi. Meanwhile, we identified litter-layer soil fauna and then classified them into predators, detritivores, fungivores, and herbivores.</p> Results <p>We found that acquisitive CWM traits related to litter specific leaf area (SLA), phosphorus (P), potassium (K), and aluminum (Al), as well as lower FDis related to litter moisture, nitrogen (N), P, and Al, both litter diversity traits promoted herbivores and predators diversity. In contrast, conservative CWM traits related to leaf dry matter content (LDMC), carbon (C), C/P, and calcium (Ca), as well as higher FDis related to LDMC, Ca, C/N, and sodium (Na), both litter diversity traits promoted detritivores and fungivores diversity.</p> Conclusions <p>Our concluded that litter CWM traits exerted stronger effects on soil fauna than FDis, with the former explained power ~20% more variation than the latter. This functional diversity effect declined from detritivores to fungivores, predators, and herbivores, highlighting the dominance of the resource mass-ratio effect in structuring soil faunal diversity. These findings provide a trait-based framework for predicting belowground diversity patterns in typhoon-prone subtropical forests.</p>

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Functional identity of typhoon-derived green litter overrides functional dissimilarity in reshaping litter faunal feeding guilds in a subtropical forest

  • 期刊论文

  • 发表日期：

    2026年6月22日

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  • Shuning Ma,
  • Lifeng Wang,
  • Qingjun Ma,
  • Ajuan Zhang,
  • Rui Cao,
  • Zhuang Wang,
  • Qin Wang,
  • Mei Qin,
  • Wanqin Yang

摘要

Aims

Typhoons derive large amounts of green litter and potential resource pulse effect on soil fauna, for which substrate quality notoriously differs from the existing senesced litter. Despite the coexistence of these distinct litter types on the forest floor, the functional diversity effects of green and senesced litter on soil faunal feeding guilds remains unknown.

Methods

We determined the community-weighted mean (CWM) and functional dispersion (FDis) of litter traits for the mixture of green and senesced litter across five representative subtropical forests after typhoon Gaemi. Meanwhile, we identified litter-layer soil fauna and then classified them into predators, detritivores, fungivores, and herbivores.

Results

We found that acquisitive CWM traits related to litter specific leaf area (SLA), phosphorus (P), potassium (K), and aluminum (Al), as well as lower FDis related to litter moisture, nitrogen (N), P, and Al, both litter diversity traits promoted herbivores and predators diversity. In contrast, conservative CWM traits related to leaf dry matter content (LDMC), carbon (C), C/P, and calcium (Ca), as well as higher FDis related to LDMC, Ca, C/N, and sodium (Na), both litter diversity traits promoted detritivores and fungivores diversity.

Conclusions

Our concluded that litter CWM traits exerted stronger effects on soil fauna than FDis, with the former explained power ~20% more variation than the latter. This functional diversity effect declined from detritivores to fungivores, predators, and herbivores, highlighting the dominance of the resource mass-ratio effect in structuring soil faunal diversity. These findings provide a trait-based framework for predicting belowground diversity patterns in typhoon-prone subtropical forests.