| Fungal succession in decomposing woody debris across a tropical forest disturbance gradient | |
Dossa, Gbadamassi G. O.; Yang, Yun-Qiang; Hu, Weiming4; Paudel, Ekananda5; Schaefer, Douglas; Yang, Yong-Ping ; Cao, Kun-Fang; Xu, Jian-Chu; Bushley, Kathryn E.; Harrison, Rhett D.
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| 2021 | |
| Source Publication | SOIL BIOLOGY & BIOCHEMISTRY
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| ISSN | 0038-0717 |
| Volume | 155Issue:-Pages:- |
| Abstract | Fungi decompose woody debris, an important carbon pool in forests. Fungal community structure is expected to vary according to the wood species, habitats and extent of abiotic disturbance, which have consequences for carbon cycling in tropical forests. Here we examined the effects of fungal diversity and composition on woody debris decomposition rates and sought potential mechanisms to explain an observed lack of difference in decomposition rates across a disturbance gradient in a tropical montane rainforest in Xishuangbanna, SW China. We measured wood specific gravity (WSG) loss from 280 logs of Litsea cubeba and Castanopsis mekongensis over 3 years and monitored fungal communities from 418 samples using next-generation sequencing after 0, 18 and 36 months field exposure. Wood species and termite presence determined changes in fungal diversity through time. Overall there was a peak in fungal diversity at 18 mo, suggesting an initial period of colonization followed by a period of increasingly competitive interactions leading to decreased diversity. Litsea logs, which had relatively low initial WSG and thinner bark, harbored higher fungal diversity. Shared fungal OTUs between wood species peaked at 18 mo (similar to 50%). However, fungal diversity was not a significant predictor of WSG loss. An effect of habitat on fungal community composition suggests that functional replacement explains the similar decay rates across the disturbance gradient. In addition, the proportions of saprotroph and white-rot fungi increased through time regardless of wood species. Termite presence reduced WSG loss, but the effect was mediated via the abundance of soft rot fungi. Our results suggest that changes in functional traits, rather than fungal species diversity, may better explain variation in WSG loss. Future studies should investigate roles of fungal functional traits and rot types, particularly those of Ascomycete fungi, whose roles in wood decay are still poorly characterized. |
| Keyword | Carbon cycle Coarse woody debris Decomposition Fungi Ecosystem function Landscape Tropical forest Wood density |
| Subject Area | Agriculture |
| DOI | 10.1016/j.soilbio.2021.108142 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000626605700001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/12165 |
| Collection | 2012年后新成立研究组 |
| Affiliation | 1.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China 2.Dossa, Gbadamassi G. O.] Chinese Acad Sci, Ctr Plant Ecol, Core Bot Gardens, Mengla 666303, Yunnan, Peoples R China 3.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia KLPB, Kunming 650201, Yunnan, Peoples R China 4.World Agroforestry Ctr, East & Cent Asia Reg Off, Kunming 650201, Yunnan, Peoples R China 5.Univ Florida, Entomol & Nematol Dept, Gainesville, FL USA 6.Nepal Acad Sci & Technol, Khumaltar, Lalitpur, Nepal 7.Guangxi Univ, Plant Ecophysiol & Evolut Grp, State Key Lab Conservat & Utilizat Subtrop Agrobi, Nanning 530004, Guangxi, Peoples R China 8.Guangxi Univ, Coll Forestry, Nanning 530004, Guangxi, Peoples R China 9.Bushley, Kathryn E.] Univ Minnesota, Dept Plant & Microbial Biol, St Paul, MN 55108 USA 10.Harrison, Rhett D.] World Agroforestry Ctr, 13 Elm Rd, Lusaka, Zambia |
| Recommended Citation GB/T 7714 | Dossa, Gbadamassi G. O.,Yang, Yun-Qiang,Hu, Weiming,et al. Fungal succession in decomposing woody debris across a tropical forest disturbance gradient[J]. SOIL BIOLOGY & BIOCHEMISTRY,2021,155(-):-. |
| APA | Dossa, Gbadamassi G. O..,Yang, Yun-Qiang.,Hu, Weiming.,Paudel, Ekananda.,Schaefer, Douglas.,...&Harrison, Rhett D..(2021).Fungal succession in decomposing woody debris across a tropical forest disturbance gradient.SOIL BIOLOGY & BIOCHEMISTRY,155(-),-. |
| MLA | Dossa, Gbadamassi G. O.,et al."Fungal succession in decomposing woody debris across a tropical forest disturbance gradient".SOIL BIOLOGY & BIOCHEMISTRY 155.-(2021):-. |
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