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Influence of smoke, heat and fire on germination of woody species occurring in the dry valleys of southwest China
Roeder, Mareike1; Yang, Weidong; Tomlinson, Kyle W.
2019
Source PublicationJOURNAL OF PLANT ECOLOGY
ISSN1752-9921
Volume12Issue:6Pages:931-940
AbstractAims Savannahs depend on fire for their persistence. Fire influences regeneration from seeds in several ways: it converts the environment into a more open space which can benefit the establishment of seedlings, and fire itself can also enhance germination by chemical and physical cues, such as smoke and heat. There is limited information as to how seed of Asian savannah species respond to fire, even though Asia has several dry vegetation types that are associated with fire. Our main question was whether fire enhances or triggers the germination of woody species occurring in southwest Chinese dry valleys, which have savannah vegetation. Methods We conducted tests with heat (80 degrees C) and smoke solution treatments, and tests with real fire by burning grass on top of sand trays containing seeds. We tested 35 species, including savannah species, and gully and forest species. Depending on seed availability, not all species were tested for all treatments. Twenty-six species had total germination >4% and these were used for analysis. Important Findings Heat increased germination of three species (strongest reaction: Dodonaea viscosa), smoke increased germination of five species (strongest reaction: Calotropis gigantea). Both treatments decreased germination for five and seven species, respectively. Real fire was detrimental for most species, except for D. viscosa, which is known to respond positively to heat shock. Even though fire-related cues were not a trigger for germination for most species in our study, fire could still be crucial for regeneration by competition release.
Keywordsmoke water burning biomass germination time Dodonaea viscosa Calotropis gigantea seed mass water content dark germination
Subject AreaPlant Sciences ; Ecology ; Forestry
DOI10.1093/jpe/rtz030
Indexed BySCI
Language英语
WOS IDWOS:000503278500002
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/11596
Collection2012年后新成立研究组
Affiliation1.[Roeder, Mareike; Yang, Weidong; Tomlinson, Kyle W.] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Ctr Integrat Conservat, Mengla 666303, Yunnan, Peoples R China
2.Karlsruhe Inst Technol, Inst Floodplain Ecol, Josefstr 1, D-76437 Rastatt, Germany
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GB/T 7714
Roeder, Mareike,Yang, Weidong,Tomlinson, Kyle W.. Influence of smoke, heat and fire on germination of woody species occurring in the dry valleys of southwest China[J]. JOURNAL OF PLANT ECOLOGY,2019,12(6):931-940.
APA Roeder, Mareike,Yang, Weidong,&Tomlinson, Kyle W..(2019).Influence of smoke, heat and fire on germination of woody species occurring in the dry valleys of southwest China.JOURNAL OF PLANT ECOLOGY,12(6),931-940.
MLA Roeder, Mareike,et al."Influence of smoke, heat and fire on germination of woody species occurring in the dry valleys of southwest China".JOURNAL OF PLANT ECOLOGY 12.6(2019):931-940.
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