DOI: 10.1016/j.foreco.2014.11.003
Scopus记录号: 2-s2.0-84912102523
论文题名: Bracken fern facilitates tree seedling recruitment in tropical fire-degraded habitats
作者: Gallegos S.C. ; Hensen I. ; Saavedra F. ; Schleuning M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 337 起始页码: 135
结束页码: 143
语种: 英语
英文关键词: Clusia
; Facilitation
; Forest recovery
; Litter
; Montane forest
; Pteridium arachnoideum
Scopus关键词: Conservation
; Deforestation
; Ecosystems
; Fires
; Tropics
; Vegetation
; Clusia
; Facilitation
; Forest recovery
; Litter
; Montane forests
; Pteridium arachnoideum
; Reforestation
; anthropogenic effect
; facilitation
; fern
; fire behavior
; forest management
; growth rate
; habitat conservation
; litter
; montane forest
; recruitment (population dynamics)
; seed dispersal
; seedling
; succession
; survival
; tropical forest
; Forest Litter
; Forestry
; Humidity
; Plants
; Seedlings
; Tropical Atmospheres
; Bolivia
; Pteridium aquilinum
; Pteridium arachnoideum
英文摘要: Tropical forest regeneration is hindered by human-induced fires. After deforestation by fires, Pteridium spp. (bracken fern) often colonizes and dominates the vegetation for long time periods, presumably inhibiting the succession. Tree species from mature forests are rare in the degraded areas, potentially due to the lack of seed dispersal and unfavourable abiotic conditions. Here, we experimentally assess the effect of bracken presence, in terms of litter and shade, on seedling recruitment of three native, shade-tolerant tree species in the tropical mountains of Bolivia. In a spatially blocked design at eight sites, we compared seedling recruitment, survival and growth three months and one year after sowing between experimental litter and vegetation treatments and among habitat types (forest interior, degraded habitats close and far from the edge) and species (. Clusia sphaerocarpa, Clusia lechleri and Clusia trochiformis). We found that species differed in their recruitment success and habitat preferences, but responded similarly to experimental treatments. Litter removal increased temperature and reduced humidity on the ground and vegetation removal increased canopy openness. Seedling recruitment was consistently reduced by litter and vegetation removal, and their interaction had a deleterious negative effect. Seedling survival and growth were also reduced by litter removal. Our results highlight the overlooked facilitative effects of bracken by ameliorating harsh abiotic conditions and increasing the probability of Clusia seedling recruitment and potentially other shade-tolerant tree species in degraded habitats. To enhance forest regeneration in fire-degraded areas, we recommend spreading seeds of shade-tolerant tree species into the bracken vegetation. This method is less costly and might be more efficient than previous methods that involved repeated bracken removal. Recruitment of late-successional species in the bracken vegetation is likely to promote the restoration of tropical forest; however, long-term studies are needed to test the success of such efforts. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65598
Appears in Collections: 影响、适应和脆弱性
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作者单位: Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Am Kirchtor 1, Halle, Germany; Bio. and Climate Research Centre (BiK-F) and oSenckenberg Gesellschaft für Naturforschung, Senckenberganlage 25, Frankfurt (Main), Germany; Herbario Nacional de Bolivia (LPB) - Instituto de Ecología - MNHN, Universidad Mayor de San Andrés, Campus Universitario Cota Cota, La Paz, Bolivia; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, Germany
Recommended Citation:
Gallegos S.C.,Hensen I.,Saavedra F.,et al. Bracken fern facilitates tree seedling recruitment in tropical fire-degraded habitats[J]. Forest Ecology and Management,2015-01-01,337