GSTDTAP  > 气候变化
DOI10.1111/gcb.13905
Functional traits determine tree growth and ecosystem productivity of a tropical montane forest: Insights from a long-term nutrient manipulation experiment
Baez, Selene1,2; Homeier, Juergen3
2018
发表期刊GLOBAL CHANGE BIOLOGY
ISSN1354-1013
EISSN1365-2486
出版年2018
卷号24期号:1页码:399-409
文章类型Article
语种英语
国家Ecuador; Germany
英文摘要

Trait-response effects are critical to forecast community structure and biomass production in highly diverse tropical forests. Ecological theory and few observation studies indicate that trees with acquisitive functional traits would respond more strongly to higher resource availability than those with conservative traits. We assessed how long-term tree growth in experimental nutrient addition plots (N, P, and N + P) varied as a function of morphological traits, tree size, and species identity. We also evaluated how trait-based responses affected stand scale biomass production considering the community structure. We found that tree growth depended on interactions between functional traits and the type or combination of nutrients added. Common species with acquisitive functional traits responded more strongly to nutrient addition, mainly to N + P. Phosphorous enhanced the growth rates of species with acquisitive and conservative traits, had mostly positive effects on common species and neutral or negative effects in rare species. Moreover, trees receiving N + P grew faster irrespective of their initial size relative to trees in control or to trees in other treatment plots. Finally, species responses were highly idiosyncratic suggesting that community processes including competition and niche dimensionality may be altered under increased resource availability. We found no statistically significant effects of nutrient additions on aboveground biomass productivity because acquisitive species had a limited potential to increase their biomass, possibly due to their generally lower wood density. In contrast, P addition increased the growth rates of species characterized by more conservative resource strategies (with higher wood density) that were poorly represented in the plant community. We provide the first long-term experimental evidence that trait-based responses, community structure, and community processes modulate the effects of increased nutrient availability on biomass productivity in a tropical forest.


英文关键词biomass productivity Ecuador experimental nutrient manipulation functional traits nitrogen phosphorus tree growth tropical montane forest
领域气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000426506100061
WOS关键词RAIN-FOREST ; PHOSPHORUS LIMITATION ; MULTIMODEL INFERENCE ; ENVIRONMENTAL-CHANGE ; MODEL SELECTION ; SHADE TOLERANCE ; NITROGEN ; DIVERSITY ; POTASSIUM ; RESPONSES
WOS类目Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/17350
专题气候变化
资源环境科学
作者单位1.Escuela Politec Nacl, Inst Ciencias Biol, Quito, Ecuador;
2.Univ Tecn Particular Loja, Museo Colecc Biol, Loja, Ecuador;
3.Univ Goettingen, Plant Ecol, Gottingen, Germany
推荐引用方式
GB/T 7714
Baez, Selene,Homeier, Juergen. Functional traits determine tree growth and ecosystem productivity of a tropical montane forest: Insights from a long-term nutrient manipulation experiment[J]. GLOBAL CHANGE BIOLOGY,2018,24(1):399-409.
APA Baez, Selene,&Homeier, Juergen.(2018).Functional traits determine tree growth and ecosystem productivity of a tropical montane forest: Insights from a long-term nutrient manipulation experiment.GLOBAL CHANGE BIOLOGY,24(1),399-409.
MLA Baez, Selene,et al."Functional traits determine tree growth and ecosystem productivity of a tropical montane forest: Insights from a long-term nutrient manipulation experiment".GLOBAL CHANGE BIOLOGY 24.1(2018):399-409.
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