气候变化领域集成服务门户(CCPortal): Reduced tree density and basal area in Andean forests are associated with bamboo dominance

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DOI	10.1016/j.foreco.2020.118648
	Reduced tree density and basal area in Andean forests are associated with bamboo dominance
	Fadrique B.; Santos-Andrade P.; Farfan-Rios W.; Salinas N.; Silman M.; Feeley K.J.
发表日期	2021
ISSN	0378-1127
卷号	480
英文摘要	Forest structure and composition play an essential role in determining the carbon storage capacity of tropical forests. Andean forests, with great potential for carbon accumulation, include large expanses of high-density woody bamboo communities. Woody bamboos can potentially alter forest structure, composition and dynamics and thus can affect carbon storage capacity; however, they are commonly excluded from forest monitoring and modelling. With the aim of documenting patterns of bamboo abundance and disentangling its association with forest structure, we carried out a bamboo census in seven 1-ha long-term forest monitoring plots situated across a large elevation gradient (1000–3600 m a.s.l.) in the Peruvian Andes. We determined that bamboo is a dominant plant group in the study area. In every plot, bamboos were the most common genera in terms of number of stems, and in two of the plots bamboo species were among those with the greatest basal area. We used a combination of Generalized linear mixed models (GLMM) and structural equation modelling (SEM) to hypothesize a causal framework and determine the direction and size of the effects of bamboo abundance (basal area) on number of individual trees, total tree basal area, mean tree basal area, mean tree growth rate and tree mortality rate. We found an overall negative association between bamboo abundance and total tree basal area driven mainly by reduced tree density (directly and indirectly mediated by an increase in tree mortality). However, the decrease in tree density and the increase in tree mortality are also associated with a small increase in tree diameter (mean tree basal area). Overall, the negative association between bamboo abundance and tree basal area suggests a lower biomass accumulation and thus a lower carbon storage capacity of trees in Andean forests where bamboo is dominant. Our results, which show the importance of bamboo in determining forest function, highlight the need for including bamboo in monitoring efforts and modeling studies. © 2020 Elsevier B.V.
英文关键词	Carbon dynamics; Forest structure; Monitoring plots; Plant interactions; Tropical forests
语种	英语
scopus关键词	Bamboo; Statistical methods; Biomass accumulation; Carbon accumulation; Elevation gradient; Forest function; Forest monitoring; Forest structure; Generalized linear mixed models; Structural equation modelling (SEM); Forestry; abundance; bamboo; basal area; dominance; ecological modeling; forest ecosystem; growth rate; tree; tropical forest; Bamboo; Basal Area; Carbon; Density; Forestry; Forests; Statistical Methods; Trees; Andes; Bambusa; Phyllostachys acuta
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154845
作者单位	Department of Biology, University of Miami, Coral Gables, FL 33146, United States; Universidad Nacional San Antonio Abad del Cusco, Cusco, Peru; Center for Conservation and Sustainable Development, Missouri Botanical Garden, St. Louis, MO 63166-0299, United States; Living Earth Collaborative, Washington University in Saint Louis, St. Louis, MO 63130, United States; Herbario Vargas (CUZ), Universidad Nacional de San Antonio Abad del Cusco, Cusco, Peru; Institute for the Sciences of Nature, Earth and Energy (INTE-PUCP), Pontifical Catholic University of Peru, Lima, 15088, Peru; Department of Biology and Center for Energy, Environment and Sustainability, Wake Forest University, Winston-Salem, NC, United States; Fairchild Tropical Botanical Garden, Coral Gables, FL 33146, United States
推荐引用方式 GB/T 7714	Fadrique B.,Santos-Andrade P.,Farfan-Rios W.,et al. Reduced tree density and basal area in Andean forests are associated with bamboo dominance[J],2021,480.
APA	Fadrique B.,Santos-Andrade P.,Farfan-Rios W.,Salinas N.,Silman M.,&Feeley K.J..(2021).Reduced tree density and basal area in Andean forests are associated with bamboo dominance.Forest Ecology and Management,480.
MLA	Fadrique B.,et al."Reduced tree density and basal area in Andean forests are associated with bamboo dominance".Forest Ecology and Management 480(2021).