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Dry conditions and disturbance promote liana seedling survival and abundance
Umana, Maria Natalia1; Forero-Montana, Jimena; Nytch, Christopher J.; Thompson, Jill3; Uriarte, Maria4; Zimmerman, Jess2,5; Swenson, Nathan G.
2019
Source PublicationECOLOGY
ISSN0012-9658
Volume100Issue:1Pages:-
Abstract

Species composition and community structure in Neotropical forests have been severely affected by increases in climate change and disturbance. Among the most conspicuous changes is the proliferation of lianas. These increases have affected not only the carbon storage capacity of forests but also tree dynamics by reducing tree growth and increasing mortality. Despite the importance of lianas in Neotropical forests, most of the studies on lianas have focused on adult stages, ignoring dynamics at the seedlings stage. Here, we asked whether observed increases in liana abundance are associated with a demographic advantage that emerges early in liana ontogeny and with decreased precipitation and increased disturbance. To test this, we compared patterns of growth and survival between liana seedlings and tree seedlings using a long-term data set of seedling plots from a subtropical wet forest in Puerto Rico, USA. Then, we examined the effect of precipitation and land use history on these demographic variables. We found evidence for liana seedling survival advantage over trees, but no growth advantages. This survival advantage exhibited significant temporal variation linked with patterns of rainfall, as well as differences associated with land-use history in the study area. Furthermore, we found that neighborhood density has a negative effect on liana survival and growth. Our results indicate that liana proliferation is likely related to a survival advantage that emerges in early stages and is influenced by climatic conditions and past disturbance. Predicted climatic changes in rainfall patterns, including more frequent and severe droughts, together with increases in disturbance, could have a significant effect on seedling tropical communities by favoring lianas.

KeywordSubtropical Wet Forest Land-use History Tropical Forests Rain-forest Environmental Heterogeneity Natural Disturbance Secondary Forest Dynamics Drought Biomass
Subject AreaEnvironmental Sciences & Ecology
DOI10.1002/ecy.2556
Indexed BySCI
Language英语
WOS IDWOS:000454706400010
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/11236
Collection2012年后新成立研究组
Affiliation1.[Umana, Maria Natalia; Swenson, Nathan G.] Univ Michigan, Dept Ecol & Evolutionary Biol, Ann Arbor, MI 48109 USA
2.Univ Maryland, Dept Biol, College Pk, MD 20742 USA
3.Univ Puerto Rico, Dept Biol, Rio Piedras, PR 00931 USA
4.Ctr Ecol & Hydrol, Bush Estate, Penicuik EH26 0QB, Midlothian, Scotland
5.Columbia Univ, Dept Ecol Evolut & Environm Biol, New York, NY 10027 USA
6.Univ Puerto Rico, Dept Environm Sci, Rio Piedras, PR 00936 USA
7.Swenson, Nathan G.] Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Kunming, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Umana, Maria Natalia,Forero-Montana, Jimena,Nytch, Christopher J.,et al. Dry conditions and disturbance promote liana seedling survival and abundance[J]. ECOLOGY,2019,100(1):-.
APA Umana, Maria Natalia.,Forero-Montana, Jimena.,Nytch, Christopher J..,Thompson, Jill.,Uriarte, Maria.,...&Swenson, Nathan G..(2019).Dry conditions and disturbance promote liana seedling survival and abundance.ECOLOGY,100(1),-.
MLA Umana, Maria Natalia,et al."Dry conditions and disturbance promote liana seedling survival and abundance".ECOLOGY 100.1(2019):-.
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