Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13658 |
Intra-annual plasticity of growth mediates drought resilience over multiple years in tropical seedling communities | |
O&1; 39;Brien, Michael J.2 | |
2017-10-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:10 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; Malaysia |
英文摘要 | Precipitation patterns are changing across the globe causing more severe and frequent drought for many forest ecosystems. Although research has focused on the resistance of tree populations and communities to these novel precipitation regimes, resilience of forests is also contingent on recovery following drought, which remains poorly understood, especially in aseasonal tropical forests. We used rainfall exclusion shelters to manipulate the interannual frequency of drought for diverse seedling communities in a tropical forest and assessed resistance, recovery and resilience of seedling growth and mortality relative to everwet conditions. We found seedlings exposed to recurrent periods of drought altered their growth rates throughout the year relative to seedlings in everwet conditions. During drought periods, seedlings grew slower than seedlings in everwet conditions (i.e., resistance phase) while compensating with faster growth after drought (i.e., recovery phase). However, the response to frequent drought was species dependent as some species grew significantly slower with frequent drought relative to everwet conditions while others grew faster with frequent drought due to overcompensating growth during the recovery phase. In contrast, mortality was unrelated to rainfall conditions and instead correlated with differences in light. Intra-annual plasticity of growth and increased annual growth of some species led to an overall maintenance of growth rates of tropical seedling communities in response to more frequent drought. These results suggest these communities can potentially adapt to predicted climate change scenarios and that plasticity in the growth of species, and not solely changes in mortality rates among species, may contribute to shifts in community composition under drought. |
英文关键词 | climate change drought frequency forest dynamics phenological shifts plant-climate interactions recovery resistance |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410642100022 |
WOS关键词 | RAIN-FOREST ; TREE SEEDLINGS ; PLANT DIVERSITY ; SOUTHEAST-ASIA ; WATER-DEFICIT ; MORTALITY ; VEGETATION ; CARBON ; PATHOGENS ; DENSITY |
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/17526 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.CSIC, Estn Expt Zonas Aridas, La Canada De San Urbano, Almeria, Spain; 2.Danum Valley Field Ctr, SEARRP, Lahad Datu, Sabah, Malaysia; 3.Forest Res Ctr, Sandakan, Sabah, Malaysia |
推荐引用方式 GB/T 7714 | O&,39;Brien, Michael J.. Intra-annual plasticity of growth mediates drought resilience over multiple years in tropical seedling communities[J]. GLOBAL CHANGE BIOLOGY,2017,23(10). |
APA | O&,&39;Brien, Michael J..(2017).Intra-annual plasticity of growth mediates drought resilience over multiple years in tropical seedling communities.GLOBAL CHANGE BIOLOGY,23(10). |
MLA | O&,et al."Intra-annual plasticity of growth mediates drought resilience over multiple years in tropical seedling communities".GLOBAL CHANGE BIOLOGY 23.10(2017). |
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