期刊
NATURE ECOLOGY & EVOLUTION
卷 5, 期 2, 页码 174-+出版社
NATURE PORTFOLIO
DOI: 10.1038/s41559-020-01340-9
关键词
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资金
- National Science Foundation of the United States [EF-1137366, BSR-9015961, DEB-1516066, BSR-8811902, DEB-9411973, DEB-008538, DEB-0218039, DEB-0620910]
- Faculty Development Leave Fellowship from the University of Nebraska-Lincoln
- Japan Society of the Promotion of Science
- Center for Tropical Forest Science/Smithsonian Institution Forest Global Earth Observatory network
- Council of Agriculture of Taiwan [93AS-2.4.2-FI-G1, 94AS-11.1.2-FI-G1(1)]
- Ministry of Science and Technology of Taiwan [NSC92-3114-B002-009, NSC98-2313-B-029-001-MY3, NSC98-2321-B-029-002]
- Forestry Bureau of Taiwan [92-00-2-06, TFBM-960226]
- Taiwan Forestry Research Institute [97 AS- 7.1.1.F1-G1]
- Mellon Foundation
- University of Puerto Rico
- Centre for Ecology and Hydrology
- German Academic Exchange Services (DAAD)
- Ministry of the Environment Japan [D-0901]
- Japan Society for the Promotion of Science [17H04602]
- Wildlife Conservation Society
- Institut Congolais pour la Conservation de la Nature
- Smithsonian Tropical Research Institute
- International Institute of Tropical Forestry of the USDA Forest Service
- Grants-in-Aid for Scientific Research [17H04602] Funding Source: KAKEN
This study analyzed demographic data of 1,111 tree species in tropical forests and found that the growth-mortality trade-off is more pronounced in undisturbed forests compared to disturbed forests. The research suggests that resource allocation strategies play a key role in determining the trade-off, raising questions about its universality in understanding tropical forest community structure.
Using demographic data for 1,111 tree species across ten tropical forests, the authors test the generality of the growth-mortality trade-off, finding that it holds in undisturbed but not disturbed forests. Resource allocation within trees is a zero-sum game. Unavoidable trade-offs dictate that allocation to growth-promoting functions curtails other functions, generating a gradient of investment in growth versus survival along which tree species align, known as the interspecific growth-mortality trade-off. This paradigm is widely accepted but not well established. Using demographic data for 1,111 tree species across ten tropical forests, we tested the generality of the growth-mortality trade-off and evaluated its underlying drivers using two species-specific parameters describing resource allocation strategies: tolerance of resource limitation and responsiveness of allocation to resource access. Globally, a canonical growth-mortality trade-off emerged, but the trade-off was strongly observed only in less disturbance-prone forests, which contained diverse resource allocation strategies. Only half of disturbance-prone forests, which lacked tolerant species, exhibited the trade-off. Supported by a theoretical model, our findings raise questions about whether the growth-mortality trade-off is a universally applicable organizing framework for understanding tropical forest community structure.
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