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Functional Traits and Water Transport Strategies in Lowland Tropical Rainforest Trees

Apgaua, Deborah M G ; Ishida, Françoise Y ; Tng, David Y P ; Laidlaw, Melinda J ; Santos, Rubens M ; Rumman, Rizwana ; Eamus, Derek ; Holtum, Joseph A M ; Laurance, Susan G W Zang, Runguo

PloS one, 2015-06, Vol.10 (6), p.e0130799-e0130799 [Periódico revisado por pares]

United States: Public Library of Science

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Título:
Functional Traits and Water Transport Strategies in Lowland Tropical Rainforest Trees
Autor: Apgaua, Deborah M G ; Ishida, Françoise Y ; Tng, David Y P ; Laidlaw, Melinda J ; Santos, Rubens M ; Rumman, Rizwana ; Eamus, Derek ; Holtum, Joseph A M ; Laurance, Susan G W
Zang, Runguo
Assuntos: Australia ; Climate Change ; Climate change scenarios ; Climatic extremes ; Conservation ; Drought ; Drought resistance ; Droughts ; Extreme weather ; Forests ; Functional groups ; Future climates ; Global temperature changes ; Hydraulic equipment ; Leaves ; Models, Biological ; Multivariate analysis ; Palm ; Plant Leaves - anatomy & histology ; Plant Leaves - growth & development ; Plant Leaves - physiology ; Plant Stems - anatomy & histology ; Plant Stems - growth & development ; Plant Stems - physiology ; Plant Transpiration ; Precipitation (Meteorology) ; Protection and preservation ; Rain forests ; Rainfall ; Rainforest ; Rainforests ; Species ; Transport ; Tree growth ; Trees ; Trees - anatomy & histology ; Trees - growth & development ; Trees - physiology ; Tropical Climate ; Variability ; Water - metabolism ; Water resistance ; Water transport ; Weather extremes ; Weather forecasting ; Wildlife conservation
É parte de: PloS one, 2015-06, Vol.10 (6), p.e0130799-e0130799
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
Competing Interests: The authors have declared that no competing interests exist.
Conceived and designed the experiments: SGWL JH DYPT FYI. Performed the experiments: DMGA DYPT MJL FYI RR SGWL. Analyzed the data: DMGA SGWL DE. Contributed reagents/materials/analysis tools: DE RMS. Wrote the paper: DMGA DYPT SGWL DE.
Descrição: Understanding how tropical rainforest trees may respond to the precipitation extremes predicted in future climate change scenarios is paramount for their conservation and management. Tree species clearly differ in drought susceptibility, suggesting that variable water transport strategies exist. Using a multi-disciplinary approach, we examined the hydraulic variability in trees in a lowland tropical rainforest in north-eastern Australia. We studied eight tree species representing broad plant functional groups (one palm and seven eudicot mature-phase, and early-successional trees). We characterised the species' hydraulic system through maximum rates of volumetric sap flow and velocities using the heat ratio method, and measured rates of tree growth and several stem, vessel, and leaf traits. Sap flow measures exhibited limited variability across species, although early-successional species and palms had high mean sap velocities relative to most mature-phase species. Stem, vessel, and leaf traits were poor predictors of sap flow measures. However, these traits exhibited different associations in multivariate analysis, revealing gradients in some traits across species and alternative hydraulic strategies in others. Trait differences across and within tree functional groups reflect variation in water transport and drought resistance strategies. These varying strategies will help in our understanding of changing species distributions under predicted drought scenarios.
Editor: United States: Public Library of Science
Idioma: Inglês

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Functional Traits and Water Transport Strategies in Lowland Tropical Rainforest Trees

Apgaua, Deborah M G ; Ishida, Françoise Y ; Tng, David Y P ; Laidlaw, Melinda J ; Santos, Rubens M ; Rumman, Rizwana ; Eamus, Derek ; Holtum, Joseph A M ; Laurance, Susan G W Zang, Runguo

United States: Public Library of Science

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