2018
DOI: 10.3389/fpls.2018.00727
|View full text |Cite
|
Sign up to set email alerts
|

Midday Depression vs. Midday Peak in Diurnal Light Interception: Contrasting Patterns at Crown and Leaf Scales in a Tropical Evergreen Tree

Abstract: Crown architecture usually is heterogeneous as a result of foraging in spatially and temporally heterogeneous light environments. Ecologists are only beginning to identify the importance of temporal heterogeneity for light acquisition in plants, especially at the diurnal scale. Crown architectural heterogeneity often leads to a diurnal variation in light interception. However, maximizing light interception during midday may not be an optimal strategy in environments with excess light. Instead, long-lived plant… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
4
1

Citation Types

1
5
0

Year Published

2019
2019
2022
2022

Publication Types

Select...
6
1

Relationship

0
7

Authors

Journals

citations
Cited by 7 publications
(9 citation statements)
references
References 62 publications
1
5
0
Order By: Relevance
“…The occurrence of "midday depression" was considered a stress effect or an adaptation strategy of apple to drought. This adaptation strategy is also observed in guava tree [30]. In addition, the degree of this response differed markedly between stressed cultivars, with Pn, Gs, Ci and Tr for Yanfu 3 remaining significantly lower than the controls.…”
Section: Discussionsupporting
confidence: 57%
“…The occurrence of "midday depression" was considered a stress effect or an adaptation strategy of apple to drought. This adaptation strategy is also observed in guava tree [30]. In addition, the degree of this response differed markedly between stressed cultivars, with Pn, Gs, Ci and Tr for Yanfu 3 remaining significantly lower than the controls.…”
Section: Discussionsupporting
confidence: 57%
“…Total incoming light at the top of the canopy in tropical forests can exceed 2000 µmol m −2 s −1 (Shuttleworth, 1984), and we therefore expected that the light saturation point of the upper canopy sunlit leaves would be reached at PPFD levels close to 2000 µmol m −2 s −1 for optimal light use efficiency. However, the upper canopy sunlit leaves typically received much less incoming PPFD due to the diel cycle of the solar zenith angle and the leaf angle (Ventre‐Lespiaucq, Flanagan, Ospina‐Calderon, Delgado, & Escudero, 2018). This is demonstrated by the comparison of light interception by sensors installed on the leaves themselves compared to measurements of incoming light on the flux tower (Figures S3), indicating that the leaves are not frequently exposed to very high PPFD levels.…”
Section: Discussionmentioning
confidence: 99%
“…Virtual plants would be a novel approach for quantitatively analyzing the light interception of the canopy, thereby aiding in the design of tree architecture. Based on our previous studies (Tang et al, 2011, 2017, 2018), the software LSTree has been extended for tree-type design to examine the light interception of a canopy by integrating a radiosity model and modified rectangular hyperbola model. The interactive design module was implemented using the pseudo color offscreen rendering method; this method can obtain objects in large graphics quickly, which contributes to the interactive editing of 3D tree models.…”
Section: Discussionmentioning
confidence: 99%
“…Therefore, light interception is considered a major performance metric for defining ideotypes (Silva et al, 2014b; Gao et al, 2018; Rpa et al, 2018). An optimal canopy architecture is generally evaluated using parameters such as leaf shape (Rpa et al, 2018), leaf angle, leaf direction (Jung et al, 2018; Ventrelespiaucq et al, 2018), internode length (Silva et al, 2014b) and so on. Scaffold branch angle is one of the most widely used parameters in fruit training systems, because the adjustment of the angle of the branches will change the direction of the leaf correspondingly.…”
Section: Introductionmentioning
confidence: 99%