Seasonal dynamics of leaf and litter stoichiometry of different tree species in a coastal sand dune of southern subtropical china

Wei, Gao; Yue, Xinjian; Chen, Dezhi; Nie, Shuang; Chen, Mengyao; Gong-fu, YE

doi:10.5958/2229-4473.2018.00071.x

Cited by 2 publications

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“…During the early growth stage, the cell division rate gradually increases requiring selective absorptions of N and P, and a portion of the stored nutrients in the roots were transported to the leaves of P. australis , resulting in higher LN and LP [ 15 , 29 , 30 ]. P. australis was in rapid growth period in August, leaf photosynthesis was enhanced and LC was accumulated rapidly, but LN and LP diluted with the rapid increase of biomass, leading to a significant decrease in LN and LP [ 14 , 31 ]. During the late growing stage, with leaves senescence and nutrients return to roots, LN and LP decreased again [ 32 , 33 ].…”

Section: Discussionmentioning

confidence: 99%

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Seasonal Dynamics of Leaf Stoichiometry of Phragmites australis: A Case Study From Yangguan Wetland, Dunhuang, China

Jian

Biswas

et al. 2020

Plants

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Leaf stoichiometry can enhance our understanding of leaf elements’ (C, N and P) concentrations and their corresponding ratios in an ecosystem with seasonal environment changes. This study quantified the seasonal dynamics of leaf stoichiometry of P. australis from Yangguan wetland, Dunhuang, China as a case study example. The leaf C concentration (LC) of P. australis changed between seasons and was 392.26 (g×kg−1), 417.35 (g×kg−1) and 392.58 (g×kg−1) in spring, summer and autumn, respectively. Leaf N and P concentrations (LN and LP) were 23.49 (g×kg−1), and 17.54 (g×kg−1) and 5.86 (g×kg−1), and 1.00 (g×kg−1), 0.75 (g×kg−1) and 0.16 (g×kg−1), respectively, in the three seasons. The maximum (77.68) and the minimum values (17.00) of LC:LN were observed in the autumn and spring, respectively. Seasonal variations in LC:LP also showed a similar trend, with the greatest value of 3015.91 in autumn and the lowest value of 429.39 in spring. However, the highest (45.67) and the lowest values (24.18) of LN:LP were observed in autumn and summer, respectively, indicating that the growth of P. australis was mainly affected by P. Based on these results, it can be concluded that P. australis adopted a competition strategy during the early growth stage but took on a defense life strategy at the late growth stage to cope with various environments.

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Section: Discussionmentioning

confidence: 99%

“…This would have played a crucial role in osmotic protection and regulation [ 26 ]. At the late growing stage, allocating more carbohydrates to roots resulted in conserving resource and energy, and thus, the plant adopted a defensive life strategy [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

Seasonal Dynamics of Leaf Stoichiometry of Phragmites australis: A Case Study From Yangguan Wetland, Dunhuang, China

Jian

Biswas

et al. 2020

Plants

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Temporal Variation of Litterfall and Nutrient Return of Serianthes nelsonii Merr. in a Tropical Karst Forest

Marler¹,

Cruz

2022

Plants

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Trees contribute to ecosystem nutrient cycling through the amount, timing, and composition of litterfall. Understanding the nature of this contribution from endangered tree species may aid in species and habitat recovery efforts. Serianthes nelsonii is an endangered tree species from the Mariana Islands, and little is known about litterfall dynamics. The timing of leaf, fruit, and stem litterfall was determined to more fully understand the return of nutrients via litter. The total annual litterfall was 272.8 g·m−2, with 45% represented by leaves, 48% represented by stems, and 7% represented by fruits. Stem litterfall weight contrasted more from month to month than the other organs, and leaf litterfall exhibited the most even distribution throughout the year. The timing of fruit and stem litterfall was influenced by the timing of extreme wind events. Leaf litter contributed nutrients in the following order: carbon > calcium > nitrogen > potassium > magnesium > iron > phosphorus > manganese > boron > zinc > copper. Fruit and stem litter contributed nutrients in the following order: carbon > calcium > nitrogen > magnesium > potassium > phosphorus > iron > manganese > boron > zinc > copper. Based on carbon/nitrogen, the stem litter exhibited the lowest quality and leaf litter exhibited the highest quality for speed of nutrient release via decomposition. Conservationists may use this knowledge to more fully integrate S. nelsonii trees into habitat management plans.

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Seasonal dynamics of leaf and litter stoichiometry of different tree species in a coastal sand dune of southern subtropical china

Cited by 2 publications

References 0 publications

Seasonal Dynamics of Leaf Stoichiometry of Phragmites australis: A Case Study From Yangguan Wetland, Dunhuang, China

Seasonal Dynamics of Leaf Stoichiometry of Phragmites australis: A Case Study From Yangguan Wetland, Dunhuang, China

Temporal Variation of Litterfall and Nutrient Return of Serianthes nelsonii Merr. in a Tropical Karst Forest

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