Altitudinal patterns of leaf stoichiometry and nutrient resorption in Quercus variabilis in the Baotianman Mountains, China

Du, Baoming; Ji, Huawei; Peng, Chuan; Liu, Xiaojing; Liu, Chunjiang

doi:10.1007/s11104-016-3093-9

Cited by 74 publications

(91 citation statements)

References 48 publications

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“…Calcium is a structural element in cell walls and tends to be resorbed less than other nutrients during senescence (Vergutz et al, 2012). Moreover, Ca and Fe can be potentially toxic at high concentrations and plants adapted to growing on gypsum soils have the ability to accumulate surplus Ca within vacuoles in their leaves, probably as an adaptive mechanism to eliminate it with leaf shedding (Du et al, 2017;Palacio et al, 2007).…”

Section: Warming and Rainfall Reduction Effects On Nutrient Resorptmentioning

confidence: 99%

“…Globally, high proportions of leaf N (62.1%), P (64.9%), and K (70.1%) are resorbed before leaves are shed, while the ability of plants to resorb other nutrients is much lower (Vergutz, Manzoni, Porporato, Novais, & Jackson, ). Resorption of essential elements like N, P, or K has received substantial attention in the literature (Vergutz et al, and references therein) whereas the resorption patterns of other essential nutrients have received much less attention (but see Du, Ji, Peng, Liu, & Liu, ; Liu, Liu, Guo, Wang, & Yang, ).…”

Section: Introductionmentioning

confidence: 99%

“…However, little is known about the effects of ongoing climate change on this process (Brant & Chen, 2015, but see Aerts, Cornelissen, Van Logtestijn, & Callaghan, 2007;Norby, Long, Hartz-Rubin, & O'eill, 2000). Variation in N and P resorption along large environmental gradients has been attributed to changes in mean annual temperature and mean annual precipitation (Brant & Chen, 2015;Du et al, 2017;Sun et al, 2016;Yuan & Chen, 2009). At large spatial scales, plant nutrient concentrations (N, P, K) generally decrease with increasing mean annual temperature and decreasing mean annual rainfall (Reich & Oleksyn, 2004;Sardans et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Simulated climate change decreases nutrient resorption from senescing leaves

Prieto

Querejeta

2019

Global Change Biology

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Nutrient resorption is the process whereby plants recover nutrients from senescing leaves and reallocate them to storage structures or newer tissues. Elemental resorption of foliar N and P has been shown to respond to temperature and precipitation, but we know remarkably little about the influence of warming and drought on the resorption of these and other essential plant macro‐ and micronutrients, which could alter the ability of species to recycle their nutrients. We conducted a 5 year manipulative field study to simulate predicted climate change conditions and studied the effects of warming (W), rainfall reduction (RR), and their combination (W+RR) on nutrient resorption efficiency in five coexisting shrub species in a semiarid shrubland. Both mature and senesced leaves showed significant reductions in their nutrient contents and an altered stoichiometry in response to climate change conditions. Warming (W, W+RR) reduced mature leaf N, K, Ca, S, Fe, and Zn and senesced leaf N, Ca, Mg, S, Fe, and Zn contents relative to ambient temperature conditions. Warming increased mature leaf C/N ratios and decreased N/P and C/P ratios and increased senesced leaf C/N and C/P ratios. Furthermore, W and W+RR reduced nutrient resorption efficiencies for N (6.3%), K (19.8%), S (70.9%) and increased Ca and Fe accumulation in senesced leaves (440% and 35.7%, respectively) relative to the control treatment. Rainfall reduction decreased the resorption efficiencies of N (6.7%), S (51%), and Zn (46%). Reductions in nutrient resorption efficiencies with warming and/or rainfall reduction were rather uniform and consistent across species. The negative impacts of warming and rainfall reduction on foliar nutrient resorption efficiency will likely cause an impairment of plant nutrient budgets and fitness across coexisting native shrubs in this nutrient‐poor habitat, with probable implications for key ecosystem functions such as reductions in nutrient retention in vegetation, litter decomposition, and nutrient cycling rates.

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Section: Warming and Rainfall Reduction Effects On Nutrient Resorptmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simulated climate change decreases nutrient resorption from senescing leaves

Prieto

Querejeta

2019

Global Change Biology

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“…In a limited number of previous studies, only the leaf N concentration was found to be higher under wind when compared to wind-protected leaves [13,21,22]; leaf P concentrations and N:P were not studied under wind. Leaf P concentrations should exhibit similar trends to N concentrations [10,23,24], and leaf N:P should remain stable along environmental gradients [7,25], due to similar biochemical pathways for N and P [7]. Therefore, two hypotheses are proposed based on the previous studies: 1) leaf N, P concentrations will increase, and leaf N:P will remain stable under a wind load; 2) leaf N, P stoichiometry and leaf morphology will display synchronous variation under a wind load.…”

Section: Introductionmentioning

confidence: 99%

Effect of Wind on the Relation of Leaf N, P Stoichiometry with Leaf Morphology in Quercus Species

Zhang

Wang²,

et al. 2018

Forests

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Leaf nitrogen (N) and phosphorus (P) stoichiometry correlates closely to leaf morphology, which is strongly impacted by wind at multiple scales. However, it is not clear how leaf N, P stoichiometry and its relationship to leaf morphology changes with wind load. We determined the leaf N and P concentrations and leaf morphology-including specific leaf area (SLA) and leaf dissection index (LDI)-for eight Quercus species under a simulated wind load for seven months. Leaf N and P concentrations increased significantly under these conditions for Quercus acutissima, Quercus rubra, Quercus texana, and Quercus palustris-which have elliptic leaves-due to their higher N, P requirements and a resultant leaf biomass decrease, which is a tolerance strategy for Quercus species under a wind load. Leaf N:P was relatively stable under wind for all species, which supports stoichiometric homeostasis. Leaf N concentrations showed a positive correlation to SLA, leaf N and P concentrations showed positive correlations to LDI under each wind treatment, and the slope of correlations was not affected by wind, which indicates synchronous variations between leaf stoichiometry and leaf morphology under wind. However, the intercept of correlations was affected by wind, and leaf N and P use efficiency decreased under the wind load, which suggests that the Quercus species changes from "fast investment-return" in the control to "slow investment-return" under windy conditions. These results will be valuable to understanding functional strategies for plants under varying wind loads, especially synchronous variations in leaf traits along a wind gradient.

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“…Shifts from grassland to shrubland, the thicketization of grassland, or the encroachment of woody plants into grassland-a phenomenon known as shrub encroachment (SE)-occur all over the world [1][2][3][4][5][6] and have taken place during the last century [3][4][5]7,8], and even in the past two centuries [9,10]. This global encroachment at the expense of grasses in rangeland is forecast to increase over the coming century [11].…”

Section: Introductionmentioning

confidence: 99%

Shrub Encroachment Shapes Soil Nutrient Concentration, Stoichiometry and Carbon Storage in an Abandoned Subalpine Grassland

et al. 2019

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Soil nutrient stoichiometry plays a substantial role in terrestrial carbon and nutrient cycling. However, the changes in soil nutrient stoichiometry with shrub encroachment (SE) remain poorly understood, especially in subalpine areas. We examined the changes in soil nutrient concentration, nutrient stoichiometry, and organic carbon (OC) storage (at a depth of 0–5, 5–10 and 10–20 cm) in three successional shrub encroachment stages (early, mid and late) in an abandoned subalpine Eulalia pallens (Hackel) Kuntze grassland. An ANOVA showed that SE did not produce serious soil acidification, but significantly increased the soil OC and total phosphorous (TP) concentration, and improved the stoichiometry ratio of soil OC to total nitrogen (OC:TN) in all layers. OC storage tended to increase with SE. SE thus did not indicate degradation of the grassland. A redundancy analysis (RDA) and partial RDA revealed that the shrub relative cover and soil water content were the most important factors affecting the soil nutrient concentration, that the soil available phosphorous (AP), nitrogen, potassium, calcium (ACa), and magnesium concentration and shrub relative cover were the most important factors influencing soil nutrient stoichiometry ratios, and that soil OC:TN, TN:TP, OC:TN:TP, and AP:ACa ratios, bulk density, and pH were the most important factors influencing soil OC storage over SE. Our study provides insights into SE in grassland areas, and potentially provides a useful reference for ongoing grassland conservation and restoration in subalpine regions.

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Altitudinal patterns of leaf stoichiometry and nutrient resorption in Quercus variabilis in the Baotianman Mountains, China

Cited by 74 publications

References 48 publications

Simulated climate change decreases nutrient resorption from senescing leaves

Simulated climate change decreases nutrient resorption from senescing leaves

Effect of Wind on the Relation of Leaf N, P Stoichiometry with Leaf Morphology in Quercus Species

Shrub Encroachment Shapes Soil Nutrient Concentration, Stoichiometry and Carbon Storage in an Abandoned Subalpine Grassland

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