Impacts of climate change on vegetation pattern: Mathematical modeling and data analysis

Sun, Gui‐Quan; Li, Li; Li, Jing; Liu, Chen; Wu, Yongping; Gao, Shupeng; Wang, Zhen; Feng, Guolin

doi:10.1016/j.plrev.2022.09.005

Cited by 48 publications

(12 citation statements)

References 163 publications

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“…General plant biomass loss is also directly related to respiration, and it is explicitly included as such in some vegetation models [47]. Plant respiration increases, through a power relation, with increasing temperature, and hence biomass loss due to respiration is expected to be much higher under future climate change scenarios than historically assumed [48,49].…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Delay Effects on Plant Stability and Symmetry-Breaking Pattern Formation in a Klausmeier-Gray-Scott Model of Semiarid Vegetation

Medjahdi,

Lachachi,

Castro

et al. 2024

Symmetry

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The Klausmeier–Gray–Scott model of vegetation dynamics consists of a system of two partial differential equations relating plant growth and soil water. It is capable of reproducing the characteristic spatial patterns of vegetation found in plant ecosystems under water limitations. Recently, a discrete delay was incorporated into this model to account for the lag between water infiltration into the soil and the following water uptake by plants. In this work, we consider a more ecologically realistic distributed delay to relate plant growth and soil water availability and analyse the effects of different delay types on the dynamics of both mean-field and spatial Klausmeier–Gray–Scott models. We consider distributed delays based on Gamma kernels and use the so-called linear chain trick to analyse the stability of the uniformly vegetated equilibrium. It is shown that the presence of delays can lead to the loss of stability in the constant equilibrium and to a reduction of the parameter region where steady-state vegetation patterns can arise through symmetry-breaking by diffusion-driven instability. However, these effects depend on the type of delay, and they are absent for distributed delays with weak kernels when vegetation mortality is low.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Delay Effects on Plant Stability and Symmetry-Breaking Pattern Formation in a Klausmeier-Gray-Scott Model of Semiarid Vegetation

Medjahdi,

Lachachi,

Castro

et al. 2024

Symmetry

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“…Nyckelord: Brödvete, glutenpolymerer, torka, värme, sedimentering, SE-HPLC, SRC TKW TMP TOTE TOTU TPP %UPP Solvent retention capacity Thousand kernel weight Total monomeric proteins Total SDS-extractable proteins Total SDS-unextractable proteins Total polymeric proteins Percentage of SDS-unextractable polymeric proteins in total polymeric proteins Global temperature is getting warmer and more unpredictable. Higher temperatures and changes in rainfall patterns as a result of climate change are affecting vegetation worldwide (Sun et al, 2022). Several other climate parameters, such as rising concentration of carbon dioxide (CO2), and changing surface solar radiation, also have significant impacts on crop production and development .…”

Section: Wheat Quality Under a Climate Spellmentioning

confidence: 99%

Wheat quality under a climate spell : a focus on protein, physico-chemical and growth characteristics evaluated by innovatively combined approaches

Lama¹

2023

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The quality of bread is largely determined by the gluten protein concentration and composition, both greatly influenced by environmental factors such as heat and drought. Future climate in Sweden is expected to fluctuate severely, affecting gluten proteins and the production of bread wheat, as well as future availability of food. The thesis aimed to enhance knowledge of the effect of varying climates on the gluten protein quality in Swedish wheat and to evaluate new methods for yield and gluten protein screening in order to assist in future wheat breeding programs. In this thesis, plant growth-yield traits and gluten protein quality in flour and dough were studied in Swedish wheat of varying genetic backgrounds and imported varieties, all grown in diverse environments in Sweden. Red-green-blue (RGB) imaging and analytical chromatography tools, such as size exclusion high performance liquid chromatography (SE-HPLC) and mass spectrometry (LC-MS/MS), as well as near infrared spectroscopy (NIR) were used to study wheat plants and flour materials. A mixograph was used to prepare dough in this study. Robust flour sedimentation methods, such as swelling index of glutenins (SIG) and solvent retention capacity (SRC), were used to examine the gluten protein characteristics of wheat flour from varying growing environments and were compared to industrial flour screening methods. The results show that the combined heat-drought stresses negatively affected biomass, yield and thousand-kernel weight (TKW) in the wheat studied. During extreme heat and prolonged drought, higher amounts of large polymeric gluten proteins (%UPP) were observed in the spring wheat flours in both field and controlled growth environments. Total extractable gluten protein (TOTE) was higher in the wheat genotypes grown in the cool climate in the field and combined heat-drought stress in the greenhouse. No difference in optimum dough mixing time in wheat from different years was observed. Dough mixing time, together with the gluten protein parameters (%UPP and TOTE) could be promising traits for gluten stability evaluation in varying climates. RGB imaging in combination with SE-HPLC can be useful in screening stable wheat genotypes for yield and gluten quality in varying climates. A combination of robust small-scale sedimentation tests to assess wheat flour suitability for bread-making, SIG in diluted lactic acid, SRC and SE-HPLC can be effectively used for efficient screening of wheat resilient to climate change. The new set of combined methods that include plant imaging, flour sedimentation, analytical chromatography and NIR, is of the greatest interest for both breeding and breadbaking industries to evaluate wheat in a changing climate.

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“…Global climate change is associated with an increase in droughts and heat waves [ 1 , 2 ]. Global climate change may prevent, delay, or promote species regeneration from seeds, which may have an impact on the dynamics of plant populations and the composition of vegetation [ 3 , 4 , 5 ]. The impacts of climate change on plants have been extensively studied, but less attention has been paid to how these changes may affect plant regeneration [ 4 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Water Potential and Temperature on Native Species’ Capability for Seed Germination in the Loess Plateau Region, China

Hu,

He,

Wang

et al. 2024

Plants

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Global warming is increasing the frequency and intensity of heat waves and droughts. One important phase in the life cycle of plants is seed germination. To date, the association of the temperature and water potential thresholds of germination with seed traits has not been explored in much detail. Therefore, we set up different temperature gradients (5–35 °C), water potential gradients (−1.2–0 MPa), and temperature × water potential combinations for nine native plants in the Loess Plateau region to clarify the temperature and water combinations suitable for their germination. Meanwhile, we elucidated the temperature and water potential thresholds of the plants and their correlations with the mean seed mass and flatness index by using the thermal time and hydrotime models. According to our findings, the germination rate was positively correlated with the germination percentage and water potential, with the former rising and the latter decreasing as the temperature increased. Using the thermal time and hydrotime models, the seed germination thresholds could be predicted accurately, and the germination thresholds of the studied species varied with an increase in germination percentage. Moreover, temperature altered the impact of water potential on the germination rate. Overall, the base water potential for germination, but not the temperature threshold, was negatively correlated with mean seed mass and was lower for rounder seeds than for longer seeds. This study contributes to improving our understanding of the seed germination characteristics of typical plants and has important implications for the management and vegetation restoration of degraded grasslands.

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Impacts of climate change on vegetation pattern: Mathematical modeling and data analysis

Cited by 48 publications

References 163 publications

Delay Effects on Plant Stability and Symmetry-Breaking Pattern Formation in a Klausmeier-Gray-Scott Model of Semiarid Vegetation

Delay Effects on Plant Stability and Symmetry-Breaking Pattern Formation in a Klausmeier-Gray-Scott Model of Semiarid Vegetation

Wheat quality under a climate spell : a focus on protein, physico-chemical and growth characteristics evaluated by innovatively combined approaches

The Impact of Water Potential and Temperature on Native Species’ Capability for Seed Germination in the Loess Plateau Region, China

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