Native-source climate determines the Douglas-fir potential of adaptation to drought

Chauvin, Thibaud; Cochard, Hervé; Segura, Vincent; Rozenberg, Philippe

doi:10.1016/j.foreco.2019.03.054

Cited by 31 publications

(21 citation statements)

References 52 publications

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“…Spatiotemporal shifts in the linear weather-growth correlations (Figure 2 and Figures S4-S9) and the estimated response curves (Figure 3) highlighted the plasticity and nonlinearity of weather-growth relationships [14,19,25] of Norway spruce in the Eastern Baltic region. The plasticity of responses is indicative of both regional specialization [17,18,26,31,35] and adaptability to changing conditions [30,34,68]. Within the studied region, which included the southern margin of lowland distribution of spruce [36,50], phenotypical plasticity exceeded genetic specialization of weather-growth sensitivity (Table 4), implying some adaptability of populations in the medium term [4,18,30,42,68].…”

Section: Plasticity and Stationarity Of Weather-growth Relationshipsmentioning

confidence: 97%

“…As long-lived organisms, trees have evolved high phenotypical plasticity, allowing them to survive the highly temporal variability of weather conditions [7,33]. Nevertheless, tree populations have often specialized to certain local conditions, genetically restraining their plasticity, irrespective of high gene flow [30,[33][34][35]. This presumes the existence of local population-wise optimum conditions.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear Weather–Growth Relationships Suggest Disproportional Growth Changes of Norway Spruce in the Eastern Baltic Region

Matisons

Elferts

Krišāns

et al. 2021

Forests

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Norway spruce (Picea abies (L.) H. Karst.) is predicted to decrease its abundance in the Eastern Baltic region as a result of climatic changes, and this process is already explicit at the southern limit of species lowland distribution. Still, there are uncertainties about the growth potential of Norway spruce within the region due to the plasticity of local populations. In this regard, an assessment of regional weather–growth responses, assuming a nonlinearity of the ecological relationship, can aid in the clarification of uncertainties regarding growth. Nonlinear regional weather–growth relationships for Norway spruce were assessed based on tree-ring widths from 22 stands spreading from Southern Finland to Northern Germany using dendrochronological methods and a generalized additive mixed model. Temporal and spatial stationarity of local linear weather–growth relationships was evaluated. Considering the drought sensitivity of Norway spruce, meteorological variables related to the summer moisture regime were the main predictors of radial increment, though conditions in winter and spring had complementary effects. Generally, the linear weather–growth relationships were spatially and temporary nonstationary, with some exceptions in Poland and Northern Germany. Explicit local specifics in the linear weather–growth relationships, which are common in the marginal parts of species’ distribution, were observed in Estonia, Latvia, and Poland. The estimated regional weather–growth relationships were mostly nonlinear, implying disproportional responses to climatic changes, particularly to intensifying drought conditions across the studied climatic gradient. Still, the responses to winter temperature suggested that warming might contribute to growth. The estimated linear and nonlinear growth responses indicate strict limitation by drought conditions, implying reductions of increment due to climatic changes southward from Latvia, suggesting the necessity for proactive management. Nevertheless, in the northern part of the analyzed region, the projected climatic changes appear favorable for growth of Norway spruce in the near future.

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Section: Plasticity and Stationarity Of Weather-growth Relationshipsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Nonlinear Weather–Growth Relationships Suggest Disproportional Growth Changes of Norway Spruce in the Eastern Baltic Region

Matisons

Elferts

Krišāns

et al. 2021

Forests

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“…However, the efficiency of breeding depends on the strength of the genetic control, hence the heritability of the traits providing adaptive advantages [6,10,[13][14][15]. Propitiously, traits with adaptive significance or affecting reproductive success are often genetically controlled [16][17][18], although the strength of the control can differ [13,[19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…Provenance trials, which have been established for the assessment of performance of genotypes from diverse origins, are being revisited as the source of information on the adaptability of tree populations in the longer term [11,23,24], which is crucial for climate-smart forestry [4,5]. The adaptability of trees depends on genetic specialization and phenotypic plasticity, which have evolved to maximize survival and competitiveness of genotypes under certain conditions [14,16,18]. For the evaluation of both, the parallel provenance trials are particularly informative due to the extension of ecological gradients, revealing the genotype-environment interactions and adaptability [8][9][10]14,23,25].…”

Section: Introductionmentioning

confidence: 99%

South-Eastern Baltic Provenances of Scots Pine Show Heritable Weather-Growth Relationships

Matisons

Schneck

Jansone

et al. 2021

Forests

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The productivity of forests has been linked to the sensitivity of tree growth to meteorological conditions and their fluctuations, hence moderation of tree sensitivity is one of the goals for climate-smart forest management. For this, tree breeding is among the most effective means, particularly if breeding populations are supplemented with genotypes (provenances) adapted to the expected climates. Nonetheless, heritability of traits is essential for their improvement by breeding. In this study, heritability of growth sensitivity of south-eastern Baltic provenances of Scots pine differing by field performance to meteorological conditions was assessed combining methods of quantitative genetics and dendrochronology. Five parallel provenance trials within the south-eastern Baltic region were investigated. The effects of regional weather drivers of growth (moisture regime in summer, temperature regime in preceding summer and in the dormancy period) were estimated, yet their strengths differed among the provenances, indicating local specialization of metapopulations of Scots pine. The heritability of growth sensitivity to these factors ranged from low to moderate, similarly as observed for the morphometric traits within the region; however, the provenance (genetic) variation appeared to be higher. The differences in heritability of responses, however, indicated uneven adaptive significance of weather conditions. Although the estimates were based on a limited set of genotypes implying caution in the extrapolation of results, the weather-growth relationships and their heritability indicate that sensitivity of growth is a complementary trait aiding breeding of forest reproductive material best suited for future climates. Heritable weather-growth relationships also imply a high potential for forest breeding to moderate the sensitivity of the trees.

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“…Intraspecific (within-species) variation in the expression of functional traits related to water and nutrient uptake influences seedling establishment and physiological responses to drought (Sultan, 2000;Howe et al, 2003;Kawecki and Ebert, 2004;Isaac-Renton et al, 2018;Ramírez-Valiente et al, 2018;Roches et al, 2018;Chauvin et al, 2019;Roskilly et al, 2019). Intraspecific adaptations to their climate of origin collectively enable a species to survive in diverse climates and span a large geographic range.…”

Section: Introductionmentioning

confidence: 99%

Effects of Soil Microbes on Functional Traits of Loblolly Pine (Pinus taeda) Seedling Families From Contrasting Climates

et al. 2020

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Examining factors that influence seedling establishment is essential for predicting the impacts of climate change on tree species' distributions. Seedlings originating from contrasting climates differentially express functional traits related to water and nutrient uptake and drought resistance that reflect their climate of origin and influence their responses to drought. Soil microbes may improve seedling establishment because they can enhance water and nutrient uptake and drought resistance. However, the relative influence of soil microbes on the expression of these functional traits between seedling families or populations from contrasting climates is unknown. To determine if soil microbes may differentially alter functional traits to enhance water and nutrient uptake and drought resistance between dry and wet families, seeds of loblolly pine families from the driest and wettest ends of its geographic range (dry, wet) were planted in sterilized sand (controls) or in sterilized sand inoculated with a soil microbial community (inoculated). Functional traits related to seedling establishment (germination), water and nutrient uptake and C allocation (root:shoot biomass ratio, root exudate concentration, leaf C:N, leaf N isotope composition (d 15 N)), and drought resistance (turgor loss point, leaf carbon isotope composition (d 13 C)) were measured. Then, plants were exposed to a drought treatment and possible shifts in photosynthetic performance were monitored using chlorophyll fluorescence. Inoculated plants exhibited significantly greater germination than controls regardless of family. The inoculation treatment significantly increased root: shoot biomass ratio in the wet family but not in the dry family, suggesting soil microbes alter functional traits that improve water and nutrient uptake more so in a family originating from a wetter climate than in a family originating from a drier climate. Microbial effects on photosynthetic performance during drought also differed between families, as photosynthetic performance of the dry inoculated group declined fastest. Regardless of treatment, the dry family exhibited a greater root:shoot biomass ratio, root exudate concentration, and leaf d 15 N than the wet family. This indicates that the dry family allocated more resources belowground than the wet and the two family may have used different

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Native-source climate determines the Douglas-fir potential of adaptation to drought

Cited by 31 publications

References 52 publications

Nonlinear Weather–Growth Relationships Suggest Disproportional Growth Changes of Norway Spruce in the Eastern Baltic Region

Nonlinear Weather–Growth Relationships Suggest Disproportional Growth Changes of Norway Spruce in the Eastern Baltic Region

South-Eastern Baltic Provenances of Scots Pine Show Heritable Weather-Growth Relationships

Effects of Soil Microbes on Functional Traits of Loblolly Pine (Pinus taeda) Seedling Families From Contrasting Climates

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