Variación en el patrón de crecimiento en altura de cuatro especies de Pinus en edades tempranas

García, Jesús Gustavo Salazar; Hernández, J. Jesús Vargas; Mata, Jesús Jasso; Galán, José Domingo Molina; Ramírez-Herrera, Carlos; Upton, Javier López

doi:10.21829/myb.1999.521345

Cited by 11 publications

(6 citation statements)

References 6 publications

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“…In this study, P. patula populations originating, in general, at mid-low and mid altitudes had a higher growth potential, which seems to be characteristic of this species (SALAZAR-GARCÍA, 1999). However, the population from the extreme lowest altitude (2400 m) had poorer growth performance than other populations from similar altitudes.…”

Section: Discussionmentioning

confidence: 46%

Altitudinal genetic variation among native Pinus patula provenances: performance in two locations, seed zone delineation and adaptation to climate change

et al. 2014

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To select the genetic source of Pinus patula Shiede and Deppe seed best adapted to different native zones for reforestation, seedlings of 12 provenances native to a selected altitudinal gradient in Oaxaca, southern Mexico, were planted on two sites at contrasting altitudes (high 3000 m above sea level (masl) and low, 2500 masl) within the species natural distribution, and tested for growth in height at age 18, 24 and 36 months. Differences among provenances and between sites showed significance (p<0.05). Seedling growth showed a climatic and altitudinal pattern, in which seedlings from populations originating in low-middle altitudes had higher growth than populations originating in high altitudes, and from the extreme low altitude limit. Results were used to delineate climatic and altitudinal seed zones for contemporary and future climate zones in the decade centered in year 2030, using the average results of six climate-emissions scenarios. The results indicate that splitting the region into four seed zones is appropriate under contemporary climate scenarios with the following altitude limits: Zone 1, from 2300 to 2500 masl; Zone 2, 2500 to 2700 masl; Zone 3, 2700 to 2900 masl and Zone 4 from 2900 to 3100 masl. The equivalence on climatic intervals was also defined for mean annual temperature, precipitation and an annual aridity index (AAI). Values of contemporary AAI occurring at a given altitude by year 2030 were determined, with results suggesting that populations should be shifted 200 to 250 m attitudinally upward, through a program of assisted migration, to realign them to the future climate for which they are adapted.

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Section: Discussionmentioning

confidence: 46%

Altitudinal genetic variation among native Pinus patula provenances: performance in two locations, seed zone delineation and adaptation to climate change

et al. 2014

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“…Height growth was related to the altitude, rainfall and dry season of the seed origin [41], and the greatest growth would occur in populations originating from 1255 m a.s.l., with populations from either lower or higher altitudes having a lower growth [42]. Pinus patula provenances from lower altitudes showed higher growth and a larger number of shoots cycles than provenances from higher altitudes [43,44]. However, in a greenhouse-provenance trial, seedlings showed slightly higher growth potential in provenances from mid-altitude (2700 m a.s.l.)…”

Section: Discussionmentioning

confidence: 99%

“…It has been reported that P. patula provenances from lower altitudes have a higher growth [43]. In our study, there is a correlation among seed origin rainfall and the mean value of the first factor (r = 0.65), related to stem mass fraction, and SLA and the plasticity in the second factor (r = 0.63), related to root and stem dry biomass, indicating that even at local scales there is an adaptive pattern to climate of the integrated phenotypes.…”

Section: Discussionmentioning

confidence: 99%

Intraspecific Variation in Pines from the Trans-Mexican Volcanic Belt Grown under Two Watering Regimes: Implications for Management of Genetic Resources

García

Climent

Pando

et al. 2018

Forests

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Management of forest genetic resources requires experimental data related to the genetic variation of the species and populations under different climatic conditions. Foresters also demand to know how the main selective drivers will influence the adaptability of the genetic resources. To assess the inter-and intraspecific variation and plasticity in seedling drought tolerance at a relevant genetic resource management scale, we tested the changes in growth and biomass allocation of seedlings of Pinus oocarpa, P. patula and P. pseudostrobus under two contrasting watering regimes. We found general significant intraspecific variation and intraspecific differences in plasticity, since both population and watering by population interaction were significant for all three species. All the species and populations share a common general avoidance mechanism (allometric adjustment of shoot/root biomass). However, the intraspecific variation and differences in phenotypic plasticity among populations modify the adaptation strategies of the species to drought. Some of the differences are related to the climatic conditions of the location of origin. We confirmed that even at reduced geographical scales, Mexican pines present differences in the response to water stress. The differences among species and populations are relevant in afforestation programs as well as in genetic conservation activities.

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“…In plantations, P. greggii shows it is well adapted to several ecological conditions, particularly in semiarid conditions (López and Muñoz 1991) and degraded soils (López-Peralta and Sánchez-Cabrera 1996). In favorable conditions, its height and radius show high growth rates (Salazar et al 1999). Plantations of P. greggii have also been established in other countries such as Argentina, Venezuela, South Africa, and Zimbabwe (Dvorak and Donahue 1992).…”

Section: Introductionmentioning

confidence: 99%

Spatial modeling of the ecological niche of Pinus greggii Engelm (Pinaceae): A species conservation proposal in Mexico

Martinez

Díaz

Manzanilla-Quiñones

et al. 2020

Preprint

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Background Studies in Mexico have shown that the genus Pine has always been under evolutionary changes, however currently they have accelerated as a result of human activities. Pinus greggii is a species restricted by particular environmental conditions of the Sierra Madre Occidental, which is of socio-economic importance in terms of wood production and provides environmental services to the ecosystem. Species distribution models are a relevant geospatial tool in decision making, and notable applications exist such as identifying areas of distribution and zones susceptible to climate change. The objectives of this study were: 1) model and quantify the current distribution, and possible future distribution under four scenarios of climate change; 2) identify the most relevant environmental variables that drive changes in distribution; and 3) to propose adequate zones for the species’ conservation in Mexico. Methods 438 records of Pinus greggii from several national and international databases were obtained, and were cleaned up to get rid of duplicates and overestimations in the models. Climatic, edaphic, and topographic variables were used and were generated 100 distribution models for current and future scenarios with Maxent software. Results The model one under replicated of crossvalidation had the best statistic, with an area under the curve of 0.88 and 0.93 for model training and validation, respectively, a partial ROC of 1.94, and a significant Z test (p < 0.01). The current estimated area of Pinus greggii in Mexico was 617,706.04 ha and the most important environmental variables for current distribution were the annual mean temperature, mean temperature of coldest quarter, and slope. For the 2041–2060 models, annual mean temperature, precipitation of coldest quarter, and slope were most important. The future models (2041–2060) predict a decrease in suitable habitat for the species from 48,403.85 (7.8%; HadGEM2-ES RCP 8.5 model) to 134,680.17 ha (21.8%; CNRM-CM5 RCP 4.5). Conclusions The spatial modeling of current and future conditions of the ecological niche of Pinus greggii in this study allows the proposal of two zones for conservation purpose and in situ restoration for the species in northeastern (Nuevo Leon) and central (Hidalgo) Mexico.

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Variación en el patrón de crecimiento en altura de cuatro especies de Pinus en edades tempranas

Cited by 11 publications

References 6 publications

Altitudinal genetic variation among native Pinus patula provenances: performance in two locations, seed zone delineation and adaptation to climate change

Altitudinal genetic variation among native Pinus patula provenances: performance in two locations, seed zone delineation and adaptation to climate change

Intraspecific Variation in Pines from the Trans-Mexican Volcanic Belt Grown under Two Watering Regimes: Implications for Management of Genetic Resources

Spatial modeling of the ecological niche of Pinus greggii Engelm (Pinaceae): A species conservation proposal in Mexico

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