Spatio-temporal heterogeneity effects on seedling growth and establishment in four Quercus species

González‐Rodríguez, Victoria E.; Villar, Rafael; Casado, Raquel; Suárez-Bonnet, Elena; Quero, José L.; Navarro-Cerrillo, Rafael M.

doi:10.1007/s13595-011-0069-z

Cited by 26 publications

(14 citation statements)

References 62 publications

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“…Cover of herbs significantly hampered the mean growth of saplings, likely due to competition for water as well [51], [33], being less evident in places with cooler temperatures (less stressful conditions). However, at warmer sites, growth increased with a higher cover of herbs, suggesting a stimulation of shoot elongation in more stressful sites, in order to escape from competition in the same way as shade conditions do [53], [54].…”

Section: Discussionmentioning

confidence: 99%

Direct and Indirect Effects of Climate on Demography and Early Growth of Pinus sylvestris at the Rear Edge: Changing Roles of Biotic and Abiotic Factors

et al. 2013

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Global change triggers shifts in forest composition, with warming and aridification being particularly threatening for the populations located at the rear edge of the species distributions. This is the case of Scots pine (Pinus sylvestris) in the Mediterranean Basin where uncertainties in relation to its dynamics under these changing scenarios are still high. We analysed the relative effect of climate on the recruitment patterns of Scots pine and its interactions with local biotic and abiotic variables at different spatial scales. Number of seedlings and saplings was surveyed, and their annual shoot growth measured in 96 plots located across altitudinal gradients in three different regions in the Iberian Peninsula. We found a significant influence of climate on demography and performance of recruits, with a non-linear effect of temperature on the presence of juveniles, and a positive effect of precipitation on their survival. Abundance of juveniles of P. sylvestris that underwent their first summer drought was skewed towards higher altitudes than the altitudinal mean range of the conspecific adults and the optimum elevation for seedlings' emergence. At local level, light availability did not influence juveniles' density, but it enhanced their growth. Biotic interactions were found between juveniles and the herb cover (competition) and between the number of newly emerged seedlings and shrubs (facilitation). Results also highlighted the indirect effect that climate exerts over the local factors, modulating the interactions with the pre-existing vegetation that were more evident at more stressful sites. This multiscale approach improves our understanding of the dynamics of these marginal populations and some management criteria can be inferred to boost their conservation under the current global warming.

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Section: Discussionmentioning

confidence: 99%

Direct and Indirect Effects of Climate on Demography and Early Growth of Pinus sylvestris at the Rear Edge: Changing Roles of Biotic and Abiotic Factors

et al. 2013

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“…This uncoupling between the composition of the canopy and the community of seedlings and saplings has been observed in other Mediterranean forests (Pérez-Ramos and Marañón 2012), which supports the possibility of future shifts in species composition. We propose that the extreme drought event could also have resulted in lower functional diversity (F Rich ) in the recruits since it could have affected more severely the early life-history stages of some species (Vallejo et al 1999;González-Rodríguez et al 2011). In addition, when exploring the more relevant traits of the recruits, we found higher community values of seed mass at the seedling and juvenile stages than at the adult stage.…”

Section: Recruitment Community Structure and Functional Diversitymentioning

confidence: 64%

Composición y diversidad funcional de plantas leñosas mediterráneas: desde la hoja a la comunidad

Riva¹

2016

ECOS

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“…In the old elds with tree remnants, Q. ilex and Q. suber showed similar seedling densities, and although the interaction was not signi cant, the abundance of Q. ilex large seedlings was 5-6 fold higher than that of Q. suber. These results indicate that Q. ilex has a higher seedling survival rate and more likely to reach the sapling stage, probably due to their higher tolerance to shade (Sevilla 2008), and in particular their greater tolerance to hydric stress during the summer (Plieninger et al 2010, González-Rodríguez et al 2011, San-Eufrasio et al 2020). Thus, although Q. suber trees dominate the landscape of our study area, the results indicate that Q. ilex can produce a greater number of young trees as compared to Q. suber (Fig.…”

Section: Resultsmentioning

confidence: 89%

Regeneration Dynamics in Fragmented Landscapes at the Leading Edge of Distribution: Quercus Suber L. as A Study Case

Montero-Muñoz

Ureña

Navarro

et al. 2021

Preprint

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AimsWe studied the regeneration dynamics of woodlands and abandoned old fields in a landscape dominated by Quercus suber in its lower limits for rainfall and temperature. Two hypotheses were established: (1) recruitment of Q. suber is restricted more by abiotic variations than other species adapted to more extreme Mediterranean conditions; and (2) decreases in precipitation reduce growth, but temperature positively affects growth in the leading cold edge of this species distribution area.MethodsWe selected nine sites containing forest stands and old fields with and without tree remnants, and analyzed stand structure, soil parameters and tree growth.ResultsSuccession was arrested in plots without tree remnants after cultivation abandonment. By contrast, remnant trees were accelerators of forest recovery. Tree cover played a fundamental role in Quercus recruitment throughout seed dispersal and facilitation effects that ameliorate summer drought. However, soil variables also significantly explained much of the variance observed and are important for understanding differences in regeneration. Winter and spring precipitation exerted a positive effect on tree growth, as well as temperatures during winter/spring and September.ConclusionsRegeneration dynamics are modeled by the density of tree cover in the cold and dry edge of the distribution area of Q. suber where Q. ilex is increasing in abundance. Although temperature has a positive effect on the tree growth of Q. suber, when demographic processes are considered, decreases in water availability likely play a critical role in Q. ilex recruitment. This in turn changes dominance hierarchies, especially in abandoned areas with little or no tree cover.

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Spatio-temporal heterogeneity effects on seedling growth and establishment in four Quercus species

Abstract: International audienc

Cited by 26 publications

References 62 publications

Direct and Indirect Effects of Climate on Demography and Early Growth of Pinus sylvestris at the Rear Edge: Changing Roles of Biotic and Abiotic Factors

Direct and Indirect Effects of Climate on Demography and Early Growth of Pinus sylvestris at the Rear Edge: Changing Roles of Biotic and Abiotic Factors

Composición y diversidad funcional de plantas leñosas mediterráneas: desde la hoja a la comunidad

Regeneration Dynamics in Fragmented Landscapes at the Leading Edge of Distribution: Quercus Suber L. as A Study Case

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