Interactive effects of competition and water availability on above- and below-ground growth and functional traits of European beech at juvenile level

Fruleux, Alexandre; Bonal, Damien; Bogeat‐Triboulot, Marie‐Béatrice

doi:10.1016/j.foreco.2016.09.038

Cited by 11 publications

(5 citation statements)

References 51 publications

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“…Fine roots for the entire diameter class (< 2 mm Ø) did not show any significant morphological effects of mixture or irrigation, not per soil depth and not for any summed parameters. Similarly to our observations, in a study with mixtures (up to five tree species) with contrasting fine root morphologies, there were no adaptations in morphology with increasing diversity (Meinen et al 2009b;Fruleux et al 2016). Also similar to previous studies, irrigation had no effect on fine root morphology of the entire <2 mm fine root class (Leuschner et al 2004;Brunner et al 2019).…”

Section: General Considerationssupporting

confidence: 87%

Effect of tree mixtures and water availability on belowground complementarity of fine roots of birch and pine planted on sandy podzol

Altinalmazis-Kondylis

Muessig

Meredieu

et al. 2020

Plant Soil

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Aims We investigated whether tree species growing in mixtures and under different water supply would segregate their fine roots vertically, produce more fine roots overall, or only in specific soil layers. Methods We examined the biomass, morphology, and distribution of fine roots down to 90 cm (forest floor, 0-5, 5-15, 15-30, 30-60, 60-90 cm) in pure and mixed stands of 10-year-old birch and pine trees, planted on a sandy podzol with discontinuous hardpan and seasonal high water table, following a randomized block design with four blocks receiving irrigation and four blocks left unirrigated during summer. Results Our results did not show any vertical root segregation between birch and pine in mixed plots. None of the species overyielded belowground throughout, but pine developed more roots in the top soil layer under irrigation. Both species had shallower fine root distributions in wet conditions, especially birch that was more plastic than pine in response to irrigation. Conclusions Both species followed similar ecological strategies, occupying and competing for the same layers of the soil profile, under both control and irrigated conditions. However, the greater allocation of pine roots at the top soil horizons under irrigated conditions suggests locally favourable niches can lead to depthspecific asymmetric competition. This sheds new light on vertical niche partitioning of young tree mixtures under varying environmental conditions.

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Section: General Considerationssupporting

confidence: 87%

Effect of tree mixtures and water availability on belowground complementarity of fine roots of birch and pine planted on sandy podzol

Altinalmazis-Kondylis

Muessig

Meredieu

et al. 2020

Plant Soil

View full text Add to dashboard Cite

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“…Facilitation processes seem to be species and locale specific. A study conducted by Fruleux et al [13] combining Fagus sylvatica L. and Quercus petraea (Matt) Liebl. showed that under dry conditions, facilitation processes of Quercus prevailed over Fagus, while under well irrigated conditions the opposite was observed.…”

Section: Introductionmentioning

confidence: 99%

Ecological Interactions between Cork Oak (Quercus suber L.) and Stone Pine (Pinus pinea L.): Results from a Pot Experiment

Correia

Galla

Nunes

et al. 2018

Forests

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Portuguese cork oak (Quercus suber L.) extended mortality and lack of regeneration have been the drivers of important changes in the traditional cork oak woodlands (savanna-like) montado. The decrease in tree cover fosters the mixture with stone pine (Pinus pinea L.) for pine-nut production providing shelter for oak regeneration. The use of nurse species, namely pines, to help Quercus spp. regeneration is known, but whether cork oak could be favoured by the mixture with stone pine remains a question. A pot experiment with cork oak (Qs) and stone pine (Pp) growing in inter-(Qs×Pp) and intraspecific mixtures (Qs×Qs, Pp×Pp) combinations and in monocultures, was installed in a greenhouse in Lisbon, Portugal. Morphological measurements of above- and belowground biomass components were carried out in 3 harvesting campaigns at 4, 8 and 11 months. Leaf nitrogen content and mycorrhizal symbiotic formations were quantified. During the seedling stage and under comfort water and nutrient conditions, the root growth and morphology of Qs and Pp showed contrasting patterns, suggesting complementary soil exploitation interactions in interspecific mixtures and potential competition in intraspecific mixtures. The mixture of Qs with Pp seems to be advantageous in the first stages of plant growth as Pp develop abundant mycorrhizae symbiosis formations which elicit mycorrhization of Qs plants coexisting in the same pot. This study suggests that stone pine can potentially help in establishing cork oak as seedlings, possibly facilitating nutrient uptake through mycorrhizae. However, complementary field studies are needed.

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“…The underyielding for beech could be attributed to Douglas-fir suppressing beech stronger on rich soils by producing a more and denser leaf area. Additionally, there could be strong intra-specific competition for beech at below-ground, as detected during beech seedling stage (Fruleux et al, 2016). These results are opposite to the findings that stronger overyielding occurs on more favourable conditions (Thurm et al, 2016a;Thurm and Pretzsch, 2016).…”

Section: Discussionmentioning

confidence: 64%

“…Another reason, as reported in previous studies, is that beech may be a more successful competitor for above and belowground resources than oak ( Rewald and Leuschner, 2009;Lebourgeois et al, 2013). Thus strong intra-specific competition for beech led to underyielding of beech and even caused underyielding of the total stand (Fruleux et al, 2016).…”

Section: Discussionmentioning

confidence: 71%

“…A more efficient use of below-ground resources was speculated for the oak-beech mixtures, which allows for a better exploration of the soil profile (Manso et al, 2015). This was also detected in a seedling experiment where oak facilitated beech seedlings under water limiting sites (Fruleux et al, 2016). However, on rich soils, trees of these two species may not benefit from complementarity effect in light because they had similar dominant heights, suggesting that their crowns are at similar vertical positions and may not effectively partition the light environment (Appendix 3.4c).…”

Interactive effects of competition and water availability on above- and below-ground growth and functional traits of European beech at juvenile level

Cited by 11 publications

References 51 publications

Effect of tree mixtures and water availability on belowground complementarity of fine roots of birch and pine planted on sandy podzol

Effect of tree mixtures and water availability on belowground complementarity of fine roots of birch and pine planted on sandy podzol

Ecological Interactions between Cork Oak (Quercus suber L.) and Stone Pine (Pinus pinea L.): Results from a Pot Experiment

Species mixing effects on forest productivity in the Netherlands

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