Development of cork oak (Quercus suber L.) seedlings in response to tree shelters and mulching in northwestern Tunisia

Mechergui, Taher; Pardos, Marta; Boussaidi, Naceur; Hasnaoui, Brahim; Jacobs, Douglass F.

doi:10.1007/s11676-013-0345-x

Cited by 19 publications

(10 citation statements)

References 34 publications

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“…There was no significant difference compared to the 150 cm shelters. These classic effects of stimulation of height growth of seedlings have been reported by many authors for many tree species and climates [19,20,23,24,26,[34][35][36][37][38]. Similar results were obtained for oak trees in the south of England [9], for walnut in the south of France [14], and for the argan tree after one growing season under nonlimiting water conditions [39].…”

Section: Height Growthsupporting

confidence: 79%

Effects of Tree Shelters on the Survival and Growth ofArgania spinosaSeedlings in Mediterranean Arid Environment

Defaa

Elantry

Alami

et al. 2015

International Journal of Ecology

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The argan tree is endemic species of Morocco. It occupies an area of more than 8700 km2and plays essential ecological and economical roles. In spite of their value, the argan woodlands are subject to rapid and uncontrolled degradation during the last decades, mainly due to overgrazing and systematic collection of argan nuts. The present study was carried out to investigate the effects of two types of tree shelters on survival and growth ofArgania spinosaseedlings planted in the southwest of Morocco in order to improve the results of reforestation programs which usually end by repeated failures. The experiment was conducted in the Mesguina forest for two growing seasons after transplantation in the field. After two years, the use of tree shelters significantly increased tree survival and allowed a gain of 20%. Height growth was positively affected by tree shelters. The use of tree shelters showed no significant decrease in basal diameter. In contrast, the height to diameter ratios of sheltered trees were much higher compared to the control. Thus, the use of the tree shelters could aid the early establishment and growth ofArgania spinosaunder conditions similar to those of the experiment.

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Section: Height Growthsupporting

confidence: 79%

Effects of Tree Shelters on the Survival and Growth ofArgania spinosaSeedlings in Mediterranean Arid Environment

Defaa

Elantry

Alami

et al. 2015

International Journal of Ecology

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“…For that reason perhaps there was a growth stimulation of both established GU for cork oak, which allows plant to profit the possible maximum from the available light, but only of the first GU for zeen oak. The increase in GU length accompanied by a decrease in the polycyclism rate observed in this study for cork oak confirms the results of Chaar et al [41] and Mechergui et al [37], who reported for the same species that GU length tends to be shorter as the polycyclism rate increases.…”

Section: Discussionsupporting

confidence: 92%

“…In addition, studies investigating the growth response of oak seedlings to either water stress or shade were often limited to height, diameter and biomass measurements [30,31,32,33]. However, like other oak species [34,35], zeen oak [36] and cork oak [37] have a typically rhythmic pattern of height growth. The study of the periodic height growth pattern of oak species allows the main stem to be divided on other morphological entities called the growth unit (GU) and gives useful information on this growth response characterization.…”

Section: Introductionmentioning

confidence: 99%

Impact of moderate drought and shading on morphological traits of Quercus suber L. and Quercus canariensis Willd seedlings

Mechergui¹,

Pardos²

2016

IOSR

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“…Relative growth in height and diameter for container stock with shelters agreed with the literature, whereby relative height growth was positively affected and relative diameter growth was negatively affected by shelters. Shelters have been shown to increase height growth and reduce diameter growth in Quercus species [44,49] due to alteration of above and belowground biomass allocation by protected seedlings. Seedlings in shelters allocate greater resources toward height growth, which reduces photosynthate available for root growth.…”

Section: Growthmentioning

confidence: 99%

Hardwood Species Show Wide Variability in Response to Silviculture during Reclamation of Coal Mine Sites

Schempf

Jacobs

2020

Forests

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Coal is a significant energy source for the United States, and reclamation of surface mined lands is required under the Surface Mining Control and Reclamation Act of 1977. Reforestation of mined lands is challenging due to soil substrate properties including soil compaction, herbaceous competition, and animal browse, necessitating silvicultural treatments to help overcome such limiting factors. We investigated the field performance of black walnut (Juglans nigra L.), northern red oak (Quercus rubra L.), and swamp white oak (Quercus bicolor Willd.) planted on two mine reclamation sites in southern Indiana, USA, and evaluated the interactions of nursery stocktypes (container and bareroot), herbicide application, and tree shelters. Two-year survival averaged 80% across all species and stocktypes. Container stocktype had greater relative height and diameter growth (i.e., relative to initial size at planting), whereas bareroot had greater absolute height and diameter growth corresponding to initial stocktype differences. Shelter use increased height growth and reduced diameter growth across both stocktypes. Swamp white oak (Q. bicolor) had the highest survival rate and field performance regardless of silvicultural treatment, whereas red oak (Q. rubra) and black walnut (J. nigra) showed strong early regeneration responses to silvicultural treatments. Container seedlings showed promise as an alternative to bareroot seedlings to promote early growth on mine reclamation sites. Species-specific responses documented here indicate the need to consider the ecology and stress resistance of target species in developing cost-effective silvicultural prescriptions.

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Development of cork oak (Quercus suber L.) seedlings in response to tree shelters and mulching in northwestern Tunisia

Cited by 19 publications

References 34 publications

Effects of Tree Shelters on the Survival and Growth ofArgania spinosaSeedlings in Mediterranean Arid Environment

Effects of Tree Shelters on the Survival and Growth ofArgania spinosaSeedlings in Mediterranean Arid Environment

Impact of moderate drought and shading on morphological traits of Quercus suber L. and Quercus canariensis Willd seedlings

Hardwood Species Show Wide Variability in Response to Silviculture during Reclamation of Coal Mine Sites

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