Rooting ability of Dorycnium spp. under different conditions

Alegre, Julio; Toledo, Juliane Laner de; Martı́nez, A. Pérez; Mora, Omar Franco; Andres, E. F. de

doi:10.1016/s0304-4238(98)00129-0

Cited by 12 publications

(2 citation statements)

References 4 publications

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“…Eighteen months after the fire in NT and CL, the most commons species were D. pentaphyllum and Smilax aspera L., while the abundance of R. peregrina had fallen slightly. D. pentaphyllum propagates readily and has a good capacity to resprout after fire (Alegre et al 1998), being favoured by post-wildfire management. Moya et al (2009) observed that this species was abundant in post-wildfire thinned areas.…”

Section: Richness Evenness Density Diversity and Maximum Diversitymentioning

confidence: 99%

Effect of pre- and post-wildfire management practices on plant recovery after a wildfire in Northeast Iberian Peninsula

2019

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Fire and pre-or post-fire management practices shape the distribution and richness of plant species. Here, the effects of pre-and post-fire management on vegetation recovery were studied at different times, up to 18 months after a wildfire. Two months after a 2015 wildfire, 18 study plots were established (three 4-m 2 plots for each treatment), vegetation regrowth was monitored and vegetal species richness (S), evenness (I T ), density (D), diversity (H 0 ) and maximum diversity (HMax) after 2, 10 and 18 months. The treatments were (1) control, unaffected by 2015 wildfire; (2) no treatment (NT), burned in 2015 wildfire and not managed; (3) managed in 2005 and burned in 2015 (M05B); (4) managed in 2015, 2 months before wildfire (M15B); (5) cut and manual removal after the 2015 wildfire (CR); (6) cut and no trunk removal randomly deposited on topsoil after the 2015 wildfire (CL). All the treatments were carried out in a Pinus halepensis Miller forest. At 10 and 18 months after the wildfire, vegetation recovery was greater in NT, CR and CL plots than in M05B and M15B the plots. By 18 months after the wildfire, Brachypodium retusum (Pers.) P. Beauv. and Rosmarinus officinalis L. were still dominant, especially in M15B, corroborating the belief that pre-fire treatment reduced ecosystem resilience and vegetal recovery compared to the NT and post-fire managed plots. Richness was significantly lower 10 months after wildfire in control plots, and I T was significantly higher in that inventory than previously in M15B. Eighteen months after the wildfire, H 0 was significantly lower in M15B. Ten months post-wildfire, HMax was significantly lower in the control plots. Eighteen months after the wildfire, HMax, was significantly higher in CR, CL and M05B than in the control and M15B plots. Overall, pre-fire management was detrimental to post-fire vegetation recovery, while manual post-fire management proved beneficial.

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Section: Richness Evenness Density Diversity and Maximum Diversitymentioning

confidence: 99%

Effect of pre- and post-wildfire management practices on plant recovery after a wildfire in Northeast Iberian Peninsula

2019

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“…Rooting ability was usually measured by rooting%, root number, and root length, as demonstrated by Al-Saqri and Alderson [28] and Alegre et al [29]. This study aimed to identify the suitable size of root diameter (RD) of aerial roots, the most effective root wounding methods (WMs), and the optimal concentration of auxin spray to induce ARs by spraying on wounds for adventitious roots regeneration on the aerial roots or prop roots of F. elastica.…”

Section: Introductionmentioning

confidence: 99%

The Induction of Adventitious Roots Regeneration before Transplanting Rootless Ficus elastica Heritage Tree

Lo³

et al. 2020

Forests

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Heritage trees carry both botanical and historical value for a city’s resilience and sustainability and hence are precious and unique. Their transplant is costly and very rare due to tremendous cost and 100% survival requirement by law. Rootless transplant is even more detrimental to the heritage tree due to removal of roots infected by brown root rot (BRR) before transplanting. This study examined the adventitious roots (AR) induction ability of the Ficus elastica Roxb. heritage tree infected with BRR. The experimental design considered three factors: root diameter (RD), wounding method (WM), and auxin solution on aerial roots under fractional factorial experiment in completely randomized design (CRD). There were four RD groups: RDI (RD < 2 cm), RDII (2 ≤ RD ≤ 4.3 cm), RDIII (4.3 < RD ≤ 22), and RDIV (RD > 22); three WMs: cutting off (CF), girdling (GD), and rectangular shape peeling (RP) of aerial roots; and three auxin solutions: 2000 mg·L−1 IBA(Indole-3-butyric acid) (2B), 2000 mg·L−1 IBA + 2000 mg·L−1 NAA(1-Naphthaleneacetic acid) (2NB), and 4000 mg·L−1 IBA (4B) plus water as control (C). The number of rooting wounds, number of roots, and the mean length of the three longest adventitious roots in each wound were recorded to evaluate the AR rooting performance. Twenty four treatment combinations including 328 wounds were tested. The results showed that rooting ability was significantly correlated with RD and WM. Smaller RDs had better rooting and declined with increased RDs. CF had the best rooting followed by GD and then RP. Auxin solution did not significantly affect the rooting ability. It may be due to the abundant endogenous auxin in the heritage tree, which mitigated the effect of exogenous auxin for AR induction. We conclude that cutting off small-diameter aerial roots is the best approach to induce ARs from rootless F. elastica heritage trees to enhance transplantation success.

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Methodological framework to select plant species for controlling rill and gully erosion: application to a Mediterranean ecosystem

Baets

Poesen

Reubens

et al. 2009

Earth Surf Processes Landf

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Many studies attribute the effects of vegetation in reducing soil erosion rates to the effects of the above-ground biomass. The effects of roots on topsoil resistance against concentrated flow erosion are much less studied. However, in a Mediterranean context, where the above-ground biomass can temporarily disappear because of fire, drought or overgrazing, and when concentrated flow erosion occurs, roots can play an important role in controlling soil erosion rates. Unfortunately, information on Mediterranean plant characteristics, especially root characteristics, growing on semi-natural lands, and knowledge of their suitability for gully erosion control is often lacking. A methodological framework to evaluate plant traits for this purpose is absent as well. This paper presents a methodology to assess the suitability of plants for rill and gully erosion control and its application to 25 plant species, representative for a semi-arid Mediterranean landscape in southeast Spain. In this analysis determination of suitable plants for controlling concentrated flow erosion is based on a multi-criteria analysis. First, four main criteria were determined, i.e. (1) the potential of plants to prevent incision by concentrated flow erosion, (2) the potential of plants to improve slope stability, (3) the resistance of plants to bending by water flow and (4) the ability of plants to trap sediments and organic debris. Then, an indicator or a combination of two indicators was used to assess the scores for the four criteria. In total, five indicators were selected, i.e. additional root cohesion, plant stiffness, stem density, the erosion-reducing potential during concentrated flow and the sediment and organic debris obstruction potential. Both above-and below-ground plant traits were taken into account and measured to assess the scores for the five indicators, i.e. stem density, sediment and organic debris obstruction potential, modulus of elasticity of the stems, moment of inertia of the stems, root density, root diameter distribution, root area ratio and root tensile strength. The scores for the indicators were represented on amoeba diagrams, indicating the beneficial and the weak plant traits, regarding to erosion control. The grasses Stipa tenacissima L. and Lygeum spartum L. and the shrub Salsola genistoides Juss. Ex Poir. amongst others, were selected as very suitable plant species for rill and gully erosion control. Stipa tenacissima can be used to re-vegetate abandoned terraces as this species is adapted to drought and offers a good protection to concentrated flow erosion and shallow mass movements. Lygeum spartum can be used to vegetate concentrated flow zones or to obstruct sediment inflow to channels at gully outlets. Stipa tenacissima and Salsola genistoides can be used to stabilize steep south-facing slopes. The methodology developed in this study can be applied to other plant species in areas suffering from rill and gully erosion.

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Rooting ability of Dorycnium spp. under different conditions

Cited by 12 publications

References 4 publications

Effect of pre- and post-wildfire management practices on plant recovery after a wildfire in Northeast Iberian Peninsula

Effect of pre- and post-wildfire management practices on plant recovery after a wildfire in Northeast Iberian Peninsula

The Induction of Adventitious Roots Regeneration before Transplanting Rootless Ficus elastica Heritage Tree

Methodological framework to select plant species for controlling rill and gully erosion: application to a Mediterranean ecosystem

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