Bud structure and resprouting in coppiced stools of Salix viminalis L., S. eriocephala Michx., and S. amygdaloides Anders

Sennerby-Forsse, L.; Zsuffa, L.

doi:10.1007/bf00195277

Cited by 39 publications

(24 citation statements)

References 30 publications

(26 reference statements)

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“…Although there were some species-specific differences, in general, individuals that were bigger in terms of basimetric area or their greater number of stems produced more resprouts after disturbance [9][10][11]32]. This pattern has been explained by the presence of a greater number of potential buds forming resprouts (bud bank) in larger individuals [4,35,40]. Conversely, the analysis of the effect of pre-fire height of the individual on the height of the dominant new resprouts has been more heterogeneous, with a major influence of basal area in some species and pre-fire height in others (Tab.…”

Section: Discussionmentioning

confidence: 99%

Post-fire resprouting ability of 15 non-dominant shrub and tree species in Mediterranean areas of NE Spain

2007

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-Post-fire resprouting ability of the non-dominant tree and shrub species of the Mediterranean Basin has not yet been experimentally tested, although this group contributes to maintain the richness of Mediterranean plant communities. In this study, we have analyzed the post-fire recovery ability of 15 woody species that occur in relatively low abundance in dry and sub humid Mediterranean areas in NE of Spain. The main goals have been: (i) to determine experimentally the post-fire resprouting ability of these species and (ii) to compare the abundance of these species in areas affected by wildland fires and in unburned areas. We have observed a high resprouting ability after prescribed burning of most species except for Juniperus communis and J. phoenicea which showed a null resprouting. As the species with high resprouting ability showed similar presence in burned and unburned areas, we can conclude that wildfires are not a factor that constrains the presence of these species in Mediterranean woodlands. However, we found a reduction in the abundance of J. communis and J. phoenicea at the regional level after wildland fires. distribution area / prescribed burning / resprouting / woody species / Juniperus Résumé -Capacité à rejeter de souche de 15 espèces d'arbres et d'arbustes secondaires de la région méditerranéenne après incendie. La capacité à rejeter de souche après incendie d'espèces d'arbres et d'arbustes non dominants de la région méditerranéenne est peu connue malgré l'importance de la contribution de ce groupe à la richesse des communautés végétales. Dans cette étude, nous avons analysé la capacité à rejeter de souche de 15 espèces ligneuses présentes en faible abondance dans les zones semi arides et subhumides méditerranéennes du nord-est de l'Espagne. Les principaux objectifs étaient : (i) de déterminer expérimentalement la capacité de rejeter après incendie et (ii) de comparer l'abondance de ces espèces dans des zones brûlées et non brûlées. Toutes les espèces testées présentaient une grande capacité à rejeter de souche à l'exception de Juniperus communis et J. phoenicea, qui ont montré une incapacité complète à rejeter de souche après incendie. Les espèces présentant une grande capacité de rejet présentent des abondances similaires dans des zones brûlées et non brûlées. Nous pouvons conclure que les incendies ne sont pas le facteur limitant leur présence dans les forêts méditerranéennes. Au contraire, les espèces sensibles à faible capacité de rejet comme J. communis et J. phoenicea, ont vu leur abondance baisser à l'échelle régionale après incendie. distribution des espèces / incendies de forêt / rejet de souche / brûlis / Juniperus

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Section: Discussionmentioning

confidence: 99%

Post-fire resprouting ability of 15 non-dominant shrub and tree species in Mediterranean areas of NE Spain

2007

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“…Moreover, the ploidy analysis showed amy0022 to be tetraploid, whereas S. amygdaloides is a diploid species [55]. S. amygdaloides also shows a poor response to coppicing [50], but amy0022 in the NWC shows good regrowth after annual cut-back. AFLP® also questioned the identity of the accession (luc1023) which was added to the NWC as S. pyrifolia Andersson and was subsequently reidentified as S. lucida.…”

Section: Salix Triandra and Subgenus Salixmentioning

confidence: 93%

A Genetic Study of a Salix Germplasm Resource Reveals New Insights into Relationships Among Subgenera, Sections and Species

et al. 2008

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Genetic relationships among 154 genotypes, including 50 species, held within the UK National Willow Collection were analysed using nine primer combinations in an optimised fluorescent amplified fragment length polymorphism (AFLP®) protocol. The AFLP® data resolved relationships at all levels, from discriminating between closely related accessions to differentiating among majority of species, sections and subgenera. The neighbourjoining dendrogram split accessions into three major wellsupported clusters, two of which comprised species of the subgenera Vetrix and Salix. Surprisingly, the third (98% bootstrap support) comprised only Salix triandra accessions. The genetic similarity (GS) between S. triandra and Salix or Vetrix was similar (0.39 and 0.40, respectively) and greater than the genetic similarity between Salix and Vetrix (GS=0.57). Separate clustering of S. triandra is also supported by hierarchical analysis of molecular variance (AMOVA), that partitioned 31.4% of the total variance between these three groups, whereas only 16.3% was partitioned between the two subgenera. These results challenge all current classifications which assign S. triandra to subgenus Salix. Principal coordinate analysis gave corresponding results and facilitated interpretation of relationships among species within sections of the two subgenera, which are discussed. The study included 40 species which have been used in breeding, and the findings will facilitate the choice of parents and interpretation of the results of different crosses, on the basis of more accurate knowledge of genetic relationships. AFLPs® also detected identical genotypes (within the limits of AFLP® error) which should not be used as distinct parents in breeding programmes.

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“…4a). In short-rotation biomass plantations, S. eriocephala is reported to have high coppicing ability [20]. The number of stems per stump of S. bebbiana was reduced from 11 stems per stump for the hand-pruned treatments to five stems for the Bio-Baler treatment; however, the reduction was not statistically significant.…”

Section: Stem Regrowth After Mechanical Harvestmentioning

confidence: 96%

Biomass Harvest from Natural Willow Rings around Prairie Wetlands

et al. 2009

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The study followed the harvest of natural willow from three wetlands using a prototype modified agricultural round baler nicknamed a Bio-Baler. The study reports fuel characteristics and combustion testing of biomass harvested from natural willow rings. Composition of native willow species in the harvested willow rings was determined. We specifically measured regrowth of the biomass and number of regenerated stems per stump 1 year after harvest to determine how different willow species responded to mechanical biomass cutting with the Bio-Baler. The results of combustion testing for the natural willow were essentially similar to those with "conventional" wood chips or planted willows. The ash content was approximately 1.65%, slightly lower than for planted willow plantations. The calorific value of the natural willow was 19.6 MJ kg −1 (dry basis) similar to what is expected for wood and planted willow. Four Salix species (Salix bebbiana Sarg., Salix petiolaris Sm., Salix eriocephala Michx., and Salix discolor Muhl) were identified in the willow rings. Stem biomass increased for all species except S. bebbiana after willow was harvested with the Bio-Baler. Overall, willow regeneration was not affected by mechanical harvesting compared to hand cutting. Regenerated stem density was 93 stems per square meter for mechanically harvested stumps compared to 105 stems per square meter for hand-pruned stumps. Based on the results, biomass harvested from natural willow rings has acceptable fuel characteristics when compared to purpose-grown willows and mechanical harvest with a Bio-Baler does not have a negative effect on willow regeneration.

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Bud structure and resprouting in coppiced stools of Salix viminalis L., S. eriocephala Michx., and S. amygdaloides Anders

Cited by 39 publications

References 30 publications

Post-fire resprouting ability of 15 non-dominant shrub and tree species in Mediterranean areas of NE Spain

Post-fire resprouting ability of 15 non-dominant shrub and tree species in Mediterranean areas of NE Spain

A Genetic Study of a Salix Germplasm Resource Reveals New Insights into Relationships Among Subgenera, Sections and Species

Biomass Harvest from Natural Willow Rings around Prairie Wetlands

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