Silvicultural Options for Mixed-Species Stands

Bauhus, Jürgen; Forrester, David I.; Pretzsch, Hans; Felton, Adam; Pyttel, Patrick; Benneter, Adam

doi:10.1007/978-3-662-54553-9_9

Cited by 39 publications

(29 citation statements)

References 187 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, repeated thinnings have been proposed to prevent forest stands from severe drought stress (Kohler et al ., ; Magruder et al ., ; Sohn et al ., , ; Marqués et al ., ). It will be important to choose a reliable balance between reducing stand density and maintaining complementarity among species, as well as to make use of the various silvicultural options available for management of mixed stands (Bauhus et al ., ). Nevertheless, climate change will lead to greater frequency of disturbance, but this should not be seen only as a threat to forest stability.…”

Section: Discussionmentioning

confidence: 97%

“…For example, a P. menziesii–Tsuga heterophylla 50/50 mixture exhibited underyielding at age 12 under conditions of low density (494 trees ha −1 and 1111 trees ha −1 ), and overyielding at higher densities (1729 trees ha −1 ; Amoroso & Turnblom, ). However, as changes in stand density differentially affect individual tree species in mixtures (Bauhus et al ., ), general thinning prescriptions for mixed stands are difficult to provide. Basically, silvicultural treatments should try to keep the balance between a minimum stand density that ensures a certain level of productivity and interaction between tree species and a maximum density in which competitive effects may outweigh complementarity effects (Bauhus et al ., ).…”

Section: Drivers Of the Diversity–productivity Relationshipmentioning

confidence: 99%

“…However, as changes in stand density differentially affect individual tree species in mixtures (Bauhus et al ., ), general thinning prescriptions for mixed stands are difficult to provide. Basically, silvicultural treatments should try to keep the balance between a minimum stand density that ensures a certain level of productivity and interaction between tree species and a maximum density in which competitive effects may outweigh complementarity effects (Bauhus et al ., ). As is also the case for monocultures, this balance strongly depends on the growth dynamics of the tree species involved and the site conditions (Pretzsch, ).…”

Section: Drivers Of the Diversity–productivity Relationshipmentioning

confidence: 99%

See 2 more Smart Citations

Diversity and forest productivity in a changing climate

2018

View full text Add to dashboard Cite

Contents Summary 50 I. Introduction 50 II. Drivers of the diversity-productivity relationship 51 III. Patterns of the diversity-productivity relationship 55 IV. Responses of mixed stands to climate change 57 V. Conclusions 60 Acknowledgements 61 References 61 SUMMARY: Although the relationship between species diversity and biomass productivity has been extensively studied in grasslands, the impact of tree species diversity on forest productivity, as well as the main drivers of this relationship, are still under discussion. It is widely accepted that the magnitude of the relationship between tree diversity and forest stand productivity is context specific and depends on environmental conditions, but the underlying mechanisms of this relationship are still not fully understood. Competition reduction and facilitation have been identified as key mechanisms driving the diversity-productivity relationship. However, contrasting results have been reported with respect to the extent to which competition reduction and facilitation determine the diversity-productivity relationship. They appear to depend on regional climate, soil fertility, functional diversity of the tree species involved, and developmental stage of the forest. The purpose of this review is to summarize current knowledge and to suggest a conceptual framework to explain the various processes leading to higher productivity of species-rich forests compared with average yields of their respective monocultures. This framework provides three pathways for possible development of the diversity-productivity relationship under a changing climate.

show abstract

Section: Discussionmentioning

confidence: 97%

Section: Drivers Of the Diversity–productivity Relationshipmentioning

confidence: 99%

Section: Drivers Of the Diversity–productivity Relationshipmentioning

confidence: 99%

See 1 more Smart Citation

Diversity and forest productivity in a changing climate

2018

View full text Add to dashboard Cite

show abstract

“…Quantitative silvicultural guidelines are largely limited to even-aged, homogeneous monospecific stand types [15,16], except for very few existing approaches for density management, for example [17,18]. However, most existing concepts, if any, typically emphasize the qualitative steering of the species composition [9,19,20].…”

Section: Introductionmentioning

confidence: 99%

Species Mixing Regulation with Respect to Forest Ecosystem Service Provision

Schwaiger

Poschenrieder

Biber

et al. 2018

Forests

Self Cite

View full text Add to dashboard Cite

The control and maintenance of species composition of mixed stands is a highly relevant objective of forest management in order to provide multifunctionality and climatic resilience. In contrast to this requirement there is, however, an evident lack of quantitative methods for mixture regulation. In this context, we propose an approach for the regulation of mixture proportions that has been implemented in a forest management model. The approach considers species-specific growth characteristics and takes into account the mixing effect on stand density. We present five exemplary simulations that apply the regulation. Each simulation maintains one of five desired species compositions. In these simulations, we consider the species European beech and Norway spruce under good site conditions, thus representing the most prominent mixed stands in Central Europe. Based on this model experiment, we analyze the potential benefit of controlled mixing regulation for achieving desired levels and combinations of ecosystem service provision, in particular productivity, diversity, and groundwater recharge. We found that a constant 50% basal area share of beech (equivalent growing space share of 80% to 70% depending on stand age) provided the most balanced supply of ecosystem services. Prominently, groundwater recharge considerably decreased when beech basal area shares were held below 50%. We discuss the ecological and practical implications of the regulation approach and different mixing shares.

show abstract

“…Additionally, silvicultural regimes for mixed stands are inevitably more challenging compared with those developed for monospecific stands, and their complexity and operation cost typically increases with the compositional and stand structural heterogeneity (Bauhus et al, 2017b;O'Hara, 2014). However, tree species mixtures with similar growth rates and shade tolerance, as the species analyzed in this thesis, could require less silvicultural interventions through repeated thinning for maintaining the benefit of species interactions than for example mixtures with light-demanding species that grow slower or reach a lower maximum height than competing shade-tolerant species (Kerr, 2004).…”

Section: Implications For Forest Management and Future Research Questmentioning

confidence: 99%

Mixed stands growth dynamics of Scots pine and Maritime pine: species complementarity relationships and growth effects

Salazar¹,

Guillermo²

View full text Add to dashboard Cite

I am deeply grateful to all my friends in Palencia for making my time there special and for revealing me the secret wonders of a small city in the middle of a plateau. Will never forget about the crunchy "sopas de ajo". Thanks to my lab mates Wilson, Jorge, Nico and Sara for all the modeling and programming help, but mainly for the team complaining and laughing. I enjoyed all the scientific discussions but mostly the random talks with all my Uni friends. Thanks to them for sharing day-today life with countless amounts of coffee and chasquis; this work would be impossible without them. Thank you,

show abstract

Silvicultural Options for Mixed-Species Stands

Cited by 39 publications

References 187 publications

Diversity and forest productivity in a changing climate

Diversity and forest productivity in a changing climate

Species Mixing Regulation with Respect to Forest Ecosystem Service Provision

Mixed stands growth dynamics of Scots pine and Maritime pine: species complementarity relationships and growth effects

Contact Info

Product

Resources

About