From genetic gain to economic gain: simulated growth and financial performance of genetically improved Pinus sylvestris and Pinus pinaster planted stands in France, Finland and Sweden

Author:

Serrano-León Hernán1,Ahtikoski Anssi2,Sonesson Johan3,Fady Bruno4,Lindner Marcus5,Meredieu Céline67,Raffin Annie6,Perret Sandrine8,Perot Thomas8,Orazio Christophe19

Affiliation:

1. Planted Forest Facility, European Forest Institute, F-33610 Cestas, France

2. Luke - Natural Resources Institute Finland, FI-90014 Oulu, Finland

3. SKOGFORSK- the Forestry Research Institute of Sweden, 75183 Uppsala, Sweden

4. INRAE, URFM, F-84914 Avignon, France

5. Resilience Programme, European Forest Institute, 53113 Bonn, Germany

6. INRAE, UEFP, F-33610 Cestas, France

7. INRAE, Univ. Bordeaux, BIOGECO, F-33610 Cestas, France

8. INRAE, EFNO, F-45290 Nogent-sur-Vernisson, France

9. IEFC - Institut Européen de la Forêt Cultivée, F-33610 Cestas, France

Abstract

Abstract The translation of genetic gains into economic gains is important for evaluating the impact of using genetically improved forest reproductive material (FRM) in the forest sector. However, few studies based on European forests have been published to date. Here, we analyse the stand-level wood production and financial performance of planting genetically improved FRM in even-aged planted forests focusing on four European case studies with advanced breeding programme material and different management contexts: Scots pine (Pinus sylvestris L.) in southern Finland, central Sweden and central France, and maritime pine (Pinus pinaster Ait.) in southwestern France. The growth of improved stands was simulated using species-specific growth models by incorporating two levels of expected genetic gains (present and next generations of seed orchards, varying from 7 to 40 per cent depending on the breeding programme) into the estimated mean annual volume increment over a rotation (m3 ha−1 yr−1). For each level of genetic gain, we tested the plantation of improved FRM managed with two silvicultural scenarios (maintaining the standard baseline rotation and thinning regime vs shorter rotation through the earlier achievement of the recommended felling criteria) in comparison with the plantation of the reference unimproved material (absence of genetic gain) managed according to the standard silvicultural regime. The use of improved FRM resulted in a larger financial performance in terms of soil expectation value (SEV € ha−1, discount rate 3 per cent) than planting unimproved reference material in all case studies and silvicultural scenarios for different wood price contexts (SEV gain from +20 to +190 per cent depending on the genetic and silvicultural context). The challenges associated with the economic assessment of realized gains from genetically improved FRM are discussed. We argue that silvicultural guidelines should be adapted to the use of improved FRM in order to gain better financial performance and flexible silvicultural response of planted forests to future environmental and socio-economic changes.

Funder

European Union’s Horizon 2020

French Ministry of Agriculture and the Nouvelle Aquitaine

European Forest Institute, Planted Forest Facility

Publisher

Oxford University Press (OUP)

Subject

Forestry

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