Distinguishing between the effects of changes in temperature and light climate using provenance trials with <i>Pinus</i> <i>sylvestris</i> in Sweden

Persson, Bengt; Beuker, Egbert

doi:10.1139/x96-222

Cited by 34 publications

(32 citation statements)

References 8 publications

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“…Similar to the effects of minor climate change (RCP2.6), but ignoring the effect of CO 2 fertilization, the growth of Scots pine increases based on the findings of provenance trials when transferring southern provenances slightly northwards (i.e., one to two latitudes, e.g., [51][52][53]). Nevertheless, such transfer response is smaller than shown in our calculations.…”

Section: Discussionmentioning

confidence: 99%

Temporal and Spatial Change in Diameter Growth of Boreal Scots Pine, Norway Spruce, and Birch under Recent-Generation (CMIP5) Global Climate Model Projections for the 21st Century

Kellomäki

Strandman

Heinonen

et al. 2018

Forests

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Abstract:We investigated how climate change affects the diameter growth of boreal Scots pine (Pinus sylvestris L.), Norway spruce (Picea abies (L.) H. Karst.), and silver birch (Betula pendula Roth) at varying temporal and spatial scales. We generated data with a gap-type ecosystem model for selected locations and sites throughout Finland. In simulations, we used the current climate and recent-generation (CMIP5) global climate model projections under three representative concentration pathways (RCPs) forcing scenarios for the period 2010-2099. Based on this data, we developed diameter growth response functions to identify the growth responses of forests under mild (RCP2.6), moderate (RCP4.5), and severe (RCP8.5) climate change at varying temporal and spatial scales. Climate change may increase growth primarily in the north, with a clearly larger effect on birch and Scots pine than Norway spruce. In the south, the growth of Norway spruce may decrease largely under moderate and severe climate change, in contrast to that of birch. The growth of Scots pine may also decrease slightly under severe climate change. The degree of differences between tree species and regions may increase along with the severity of climate change. Appropriate site-specific use of tree species may sustain forest productivity under climate change. Growth response functions, like we developed, provide novel means to take account of climate change in empirical growth and yield models, which as such include no climate change for forest calculations.

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Section: Discussionmentioning

confidence: 99%

Temporal and Spatial Change in Diameter Growth of Boreal Scots Pine, Norway Spruce, and Birch under Recent-Generation (CMIP5) Global Climate Model Projections for the 21st Century

Kellomäki

Strandman

Heinonen

et al. 2018

Forests

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“…For Scots pine in Sweden and Finland, temperature sum is well correlated with forest yield (Beuker 1994;Morén and Perttu 1994;Persson and Beuker 1997) and has been used as a key site descriptor in previous transfer-effect models (Persson and Ståhl 1993;Persson 1994;Andersson et al 2007). Due to the large heterogeneity in both time and space of the field data used, age of assessment (cf.…”

Section: Characteristics Of the Transfer Effect Models And Comparisonmentioning

confidence: 99%

“…Studies of Scots pine (Pinus sylvestris L.) under boreal conditions have shown that global warming could potentially have a large positive effect on productivity (Bergh et al 2003;Bergh et al 2010), although this potential is only achievable in practice if the reaction of different forest regeneration materials (FRM) to climate change is known and if well-adapted genetic materials are used (Beuker 1994;Persson and Beuker 1997;Persson 1998;Rehfeldt et al 2002). Forest tree provenance experiments have been established to evaluate adaptive properties and performance of FRM by testing provenances in common garden trials, where both provenances and trial locations ideally should cover a wide range of environments and climatic conditions.…”

Section: Introductionmentioning

confidence: 99%

Scots pine transfer effect models for growth and survival in Sweden and Finland

Berlin¹,

Persson²,

Jansson³

et al. 2016

Silva Fenn.

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Highlights• Scots pine transfer effect models for growth and survival, valid in both Sweden and Finland have been developed. • The models use high-resolution gridded climate data and can predict performance in future climatic conditions. • The models perform well both for unimproved and genetically improved material and can be used to develop deployment recommendations of contemporary forest regeneration material in Sweden and Finland. AbstractIn this study, we developed models of transfer effects for growth and survival of Scots pine (Pinus sylvestris L.) in Sweden and Finland using a general linear mixed-model approach. For model development, we used 378 provenance and progeny trials with a total of 276 unimproved genetic entries (provenances and stand seed check-lots) distributed over a wide variety of climatic conditions in both countries. In addition, we used 119 progeny trials with 3921 selected genetic entries (open-and control pollinated plus-tree families) for testing model performance. As explanatory variables, both climatic indices derived from high-resolution gridded climate datasets and geographical variables were used. For transfer, latitude (photoperiod) and, for describing the site, temperature sum were found to be main drivers for both survival and growth. In addition, interaction terms (between transfer in latitude and site altitude for survival, and transfer in latitude and temperature sum for growth) entail changed reaction patterns of the models depending on climatic conditions of the growing site. The new models behave in a way that corresponds well to previous studies and recommendations for both countries. The model performance was tested using selected plus-trees from open and control pollinated progeny tests. Results imply that the models are valid for both countries and perform well also for genetically improved material. These models are the first step in developing common deployment recommendations for genetically improved forest regeneration material in both Sweden and Finland.

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“…In marginal forests, the frequency of extreme climatic episodes (e.g., extremely cold periods, drought and storms) is probably more significant for the survival and performance of seedlings and trees than is variation in the thermal conditions of the growing season. Generally, mature trees are not as sensitive to climatic stress as seedlings are (Brubaker, 1986;Persson and Beuker, 1997).…”

Section: Changes In Tree Densitymentioning

confidence: 99%

Potential for Timberline Advance in Northern Finland, as Revealed by Monitoring during 1983-99

Juntunen¹,

Neuvonen²,

Norokorpi³

et al. 2002

ARCTIC

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ABSTRACT. Seedling density, tree density and basal area of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst) were monitored and compared in the timberline areas of northern Finland during the period 1983-99. Rows of 9-12 circular plots were established at 13 localities in four regions: pine-dominated northern and southern regions and spruce-dominated western and eastern regions. Temporal changes were monitored in three altitudinal zones: in the forest, at the coniferous timberline (where forest canopy closure ceases), and at the tree line (where coniferous trees higher than 2 m cease). Pine seedling densities decreased abruptly in the southern region, especially at the timberline, but increased slightly in the northern region. The zone · region · change interaction was significant. The change in spruce seedling densities was small in the forest and timberline zones, but the densities more than doubled at the tree line. Tree density and basal area increased in all the zones and regions. New regeneration and tree establishment during the study period indicate a potential for the tree line to advance. However, there was great heterogeneity in regeneration and seedling establishment among the localities.Key words: climate change, climatic variation, regeneration, Pinus sylvestris, Picea abies, seedling density, tree density, basal area, timberline, tree line RÉSUMÉ. La densité des semis, la densité des arbres et la surface terrière du pin sylvestre (Pinus sylvestris L.) et de l'épinette de Norvège (Picea abies [L.] Karst) ont fait l'objet d'une étude et d'une comparaison dans des zones situées à la limite de la forêt de la Finlande septentrionale durant la période allant de 1983 à 1999. Des rangées de 9 à 12 parcelles circulaires ont été créées à 13 sites répartis dans 4 zones: les régions septentrionale et méridionale où dominait le pin sylvestre, et les régions occidentale et orientale où dominait l'épinette de Norvège. On a mesuré les changements temporels dans 3 zones d'altitude différente: dans la forêt, à la limite de la forêt de conifères (là où cesse la fermeture du couvert forestier), et à la limite des arbres (là où cessent les conifères de plus de 2 m de haut). La densité de semis du pin sylvestre diminuait brusquement dans la région méridionale, en particulier à la limite de la forêt, mais elle augmentait légèrement dans la région septentrionale. L'interaction zone-région-changement était significative. Le changement dans la densité de semis de l'épinette de Norvège était faible dans la forêt ellemême et dans les zones de la limite de la forêt, mais la densité avait plus que doublé à la limite des arbres. La densité des arbres et la surface terrière augmentaient dans toutes les zones et les régions. Une nouvelle régénération et un nouvel établissement d'arbres durant la période d'étude révèlent que la limite des arbres pourrait progresser. Il y avait toutefois une grande hétérogénéité dans la régénération et dans l'établissement des semis parmi les divers sites.

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Distinguishing between the effects of changes in temperature and light climate using provenance trials with Pinus sylvestris in Sweden

Cited by 34 publications

References 8 publications

Temporal and Spatial Change in Diameter Growth of Boreal Scots Pine, Norway Spruce, and Birch under Recent-Generation (CMIP5) Global Climate Model Projections for the 21st Century

Temporal and Spatial Change in Diameter Growth of Boreal Scots Pine, Norway Spruce, and Birch under Recent-Generation (CMIP5) Global Climate Model Projections for the 21st Century

Scots pine transfer effect models for growth and survival in Sweden and Finland

Potential for Timberline Advance in Northern Finland, as Revealed by Monitoring during 1983-99

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