Selection and Breeding of Scots Pine for Northern Sweden

1993 ◽  
pp. 321-332
Author(s):  
Jan-Erik Nilsson
Keyword(s):  
Scots Pine ◽  
Northern Sweden

scholarly journals Fire and age structure of Scots pine and Norway spruce in northern Sweden during the past 700 years

1994 ◽  
Vol 126 (1) ◽  
pp. 163-168 ◽  
Author(s):  
OLA ENGELMARK ◽  
LEIF KULLMAN ◽  
YVES BERGERON
Keyword(s):  
Norway Spruce ◽  
Scots Pine ◽  
Age Structure ◽  
Northern Sweden ◽  
The Past

Dendroclimatic relationships and possible implications for mountain birch and Scots pine at treeline in northern Sweden through the 21st centuryThis article is a contribution to the series Tree recruitment, growth, and distribution at the circumpolar forest–tundra transition.

2011 ◽  
Vol 41 (3) ◽  
pp. 450-459 ◽  
Author(s):  
Amanda B. Young ◽  
David M. Cairns ◽  
Charles W. Lafon ◽  
Jon Moen ◽  
Laura E. Martin
Keyword(s):  
Tree Ring ◽  
Scots Pine ◽  
Climate Models ◽  
Global Climate ◽  
Ring Width ◽  
Global Climate Models ◽  
The Arctic ◽  
Mountain Birch ◽  
Terrestrial Vegetation ◽  
Northern Sweden

Changing climate in the Arctic is expected to have significant effects on the pattern and distribution of terrestrial vegetation. Species characteristic of specific zones in the mountains of northern Sweden have been shown to migrate up- and down-slope with changes in climate over the Holocene. This study evaluates the potential for Scots pine (Pinus sylvestris L.) to become a treeline dominant at Fennoscandian treelines, replacing mountain birch (Betula pubescens subsp. czerepanovii (Orlova) Hämet-Ahti). Data from paired mountain birch and Scots pine tree-ring chronologies for eight locations in northern Sweden are used to develop climate – tree ring width index (RWI) relationships. Modeled climate–RWI relationships are then used to predict the relative RWI values of the two species under a suite of climate-forcing scenarios using an ensemble of three global climate models. Results indicate that mountain birch and Scots pine RWI are both correlated with summer temperatures, but Scots pine is more likely than mountain birch to be influenced by moisture conditions. Predictions of RWI under future climate conditions indicate that mountain birch is unlikely to be replaced by Scots pine within the next century.

scholarly journals Effects on stem growth of Scots pine 33 years after thinning and/or fertilization in northern Sweden

2018 ◽  
Vol 34 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Erik Valinger ◽  
Hans Sjögren ◽  
Gustav Nord ◽  
Jonas Cedergren
Keyword(s):  
Scots Pine ◽  
Stem Growth ◽  
Northern Sweden

scholarly journals Biomass equations for lodgepole pine in northern Sweden

2017 ◽  
Vol 47 (1) ◽  
pp. 89-96 ◽  
Author(s):  
Björn Elfving ◽  
Kristina Ahnlund Ulvcrona ◽  
Gustaf Egnell
Keyword(s):  
Scots Pine ◽  
Pinus Contorta ◽  
Lodgepole Pine ◽  
Stem Bark ◽  
Dry Mass ◽  
Stand Age ◽  
Northern Sweden ◽  
Residual Variation ◽  
Dead Branch ◽  
Biomass Equations

Biomass equations for cultivated lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) were developed based on data from destructive biomass sampling of 164 trees collected from 13 sites at latitudes 61.9°N–66.2°N in northern Sweden. Stand age varied between 20 and 87 years and top height varied between 8 and 32 m. Seeded and planted stands with different densities were included. Allometric biomass equations for all above-stump components were constructed, expressing dry mass of stem, bark, living and dead branch wood, foliage, and cones, as well as total mass. Equations with one to three independent variables were constructed for each component, accounting for variances within and between sites. Estimated values for trees of different sizes were compared with corresponding estimates for lodgepole pine in Canada and Scots pine (Pinus sylvestris L.) in Sweden and Finland. Residual variation of our equations was lower than that of equations from other sources. Our equations predicted average biomass levels similar to the predictions from Canadian equations for natural stands. In comparison with Scots pine, at given stem dimensions, lodgepole pine had 50%–100% more foliage biomass and greater dead branch biomass with increasing tree size. The wide amplitude of our data and the flexible form of our equations should make them useful for wider application.

scholarly journals Establishment of Cladonia stellaris after artificial dispersal in an unfenced forest in northern Sweden

Rangifer ◽  
2009 ◽  
Vol 29 (1) ◽  
pp. 39-49 ◽  
Author(s):  
Samuel Roturier ◽  
Urban Bergsten
Keyword(s):  
Scots Pine ◽  
Effective Means ◽  
Northern Sweden ◽  
Reindeer Husbandry ◽  
Scatter Method ◽  
Lichen Cover ◽  
Survival And Development ◽  
Scatter Plots ◽  
Scots Pine Forest ◽  
Reindeer Lichen

In 2002, fragments and whole thalli of reindeer lichen, mainly Cladonia stellaris, were spread in a typical Scots pine forest in northern boreal Sweden to study the survival and development after artificial lichen dispersal. The forest was not fenced, allowing reindeer access to graze. Lichens were dispersed in intact vegetation in 1 m2 plots by one of two methods: either as an intact lichen mat (patch) of 0.25 m2 in the centre of the plot or as fragments scattered (scatter) across the whole plot. The lichen was then monitored by photo inventory. In 2006, three years after the first inventory, all patch plots had been partially grazed by reindeer and the lichen cover measured in both patch and scatter plots had decreased severely. In 2008, the lichen cover in the patch and scatter plots had increased by up to 54% and 88%, respectively, of the cover measured during the first inventory in 2003. A significant increase in the number of fragments in the plots was also observed between 2006 and 2008, suggesting that in addition to growing like naturally established thalli, the lichen had spread and slowly colonized the plots. Dispersing lichen by the “patch” method appears to be less costefficient than the “scatter” method, if the area is grazed by reindeer. These results support the hypothesis that dispersal of reindeer lichen could be an effective means of restoring lichen stands, which are important for reindeer husbandry, even if the area is open to reindeer grazing. Abstract in Swedish / Sammanfattning: Etablering av Cladonia stellaris efter artificiell spridning i ej inhägnad skog i norra Sverige Renlav (främst Cladonia stellaris) spreds manuellt 2002 i en talldominerad skog i norra Sverige för att studera lavens etablering efter artificiell spridning. Försöksområdet var inte hägnat utan öppet för renbete. Laven spreds i intakt markvegetation på 1 m2-ytor, antingen i form av intakta lavbålar (0,25 m2) i ytans centrum eller som fragment över hela provytan. Lavens etablering följdes med hjälp av fotoinventering. År 2006, tre år efter första inventeringen, hade alla provytor betats av ren och lavens täckningsgrad hade reducerats betydligt. Vid inventeringen 2008 hade lavens täckningsgrad ökat med upp till 54% (intakt lav) resp. 88% (lavfragment), i jämförelse med täckningsgraden den första inventeringen. Mellan 2006 och 2008 ökade antalet fragment per provyta signifikant vilket indikerar en fortsatt naturlig etablering med spridning via fragment. Att sprida lav i form av intakta lavbålar förefaller mindre kostnadseffektivt än spridning av lav i fragmentform om spridningsområdet är öppet för renbete. Resultaten utgör ett stöd för hypotesen att artificiell spridning av renlav kan vara ett effektivt sätt att restaurera viktiga renbetesområden, även om området inte är skyddat för renbete.

scholarly journals Anthropogenic use of fire led to degraded scots pine-lichen forest in northern Sweden

Anthropocene ◽  
2018 ◽  
Vol 24 ◽  
pp. 14-29
Author(s):  
G. Hörnberg ◽  
T. Josefsson ◽  
T.H. DeLuca ◽  
P.E. Higuera ◽  
L. Liedgren ◽  
...  
Keyword(s):  
Scots Pine ◽  
Northern Sweden

scholarly journals Records of rare aphyllophoroid fungi on Scots pine in northern Sweden

Karstenia ◽  
2010 ◽  
Vol 50 (2) ◽  
pp. 45-52 ◽  
Author(s):  
Torbjörn Josefsson ◽  
Wjacheslav A. Spirin
Keyword(s):  
Scots Pine ◽  
Northern Sweden ◽  
Aphyllophoroid Fungi
Sign in / Sign up

Export Citation Format

Share Document