Trends of Scots pine forest health and element flow changes in the ICP Forests monitoring sites in Latvia

Scots pine (Pinus sylvestris L.) is one of the most widespread and economically most important tree species in Latvia. Scots pine forest health and element flow changes have been monitored in Latvia within the International Cooperative Programme on Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests) with assessment of crown condition and damaging agents at 115 Level I monitoring sites (mostly oligothrophic and mesotrophic Vacciniosa, Myrtillosa and Hylocomiosa forests) and with sampling and analyses of environmental samples at three Level II monitoring sites representing typical Scots pine forests (Myrtillosa) in hemiboreal conditions in Latvia. This study summarizes the background information and presents the trends of forest health, carbon turnover and environment condition in Scots pine forest since 2009. In general, defoliation rate in Scots pine stands remains stable for the studied period, with some yearly fluctuations, possibly related to regional insect outbreaks, especially well demonstrated in two Level II plots. The share of damaged trees varied by year from 12.8% to 19% of the total number; the main cause of damage was direct action of man. Chemical element flows in Scots pine forests in Level II monitoring plots have been relatively stable as well except the decreasing trend in total N concentration in deposition and SO4-S concentration in soil solution and increasing trends in DOC concentration in soil solution that is in line with common trends in Europe. Carbon input with above-ground litter was relatively stable during the whole period; however, interannual variations were rather wide.

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Soil Solution Response to Nitrogen and Magnesium Application in a Scots Pine Forest

Soil Science Society of America Journal ◽

10.2136/sssaj2001.1812 ◽

2001 ◽

Vol 65 (6) ◽

pp. 1812-1823 ◽

Cited By ~ 13

Author(s):

Live S. Vestgarden ◽

Gunnar Abrahamsen ◽

Arne O. Stuanes

Keyword(s):

Soil Solution ◽

Scots Pine ◽

Pine Forest ◽

Scots Pine Forest

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Biomass dynamics of central Siberian Scots pine forests following surface fires of varying severity

International Journal of Wildland Fire ◽

10.1071/wf13043 ◽

2014 ◽

Vol 23 (6) ◽

pp. 872 ◽

Cited By ~ 10

Author(s):

Elena A. Kukavskaya ◽

Galina A. Ivanova ◽

Susan G. Conard ◽

Douglas J. McRae ◽

Valery A. Ivanov

Keyword(s):

Scots Pine ◽

Pine Forest ◽

Prescribed Fires ◽

Above Ground Biomass ◽

Fuel Loading ◽

High Severity ◽

Ground Biomass ◽

Scots Pine Forests ◽

Biomass Components ◽

Scots Pine Forest

In 2000–2002 nine 4-ha prescribed fires of various severities were conducted on experimental plots in mature Scots pine forest in the central Siberian taiga, Russia. Total above-ground living biomass decreased after low- and moderate-severity fires by 10 and 15%, whereas high-severity fire reduced living above-ground biomass by 83%. We monitored changes in fuel structure and biomass for 6–8 years following these fires. By 6–8 years after burning the ground fuel loading had recovered to 101, 96 and 82% of pre-fire levels after fires of low-, moderate- and high-severity. Down woody fuel loading increased by 0.18±0.04kgm–2year–1. We developed regressions relating time since fire to changes in above-ground biomass components for fires of different severity for feather moss–lichen Scots pine forest of Siberia. Our results demonstrate the importance of both burn severity and composition of pre-fire surface vegetation in determining rates and patterns of post-fire vegetation recovery on dry Scots pine sites in central Siberia.

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Phytosociological analysis of basophilic Scots pine forests in the Southeastern Alps

Hacquetia ◽

10.2478/hacq-2019-0015 ◽

2020 ◽

Vol 19 (1) ◽

pp. 23-80

Author(s):

Andrej Rozman ◽

Igor Dakskobler ◽

Urban Šilc

Keyword(s):

Scots Pine ◽

Habitat Type ◽

Hierarchical Classification ◽

Natura 2000 ◽

Pine Forests ◽

Forest Site ◽

New Association ◽

Scots Pine Forests ◽

Phytosociological Relevés ◽

Scots Pine Forest

AbstractBased on hierarchical classification of more than 300 phytosociological relevés of basophilic black and (or) Scots pine communities in the Southern, Eastern and Southeastern Alps we described a new association Rhodothamno chamaecisti-Pinetum sylvestris, into which we classify stands that have until now been discussed in the framework of subassociations Fraxino orni-Pinetum nigrae pinetosum sylvestris, laricetosum deciduae and (partly) caricetosum humilis, and are floristically slightly similar also to certain forms of the association Erico-Pinetum sylvestris. The stands of the new association are for now classified into Natura 2000 habitat type Southeastern-European Pinus sylvestris forests (91R0), within it we propose a special habitat subtype Southeastern-Alpine Scots pine forests, and into a new forest site type Southeastern-Alpine Scots pine forest. At the contact of the Julian and Dinaric Alps we described a new subassociation Genisto januensis-Pinetum sylvestris campanuletosum cespitosae, which comprises also a Natura 2000 species Primula carniolica.

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Effects of liming, sod-cutting and fertilization at ambient and decreased nitrogen deposition on the soil solution chemistry in a Scots pine forest in the Netherlands

Forest Ecology and Management ◽

10.1016/j.foreco.2006.09.050 ◽

2006 ◽

Vol 237 (1-3) ◽

pp. 237-245 ◽

Cited By ~ 7

Author(s):

Andries W. Boxman ◽

Jan G.M. Roelofs

Keyword(s):

The Netherlands ◽

Nitrogen Deposition ◽

Soil Solution ◽

Scots Pine ◽

Pine Forest ◽

Solution Chemistry ◽

Soil Solution Chemistry ◽

Scots Pine Forest ◽

Sod Cutting

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Long term changes in atmospheric N and S throughfall deposition and effects on soil solution chemistry in a Scots pine forest in the Netherlands

Environmental Pollution ◽

10.1016/j.envpol.2008.03.017 ◽

2008 ◽

Vol 156 (3) ◽

pp. 1252-1259 ◽

Cited By ~ 34

Author(s):

Andries W. Boxman ◽

Roy C.J.H. Peters ◽

Jan G.M. Roelofs

Keyword(s):

The Netherlands ◽

Soil Solution ◽

Scots Pine ◽

Pine Forest ◽

Solution Chemistry ◽

Soil Solution Chemistry ◽

Long Term Changes ◽

Scots Pine Forest ◽

Throughfall Deposition

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Seasonal Changes in the Photosynthetic Activity of Terrestrial Lichens and Mosses in the Lichen Scots Pine Forest Habitat

Diversity ◽

10.3390/d13120642 ◽

2021 ◽

Vol 13 (12) ◽

pp. 642

Author(s):

Michał H. Węgrzyn ◽

Patrycja Fałowska ◽

Karima Alzayany ◽

Karolina Waszkiewicz ◽

Patrycja Dziurowicz ◽

...

Keyword(s):

Scots Pine ◽

Photosynthetic Activity ◽

Pine Forest ◽

Pleurozium Schreberi ◽

Factors Affecting ◽

Physiological Processes ◽

Scots Pine Forests ◽

Scots Pine Forest ◽

Main Component ◽

Dicranum Scoparium

Photosynthetic activity is one of the most important metabolic processes that can be quickly and easily studied in the field. It can be used for identifying the environmental factors affecting ecosystem balance, as any stressor influencing metabolic and physiological processes will have a measurable effect on photosynthesis. The aim of this study was to measure the photosynthetic activity of selected lichens and mosses and investigate its changes resulted from diurnal and seasonal variability. We studied two lichens (Cladonia mitis Sandst and Cladonia uncialis (L.) Weber ex F.H. Wigg.) and two mosses (Pleurozium schreberi (Willd. ex Brid.) Mitt. and Dicranum scoparium (L.) Hedw.). Samples were collected in the area of lichen Scots pine forest of the “Bory Tucholskie” National Park. Our study revealed that the photosynthetic activity of cryptogams depended on species, season, time of the day, and water availability. Cladonia species, which are the main component of lichen Scots pine forests, have higher photosynthetic activity than Pleurozium schreberi, which represents species of fresh coniferous forests. Photosynthetic activity increased from spring through summer and reached the highest values in autumn. It was also higher in soaked samples collected in the morning and afternoon compared to noon. Despite the water access, noon samples still showed the lowest activity. This can result from natural changes in humidity during the day to which cryptogams are well-adapted.

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Baumartenwechsel in den Walliser Waldföhrenwäldern verstärkt nach grossen Störungen

Schweizerische Zeitschrift fur Forstwesen ◽

10.3188/szf.2018.0260 ◽

2018 ◽

Vol 169 (5) ◽

pp. 260-268 ◽

Cited By ~ 2

Author(s):

Thomas Wohlgemuth ◽

Violette Doublet ◽

Cynthia Nussbaumer ◽

Linda Feichtinger ◽

Andreas Rigling

Keyword(s):

Scots Pine ◽

Forest Fire ◽

Tree Regeneration ◽

Fire Disturbance ◽

Pine Forests ◽

The Past ◽

Vegetation Shift ◽

Tree Demography ◽

Scots Pine Forests ◽

High Share

Vegetation shift in Scots pine forests in the Valais accelerated by large disturbances In the past dozen years, several studies have concluded a vegetation shift from Scots pine to oak (pubescent and sessile) forests in the low elevated zones of the Valais. It is, however, not fully clear in which way such a vegetation shift actually occurs and on which processes such a shift would be based. Two studies, one on the tree demography in the intact Pfynwald and the other on the tree regeneration on the large Leuk forest fire patch, serve to discuss different aspects of the shift from Scots pine to oak. The forest stands of Pfynwald consist of 67% Scots pines and 14% oaks. Regenerating trees are 2–3.5 times more frequent in small gaps than under canopy. In gaps of the Upper Pfynwald, seedlings and saplings of Scots pine are three times more abundant than oaks, while both species regenerate in similar quantities under canopy. In the Lower Pfynwald, young oaks – especially seedlings – are more frequent than Scots pines. A different process is going on at the lower part in the Leuk forest fire patch where Scots pines prevailed before the burn of 2003. While Scots pines regenerate exclusively close to the edge of the intact forest, oaks not only resprout from trunk but also profit from unlimited spreading of their seeds by the Eurasian jay. Regeneration from seeds are hence observed in the whole studied area, independent of the proximity of seed trees. After the large fire disturbance, a mixed forests with a high share of oaks is establishing, which translates to a rapid vegetation shift. The two trajectories are discussed in the light of climate change.

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Analysis of natural regeneration of Scots pine forest in the high Campine after a fire

Silva Gandavensis ◽

10.21825/sg.v53i0.912 ◽

1988 ◽

Vol 53 ◽

Cited By ~ 1

Author(s):

N. Lust

Keyword(s):

Scots Pine ◽

Natural Regeneration ◽

Fire Regime ◽

Pine Forest ◽

Seed Supply ◽

Regeneration Period ◽

The Social ◽

Short Period ◽

Fire Area ◽

Scots Pine Forest

The study deals with the spontaneous resettlement of a fire area, after destruction of 600 ha Scots pine forest. The following items have been examined in particular: the composition of the tree species, the duration of the regeneration period, the influence of the parent stand, the exposition, the slope, the treatment, the fire regime and the social differentiation. The resettlement took place very quickly and over a very short period. Birch and Scots pine take up 95 % of the stem number. The regeneration result is precarious, yet mostly good. The parent stand is favourable both to seed supply and to microclimate, but only over a short distance. The Scots pine prefers more open and dry areas, whereas birch needs more humidity. Practice has shown that natural regeneration of Scots pine stands is possible. The forest treatment, however, is very important. It determines not only the immediate result of the regeneration, but also the composition and the structure of the future stand.

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