scholarly journals Anatomical and Morphological Features of Scots Pine Heartwood Formation in Two Forest Types in the Middle Taiga Subzone

Forests ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 91
Author(s):  
Tatiana V. Tarelkina ◽  
Natalia A. Galibina ◽  
Sergei A. Moshnikov ◽  
Kseniya M. Nikerova ◽  
Elena V. Moshkina ◽  
...  
Keyword(s):  
Transition Zone ◽  
Scots Pine ◽  
Parenchyma Cell ◽  
Ring Width ◽  
Pine Forest ◽  
Middle Taiga ◽  
Forest Types ◽  
Heartwood Formation ◽  
Middle Taiga Subzone ◽  
Wide Range

Currently, there is no consensus on how growing conditions affect the heartwood formation in Scots pine. Comparing the results obtained by different authors is difficult due to methodology differences and poor descriptions of the objects used. We selected two sample plots in (1) a blueberry pine forest on nutrient-rich and moist soil and (2) a lichen pine forest on nutrient-poor and dry soil and performed their detailed characterization. The sample plots were located 22 km apart in the middle taiga subzone (Karelia Republic, northwest Russia). In each sample plot, we selected five dominant trees (model trees), from which we took cores at different trunk heights (0.3, 1.5, 4.5, 7.5 and 10.5 m). The cores were treated with 2,6-dichlorophenolindophenol to identify the heartwood zone. Additionally, samples were taken to study the structural features of the transition zone between sapwood and heartwood. In both forest types, the number of heartwood rings depended on the cambium age, and the patterns of parenchyma cell death did not differ in the transition zone. These facts point to a predominantly internal regulation of the heartwood formation in Scots pine. The heartwood radius and its proportion on the cross-sections were significantly higher in the blueberry pine forest than in the lichen pine forest, despite the relative values of the annual ring width. Further research is needed to develop successful Scots pine heartwood width models under a wide range of conditions.

scholarly journals THE EFFECT OF SOIL CONDITIONS ON GROWTH AND PARAMETERS OF THE MINERAL AND WATER METABOLISM IN SCOTS PINE IN A MIDDLE-TAIGA LICHEN-TYPE PINE FOREST

2020 ◽  
pp. 113
Author(s):  
Татьяна Аркадьевна Сазонова ◽  
Владислава Борисовна Придача ◽  
Tatiana Sazonova ◽  
Vladislava Pridacha
Keyword(s):  
Scots Pine ◽  
Pine Forest ◽  
Middle Taiga ◽  
Soil Conditions ◽  
Water Metabolism

scholarly journals Differences in the Climate-Growth Relationship of Scots Pine: A Case Study from Poland and Hungary

Forests ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 243 ◽  
Author(s):  
Dávid Misi ◽  
Radosław Puchałka ◽  
Charlotte Pearson ◽  
Iain Robertson ◽  
Marcin Koprowski
Keyword(s):  
Tree Ring ◽  
Scots Pine ◽  
Ring Width ◽  
Summer Precipitation ◽  
Growth Patterns ◽  
Dominant Factor ◽  
Tree Ring Width ◽  
Important Species ◽  
Growth Environment ◽  
Wide Range

Scots pine is an adaptable and prevalent European tree species that grows naturally throughout Europe and has been planted in a wide range of environments. Previous studies have indicated that climatic variables affect tree-ring growth patterns in this species, but it is also possible that certain aspects of the growth environment moderate this response. In order to understand the potential impact a shifting climate has on this important species, this study compared the growth response of two populations of Scots pine. Trees from similar bioclimatic regions in Hungary and Poland were compared using the hypothesis that differences in the association between climate and growth would be reflected by the degree of tree-ring width variation. We also wanted to know how changing climatic conditions influenced the temporal stability of the climate–growth signal in the most important periods for tree growth. Clear similarities in the effect of temperature and precipitation on tree-ring width variation were found between the two sites, but there were also some interesting differences. In the late winter to early spring period both populations reacted to warming with a decreasing association with temperature. Summer precipitation was shown to be the dominant factor in controlling ring-width. A decreasing trend in summer precipitation values at both Hungarian and Polish sites resulted in a weakening in correspondence for the Hungarian trees, while the Polish trees showed a significant increase in correlation with summer precipitation. The results indicated that changes in climate influenced the studied trees in different ways which has implications for the future balance of Scots pine growth in Europe.

Population dynamics of earthworms and their activity in forest ecosystems of North-east India

1991 ◽  
Vol 7 (3) ◽  
pp. 305-318 ◽  
Author(s):  
Tuneera Bhadauria ◽  
P. S. Ramakrishnan
Keyword(s):  
Monsoon Season ◽  
Pine Forest ◽  
Sacred Grove ◽  
Forest Types ◽  
Forest Stands ◽  
North East India ◽  
North East ◽  
Wide Range ◽  
Earthworm Populations ◽  
Earthworm Activity

ABSTRACTA comparative analysis of earthworm populations in seral Khasi pine forest represented byPinus kesiya5- and 35-year old stands, and a climax broad-leaved mixed forest represented by a sacred grove was done at altitudes of 1500 m in Meghalaya in north-east India.Tonoscolax horaiioccurred under all forest types whereasAmynthas diffringensandEulyphoeus feslivuswere confined to pine forest stands only.Perionyxsp. andDrawida assamensiswere restricted to the sacred grove.T. horaiihad larger numbers in all three different forest types. This species offers possibilities of vermicullurc for biologically improving soil fertility in manmade ecosystems because of its wide range of tolerance.Generally earthworm populations were more active during the monsoon season;A. diffringenswas however, more active during the winter, thereby conferring an advantage on this species as it was enabled to avoid competition during the monsoon season when other species dominate. Earthworm activity was generally higher in the sacred grove than in the pine forest stands. Population size was significantly correlated with soil moisture, temperature and pH. Wormcasts had a higher pH and nutrient status than the soil.In the highly leached soils of the humid tropics where there is a large concentration of fine root biomass in the surface soil layers, earthworm activity is beneficial because it helps incorporate detritus into the mineral soil rapidly and locally concentrates nutrients in the surface layers.

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

1988 ◽  
Vol 53 ◽  
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.

Exchange of trace gases between soils and the atmosphere in Scots pine forest ecosystems of the northeastern German lowlands

2002 ◽  
Vol 167 (1-3) ◽  
pp. 123-134 ◽  
Author(s):  
K Butterbach-Bahl ◽  
L Breuer ◽  
R Gasche ◽  
G Willibald ◽  
H Papen
Keyword(s):  
Scots Pine ◽  
Forest Ecosystems ◽  
Trace Gases ◽  
Pine Forest ◽  
Scots Pine Forest

CAMBIAL BEHAVIOR WITH REFERENCE TO CELL LENGTH AND RING WIDTH IN PINUS STROBUS L.

1962 ◽  
Vol 40 (8) ◽  
pp. 1057-1062 ◽  
Author(s):  
M. W. Bannan
Keyword(s):  
Inverse Relationship ◽  
Ring Width ◽  
Pinus Strobus ◽  
Growth Patterns ◽  
Cell Length ◽  
Annual Rings ◽  
Forest Types ◽  
Thuja Occidentalis ◽  
Cambial Cells ◽  
Individual Trees

The relationships between width of annual rings, length of wood cells, and frequency of anticlinal (multiplicative) divisions in fusiform cambial cells were studied by reference to trees of various growth patterns. The trees selected ranged from 8 to 20 in. diameter and included both open-grown specimens with branches close to the ground and forest types with tall, slender shafts. Much fluctuation was noted among individual trees, but in general there was, in the peripheral growth, an inverse relationship between length of wood cells and width of annual rings. The frequency of anticlinal divisions in the cambium remained at a more or less uniform rate in trees with rings from 1.5 to 5 mm wide, but rose sharply when ring width fell below 1.3 mm. This was in contrast to the situation observed earlier in Thuja occidentalis where the rise in frequency of anticlinal divisions was slight and occurred only in trees with rings less than 0.3 mm wide.

Abundance of Ixodid Ticks (Acari: Ixodidae) on Small Mammals in Forest Biotopes of the Middle Taiga Subzone of Karelia

2021 ◽  
Vol 101 (2) ◽  
pp. 273-281
Author(s):  
L. A. Bespyatova ◽  
S. V. Bugmyrin ◽  
S. A. Kutenkov ◽  
I. A. Nikonorova
Keyword(s):  
Small Mammals ◽  
Ixodid Ticks ◽  
Middle Taiga ◽  
Middle Taiga Subzone

scholarly journals Forward modelling of tree-ring width and comparison with a global network of tree-ring chronologies

2014 ◽  
Vol 10 (2) ◽  
pp. 437-449 ◽  
Author(s):  
P. Breitenmoser ◽  
S. Brönnimann ◽  
D. Frank
Keyword(s):  
Data Assimilation ◽  
Tree Ring ◽  
Ring Width ◽  
Global Network ◽  
Threshold Temperature ◽  
Tree Ring Width ◽  
Data Set ◽  
Observation Operator ◽  
Tree Ring Data ◽  
Wide Range

Abstract. We investigate relationships between climate and tree-ring data on a global scale using the process-based Vaganov–Shashkin Lite (VSL) forward model of tree-ring width formation. The VSL model requires as inputs only latitude, monthly mean temperature, and monthly accumulated precipitation. Hence, this simple, process-based model enables ring-width simulation at any location where monthly climate records exist. In this study, we analyse the growth response of simulated tree rings to monthly climate conditions obtained from the CRU TS3.1 data set back to 1901. Our key aims are (a) to assess the VSL model performance by examining the relations between simulated and observed growth at 2287 globally distributed sites, (b) indentify optimal growth parameters found during the model calibration, and (c) to evaluate the potential of the VSL model as an observation operator for data-assimilation-based reconstructions of climate from tree-ring width. The assessment of the growth-onset threshold temperature of approximately 4–6 °C for most sites and species using a Bayesian estimation approach complements other studies on the lower temperature limits where plant growth may be sustained. Our results suggest that the VSL model skilfully simulates site level tree-ring series in response to climate forcing for a wide range of environmental conditions and species. Spatial aggregation of the tree-ring chronologies to reduce non-climatic noise at the site level yielded notable improvements in the coherence between modelled and actual growth. The resulting distinct and coherent patterns of significant relationships between the aggregated and simulated series further demonstrate the VSL model's ability to skilfully capture the climatic signal contained in tree-ring series. Finally, we propose that the VSL model can be used as an observation operator in data assimilation approaches to reconstruct past climate.

scholarly journals The 443-Year Tree-Ring Chronology for the Scots Pine from Upper Silesia (Poland) as A Dating Tool and Climate Proxy

2015 ◽  
Vol 42 (1) ◽  
Author(s):  
Magdalena Opała
Keyword(s):  
Tree Ring ◽  
Scots Pine ◽  
Meteorological Data ◽  
Ring Width ◽  
Tree Ring Chronology ◽  
Series Length ◽  
Upper Silesia ◽  
Living Tree ◽  
Absolute Dating ◽  
The Mean

Abstract An annually resolved and absolutely dated ring-width chronology spanning 443 years has been constructed using the historical and living-tree Scots pine samples from the Upper Silesia, south of Poland. The constructed regional chronology, based on six object chronologies, covers the period of 1568-2010. It is composed of 178 wood samples with the mean correlation of 0.51, mean series length of 104 years and mean EPS of 0.85. In total, 65 extreme years were distinguished. Their inde-pendent verification, based on the historical and meteorological data, showed significant correlation with the exceptionally cold/mild winters as well as severe droughts. The comparison of the extreme years with the other Polish pine chronologies showed similarities in the years with the anomalous winter conditions. Some extreme years can be associated with the exceptional pluvial conditions; these years are common in the Central European hydroclimatic tree-ring records. The construction of this regional pine chronology enables for the absolute dating of many architectural monuments from investigated region. The application of the new chronology for the dating of local wood can support interpretations of changes in the environment of the Upper Silesian region. In the future it can also be used as the basis for climate reconstruction.

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