scholarly journals ГНЕЗДОВАЯ БИОЛОГИЯ ГРАЧА (CORVUS FRUGILEGUS) В АНТРОПОГЕННО ИЗМЕНЕННЫХ СТЕПНЫХ ЭКОСИСТЕМАХ (НА ПРИМЕРЕ БОТИЕВСКОЙ ВЭС)

2016 ◽  
Vol 6 (01) ◽  
pp. 41-62
Author(s):  
A. O. Dranga ◽  
P. I. Gorlov ◽  
A. V. Matsyura ◽  
R. Budgey
Keyword(s):  
Wind Farm ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Mixed Forest ◽  
Forest Belt ◽  
Breeding Area ◽  
Corvus Frugilegus ◽  
Quantitative Characteristics ◽  
Nesting Behaviour ◽  
Forest Belts

<p>The article gives a space-structural characteristic of rook (Corvus frugilegus) nesting places in the territory of Botievo wind farm (Zaporizhzhia region). The distribution of the rook colonies around the territory, the structure of the colonies, the dependence of the location of the nests on the height, diameter, condition and species composition of tree and shrub plantings are analyzed and studied. The types and methods of the localization of nests in the trees and their quantitative characteristics are highlighted. The consortium relations of the rook and the risks associated with living near existing wind turbines are described.</p><p>In 2015 some six colonies were found: 2 medium (51-100 nests) and 4 large (101-500 nests) ones. All the colonies were located in the forest belts, mainly represented by locust trees <em>Gleditsia triacanthos</em> (5 colonies) and in the mixed forest consisting of the mulberry <em>Morus sp.</em>, maple <em>Acer</em>, black locust <em>Robinia pseudoacacia,</em> and locust trees (1 colony). The area occupied by colonies had a four-fold difference between 977-3994 m<sup>2</sup>, while the number of the rook nests fluctuated in a seven-fold range - 52-343 nests.</p><p>Analysis of different indicators describing the structure of the rook colonies revealed certain dependence between the breeding area and the number of the occupied trees (r = 0.98); the breeding area and the number of nests (r = 0.71); the number of nests in the colony and the closeness of the trees in the forest belts (r = 0.96); the number of nests and the number of the occupied trees (r = 0.81), the height of the tree and the nest on it (r = 0.64). The characteristic of the location of nests in different rows of the forest belt revealed the shift of the density of the occupation of trees in large colonies to one of the outer rows, where there were 34.8-50.7 percent of all the nests.</p><p>Typology and localization of rook nests in the trees has 11 options of the location. The type of the location of nests near the trunk of the tree dominated (59.74 percent of trees and 67.02 percent of all nests). It is shown that rooks demonstrate the plasticity of the nesting behaviour to the changing environmental conditions.</p><p><em>Keywords: Rook (Corvus frugilegus), Zaporizhia region, wind farm, nesting area, colony structure, spatial distribution, colony.</em></p>

scholarly journals Nature-oriented potential resource and melliferous value of forest belts in steppe agro-forest landscapes

2018 ◽  
Vol 60 (2) ◽  
pp. 99-107 ◽  
Author(s):  
Irina Samsonova ◽  
Anatoly Gryazkin ◽  
Natalia Belyaeva ◽  
Vladimir Belyaev ◽  
Vitaliy Petrik ◽  
...  
Keyword(s):  
Carbon Fixation ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Mixed Forest ◽  
Steppe Zone ◽  
Oxygen Production ◽  
Local Conditions ◽  
Climatic Regions ◽  
Forest Belts ◽  
Potential Resource

Abstract Creation of forest shelterbelts in steppe zone is important because they allow to obtain the highest yields of grains of cereals where the area of the most favorable conditions for growth is formed in comparison with many other soil-climatic regions. Melliferous and pollen production value of lands changes as a result of anthropic landscape conversion from agrarian to forest agrarian. There are a lot of melliferous trees and shrubs in forest belts; some of them have been introduced from the other floristic regions and are well naturalised in the local conditions. Nature-oriented potential resource of forest belts is in carbon deposition and oxygen production by phytomass of the main species. The aim of the research is to evaluate the bioresource potential of forest belts in the conditions of steppe agrarian landscapes. Bioresource potential (Brp) of forests for honey supply in the region was defined according to the distribution of species in the area. Potential honey stock of melliferous lands, represented by forest stands was assigned according to their area, given by the Forestry Department of Rostov region, and the average normative honey productivity of 1 ha of these crops. The number of beehives (N) necessary for honey supply that use ½ of bioresource forest potential was calculated according to the need of a bee family in honey per year. Value of nature-oriented resource of black locust (Robinia pseudoacacia) stands was defined according to the amount of oxygen produced and carbon deposed. Pure and mixed forest belts with the share of black locust from 60 to 80% (335.0–494.5 kg/ha) in composition with ash (Fraxinus sp.), Norway maple, Siberian elm (Ulmus pumila), apricot and dense structure of honey suckle and Siberian pea tree underbrush have the highest productivity. The total volume of possible honey yield from forest belts of agro-forest landscapes in the studied region is 26,379.8 t. Maximum indices of carbon fixation and oxygen production are observed in the maturing stands of black locust, and the largest honey stock dominate in average age stands and are 3,755,000 t, 10,288,000 t and 25,200 t, respectively. The role of the whole system in the increase of landscape honey productivity and formation of forage conveyor for bees and enthomophages might be much more if the recommended assortment of the best melliferous and pollen bearing species would be more completely used when forest belts are created.

scholarly journals Characteristics of artificial forest belts invasion by Parectopa robiniella (Clemens, 1863) (Gracillariidae stainton, 1854) in Dnipropetrovsk oblast

2021 ◽  
Vol 50 ◽  
pp. 63-69
Author(s):  
K. K. Holoborodko ◽  
M. V. Shulman ◽  
I. M. Loza ◽  
O. Ye. Pakhomov
Keyword(s):  
Leaf Development ◽  
Leaf Blade ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Age Groups ◽  
Tree Age ◽  
Forest Belt ◽  
Leaf Segment ◽  
Age Related ◽  
Forest Belts

We studied characteristics of invasion by Parectopa robiniella Clemens, 1863 the black locust (Robinia pseudoacacia Linnaeus, 1753) plantations used for field protection and anti-erosion purposes on the example of an artificial forest belt in Mayorka village in Dnipropetrovsk district, Dnipropetrovsk Oblast (Mykilsky Forestry of the Dnipro Forest Enterprise). Monitoring surveys were conducted during the growing seasons of 2014–2021. The invasion of field-protective forest belts does not appear evenly; we found that the tree age is the main factor in this process. Because black locust plantings occupy the most significant area among artificial field-protective plantings in Ukraine, we studied the characteristics of their invasion by the insect species. It was found that R. pseudoacacia manifests itself relatively actively in almost all natural zones in Ukraine, mainly due to its spread by root growth. The forest belt surveys allowed us to distinguish three age-related variants of R. pseudoacacia trees (initial trees planted in composition of a forest belt (50–70 years), sprouting trees (15–25 years), and young trees (up to 15 years)). Monitoring surveys have shown varying degrees of P. robiniella invasion of three age groups of trees. It was discovered that the invader mainly develops mines on the leaves of young trees (up to 15 years old). According to the results of calculating the average number of mines on a simple leaf, it turned out that P. robiniella most often formed the mine on the lower (near the petiole) leaf segment in all three age tree groups. Determination of the characteristics of the relative invasion of simple leaflets from the total number of damaged leaflets showed that the invasion of the leaf blade was highest within the location of the middle leaflets on Robinia complex leaf. Such characteristics of invasion can be explained by the different growth rates of R. pseudoacacia leaf blade and the quality characterization of leaf tissues. Thus, our survey confirmed the assumption of O. V. Sinchuk (2016) that the topical specificity of invasion derived from the peculiarities of divergent leaf development and acropetal leaf development of the feeding plant.

scholarly journals Assessment of qualitative and quantitative characteristics of the state of forest lands of the Novoaleksandrovsk city district of Stavropol region with the use of geoinformation technologies

2021 ◽  
Vol 27 (3) ◽  
pp. 346-358
Author(s):  
Boris Polushkovsky ◽  
Anna Belova
Keyword(s):  
Forest Belt ◽  
Forest Plantations ◽  
Urban District ◽  
Qualitative And Quantitative ◽  
Current State ◽  
Quantitative Characteristics ◽  
City District ◽  
Forest Belts ◽  
Protective Forest ◽  
Qualitative And Quantitative Characteristics

The article analyzes the possibility of evaluating the current state of forest protection plant in the Stavropol Territory based on remote sensing data. With the help of photogrammetric and kartometric methods, space snapshots are analyzed for the model territory of the Stavropol Territory (Novoaleksandrovsky City District). The use of geo-information technologies allowed us using a cartographic method to estimate the current state of forest belt and determine their qualitative and quantitative characteristics. In the process of digitizing and decrypting, forest belts were divided into categories by destruction. In total, 2524 forest belts with a total area of 10.95 thousand hectares were allocated during the work. As a result, it was possible to assess the qualitative state of the forest belt of the Novoaleksandrovsky urban district and reveal that entire and slightly destroyed protective forest belts are greater than in quantitative terms and in the area they occupy. Further, in the process of the study, the quantitative characteristics of the forest belt were established—the area was determined, and the length and width of all protective forest plantations of the Novoaleksandrovsky urban district was determined and entered into an attribute table. It has been established that the width of most of the protective forest belt (1281 pcs) in the area of the study is from 20 to 30 meters, and 1001 forest belts have a width of more than 30 m. The most common length of forest belt is less than 500 m. (1034 pcs.) and 500–1000 meters (680 pcs.). Square characteristics of protective forest plantations are much more inhomogeneous—so, completely scaffolding was revealed 247 pcs., With a total area of 1058 hectares. Slightly destroyed forest belt 1623 pcs. and their area are 7395 hectares. Significantly destroyed forest belt 41 pcs., with an area of 1734 hectares and fully destroyed—44 pcs., with an area of 213.8 hectares. The proposed research methodology and evaluation of protective forest plantations can be used for other territories of the Stavropol Territory for a more complete study of the state of the region of the region.

Improved allometric equations for black locust (Robinia pseudoacacia) in the Coweeta Basin

2021 ◽  
Author(s):  
Joel L. Scott ◽  
Chelcy F. Miniat ◽  
Jessie Motes ◽  
Sarah L. Ottinger ◽  
Nina Wurzburger ◽  
...  
Keyword(s):  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Allometric Equations

scholarly journals HEAT-INDUCED CHEMICAL AND COLOR CHANGES OF EXTRACTIVE-FREE BLACK LOCUST (ROBINIA PSEUDOACACIA) WOOD

BioResources ◽  
2012 ◽  
Vol 7 (2) ◽  
Author(s):  
Yao Chen ◽  
Jianmin Gao ◽  
Yongming Fan ◽  
Mandla A. Tshabalala ◽  
Nicole M. Stark
Keyword(s):  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Color Changes ◽  
Free Black

scholarly journals Slenderness of trees in black locust stands

2018 ◽  
Vol 79 (2) ◽  
pp. 113-117
Author(s):  
Szymon Bijak ◽  
Katarzyna Orzoł
Keyword(s):  
Standard Deviation ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Habitat Type ◽  
Stand Age ◽  
Age Classes ◽  
Breast Height ◽  
Age Class ◽  
Crown Length ◽  
Research Material

Abstract This paper investigates the slenderness of black locust (Robinia pseudoacacia) trees in relation to the biosocial status of the trees, stand age class, crown parameters and habitat type. The research material was collected on 35 research plots in the Sława Śląska, Sulechów and Głogów forest districts in western Poland and comprises 1058 trees. For each tree, we measured height (h) as well as diameter at breast height (d) and determined its biosocial status (Kraft class), crown length (CL) and relative crown length (rCL). The age class and habitat type were assessed at the plot level. Because the obtained values for slenderness (s=h/d) diverged significantly from the normal distribution, we used Kruskal-Wallis and Mann-Whitney tests to investigate the influence of the above-mentioned parameters on the h/d ratio. Black locust slenderness ranged from 0.31 to 1.95 with an average of 0.91 (standard deviation 0.24). It furthermore differed significantly between Kraft classes (the higher the biosocial status, the lower the slenderness) and age classes (the older the trees, the lower their slenderness). We also found a significant effect of the habitat type (in oligotrophic sites trees formed more slender trunks than in mesotrophic sites) and crown parameters on the h/d ratio (decreasing with increasing crown length and relative crown length). The obtained results suggest that the slenderness of black locust does not differ substantially from native broadleaved trees in Poland.

scholarly journals Propagation from root cuttings for black locust (Robinia pseudoacacia L.) improvement in Hungary: a review

2019 ◽  
Vol 25 (1-2) ◽  
Author(s):  
Zs. Keserű ◽  
K. Rédei ◽  
J. Rásó ◽  
T. Kiss
Keyword(s):  
Genetic Variation ◽  
Forest Management ◽  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Clonal Forestry ◽  
Wood Production ◽  
The World ◽  
More Care ◽  
Improved Cultivars ◽  
Robinia Pseudoacacia L

Black locust (Robinia pseudoacacia L.) is a valuable stand-forming tree species introduced to Europe approximately 400 years ago from North America. Today it is widely planted throughout the world, first of all for wood production. In Hungary, where black locust has great importance in the forest management, it is mainly propagated by seeds. But since the seed-raised plants present a great genetic variation, this type of propagation can not be used for Robinia’s improved cultivars. In the Hungarian black locust clonal forestry, propagation from root cuttings can be used for reproduction of superior individuals or cultivars in large quantities. However, this method demands more care than raising seedlings from seeds and can be applied with success in well-equipped nurseries.

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