scholarly journals Influence of moisture conditions and mineralization of soil solution on structure of litter macrofauna of the deciduous forests of Ukraine steppe zone

2015 ◽  
Vol 23 (1) ◽  
pp. 50-65 ◽  
Author(s):  
V. V. Brygadyrenko
Keyword(s):  
Soil Solution ◽  
Steppe Zone ◽  
Deciduous Forests ◽  
Moisture Conditions

scholarly journals Influence of litter thickness on the structure of litter macrofauna of deciduous forests of Ukraine’s steppe zone

2016 ◽  
Vol 24 (1) ◽  
pp. 240-248 ◽  
Author(s):  
V. V. Brygadyrenko
Keyword(s):  
Forest Ecosystems ◽  
Steppe Zone ◽  
Absolute Number ◽  
Deciduous Forests ◽  
Large Species ◽  
Vegetation Density ◽  
Tree Crown ◽  
Different Types ◽  
Litter Invertebrates ◽  
Moisture Conditions

The litter in a forest ecosystem acts as a trophic substrate, and at the same time it is the environment for litter invertebrates. But despite this fact, there has been very little research conducted on the influence of litter thickness on the structure of litter macrofauna. The litter of steppe forests contains most types of integrated communities of forest ecosystems. This means that its thickness cannot avoid playing a significant role in the functioning of the ecosystem. Following to the standard methodologies, Invertebrates were collected using pit-fall traps in deciduous forests of Nikolaev, Zaporizhzhya, Dnipropetrovsk, Donetsk and Kharkiv oblasts, which are characterized by different types of geomorphological profile, different moisture conditions, soil salinity, tree crown and herbaceous vegetation density, soil texture and other factors. The total number of macrofauna increases in conditions where litter thickness exceeds40 mmin comparison with forest ecosystems with fragmented and average capacity litter. The number of litter macrofauna species also increases from 11–23 to 38 species on average when litter thickness increases to more than40 mm. The Shannon and Pielou diversity indexes show no definite tendencies to change in relation to changing degrees of litter thickness. At sites of greater thickness of the litter layer, the corresponding increase in the absolute number of litter mesofauna invertebrates is mostly due to saprophages, and the increase the number of species – due to zoophages. The optimum structure of domination was observed at sites with maximum thickness of litter. The proportion of large species shows no statistically significant change in relation to variations in litter thickness. The qualitative compound of the fauna at sites with thick litter changes mainly due to an increase in the number of Carabidae species. 

scholarly journals ?HEMICAL EQUILIBRIUM OF SOIL SOLUTION IN STEPPE ZONE SOIL

2014 ◽  
Vol 9 (3) ◽  
pp. 420-429 ◽  
Author(s):  
Batukaev
Keyword(s):  
Soil Solution ◽  
Steppe Zone

scholarly journals Spatial differentiation of land mollusc fauna in plain territories of Ukraine

2020 ◽  
pp. 39-80
Author(s):  
Nina Gural-Sverlova
Keyword(s):  
Species Diversity ◽  
Spatial Differentiation ◽  
Steppe Zone ◽  
Deciduous Forests ◽  
Forest Steppe ◽  
Left Bank ◽  
Crimean Peninsula ◽  
The Right ◽  
Autochthonous Species ◽  
Land Molluscs

The taxonomic and ecological composition of the autochthonous land mollusc fauna in different parts of the plain Ukraine was analyzed on the basis of the personal data, collection materials of the State Museum of Natural History of the NAS of Ukraine in Lviv as well as numerous literature sources. Excluding representatives of the genus Helicopsis, the taxonomy and species composition of which in the territory of Ukraine still require clarification, and the steppe part of the Crimean peninsula, in four landscape zones of Ukraine, currently, a total of 109 species of land molluscs, which are autochthonous for at least part of the analyzed territory, are registered. The maximum species diversity (103 species and 2 representatives of the genus Helicopsis) is recorded in the zone of deciduous forests, followed by the right-bank part of the forest-steppe zone. The smallest number of the autochthonous species of land molluscs was noted for the right-bank part of the steppe zone. Within the Ukrainian Polesie and the forest-steppe zone of Ukraine, the taxonomic diversity of land molluscs decreases from west to east. The number of the registered autochthonous species decreases, respectively, by 1.5 and 1.7 times, and the generic diversity by 1.3 and 1.5 times. In the steppe zone, the main centre of the species diversity is the Donetsk Upland, located in the east of the country. In taxonomic and ecological composition, land mollusc complexes of the right-bank part of the forest-steppe zone are closer to the zone of deciduous forests, in its left-bank part – to the left-bank steppe. In general, the spatial differentiation of land mollusc fauna in the plain territories of Ukraine is more strongly associated not with the boundaries of landscaped zones, but with the location of these territories with respect to the Dnieper bed and with some uplands, where the species diversity of land molluscs of the zone of deciduous forests and forest-steppe zone (Podolian Upland) and the steppe zone (Donetsk Upland) is concentrated.

Throughfall Nitrogen Deposition Has Different Impacts on Soil Solution Nitrate Concentration in European Coniferous and Deciduous Forests

Ecosystems ◽  
2004 ◽  
Vol 7 (2) ◽  
Author(s):  
Hanne L. Kristensen ◽  
Per Gundersen ◽  
Ingeborg Callesen ◽  
Gert Jan Reinds
Keyword(s):  
Nitrogen Deposition ◽  
Soil Solution ◽  
Nitrate Concentration ◽  
Deciduous Forests

scholarly journals Effect of canopy density on litter invertebrate community structure in pine forests

2016 ◽  
Vol 35 (1) ◽  
pp. 90-102
Author(s):  
Viktor V. Brygadyrenko
Keyword(s):  
Forest Canopy ◽  
Trophic Structure ◽  
Size Structure ◽  
Relative Number ◽  
Steppe Zone ◽  
Pine Forest ◽  
Deciduous Forests ◽  
Pine Forests ◽  
Invertebrate Community ◽  
Canopy Density

Abstract We investigated the structure of the litter invertebrate community in 141 pine (Pinus sylvestris Linnaeus, 1753) forest sites with five variants of canopy density (30-44, 45-59, 60-74, 75-89 and 90-100%) in the steppe zone of Ukraine. The total number of litter macrofauna specimens collected at each site decreased from an average of 84/100 trap-days in the sparsest stands (30-40% density) to 4-39 specimens/100 trap-days in the forests with a denser canopy. The number of macrofauna species caught in the pitfall traps does not vary significantly with different degrees of canopy density. The Shannon-Weaver and Pielou diversity indexes show increases corresponding to increasing stages of canopy density. The average share of phytophages in the trophic structure of the litter macrofauna does not vary with canopy density. The relative number of saprophages decreases from 54% in the forests with the sparsest canopy to 11-13% in the forests with denser canopies. The relative number of saprophages in pine forests (22%) is lower than that in deciduous forests (40%). The share of zoophages in the trophic structure of the litter macrofauna increases significantly with the increase in the pine forest canopy density (from 21% in the sparsest plots to 59% in the densest). The relative number of polyphages is highest (47-65%) when the canopy density is 45-89%. At canopy densities below or above this range, the share of polyphages in the community decreases to 20 and 24%, respectively. Regardless of canopy density, Formicidae and Lycosidae invariably rank amongst the first three dominant families. Nine families of invertebrates dominate in the pine forest stands with the highest density (90-100%), and 5-7 families dominate in the stands with lower density. For the pine forest litter macrofauna, we have observed an extreme simplification of the community size structure compared with natural and planted deciduous forests of the steppe zone of Ukraine.

scholarly journals The influence of moisture conditions on the structure of litter invertebrate communities in shelterbelt and plantation forests in southern Ukraine

2016 ◽  
Vol 22 ◽  
pp. 77-88 ◽  
Author(s):  
Viktor V Brygadyrenko
Keyword(s):  
Body Length ◽  
Relative Abundance ◽  
Biological Diversity ◽  
Size Structure ◽  
Steppe Zone ◽  
Size Group ◽  
Limiting Factor ◽  
Size Groups ◽  
Basic Characteristics ◽  
Moisture Conditions

Context: The distribution of different size groups of litter invertebrates in varying gradations of moisture conditions is therefore of interest for a better understanding of the coordination of the components of the ecological community.Objectives: The aim of this work is to evaluate the effect of long-term average moisture conditions on the basic characteristics of the litter macrofauna of plantations in southern Ukraine.Materials and Methods: Invertebrates were collected with pitfall traps annually throughout the vegetational seasons of 2001–2013 in 176 plantation sites.Results: The average number and the quantity of invertebrate species in the litter decreases with the increase of the moisture content. The indices of biological diversity are maximal in xeromesophilous and mesophilous moisture conditions. Phytophages are distributed evenly in the litter of forest plantations. The number of saprophages is maximal in xeromesophilous (36%) and minimal – in hygromesophilous (3%) conditions. Zoophages increase in relative abundance from 14% in mesoxerophilous to 63% in hygromesophilous conditions. The abundance of polyphages does not change significantly in varying gradations of moisture (26–46%). The size structure of communities is dominated by the group ranging from 4 to 7 mm in body length (31–52%). The relative abundance of the size group exceeding 20 mm in body length reaches its maximum (16%) in mesoxerophilous conditions, and decreases (4–10%) in other gradations of moisture. The share of the size group of <4 mm is maximal (28%) in mesophilous conditions. Carabidae, Formicidae and Lycosidae form part of the dominant families in all four of the moisture gradations of artificial forests studied, while other families represent more than 3% only in plantations belonging to three gradations of moisture.Conclusion: Litter moisture is a limiting factor for invertebrate existence in the extreme conditions of forest ecosystems, especially in the south of the steppe zone of Ukraine.J. bio-sci. 22: 77-88, 2014

scholarly journals Biotopic diversity and ecomorphic analysis of the Gryshkiv lis tract (Poltava)

2021 ◽  
Vol 50 ◽  
pp. 22-32
Author(s):  
O. I. Lisovets ◽  
D. S. Ganzha ◽  
O. O. Mylnikova
Keyword(s):  
Biological Diversity ◽  
Higher Plants ◽  
Steppe Zone ◽  
Rare Plants ◽  
Deciduous Forests ◽  
Forest Steppe ◽  
Residential Areas ◽  
Characteristic Type ◽  
Green Book ◽  
High Degree

The study of ecosystem and biotope biodiversity of park ecosystems allows to identify the most valuable plant objects in their composition, to assess the degree of stability of existing groups and to identify current threats of anthropogenic impact on them. Gryshkiv Lis tract (Poltava, Kyiv region) is one of the centers of natural phytodiversity conservation and is an array of deciduous forests with an area of ​​about 50 hectares, located adjacent to residential areas of the city. Research materials were collected during field expeditions in August–September 2021 using generally accepted geobotanical methods. The list of higher plants found on the territory of the Gryshkiv Lis tract includes 154 species belonging to 3 classes, 51 families. The most numerous of them are Asteraceae – 19%, Poaceae – 14%, Rosaceae – 11% and Lamiaceae – 10%. There are two species of plants listed in the Red Book of Ukraine and seven species are regionally rare plants. One plant group was identified in the Green Book of Ukraine. Ecomorphic analysis of species showed that mesophytes, sciogeliophytes and mesotrophs predominate in the study area. Thus, the proportions of hygromorphs, heliomorphs and tropomorphs are close to the structure of the typical flora of the forest-steppe zone, which indicates favorable development conditions for zonal forest vegetation. However, in the spectrum of cenomorphs the share of ruderants is quite significant – almost 20%, the percentage of adventitious species is close to 3%. This indicates a significant anthropogenic transformation of the flora of the surveyed object. Habitat classification was carried out in accordance with the structure of the National Catalog of Habitats of Ukraine. Studies have shown that in the tract "Grishkiv Lis" there are at least 7 habitats, including forest (Eastern European mesophilic eutrophic deciduous forests of forest-steppe and steppe zones), swampy (reedbeds normally without freestanding water, beds of large Carex spp.), shrubbery (lowland and collinar riverine willow scrub, Central European subcontinental thickets), grassy (mesophile fringes), synanthropic (ruderal biotops of perennial nitrophilic type grasses). The dominant habitat of the Gryshkiv Lis tract is natural deciduous forests. The studied object represents a characteristic type of vegetation for the forest-steppe zone – maple-linden oak wood (anthropogenically transformed) with elements of waterlogging. Its central areas are represented by stands with a high degree of preservation of the structure and have good prospects for preservation and restoration with moderate efforts. Recommendations for the preservation of floristic diversity and vegetation of the Gryshkiv Lis tract include the introduction of a system of biotechnical measures to support ecosystems, including restrictions and regulation of recreation, elimination of natural landfills, sewage disposal and elimination of unauthorized buildings. The territory has environmental, scientific, aesthetic and recreational significance. Creation here of a protected area will help preserve the coenotic, landscape and biological diversity of Poltava region.

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