scholarly journals Spatial Diversification of Bee (Hymenoptera: Apoidea: Apiformes) Assemblages in Forest Communities of the Suchedniów-Oblęgorek Landscape Park

2012 ◽  
Vol 56 (2) ◽  
pp. 89-106
Author(s):  
Jolanta Bąk-Badowska
Keyword(s):  
Forest Floor ◽  
Riparian Forest ◽  
Coniferous Forest ◽  
Ground Cover ◽  
Forest Communities ◽  
Canopy Layer ◽  
Qualitative And Quantitative ◽  
Spatial Diversification ◽  
Study Sites ◽  
Forest Habitats

Abstract The aim of the study, carried out from April to October in 2004 and 2005, was to characterise bee (Apiformes) assemblages in the phytosociologically diversified forest communities of the Suchedniów-Oblęgorek Landscape Park. Moericke colour traps were used to capture the bees. The five study sites yielded 76 bee species. There was a predominance of representatives from the families Apidae (28 species, 900 individuals) and Andrenidae (20 species, 222 individuals). The indices of species diversity (H’) and evenness (J’) reached their highest values in a mixed coniferous forest (BM) site, and reached their lowest values in a fi r forest (BJ) site. Qualitative and quantitative similarity of assemblage structure was highest in assemblages in mixed coniferous forest, mesic coniferous forest, and oak-hornbeam forest habitats, decreasing in floristically poor habitats not favourable to nesting, i.e. fi r forest and riparian forest. Traps placed on the forest floor in ground cover contained more individuals and species of bees, with 1192 individuals (88.8%) and 76 species, than in the canopy layer, with 150 individuals (11.2%) and 23 species. This trend was consistent across all the habitats in the Landscape Park.

scholarly journals Reaction of Coniferous Forest Vegetation to Particulate Deposition Under Alkaline Pressure

2011 ◽  
Vol 7 ◽  
pp. 229-246 ◽  
Author(s):  
Anna Świercz
Keyword(s):  
Coniferous Forest ◽  
Control Site ◽  
Sem Analysis ◽  
Stress Factors ◽  
Species Number ◽  
General Tendency ◽  
Forest Communities ◽  
Dust Deposition ◽  
Declining Species ◽  
Study Sites

The aim of this study was to determine direction, rate and character of the changes in coniferous forest communities caused by anthropogenic stress factors (alkaline emission and imission) changing with time. To fulfil this goal, we have performed comprehensive studies of soils and plants at the study sites located in coniferous forest communities remaining under direct influence of cement and lime industry in the Świętokrzyskie Voivodeship. There were differences in the accumulation of elements in pine needles collected at alkalized sites in comparison with needles from the control site: Ca content was 2.5 times higher and Cu, Pb and Sr contents were 2–3 times higher, while Al and Fe, and Mn contents were twice and 10 times lower respectively. SEM analysis of morphological features of pine needle surface, in particular degree of preservation of epicuticular waxes can be as an indicator of assimilatory organ degeneration caused by dust deposition which induces wax layer erosion. Declining species number and biodiversity, particularly conspicuous at the Sitkówka site, was a general tendency observed over the study period (from 18 to 10 years). Other noticeable processes include slow regenerative changes of the community with a tendency towards higher contribution of acidophilic coniferous forest species with lower light and temperature requirements and suppression of meadow, ruderal and associated taxa. Further studies are required in order to define succession rate and direction of changes in species composition of these communities.

scholarly journals Edaphic characteristics of Austrian pine (Pinus nigra Arn.) forests in the Visegrad area

2016 ◽  
Vol 68 (2) ◽  
pp. 355-362
Author(s):  
Velibor Blagojevic ◽  
Milan Knezevic ◽  
Olivera Kosanin ◽  
Marijana Kapovic-Solomun ◽  
Radovan Lucic ◽  
...  
Keyword(s):  
Pinus Nigra ◽  
Research Area ◽  
Geological Structure ◽  
Forest Communities ◽  
Production Potential ◽  
High Production ◽  
Highly Correlated ◽  
The Impact ◽  
Important Basis ◽  
Forest Habitats

This paper presents the results of soil research in Austrian pine (Pinus nigra Arn.) forest communities in the Visegrad area, carried out to determine the basic soil characteristics and eco-production potential of forest habitats as an important basis and framework for the successful management of these forests on the principles of sustainable development. Austrian pine forests in this region are an important and ecologically valuable community. The complexity of the geological structure and relief dynamics are dominant environmental factors that condition the expressed variability of soils in the study area. Forest communities of Austrian pine are formed on the peridotites and serpentinites, eutric ranker (haplic leptosol), eutric cambisol (haplic cambisols) and pseudogley (haplic planosol), dense granular and marl limestones calcomelanosol (mollic leptosol), rendzina (rendzic leptosol) and calcocambisol (leptic cambisol). The productivity of these soils is highly correlated with depth and texture composition, and the impact of these factors is linked with soil type, climate and other site conditions. In the research area, soil types with low production potential such as rankers, rendzinas, limestone and dolomite calcomelanosol are dominant. Deeper variants of eutric cambisol, pseudogley and calcocambisol can be classified as soils with moderate to high production potential.

scholarly journals COLLEMBALLS OF ECOSYSTEMS DOMINATED BY SAMSHIT KOLKHIDA IN THE SOCHINSKY BLACK SEA ZONE

2021 ◽  
Vol 6 (1(34)) ◽  
pp. 4-7
Author(s):  
Yuri Georgievich Shcherbina
Keyword(s):  
Black Sea ◽  
Quantitative Assessment ◽  
Olympic Games ◽  
The State ◽  
Forest Communities ◽  
Black Sea Region ◽  
Qualitative And Quantitative ◽  
The Olympic Games

According to the qualitative and quantitative assessment of springtails communities since 2007, the dynamics of the state of the Colchis boxwood ecosystems in the Sochi Black Sea region has been estimated. The conclusion about the dynamics of degradation of forest communities, unique for the coast, after the Olympic Games-2014 is substantiated.

scholarly journals Qualitative and Quantitative study of Epipelic algae in Tigris River within Baghdad City, Iraq

2014 ◽  
Vol 11 (3) ◽  
pp. 1074-1082
Author(s):  
Baghdad Science Journal
Keyword(s):  
Benthic Algae ◽  
Lotic Ecosystems ◽  
Qualitative And Quantitative ◽  
Tigris River ◽  
Spatial And Temporal Distributions ◽  
Number Species ◽  
Study Sites ◽  
One Year ◽  
Qualitative And Quantitative Study

The present study conducted to study epipelic algae in the Tigris River within Baghdad city for one year from September 2011 to August 2012 due to the importance role of benthic algae in lotic ecosystems. Five sites have been chosen along the river. A total of 154 species of epipelic algae was recorded belongs to 45 genera, where Bacillariophyceae (Diatoms) was the dominant groups followed by Cyanophyceae and Chlorophyceae. The numbers of common types in three sites were 47 species. Bacillariophyceae accounted 88.31% of the total number of epipelic algae, followed by Cyanophyceae 7.14 % and Chlorophyceae 4.55%. A 85 species (29 genera) recorded in site 1, 103 species (34 genera) in site2, 112 species (35 genera) in site3, 96 species (32 genera) in site4, and 85 species (29 genera) in site5. Spatial and temporal distributions of epipelic algae were noticed in this study. The higher total number of epipelic algae (91504.01cell cm-2) was recorded at site 5 in spring 2012, while the lower was (37017.98cell cm-2) in summer 2012 at site1. Some genera have recorded higher number species during the study period; these genera were Nitzschia, Navicula, Cymbella, Gomphonema, Synedra, Achnanthes, Oscillatoria, and Lyngbya. The study revealed that Bacillariophyceae were more prominent within all study sites and followed by Cyanophyceae, while a few numbers of Chlorophyceae was appeared.

Root, shoot and leaf traits of the congeneric Styrax species may explain their distribution patterns in the cerrado sensu lato areas in Brazil

2011 ◽  
Vol 38 (3) ◽  
pp. 209 ◽  
Author(s):  
Gustavo Habermann ◽  
Anna C. G. Bressan
Keyword(s):  
Leaf Area ◽  
Riparian Forest ◽  
Leaf Traits ◽  
Distribution Patterns ◽  
Co2 Assimilation ◽  
Sensu Stricto ◽  
Shoot Length ◽  
Deep Roots ◽  
Number Of Leaves ◽  
Forest Habitats

Shoot and root lengths, the number of leaves, biomass and leaf area were measured in Styrax ferrugineus Nees and Mart., Styrax camporum Pohl. and Styrax pohlii A. DC cultivated in rhizotrons. Additionally, young individuals of these species were planted in a cerrado sensu stricto (s. str.), at the edge and in the understorey of a cerradão, and in the understorey of a riparian forest. Six months after planting, the specific leaf area (SLA) and the CO2 assimilation rate were assessed on an area (Aarea) and mass (Amass) basis. S. ferrugineus exhibited greater root and lower shoot length in comparison to S. pohlii. The high shoot growth and concomitantly substantial root length of S. camporum may illustrate why this species is widely distributed in the cerrado sensu lato areas, whereas the deep roots of S. ferrugineus could account for its occurrence in the cerrado s. str. In the field, an irradiance-diminishing gradient enlarged the SLA of S. pohlii, which positively influenced its Amass, and which could partially explain its occurrence in shady habitats. However, a non-plastic trait, such as the high shoot length of S. pohlii, is more likely to be responsible for the success of this species in forest habitats.

Vegetation–soil relationships along a spruce forest transect in interior Alaska

1979 ◽  
Vol 57 (23) ◽  
pp. 2644-2656 ◽  
Author(s):  
C. T. Dyrness ◽  
D. F. Grigal
Keyword(s):  
Forest Floor ◽  
Narrow Band ◽  
Black Spruce ◽  
White Spruce ◽  
Spruce Forest ◽  
Forest Communities ◽  
Soil Series ◽  
Highly Correlated ◽  
Forest Transect ◽  
Upper Slope

Five distinct forest communities were recognized along a 3-km transect. These are, listed in order of decreasing elevation: (i) open black spruce/feathermoss - Cladonia, (ii) closed black spruce/feathermoss, (iii) open black spruce/Sphagnum, (iv) black spruce woodland/Eriophorum, and (v) white spruce/alder/Calamagrostis (restricted to a narrow band adjacent to a stream). Several techniques of ordination were used to recognize these five forest communities plus two intergrades: (open black spruce/feathermoss - Cladonia) - (Sphagnum) and open black spruce/Sphagnum - woodland/Eriophorum.The distribution of two-thirds of the plant species was highly correlated with vegetation–slope zones. Results of the fit of Gaussian curves also suggest that vegetation boundaries were well placed. The distribution of the four soil series in the area was well correlated with vegetation–slope zones: three were limited to one zone each. Permafrost, absent from the soil on the ridgetop and upper slope, was generally within 40 to 50 cm of the surface elsewhere and tended to be at shallower depths as elevation decreased. The most striking differences in forest floor properties were found in the white spruce zone compared with the six black spruce dominated zones. The white spruce forest floor was markedly thinner and had higher levels of nutrients. In the six black spruce dominated zones, forest floor thickness and concentrations of N and Mg tended to increase with distance downslope, and P and K decreased.

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