scholarly journals The Lake Pizanets (Republic of Karelia, Russia) – a new site for establishingthe protected area

2021 ◽  
Vol 4 (2) ◽  
Author(s):  
Sergey F. Komulaynen ◽  
Igor A. Baryshev ◽  
Alexandra N. Kruglova ◽  
Yulia L. Slastina ◽  
Maksim S. Potakhin ◽  
...  
Keyword(s):  
Species Composition ◽  
Protected Area ◽  
Monitoring Program ◽  
Anthropogenic Factors ◽  
Hydrochemical Regime ◽  
Low Degree ◽  
Freshwater Bodies ◽  
Lake Waters ◽  
High Degree ◽  
Natural And Anthropogenic Factors

A survey of the morphological and hydrological characteristics of the lake and analysis of the species composition, abundance, and biomass of phytoplankton, phytoperiphyton, zooplankton, and zoobenthos were carried out as a part of the complex study for establishing a new protected area “Lake Pizanets”. The effect of natural and anthropogenic factors on the hydrochemical regime and structure of aquatic ecosystems of the lake was assessed. The trophic status of the lake, its saprobity, and the significance of particular communities and bioindication indices were estimated. The species composition and dominant species of the studied communities of the lake were quite typical for freshwater bodies of the region. Despite the fact that the abundance and biomass of macrozoobenthos turned out to be lower than in other lakes of Eastern Fennoscandia, generally, the abundance and biomass of phytoplankton, phytoperiphyton, zooplankton, and zoobenthos evidenced on relatively high degree of their development in the lake Pizanets, as well as on their activity and stability. At the same time, the species, forming the communities, differed in size noticeably; therefore, significant discrepancies were found between the lists of taxa dominating by abundance and by biomass. The biotic indices and hydrochemical indicators indicated mainly a low degree of pollution, so the lake waters could be classified as belonging to water purity class II. Nowadays, the lake is not affected by significant anthropogenic load. However, according to the program of establishing new protected areas, further control of the hydrobiological and hydrochemical indicators of the reservoir, as well as its inclusion in the environmental monitoring program is undoubtful.

scholarly journals THE CURRENT STATE OF THE WATERCOURSES OF THE LAKE SEGOZERO BASIN (SEGOZERO RESERVOIR, REPUBLIC OF KARELIA, RUSSIA)

Ekosistemy ◽  
2021 ◽  
pp. 60-71
Author(s):  
S. F. Komulaynen ◽  
I. A. Barihshev ◽  
A. N. Kruglova ◽  
N. E. Galakhina ◽  
K. M. Nikerova
Keyword(s):  
Trophic Status ◽  
Aquatic Organism ◽  
Anthropogenic Factors ◽  
Lake Basin ◽  
Single Group ◽  
Biological Communities ◽  
Current State ◽  
Reliable Monitoring ◽  
High Degree ◽  
Natural And Anthropogenic Factors

The chemical features and the structure of biological communities in the in the three watercourses of Segozero Lake basin. Analysis for the species composition, abundance and biomass of phytoperiphyton, zooplankton, and zoobenthos was carried out. The effect of natural and anthropogenic factors on the formation of the chemical features and structure of lake hydrobiocenoses was analyzed. Variations in the structure of aquatic organism communities are due primarily to specific hydrographic and hydrological characteristics of river stretches. The paper is discussed the main principles of the changes in a structure and functioning of hydrobiont communities in rivers. The trophic status of the rivers, their saprobiological slate, and the significance of individual communities and biotic indices for bioindication of the ecological state of the rivers, are estimated. We concluded that consideration of three groups of organisms enables more comprehensive and reliable monitoring than assessment based on a single group. The abundance and biomass of phytoplankton, phytoperiphyton, zooplankton, and zoobenthos suggest the relatively high degree of their development in lake water, as well as their activity and stability. A peculiarity of the structure of hydrobiocenoses is that they consist of species with appreciably different sizes: from several microns to several centimeters. Therefore, the lists of species dominating in terms of abundance and biomass differ appreciably.

scholarly journals Evaluation of a potential reintroduction site for the white-winged guan Penelope albipennis (Aves, Cracidae) in northern Peru

Oryx ◽  
2004 ◽  
Vol 38 (4) ◽  
pp. 448-451
Author(s):  
Fernando Angulo ◽  
Javier Barrio
Keyword(s):  
Species Composition ◽  
Plant Species ◽  
Tree Species ◽  
Protected Area ◽  
Current Range ◽  
Degree Of Protection ◽  
Risk Of Extinction ◽  
Northern Peru ◽  
Undisturbed Forest ◽  
High Degree

The white-winged guan Penelope albipennis (Aves, Cracidae) is a Critically Endangered bird endemic to northern Peru. We surveyed a protected area suitable for its reintroduction north of the species' current range. Following IUCN guidelines, four factors were evaluated: diversity and quantity of plant species that are part of the white-winged guan's diet, year-round water sources, resting and roosting cover, and extent of undisturbed forest. Several suitable small valleys or quebradas were inspected, but our evaluation focused on three. We identified all shrub and tree species to compare with habitat currently used by the guan. Cover for nesting places was assessed visually. We found species composition and microhabitat types to be similar to habitat presently used by wild guans. Thus, all habitat components are favourable for reintroduction. The high degree of protection of the area makes it particularly suitable as a reintroduction site. We recommend experimental extension of the species current range to mitigate the risk of extinction posed by catastrophic events.

scholarly journals Response of communities of water organisms to anthropogenic changes in mineralization small steam (White Sea basin, Republic of Karelia, Russia)

2021 ◽  
Vol 4 (1) ◽  
pp. 20-34
Author(s):  
Sergey F. Komulaynen ◽  
Igor A. Baryshev ◽  
Alexandra N. Kruglova ◽  
Yulia L. Slastina ◽  
Alexandr V. Ryzhakov ◽  
...  
Keyword(s):  
Anthropogenic Factors ◽  
Vital Activity ◽  
North West ◽  
Dominant Complex ◽  
European Part Of Russia ◽  
New Type ◽  
White Sea Basin ◽  
Iron Ore Deposit ◽  
High Degree ◽  
Natural And Anthropogenic Factors

An increase in water mineralization in the Kenti River has occurred as a result of mining at the Kostomuksha iron ore deposit (Republic of Karelia, north-west of the European part of Russia); it has become a relatively new type of anthropogenic impact. Meantime, the total mineralization of water in the upper reaches of the Kenti River reached 800 mg/L. The species composition, abundance and biomass of phytoplankton, phytoperiphyton, zooplankton, and zoobenthos were analyzed. The influence of natural and anthropogenic factors on the chemical composition and formation of the structure of aquatic biocoenoses was assessed. The trophic status of the river, its saprobity, and the significance of particular communities and biotic indices for bioindication of the ecological state was studied. Dominant complex of the Kenti River was represented by a small number of species that were resistant to the dynamic load of water. The abundance and biomass of phytoplankton, phytoperiphyton, zooplankton, and zoobenthos made it possible to conclude on rather high degree of their development in river, as well as on their vital activity and flexibility. It was then reported on the ability of the river ecosystem to restore.

The importance of pore water chemistry on mechanical and engineering properties of clay soils

1984 ◽  
Vol 311 (1517) ◽  
pp. 369-373 ◽  
Keyword(s):  
Shear Strength ◽  
Clay Soil ◽  
Strength Properties ◽  
Engineering Properties ◽  
Clay Soils ◽  
Anthropogenic Factors ◽  
Sewer Systems ◽  
Quick Clay ◽  
High Degree ◽  
Natural And Anthropogenic Factors

The classical Coulomb-Terzaghi shear strength equation, (cr— tan depends not only upon mechanical and mineralogical factors, but to a high degree upon the total chemistry of the system. Changes in chemistry owing to natural and anthropogenic factors may change the strength properties of a given clay soil at a given water content. The classical example of slow acting chemical changes is the development of quick clay properties. Modern infiltration of different electrolytes and detergents from leaking sewer systems may change shear strength and compressibility of the ground. These processes are different in clays of expanding and nonexpanding minerals. The importance of the different cation species seems to depend upon valency and polarizability. Influence of anions is more complicated and depends upon interaction with edge charges and the crystalline properties of the clay minerals.

Research paper. Factors That Attract Birds within the Area of the International Airport Craiova, Romania, and Certain Control Measures

2016 ◽  
Vol 59 (2) ◽  
pp. 235-240
Author(s):  
Mirela Sabina Ridiche ◽  
Tudor Ciprian Radu Pătruțoiu ◽  
Angela Petrescu
Keyword(s):  
Environmental Conditions ◽  
Anthropogenic Impact ◽  
Control Measures ◽  
Anthropogenic Factors ◽  
International Airport ◽  
Trophic Resources ◽  
Close Proximity ◽  
High Degree ◽  
Natural And Anthropogenic Factors ◽  
Made In

Abstract The present study renders the results of the observations made in the biotopes located within the perimeter of International Airport Craiova and its close proximity (0-3 km), during all the seasons between 2013 and 2014. During the research, we recorded a total of 58 species of birds, many of them showing a high degree of adaptability to the environmental conditions marked by an increased anthropogenic impact. Large-sized species that fly highly and the species characterized by a gregarious behaviour, represent a real threat to aircraft safety. The temporary or longer presence of birds in the area of the airport is due to the optimum living conditions generated by a series of natural and anthropogenic factors. Besides the enumeration and presentation of the way these factors act, we developed a series of measures that can reduce or counteract the area attractiveness to birds by eliminating or restricting to a minimum the trophic resources and opportunities for rest.

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