scholarly journals Synanthropic plants as indicators of the ecological state of city of Samara

2016 ◽  
Vol 5 (1) ◽  
pp. 31-34
Author(s):  
Natalya Vyacheslavovna Ivanova
Keyword(s):  
Ecological Condition ◽  
Cultivated Plants ◽  
Forest Steppe ◽  
Ecological State ◽  
Urban Flora ◽  
Adventitious Species ◽  
History Of ◽  
Index Index ◽  
The City ◽  
Synanthropic Flora

This article focuses on the analysis of synanthropic flora of Samara. It surveys the history of the research of the flora of the city of Samara, and states that it is possible to base the estimation of the ecological condition of the city of Samara on the process and degree of synanthropy. When studying urbanoflorae different authors define the concept of synanthropic flora differently. O.P. Vinkovskaya, E.P. Gnatyuk, and G.S. Antipina, K.V. Kachkin, I.G. Sokolova, T.V. Astakhova, T.A.Terekhina dealt with issues of terminology. The author believes that the synantropic flora consists of adventitious cultivated plants, adventitious ruderal weeds and apofyte types. In the conditions of the increasing anthropogenous change the process of synanthropization of the vegetable cover becomesquite urgent. The article describes the structure of the synanthropic fraction of the urban flora of Samara. The author notes that in the synanthropic fraction the share of monocotyledonous plants has considerably decreased, and that the adventitious species prevail, the flora being made up by forest-steppe boreal, nemoral and multizone plants. In the analysis of the synanthropic component of the flora such indicators as the flora synanthropy index, the adventivity index, index of the apofyteness and the index of cultivation have been calculated. The author comes to the the conclusion that synanthropy causes reduction of the flora variety

Survey of the Ecological State of Eight Man-Made Lakes Within the City Limits of Freiburg, Germany

1992 ◽  
Vol 27 (2) ◽  
pp. 301-310
Author(s):  
Agnes G. Pulvermüller ◽  
Heidulf E. Müller
Keyword(s):  
Escherichia Coli ◽  
Water Quality ◽  
Biochemical Oxygen Demand ◽  
Secchi Depth ◽  
Oxygen Demand ◽  
Ecological Condition ◽  
Ecological State ◽  
Biological Parameters ◽  
The City ◽  
Oxygen Profiles

Abstract The survey of the ecological condition of eight lakes within the city limits of Freiburg included hydrochemical measurements and analyses (oxygen profiles, Secchi depth, pH, biochemical oxygen demand) together with biological parameters (chlorophyll a, phytoplanktonbiomass, Escherichia coli counts), as well as parasitic examinations. Only some of the investigated parameters are presented here. Seven of the eight lakes were found to be eutrophic. The process of eutrophication appears to be still in progress. One lake can be considered to be hypertrophic. Schistosome dermatitis was observed. The water quality in general was considered to be acceptable; suggestions to maintain or improve the water quality are made.

scholarly journals Archaeological Sites of the Middle Kiya River: History of Discoveries and Study Prospects

2020 ◽  
Vol 22 (3) ◽  
pp. 648-663
Author(s):  
A. S. Savelieva ◽  
P. V. German ◽  
I. A. Plats ◽  
L. Yu. Bobrova
Keyword(s):  
River Valley ◽  
Archaeological Sites ◽  
Forest Steppe ◽  
South Siberia ◽  
History Of ◽  
The 1950S ◽  
Xix Century ◽  
The City

The article introduces some information about the expeditionary studies on the archaeological sites located on the banks of the Middle Kiya River valley. The authors believe that the Kiya is one of the main rivers for such important historical and cultural area of South Siberia as the Kiya – Chulym interfluve. The expeditionary studies have been conducted here since the late XIX century; however, professional archaeological studies began as late as in the 1950s. The paper describes the excavations conducted by A. I. Martynov, G. S. Martynova, I. I. Baukhnik, A. M. Kilemzin, A. V. Tsirkin, A. P. Okladnikov, V. I. Molodin, V. V. Bobrov, A. S. Vasyutin, V. N. Zharonkin, P. V. German, A. V. Fribus, and P. G. Sokolov. It focuses on the carefully planned excavations conducted on the banks of the middle forest-steppe part of the Kiya River valley. Seven expeditions discovered eighty previously unknown archaeological sites. While performing the historiographic mapping of archaeological sites, the authors took into account the type of artifact and the type of archaeological study. The authors analyzed the localization of the archeological sites near the villages of Shestakovo and Chumay and the city of Mariinsk published by A. M. Kulemzin and I. I. Baukhnik and compared them with the results of the mapping. They defined the territory as a single Middle-Kiya archaeological microdistrict that includes the archaeological complexes of Shestakovo, Chumay, and Archekas (Mariinsk). The article also includes some preliminary ideas about the types of archaeological studies, as well as typological and chronological description of the monuments.

scholarly journals Lviv Reservoirs: Current Geo-Ecological Status and Opportunities for its Improvement

2019 ◽  
Keyword(s):  
Water Pollution ◽  
Residential Buildings ◽  
Ecological Status ◽  
Ecological Condition ◽  
Municipal Sewage ◽  
Physical Parameters ◽  
Ecological State ◽  
Industrial Enterprises ◽  
Catchment Areas ◽  
The City

Purpose of the work is to characterize the geo-ecological condition of the reservoirs in Lviv in order to develop recommendations for the protection, conservation and enhancement of their functional use. Methods. Field, cartographic, historical, analysis and synthesis. Results. The geo-ecological state of modern reservoirs of Lviv has been investigated. Water pollution of represented reservoirs has been analyzed according to the fund and statistical materials. In the course of the field researches the physical parameters of the water condition have been analyzed, sources of pollution of reservoirs, clogging and overall assessment of coastal water protection strip shave been identified. Most of the reservoirs of Lviv are characterized by littering of the coastal strip, recreational impact, proximity to roads and residential buildings. The color of the water in the majority of the reservoirs is grayish-yellow, the transparency of the water is low, the smell is marsh or earthy-grassy. Ten of the twenty-three reservoirs under study have strong and over-eutrophication. In summer, some are completely overgrown with algae. The condition of the basin in 70% of Lviv reservoirs is natural. This contributes to the additional intake of pollutants from the catchment area. Ponds where the basin is covered with an artificial surface (mainly concrete) have better water quality. In particular, Levandivskyi has become the only one to have clean water at the beginning of 2019. In recent years, the water reservoirs of the city have been significantly shallow, due to the construction of catchment areas and the discharge of rainwater to the general sewer. Conclusions. Irrational use of city reservoirs leads to water pollution, siltation and overgrowth of urban reservoirs, rapid eutrophication, clogging, etc. Reservoirs near leased restaurants and recreational facilities are in the best condition. The ponds located in park areas (Stryiskyipark, Pohulianka, Shevchenko-ethnopark, Piskovi Ozera) are in a satisfactory geo-ecological state. The most neglected are the reservoirs of former industrial enterprises, which are under control of district administrations. Taking into consideration the multifunctional importance of reservoirs for the city, recommendations have been developed to improve their geo-ecological state, mainly they are organizational (monitoring the status of reservoirs, introduction of ecological passport of the reservoir, increasing control), technical (separation of rain and municipal sewage, technical care), educational (stands, eco-actions, festivals) measures.

The Influence of the Specificity of the Soil Cover of Post-Technogenic Landscapes of Kuzbass on the Restoration of Communities of Carabid Beetles (Coleopter, Carabidae).

2019 ◽  
Vol 23 (1) ◽  
pp. 55-59
Author(s):  
A.N. Bespalov ◽  
V.A. Androkhanov
Keyword(s):  
Soil Cover ◽  
Steppe Zone ◽  
Ecological Condition ◽  
Carabid Beetles ◽  
Forest Steppe ◽  
Ecological State ◽  
Forest Species ◽  
Full Strength ◽  
Disturbed Areas ◽  
Technogenic Landscapes

The ecological condition of the soil cover of technologically disturbed areas was studied. It has been established that the general soil-ecological state of the plots with agricultural re-cultivation and self-restoration is characterized, as a good one, with the forest re-cultivation — as satisfactory. Communities of carabid beetles at the dumps of the forest-steppe zone of Siberia are formed according to the meadow type. In the surveyed dumps, in 30 years, the carabid beetles communities are gradually restored, but not in full strength. In the area with forest remediation, forest species begin to be settled, however, representatives of the meadow cenosis are also preserved. From this it follows that the forest direction of remediation requires more time to restore the population of carabid beetles, corresponding to the established biocenosis.

History of the City of Rome in the Middle Ages

2009 ◽  
Author(s):  
Ferdinand Gregorovius ◽  
Annie Hamilton
Keyword(s):  
Middle Ages ◽  
History Of ◽  
The City ◽  
The Middle Ages

History of the City of Rome in the Middle Ages

2009 ◽  
Author(s):  
Ferdinand Gregorovius ◽  
Annie Hamilton
Keyword(s):  
Middle Ages ◽  
History Of ◽  
The City ◽  
The Middle Ages

Ras al Khaimah: further archaeological discoveries

Antiquity ◽  
1976 ◽  
Vol 50 (200) ◽  
pp. 216-222
Author(s):  
Beatrice De Cardi
Keyword(s):  
United Arab Emirates ◽  
The State ◽  
Focused Attention ◽  
North East ◽  
The North ◽  
History Of ◽  
The City

Ras a1 Khaimah is the most northerly of the seven states comprising the United Arab Emirates and its Ruler, H. H. Sheikh Saqr bin Mohammad al-Qasimi, is keenly interested in the history of the state and its people. Survey carried out there jointly with Dr D. B. Doe in 1968 had focused attention on the site of JuIfar which lies just north of the present town of Ras a1 Khaimah (de Cardi, 1971, 230-2). Julfar was in existence in Abbasid times and its importance as an entrep6t during the sixteenth and seventeenth centuries-the Portuguese Period-is reflected by the quantity and variety of imported wares to be found among the ruins of the city. Most of the sites discovered during the survey dated from that period but a group of cairns near Ghalilah and some long gabled graves in the Shimal area to the north-east of the date-groves behind Ras a1 Khaimah (map, FIG. I) clearly represented a more distant past.

Ukrainian Chernozem Fertility Reproduction under Soil Conservation Agriculture

2020 ◽  
pp. 67-79
Author(s):  
Yu. Kravchenko
Keyword(s):  
Soil Conservation ◽  
Agricultural Land ◽  
Crop Yields ◽  
Conservation Agriculture ◽  
Instructional Materials ◽  
Cultivated Plants ◽  
Forest Steppe ◽  
Typical Chernozem ◽  
Degradation Processes ◽  
Biological Potential

In Ukraine 57.5 % of agricultural land is subjected to erosion with 10–24 million tons of humus, 0.3–0.96 million tons of nitrogen, 0.7–0.9 million tons of phosphorus and 6–12 million tons of potassium lost annually. Degradation processes are also common on chernozems, which cover about 60 % of the Ukrainian territory. The aim of the research is to defi ne the most eff ective soil conservation practices and legislative decisions aimed to conservation/recovering the Ukrainian chernozem fertility. The experimental data of the agrochemical certifi cation of Ukrainian lands, data from scientifi c papers, stock and instructional materials as well as our own fi eld and laboratory studies were used. It has been established that the long-term use of deep subsurface tillage on typical chernozem increases, compared with plowing, the content of 10–0.25 mm of air-dry and water-resistant aggregates, the bulk density, soil water storages, water infi ltration rates, the content of mobile phosphorus and exchangeable potassium, pHH2O, CaCO3 stocks, the contents of humic and fulvic acids, molecular weights of humic acids – by 5.5 and 3.06 %; 0.05 g/cm3; 25.5 mm; 22.6 mm/h; 0.1 and 3 mg/100 g of soil; 0.03 pHH2O; 18 t/ha, 0.02 and 0.04 %, 91195 kDa, respectively. Fertilizers may contribute to the crop yields increase from by 60% in the Polissya, by 40 % – in the Forest Steppe, by 15 % – in the Wet Steppe, by 10 % – in the Dry Steppe and by 40 % – in the Irrigated Steppe areas. In soil-conservation rotations, the crop placement and alternation are advisable to combine with strips or hills sowing, taking into account the local relief features; soil alkalinization, applying anti-erosion structures. Ukrainian agriculture will receive additional 10–12 million tons of forage units or 20–22 % from all fodder in a fi eld agriculture under increasing 8–10 % of arable lands for intercrops. It is advisable to mulch the eroded chernozems of Ukraine depending on their texture composition: 1.3 t/ha of mulch for sandy and loamy soils, 1.9 t/ha – for sandy and 1.1 t/ha – for loamy soils. The implementation of soil conservation agriculture can minimize some soil degradation processes and improve eff ective soil properties required to realize the biological potential of cultivated plants. Key words: chernozem, degradation, fertility, soil conservation technologies, agriculture policy.

Review: Urban Latino Cultures: La Vida Latina en LA by Gustavo Leclerc, Raúl Villa, and Michael J. Dear (eds.)

1999 ◽  
Vol 22 (1) ◽  
pp. 126-128
Author(s):  
Catherine S. Ramirez
Keyword(s):  
Twentieth Century ◽  
Los Angeles ◽  
Mexican American ◽  
History Of ◽  
Crime Wave ◽  
Eighteenth And Nineteenth Centuries ◽  
The City ◽  
History Of Los Angeles

Throughout the twentieth century (and now the twenty-first), the specter of a Latina/o past, present, and future has haunted the myth of Los Angeles as a sunny, bucolic paradise. At the same time it has loomed behind narratives of the city as a dystopic, urban nightmare. In the 1940s Carey McWilliams pointed to the fabrication of a “Spanish fantasy heritage” that made Los Angeles the bygone home of fair señoritas, genteel caballeros and benevolent mission padres. Meanwhile, the dominant Angeleno press invented a “zoot” (read Mexican-American) crime wave. Unlike the aristocratic, European Californias/os of lore, the Mexican/American “gangsters” of the 1940s were described as racial mongrels. What's more, the newspapers explicitly identified them as the sons and daughters of immigrants-thus eliding any link they may have had to the Californias/os of the eighteenth and nineteenth centuries or to the history of Los Angeles in general.

Appreciation of the importance of pregravid preparation and reproductive attitudes of women of childbearing age in the city of Omsk

GYNECOLOGY ◽  
2018 ◽  
Vol 20 (6) ◽  
pp. 48-52
Author(s):  
E N Kravchenko ◽  
R A Morgunov
Keyword(s):  
Women Of Childbearing Age ◽  
Childbearing Age ◽  
Pregnancy And Childbirth ◽  
Perinatal Center ◽  
History Of ◽  
Group A ◽  
Group B ◽  
Complicated Pregnancy ◽  
The Relationship ◽  
The City

The aim of the study. Assess the importance of pregravid preparation and outcomes of pregnancy and childbirth, depending on the reproductive attitudes of women in the city of Omsk. Materials and methods. The study included 92 women who were divided into groups: group A (n=43) - women whose pregnancy was planned; group B (n=49) - women whose pregnancy occurred accidentally. Each group was divided into subgroups depending on age: from 18 to 30 and from 31 to 49 years. For each patient included in the study, a specially designed map was filled out. These patients were interviewed at the City Clinical Perinatal Center. Results. Comparative analysis revealed the relationship between the reproductive settings of women of childbearing age and the peculiarity of the course of pregnancy and childbirth in these patients. Summary. The majority of women of fertile age are married: in subgroup AA - 25 (96.2%), AB - 13 (76.5%), BA - 25 (92.6%), BB - 20 (91.0%). The predominant number of women of fertile age have one or more abortions: in subgroup AA - 12 (46.2%), AB - 6 (35.3%), in subgroups of comparison BA - 8 (29.6%), BB - 6 (27.3%). More than half of the women of fertile age surveyed have a history of untreated cervical pathology (from 40.8% to 64.7%). The course of pregnancy in women planning pregnancy in most cases proceeded without complications: in subgroup AA - 13 (50.0%), AB - 11 (64.7%). The most common cause of complicated pregnancy in women whose pregnancy occurred accidentally is the threat of spontaneous miscarriage: in subgroup BA - 15 (55.6%), BB - 16 (72.7%). The uncomplicated course of labor more often [subgroup AA - 19 (73.0%), AB - 12 (70.6%)] was observed in women whose pregnancy was planned and they were motivated to give birth to a healthy child.

Sign in / Sign up

Export Citation Format

Share Document