scholarly journals FORM DIVERSITY OF POPULUS NIGRA L., P. LAURIFOLIA LEDEB. AND P. × JRTYSCHENSIS CHANG Y. YANG IN THE NORTH-WESTERN PART OF THE ALTAI-SAYANIAN MOUNTAIN AREA

2017 ◽  
Vol 2017 (2) ◽  
pp. 19-24
Author(s):  
Андрей Климов ◽  
Andrey Klimov ◽  
Борис Прошкин ◽  
Boris Proshkin
Keyword(s):  
Adaptive Capacity ◽  
River Basin ◽  
Systematic Study ◽  
Sustainable Construction ◽  
Mountainous Area ◽  
Mountain Area ◽  
Breeding Potential ◽  
The North ◽  
Initial Basis ◽  
North Western

The study of the form diversity of Siberian poplar species P. nigra , P. laurifolia and P. × jrtyschensis serves as the initial basis for identifying the adaptive capacity of populations, their economically valuable forms and breeding potential. The carried out analysis of the polymorphism of the species in nature and their cultivated forms showed their considerable diversity in terms of their habitual characteristics. It was revealed that the species of P. nigra , P. laurifolia and P. × jrtyschensis have been studied rather irregularly. The paper features an assessment of the form diversity in the North-Western part of the Altai-Sayan mountainous area. The analysis was performed on the basis of qualitative features of the crown, bark, leaves and shoots. Within the studied territory, P. nigra is characterized by the presence of two morphotypes, according to the nature of the pubescence and two distinct forms of bark color. It has been established that the populations of P. laurifolia of the Tom’ river basin are characterized by a greater polymorphism, both according to the diversity of morphotypes of shoots and pubescence, and by the color and structure of the cortex. The white and green bark forms of the laurel poplar are valuable for sustainable construction and selection work. In P. × jrtyschensis , gray bark forms predominate in populations, and its diversity requires a further systematic study.

scholarly journals Monitoring the Macrozoobenthos of the Sasar River Basin, Based on Some Ecologic Indices

2010 ◽  
Vol 67 (2) ◽  
Author(s):  
Oana MARE ROŞCA ◽  
Lucia MIHALESCU
Keyword(s):  
River Basin ◽  
Catchment Basin ◽  
Hydrographic Basin ◽  
The North ◽  
Baia Mare ◽  
North Western

The hydrographic basin of the Sasar River is located in the North-Western part of Romania, and it totalizes 311 km2. A large part of the catchment basin is within the mining perimeter of Baia Mare; the Sasar River is its main drainage axis. Subsequent to the systematic studies of 2003-2006, 74 taxons were identified.

scholarly journals PREHISTORIC ARCHAEOLOGY IN NORTHERN AUSTRALIA

1986 ◽  
Vol 7 (2) ◽  
pp. 1-3
Author(s):  
Harry Allen
Keyword(s):  
Fresh Water ◽  
Coastal Plain ◽  
Northern Territory ◽  
Northern Australia ◽  
Prehistoric Archaeology ◽  
Wet Season ◽  
Mountain Area ◽  
Plain Area ◽  
The North ◽  
North Western

The northern part of North Australia is not far from Java and Timor. There are great numbers of influences in the North Western part of Australia from Indonesian region. The coast alligator river area is 200 kilometres east of Darwin, Northern Territory is now 60 kilometres from the coast to the mountain area. The plain area is flat and the water is salty, being tidal on the coast. Further inland the river is fresh water. To day there are few mangroves in this area, but there is evidence that mangroves were more widespread between 6.000 - 3.000 BP. During the wet season the coastal plain is flooded.

scholarly journals MORPHOMETRIC CHARACTERISTICS OF RIVER BASINS OF THE NORTH-WESTERN SLOPE OF THE CRIMEAN MOUNTAINS (ZAPADNYY BULGANAK, ALMA, KACHA, BELBEK, CHERNAYA RIVER BASINS)

2021 ◽  
Vol 7 (73) (3) ◽  
pp. 267-278
Author(s):  
V. A. Tabunshchik
Keyword(s):  
River Basin ◽  
Calculated Data ◽  
River Basins ◽  
Shuttle Radar Topography Mission ◽  
Western Slope ◽  
Morphometric Characteristics ◽  
Crimean Peninsula ◽  
Crimean Mountains ◽  
The North ◽  
North Western

Zapadnyy Bulganak, Alma, Kacha, Belbek, Chernaya rivers belong to the rivers of the north-western slope of the Crimean Mountains. The sources of the rivers are located on the north-western slopes of the Main Ridge of the Crimean Mountains, then the rivers flow from east to west almost parallel to each other. Up to about the middle of their course, they have a character typical of mountain streams (except for the Zapadnyy Bulganak River). The river valleys in the upper reaches are V-shaped, narrow, their slopes are dissected by numerous gullies and tributaries. There are almost no tributaries in the middle and lower reaches. In the low-water period (low-water period), drying is observed in the estuaries of rivers. The catchment basins have an elongated shape along the river, expanded in the upper part, which is the main feeding area.The considered river basins, although they have, in comparison with the rest, the river basins of the Crimean Peninsula, are better studied in general, but they are not sufficiently studied. In the article author deals with the main morphometric characteristics of river basins of the North-Western slope of the Crimean Mountains. Using Shuttle Radar Topography Mission (SRTM) and ArcGIS software for river basins Zapadnyy Bulganak, Alma, Kacha, Belbek, Chernaya are analyzed the following morphometric parameters – area of the basin, the symmetry of the basin, length of the basin, width of the basin, configuration and irregularity of the outline of river basin, the highest and lowest elevation within the basin, the average altitude of the river basin, the average slope of the river basin. Some of the morphometric indicators are calculated for the first time. For morphometric indicators that were partially previously calculated using topographic maps and published in literature, a comparison and analysis with the calculated data is provided. It is established that the using of SRTM and the ArcGIS software allows for fairly accurate measurements of morphometric indicators of the river basin.

scholarly journals Climate vulnerability scenario of the agri-fishery communities in the Bicol River Basin, Philippines

2021 ◽  
Author(s):  
Ricky Laureta ◽  
Ric Ryan Regalado ◽  
Ermar De La Cruz
Keyword(s):  
Adaptive Capacity ◽  
River Basin ◽  
National Level ◽  
Vulnerability Index ◽  
The Philippines ◽  
Local Climate ◽  
Rural Agriculture ◽  
Agriculture Sector ◽  
The North ◽  
Projected Changes

Abstract This paper investigated the vulnerability of the agriculture sector and rural agriculture livelihoods in the Bicol River Basin (BRB) of the Philippines to projected changes in climate. The geographical characteristics of the BRB feature eight major sub-basins or watersheds consisting of Libmanan-Pulantuna, Ragay Hills, Thiris, Naga-Yabo, Pawili River, Waras-Lalo, Naporog, and Quinali. The study applied the combination of the participatory tools and the Climate Risk Vulnerability Assessment (CRVA) framework to gather information on local climate vulnerabilities and contexts. Briefly, the CRVA employed geospatial modeling and utilized a number of indicators that are presumed to affect vulnerability including exposure, sensitivity, and adaptive capacity which were aggregated to provide an index of vulnerability. This enabled us to identify areas of exposure and vulnerability and pointed areas of greatest need for strengthened adaptive capacity and risk management. Our findings revealed that vulnerability in the BRB was perceived to be relatively prevalent and that typhoons, flooding, and drought were identified to contribute significant impacts to the rural livelihood. Furthermore, our findings in the CRVA suggested significant regional differences in vulnerability in the BRB. Majority of the towns in the north and central portions of the BRB will largely experience increased vulnerability, particularly, in the Thiris sub-basin including some parts of Ragay Hills, Waras-Lalo, and the northwestern Libmanan-Pulantuna sub-basins. On the contrary, the entire Quinali region on the south revealed to have the lowest vulnerability index. The clear policy implication of these accounts will be on how to mobilize developmental thrusts in both areas of disaster risk reduction and climate change adaptation at the sub-national level to reinforce local-based climate priority setting in adaptation interventions and policies.

scholarly journals The Early Neolithic pottery of Keçiçayiri and its place in the North-western Anatolian Neolithisation process

2019 ◽  
Vol 46 ◽  
pp. 138-156
Author(s):  
Deniz Sari ◽  
Semsettin Akyol
Keyword(s):  
Near East ◽  
Western Anatolia ◽  
Mountainous Area ◽  
Cultural Groups ◽  
Early Neolithic ◽  
Cultural Elements ◽  
Trade Networks ◽  
The Balkans ◽  
The North ◽  
North Western

The region of Inner North-western Anatolia was a key node in the transmission of the Neolithic lifestyle from the Near East to Marmara, and from there to the Balkans and the rest of Europe. It formed the intersection between several important routes and trade networks, and the settlement of Keçiçayırı, the subject of this paper, had an essential role in the transfer of cultural elements during the Neolithic. The settlement is located on a natural communication route that connects the region of Emirdag-Bolvadin with Eskisehir across the mountainous area of Phrygia, between the distribution areas of the Hacılar and Fikirtepe cultural groups. Finds from the site include both Pre-Pottery Neolithic material and Early Neolithic ceramics, and it is therefore among the earliest permanent settlements of the Eskisehir region, and contains some of the earliest evidence for the Neolithisation process. In this paper, the pottery assemblage of the Early Neolithic settlement at Keçiçayırı is discussed, and its place in the spread of Neolithisation from the Near East to Northwestern Anatolia is evaluated when compared to other known sites.

Geological results of the A.A. Chernov Upper-Pechora team

2021 ◽  
Vol 3 ◽  
pp. 75-81
Author(s):  
E.S. Ponomarenko ◽  
Keyword(s):  
Retrospective Analysis ◽  
River Basin ◽  
Systematic Study ◽  
Preliminary Report ◽  
Fairy Tale ◽  
Coal Basin ◽  
The Urals ◽  
The North ◽  
History Of ◽  
The 1960S

The year 1921 marks the beginning of a systematic study of the north of the Urals, which was initiated by the research of the Upper Pechora Geological Team under the leadership of A.A. Chernov, conducted in the Ilych River basin. The research of this territory continues to this day, the author of this paper gives a retrospective analysis of some of A.A. Chernov conclusions in his preliminary report of 1922. The history and some results of the study of Paleozoic reef for-mations are discussed. They are widely distributed in the Ilych River basin and poorly subjected to secondary transfor-mations. A.A. Chernov, in his report, described the bright prospects of the graphite discovered during research. However, upon further investigation, Ilych graphite turned out to be a “beautiful fairy tale” and, after the discovery of the Pe-chora coal basin, it was forgotten. The history of the study and repeated attempts to explore and extract lead ores in the Shantym-Priluk tract, which lasted almost until the 1960s of the XX century, is considered.

scholarly journals Basal ice temperatures during late Weichselian deglaciation: comparison of landform assemblages in west-central Sweden

1999 ◽  
Vol 28 ◽  
pp. 9-15 ◽  
Author(s):  
Ingmar Borgström
Keyword(s):  
Thermal Conditions ◽  
Aerial Photographs ◽  
High Mountain ◽  
Temperature Pattern ◽  
Mountainous Area ◽  
Mountain Area ◽  
The North ◽  
Basal Ice ◽  
West Central ◽  
Late Weichselian

AbstractThe mountainous area of west-central Sweden has a varied glacial morphology and three unique landform assemblages appear to mark areas of different basal thermal conditions during the decay of late Weichselian ice. A glacial geomorphological map was constructed through interpretation of aerial photographs at a scale 1:60 000. The relative abundance of landforms interpreted to indicate a frozen bed, a thawed bed, and late-frozen to thawed-bed conditions were used for a first-order reconstruction of the basal temperature pattern of the decaying ice sheet. The features used to outline areas with different temperature regimes during deglaciation are glacial scouring, flutings, eskers, meltwater channels, boulder blankets, Rogen moraines, relict surfaces and thermoerosion features.In the northern part of the area, as well as along most of the water divide to the Atlantic Ocean, the ice was warm-based during deglaciation. Glacially scoured bedrock, fluting/ drumlinization, subglacial eskers and extensive glacial lake sediments characterize the area. In the high mountain area, lateral meltwater channels are short and curve downslope to form chutes or eskers. The basal ice conditions changed from frozen- to thawedbed in a late stage of the late Weichselian cycle in most of the southern part of the area, shown by the Rogen moraines on both sides of the ice divide. However, substantial areas in the eastern and southern low mountains had frozen-bed conditions during the complete late Weichselian. In the high mountains in the north, only the summits were frozen.

scholarly journals The Early Neolithic pottery of Keçiçayiri and its place in the North-western Anatolian Neolithisation process

2019 ◽  
Vol 46 ◽  
pp. 138-156
Author(s):  
Deniz Sari ◽  
Semsettin Akyol
Keyword(s):  
Near East ◽  
Western Anatolia ◽  
Mountainous Area ◽  
Cultural Groups ◽  
Early Neolithic ◽  
Cultural Elements ◽  
Trade Networks ◽  
The Balkans ◽  
The North ◽  
North Western

The region of Inner North-western Anatolia was a key node in the transmission of the Neolithic lifestyle from the Near East to Marmara, and from there to the Balkans and the rest of Europe. It formed the intersection between several important routes and trade networks, and the settlement of Keçiçayırı, the subject of this paper, had an essential role in the transfer of cultural elements during the Neolithic. The settlement is located on a natural communication route that connects the region of Emirdag-Bolvadin with Eskisehir across the mountainous area of Phrygia, between the distribution areas of the Hacılar and Fikirtepe cultural groups. Finds from the site include both Pre-Pottery Neolithic material and Early Neolithic ceramics, and it is therefore among the earliest permanent settlements of the Eskisehir region, and contains some of the earliest evidence for the Neolithisation process. In this paper, the pottery assemblage of the Early Neolithic settlement at Keçiçayırı is discussed, and its place in the spread of Neolithisation from the Near East to Northwestern Anatolia is evaluated when compared to other known sites.

scholarly journals RECENT TRENDS Of RIVER RUNOff IN THE NORTH CAUCASUS

2018 ◽  
Vol 11 (3) ◽  
pp. 61-70 ◽  
Author(s):  
E. P. Rets ◽  
R. G. Dzhamalov ◽  
M. B. Kireeva ◽  
N. L. Frolova ◽  
I. N. Durmanov ◽  
...  
Keyword(s):  
River Basin ◽  
Annual Runoff ◽  
Northern Caucasus ◽  
Mountainous Area ◽  
Positive Trend ◽  
North Caucasus ◽  
The North ◽  
Recent Climate ◽  
Instantaneous Discharge ◽  
Monthly Discharge

Based on observational data from 70 hydrological stations in the North Caucasus an evaluation of present values of mean annual runoff, minimum monthly winter and summer runoff was carried out. Series of maps was drawn. Significant changes in mean annual. minimum monthly and maximum runoff during last decades have been revealed in the North Caucasus. A rise in both amount of water availability and potential natural hazard is characteristic of the most of the North Caucasus that is considered to be caused by recent climate change. Mean annual runoff during 1978-2010 increased compared to 1945-1977 by 5-30 % in the foothills and by 30-70% in the plain area. An increase in winter minimum monthly runoff is as well most intensive in the plain part of study area (>100%). Within the foothills it amounts to 50-100%. In mountainous area long-term oscillation of winter minimum monthly discharge strongly depends on local factors, such as geological structure. The rate of the increase in summer minimum monthly discharge regularly grows from central foothill part of Northern Caucasus (30-50%) to the Western plain territory (70-100%). In Kuban river basin 30% of analyzed gauging stations show positive trend in maximum instantaneous discharge, while 9% negative. On the contrary, in the Eastern part – Terek river basin – negative trend in maximum instantaneous discharge is prevalent: 38% of gauging stations. Positive trend in Terek river basin is characteristic of 9.5% of analyzed gauging stations.

scholarly journals Climate vulnerability scenario of the agri-fishery communities in the Bicol River Basin, Philippines

2020 ◽  
Author(s):  
Ricky Laureta ◽  
Ric Ryan Regalado ◽  
Ermar De La Cruz
Keyword(s):  
Adaptive Capacity ◽  
River Basin ◽  
Ecological Model ◽  
Climate Scenario ◽  
Vulnerability Index ◽  
The Philippines ◽  
Agriculture Sector ◽  
The North ◽  
Projected Changes ◽  
Key Aspects

Abstract This paper investigated the vulnerability of the agriculture sector and rural agri-fishery livelihoods in the Bicol River Basin (BRB) in the Philippines to projected changes in climate. The geographical characteristics of the BRB features eight major sub-basins or watersheds consisting of Libmanan-Pulantuna, Ragay Hills, Thiris, Naga-Yabo, Pawili River, Waras-Lalo, Naporog, and Quinali. The study adopted the Climate Risk Vulnerability Assessment (CRVA) which employed geospatial modelling through the use of geographic information systems (GIS) data, briefly, a number of indicators which are presumed to affect vulnerability were used including exposure, sensitivity, and adaptive capacity which were aggregated to provide an index of vulnerability. These components were integrated and modelled using GIS by identifying exposure to natural hazards, assessing the sensitivity of major crops to climate variations using ecological model (MaxEnt) under high emission climate scenario (RCP8.5), and identifying key aspects of adaptive capacity. Additionally, we also analyzed the perception of stakeholders towards vulnerability using participatory approaches. This enabled us to identify areas of exposure and vulnerability, and pointed areas of greatest need for strengthened adaptive capacity and risk management. Our findings suggested that majority of the towns in the north and central portions of the BRB will largely experience increased vulnerability, particularly, in the Thiris sub-basin including some parts of Ragay Hills, Waras-Lalo and the northwestern Libmanan-Pulantuna sub-basins. On the contrary, the entire Quinali sub-basin in the south revealed to have the lowest vulnerability index. The information derived from the study can be utilized to reinforce local-based climate policies.

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