Problems and prospects in the preservation of Late Pleistocene cultural sites in southern Oregon coastal river valleys: Implications for evaluating coastal migration routes

2006 ◽  
Vol 21 (4) ◽  
pp. 333-350 ◽  
Author(s):  
Michele L. Punke ◽  
Loren G. Davis
Keyword(s):  
Late Pleistocene ◽  
Migration Routes ◽  
Cultural Sites ◽  
River Valleys ◽  
Coastal River

scholarly journals Pleistocene horses (genus Equus) in the central Balkans

2003 ◽  
pp. 55-75 ◽  
Author(s):  
Ann Forsten ◽  
Vesna Dimitrijevic
Keyword(s):  
Late Pleistocene ◽  
River Valley ◽  
Middle Pleistocene ◽  
Mountainous Area ◽  
Migration Routes ◽  
Northern Greece ◽  
The North ◽  
Time Period ◽  
Morava River ◽  
River Valleys

A review of the fossil horses of the genus Equus from the central Balkans, a mountainous area comprising Serbia and Montenegro, is presented in this paper. The time period covered by the finds is from the late Early to and including the Late Pleistocene, but the record is not complete: the dated finds are Late Pleistocene in age, while Early and Middle Pleistocene are poorly represented. The horses found resemble those from neighbouring countries from the same time period, probably showing the importance of river valleys as migration routes. The Morava River valley runs in a roughly south-to-north direction, connecting, via the Danube and Tisa River valleys the Hungarian Pannonian Plain in the north with northern Greece in the south, via the Vardar River valley in Macedonia. In Pleistocene, large mammals, including horses, probably used this route for dispersal.

A Process-Based View of Floodplain Forest Patterns in Coastal River Valleys of the Pacific Northwest

Ecosystems ◽  
2009 ◽  
Vol 13 (1) ◽  
pp. 1-31 ◽  
Author(s):  
Robert J. Naiman ◽  
J. Scott Bechtold ◽  
Timothy J. Beechie ◽  
Joshua J. Latterell ◽  
Robert Van Pelt
Keyword(s):  
Pacific Northwest ◽  
Floodplain Forest ◽  
The Pacific ◽  
River Valleys ◽  
Coastal River

scholarly journals Some regularities in the distribution of kenophytes in the Polish Carpathians and their foreland

2015 ◽  
Vol 37 (1) ◽  
pp. 11-20 ◽  
Author(s):  
Maria Zając ◽  
Adam Zając
Keyword(s):  
Invasive Species ◽  
Migration Routes ◽  
Forest Zone ◽  
Mountain Ranges ◽  
The Carpathians ◽  
Number Of Species ◽  
Rivers And Streams ◽  
Polish Carpathians ◽  
River Valleys

Abstract The Polish Carpathians and their northern foreland are a rewarding object for the kenophyte distribution research. The study, using the cartogram method, showed that the number of kenophyte species decreases with increasing altitude. Only few kenophytes were found in the lower forest zone. This regularity concerns also the species that reach higher altitudes in the mountains of their native lands. A number of species migrated into the Carpathians through rivers and streams. River valleys generate many open habitats, which are easily colonized by kenophytes due to the lack of competition. In the Carpathians, towns used to be founded in the mountain valleys and this was also a favouring factor of kenophyte propagation. The arrangement of mountain ranges in the Polish Carpathians, including their foreland, hindered the migration of some species and allowed to discover the possible migration routes into the area covered by research. Tracing these migration routes was possible only for those species that have not occupied the whole available area yet. Additionally, the study indicated the most dangerous invasive species in the Polish Carpathians and their foreland.

Palaeoclimatic and palaeoenvironmental implications of late-Pleistocene aeolian sand in the Jin-Shaan Gorges of the Yellow River valley revealed by luminescence chronology

The Holocene ◽  
2019 ◽  
Vol 29 (6) ◽  
pp. 964-974
Author(s):  
Yuzhu Zhang ◽  
Chun Chang Huang ◽  
Zhihai Tan ◽  
Haijun Qiu ◽  
Yinglu Chen ◽  
...  
Keyword(s):  
Late Pleistocene ◽  
Yellow River ◽  
River Valley ◽  
Sediment Supply ◽  
The Yellow River ◽  
Strong Wind ◽  
Aeolian Sand ◽  
Yellow River Valley ◽  
River Valleys ◽  
Semi Arid

River valleys are critical water-gas-rock interactions zone, where close interaction between fluvial and aeolian deposition are a pronounced feature in arid, semi-arid, and semi-humid environments. Pedo-sedimentological investigations were carried out in the Jin-Shaan Gorges of the Yellow River valley. Two late-Pleistocene and Holocene aeolian sand-loess profiles were identified within the cliff riverbank. The aim of this study is to reveal the palaeoclimatic conditions and driving factors for the formation of palaeo-aeolian sand in the Jin-Shaan Gorges of the Yellow River valley. Five samples were taken from the aeolian sand-loess profiles for optically stimulated luminescence (OSL) dating. The OSL ages are in stratigraphic order and range from 12.8 ± 0.7 ka to 11.8 ± 1.0 ka. By combining OSL ages with additional stratigraphic correlations, the deposition period of the palaeo-aeolian sand is dated to 12.5–11.8 ka, which would place it at the Younger Dryas (YD) time interval that punctuated the last glacial-Holocene transition period. The formation of palaeo-aeolian sand in the region was due to sufficient sediment supply from the riverbed sand of the Yellow River, strong East Asian winter monsoon, and strong wind erosion. These results give insights into the palaeoclimatic and palaeoenvironmental conditions for the formation of aeolian sand associated with the river valleys in semi-arid and sub-humid regions.

scholarly journals Communities of the Bidentetea class of small coastal river valleys of the Western Pomerania (Poland)

2020 ◽  
Vol 28 ◽  
pp. 8-19
Author(s):  
Edyta Stępień ◽  
Stanisław Rosadziński
Keyword(s):  
Plant Communities ◽  
Riparian Vegetation ◽  
Group Method ◽  
Middle Section ◽  
Pair Group ◽  
Synanthropic Species ◽  
Community Belonging ◽  
Polygonum Minus ◽  
River Valleys ◽  
Coastal River

The aim of work was to investigate the diversification, structure, physiognomy and floristic richness of riverside terophytes from Bidentetea tripartitae class in selected coastal river valleys. The investigates area encompassed the lower and middle section of the river valleys of Rega, Parsęta, Wieprza, Słupia, Łupawa  in the Western Pomerania (Poland). 68 phytosociological records were made according to the system of Braun-Blanquet. A database was created with the help of the software Turboveg for Windows.The hierarchy classification with the MVSP package was used in order to arrange and group the collected phytosociological data and to single out the types of plant communities. In order to evaluate similarity of samples with respect to species composition the Bray Curtis was calculated and the Unweighted Pair Group Method with Arithmetic Mean (UPGMA) was applied. Three plant communities belonging to one alliance Bidention tripartitae were identified: Bidenti-Polygonetum hydropiperis (Miljan 1933) Lohmeyer in R.Tx. 1950 nom invers., Bidentetum cernui Kobendza 1948, community with Polygonum minus, and one plant community belonging to the alliance Chenopodion glauci: Chenopodietum rubri Timar 1947.Given the natural origin of most of the patches, their structure, and the relatively small share of synanthropic species, including alien species, it should be emphasized that they constitute a spontaneous stage of succession of riparian vegetation. The presence of therophyte communities in the valleys of the coastal rivers, as well as their structure and physiognomy, testify to the preservation of their natural character.

scholarly journals Correlation of the river valleys terraces of the Volhynian Upland based on morphological and lithological features

2015 ◽  
pp. 253-265
Author(s):  
Taras Novak
Keyword(s):  
Late Pleistocene ◽  
Early Pleistocene ◽  
Middle Pleistocene ◽  
Local Distribution ◽  
Small Thickness ◽  
High Rise ◽  
The Third ◽  
Sandy Material ◽  
River Valleys ◽  
High Degree

River valleys of Volhynian Upland are characterized by a larger number of terraces and a greater depth of their downcutting compared with neighbouring Polissia and Male Polissia. We established that the major rivers of Volhynian Upland have floodplain and mostly three terraces. The valley of the Horyn River is different from others by presence of fourth terrace. According to received information, the age of forming of the highest terrace (revealed only in the Horyn Valley) can be considered as Early Pleistocene, the third terrace – Middle Pleistocene, and the two lowest terraces – Late Pleistocene. Relief of the Early and Middle Pleistocene terraces is characterized by high degree of dissection and presence of sufficiently thick loess cover. At higher Late Pleistocene terrace loess cover isn’t revealed everywhere and has a small thickness (typically up to 5 m). The lowest terrace in most valleys has local distribution and it is composed mainly of sandy material. The surface of this terrace is located on several hypsometric levels. Floodplain usually has two high-rise levels. It formed in the Holocene. Key words: river valley, terrace, floodplain, Volhynian Upland, Horyn River, Styr River, Zakhidnyi Buh River.

Sign in / Sign up

Export Citation Format

Share Document