scholarly journals The Bryophyte Flora of Kümbet High Plateau (Dereli district, Turkey)

2021 ◽  
Author(s):  
Hüseyin ERATA ◽  
Nevzat BATAN ◽  
Mevlüt ALATAŞ
Keyword(s):  
High Plateau

Impacts of anthropogenic pressure on the degradation of the forest of Doui Thabet (Saida, Western Algeria) in the context of the restoration

2020 ◽  
Vol 7 (2) ◽  
pp. 88-97
Author(s):  
Aouadj Sid Ahmed ◽  
Nasrallah Yahia ◽  
Hasnaoui Okkacha ◽  
Khatir Hadj
Keyword(s):  
Limiting Factor ◽  
Global Changes ◽  
Anthropogenic Pressure ◽  
Qualitative And Quantitative ◽  
Pressure Index ◽  
High Plateau ◽  
The Face ◽  
Western Algeria ◽  
Restoration Strategies ◽  
Very High

AbstractThe forest of Doui Thabet is one of the forests of the Mounts of Saida (Western Algeria) which is experiencing a dynamic regressive. Located in the semi-arid bioclimatic stage, it is located at the edge of two phytogeographic sub-sectors: atlas Tellien Oranais (O3) and high plateau subsector (H1). Among the factors that threaten to curb this fragile and weakened ecosystem, in addition to drought and climate aridity and which has become a structural ecological phenomenon; the overgrazing is also a major limiting factor. This current study provides a qualitative and quantitative assessment of anthropogenic pressure exerted in this area zone. The methodology adopted in this study is that of Le Houerou (1969) and Montoya (1983), which it is based on the calculation of the annual needs of the herd in forage units, the estimate of the feed potential of production, the coefficient of overgrazing and in addition to the anthropogenic pressure index. The result of the forage balance in the forest rangelands of the studied area has a forage deficit (overload) of (96.64%) (a sylvopastoral imbalance), in addition to that, the coefficient of overgrazing is (92.3%) and the anthropogenic pressure index is very high (28). The conservation and the restoration of this area is a major concern in the face of global changes, taking into account their mode of reproduction and their dynamics, for the development of restoration strategies and more effective ways of protection.

Qaanaaq 2001: mineral exploration reconnaissance in North-West Greenland

2002 ◽  
pp. 133-143
Author(s):  
Bjørn Thomassen ◽  
Peter R. Dawes ◽  
Agnete Steenfelt ◽  
Johan Ditlev Krebs
Keyword(s):  
Mineral Exploration ◽  
Mining Industry ◽  
Field Work ◽  
Original Series ◽  
West Greenland ◽  
North West ◽  
Ice Caps ◽  
High Plateau ◽  
Set Up ◽  
Inland Ice

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Thomassen, B., Dawes, P. R., Steenfelt, A., & Krebs, J. D. (2002). Qaanaaq 2001: mineral exploration reconnaissance in North-West Greenland. Geology of Greenland Survey Bulletin, 191, 133-143. https://doi.org/10.34194/ggub.v191.5141 _______________ Project Qaanaaq 2001, involving one season’s field work, was set up to investigate the mineral occurrences and potential of North-West Greenland between Olrik Fjord and Kap Alexander (77°10´N – 78°10´N; Fig. 1). Organised by the Geological Survey of Denmark and Greenland (GEUS) and the Bureau of Minerals and Petroleum (BMP), Government of Greenland, the project is mainly funded by the latter and has the overall goal of attracting the interest of the mining industry to the region. The investigated region – herein referred to as the Qaanaaq region – comprises 4300 km2 of ice-free land centred on Qaanaaq, the administrative capital of Qaanaap (Thule) municipality. Much of the region is characterised by a 500–800 m high plateau capped by local ice caps and intersected by fjords and glaciers. High dissected terrain occurs in Northumberland Ø and in the hinterland of Prudhoe Land where nunataks are common along the margin of the Inland Ice.

Ghazal of The High Plateau

2003 ◽  
pp. 20-21
Author(s):  
David Cope
Keyword(s):  
High Plateau

scholarly journals Algunos aspectos ecológicos y fitogeográficos de las especies de Cyperaceae en el Valle de México. II. Análisis fitogeográfico

2017 ◽  
pp. 29
Author(s):  
Socorro González-E. ◽  
J. Rzedowski
Keyword(s):  
Regional Scale ◽  
Generic Level ◽  
High Plateau ◽  
General Terms ◽  
The Family

The analysis of the geographic affinities of the members of Cyperaceae belonging to the flora of the V alley of Mexico reveals that, in general terms, neotropical relationships prevail amply over the holarctic ones that were detected, while species with distribution restricted to Mexico amount to about 30% of the total number. With countries as distant as Poland and Liberia there are few species in common, although at the generic level, the similarity exceeds 50%. On a more regional scale, the cyperaceous flora of the Valley shows evident links with that of the Mexican High Plateau, but has relatively little in common with the flora of warmer parts of the country. The results support the idea of Raven and Axelrod, who claim that the family evolved initially in tropical and subtropical areas and later migrated northward and southward.

scholarly journals Palaeogeography and palaeoenvironments of northern Patagonia from the Late Cretaceous to the Miocene: the Palaeogene Andean gap and the rise of the North Patagonian High Plateau

2011 ◽  
Vol 103 (2) ◽  
pp. 305-315 ◽  
Author(s):  
EUGENIO ARAGÓN ◽  
FRANCISCO J. GOIN ◽  
YOLANDA E. AGUILERA ◽  
MICHAEL O. WOODBURNE ◽  
ALFREDO A. CARLINI ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
High Plateau ◽  
Northern Patagonia ◽  
The North
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