نتایج جستجو برای: highlands

تعداد نتایج: 4570  

Journal: :The Geographical Journal 1901

2012
Belay Simane Benjamin F. Zaitchik Desalegn Mesfin

Ethiopia has become warmer over the past century and human induced climate change will bring further warming over the next century at unprecedented rates. On the average, climate models show a tendency for higher mean annual rainfall and for wetter conditions, in particular during October, November and December, but there is much uncertainty about the future amount, distribution, timing and int...

2011
Kristofer M. Helgen William H. Thomas

We undertook a survey of mammal diversity and indigenous knowledge of mammals in Hewa country, in the vicinity of Wanakipa village, Southern Highlands Province, during July 2008. Specimens collected during this survey document the occurrence of 22 mammal species in the immediate area, including one monotreme, 6 marsupials, 7 rodents, and 8 bats. Two species of conservation concern, the Eastern ...

2017
Pawel Wasowicz

6 The highlands and mountains of Iceland (defined here as areas located above 400 m a.s.l) are one of the largest remaining wilderness areas in Europe. The present study was aimed to provide the first comprehensive and up-to-date data on non-native plant species from these areas. The study was aimed to answer the following questions: (1) How many non-native vascular plant species inhabit highla...

Journal: :Molecular phylogenetics and evolution 2006
Rauri C K Bowie Jon Fjeldså Shannon J Hackett John M Bates Timothy M Crowe

Although many studies have documented the effect of glaciation on the evolutionary history of Northern Hemisphere flora and fauna, this study is the first to investigate how the indirect aridification of Africa caused by global cooling in response to glacial cycles at higher latitudes has influenced the evolutionary history of an African montane bird. Mitochondrial DNA sequences from the NADH 3...

2003
Thomas R. Watters

[1] Mars Orbiter Laser Altimetry (MOLA) data have been used to characterize lobate scarps along the dichotomy boundary in the eastern hemisphere of Mars. These structures are the surface expression of thrust faulting of the southern highlands. Displacement on the thrust faults is generally less than 1 km except in the case of the Amenthes Rupes thrust fault, where the maximum displacement is on...

2011
M. A. Rosenburg O. Aharonson J. W. Head M. A. Kreslavsky E. Mazarico G. A. Neumann D. E. Smith M. H. Torrence M. T. Zuber

[1] The acquisition of new global elevation data from the Lunar Orbiter Laser Altimeter, carried on the Lunar Reconnaissance Orbiter, permits quantification of the surface roughness properties of the Moon at unprecedented scales and resolution. We map lunar surface roughness using a range of parameters: median absolute slope, both directional (along‐track) and bidirectional (in two dimensions);...

2009
K. L. Robinson A. H. Treiman

Lunar highland meteorites contain small proportions of mare basalt fragments, which are important for defining lunar basalts in areas not visited by Apollo/Luna. We analyzed seven mare basalt fragments from three highland meteorites, and retrieved the Ti contents of their parent magmas from core pyroxene compositions. The analyzed clasts span the range of VLT and low-Ti, basalts in Apollo & Lun...

2015
Elijah Njuguna Mary Gathara Stanley Nadir Sizah Mwalusepo David Williamson Pierre-Etienne Mathé Jackson Kimani Tobias Landmann Gerald Juma George Ong’amo Erastus Gatebe Bruno Le Ru Paul-andré Calatayud

Maize is the main staple crop in the East African Mountains. Understanding how the edaphic characteristics change along altitudinal gradients is important for maximizing maize production in East African Highlands, which are the key maize production areas in the region. This study evaluated and compared the levels of some macro and micro-elements (Al, Ca, Fe, K, Mg, Mn, Na and P) and other soil ...

Journal: :BMC Infectious Diseases 2008
Daibin Zhong Yaw Afrane Andrew Githeko Liwang Cui David M Menge Guiyun Yan

BACKGROUND Since the late 1980s a series of malaria epidemics has occurred in western Kenya highlands. Among the possible factors that may contribute to the highland malaria epidemics, parasite resistance to antimalarials has not been well investigated. METHODS Using parasites from highland and lowland areas of western Kenya, we examined key mutations associated with Plasmodium falciparum res...

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