Earth's land surface teems with life. Although the distribution of ecosystems is largely explained by temperature and precipitation, vegetation can vary markedly with little variation in climate. Here we explore the role of bedrock in governing the distribution of forest cover across the Sierra Nevada Batholith, California. Our sites span a narrow range of elevations and thus a narrow range in ...

We compared the elemental composition of soil and bedrock samples to determine the extent of chemical weathering and the nature of the soil parent material in alpine soils on Vermont's highest summit. Previously it was unclear whether these soils formed through weathering of bedrock, glacial till, or eolian sediment, or solely through the accumulation of organic matter. In eighteen profiles, no...

[1] Abrasion by bed load is a ubiquitous and sometimes dominant erosional mechanism for fluvial incision into bedrock. Here we develop a model for bedrock abrasion by saltating bed load wherein the wear rate depends linearly on the flux of impact kinetic energy normal to the bed and on the fraction of the bed that is not armored by transient deposits of alluvium. We assume that the extent of al...

C. Beaumont, J. Marly, J. Protais, M. Protais, H. Chapuis, J. Trotereau, N. Sellier P. Velge et G. Salvat. Institut National de la Recherche Agronomique, Département de Génétique Animale, Station de Recherche Avicole, Nouzilly, France Institut National de la Recherche Agronomique, Département Microbiologie et Chaîne Alimentaire, Unité Pathologie Infectieuse et Immunologie, Nouzilly, France Agen...

Fulvio A. Scorza, Elza M. Yacubian, Lineu Calderazzo, Carla A. Scorza, Marly de Albuquerque, Esper A. Cavalheiro I Universidade Federal de São Paulo/Escola Paulista de Medicina (UNIFESP/EPM), Disciplina de Neurologia Experimental, São Paulo/SP, Brasil. II Universidade Federal de São Paulo/Escola Paulista de Medicina (UNIFESP/EPM). Departamento de Neurologia e Neurocirurgia, Unidade de Pesquisa ...

Abstract The Hakodate Plain in the southern part of Oshima Peninsula, Hokkaido, Japan, is a sedimentary basin surrounded by mountains. vertical displacements caused active faults along western margin increased depth Plain. Small-to-large-sized microtremor array surveys were conducted at five sites to estimate S-wave velocity structure down seismic bedrock for each site develop detailed model. A...

1Infectious Diseases Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran 2Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran *Corresponding author: Seyed Hossein Shahcheraghi, Infectious Diseases Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran, Tel: + 98-9132531389; E-mail...

1Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, IR Iran 2Department of Epidemiology and Biostatistics, School of Public Health, International Campus, Tehran University of Medical Sciences, Tehran, IR Iran 3Department of Optometry, Mashhad University of Medical Sciences, Mashhad, IR Iran 4Department of Epidemiology, Faculty of Public Health, Shahid Beheshti University of Medical ...