The purpose of the study was to investigate determinants of acute mountain sickness after rapid ascent to high altitude. A total of 21 climbers were studied ascending from <1,200 m to Capanna Regina Margherita, a hut in the Alps at 4,559 m, within <24 h. During their overnight stay at 4,559 m, breathing patterns and ventilation were recorded by calibrated respiratory inductive plethysmography a...

Rice (Oryza sativa) is a key staple in Tanzania but its productivity is affected by disease infestation, primary among which is the rice yellow mottle virus (RYMV). Tanzania possesses high RYMV densities and several locations including the Eastern Arc Mountains provide suitable habitat fragmentation that facilitates the diversification process of the virus. However, the distribution pattern and...

Rapid ascent to high altitude commonly results in acute mountain sickness, and on occasion potentially fatal high-altitude cerebral edema. The exact pathophysiological mechanisms behind these syndromes remain to be determined. We report a study in which 12 subjects were exposed to a FiO2 = 0.12 for 22 h and underwent serial magnetic resonance imaging sequences to enable measurement of middle ce...

The Advanced Land Observing Satellite (ALOS) is relatively new. Its optical sensors are capable of making high-resolution digital surface models (DSMs). For the first time, the task of constructing a regional-scale inventory of glacial lakes based on ALOS data has been undertaken. This study presents the data-processing methods and the results of validation and analysis on the ALOS-based glacia...

High-mountain lakes are unique ecosystems with very few examples at tropical latitudes for experimentation. A two-year, high-frequency meteorological and water-column dataset from the crater of Nevado de Toluca volcano, in Mexico, an altitude about 4200 m above sea level, allowed study temporal changes thermal structure, water balance Lakes El Sol La Luna, separated by 500 a lava dome. Annual f...

[1] We investigate spatio-temporal relationships between soil CO2 flux (FCO2), meteorological variables, and topography over a ten-day period (09/12/2006 to 09/21/ 2006) at the Horseshoe Lake tree kill, Mammoth Mountain, CA. Total CO2 discharge varied from 16 to 52 t d !1, suggesting a decline in CO2 emissions over decadal timescales. We observed systematic changes in FCO2 in space and time in ...