[1] Permafrost melting is occurring in areas of the boreal forest region where large amounts of carbon (C) are stored in organic soils. We measured soil respiration, net CO2 flux, and net CH4 flux during May–September 2003 and March 2004 in a black spruce lowland in interior Alaska to better understand how permafrost thaw in poorly drained landscapes affects land-atmosphere CO2 and CH4 exchange...

Oceanic depth profiles of plankton respiration are described by a power function, RCO2 = (RCO2 )0(z/z0) , similar to the vertical carbon flux profile. Furthermore, because both ocean processes are closely related, conceptually and mathematically, each can be calculated from the other. The exponent b, always negative, defines the maximum curvature of the respiration–depth profile and controls th...

Oceanic depth profiles of plankton respiration are described by a power function, RCO2 = (RCO2 )0 (z/z0) b similar to the vertical carbon flux profile. Furthermore, because both ocean processes are closely related, conceptually and mathematically, each can be calculated from the other. The exponent, b, always negative, defines the maximum curvature of the respiration depth-profile and controls ...

The effect of climate change on peatlands is great importance due to their large carbon stocks. In this study, we examined microbial biomass and temperature O2 availability soil respiration surface subsurface Sphagnum peat. interactive biotic abiotic factors significantly affects respiration. Increasing enhanced the respiratory activity thus respiration, while there a threshold. more decomposed...

INTRODUCTION Physiological fluctuations due to respiration are the dominant source of confounding variability in BOLD fMRI at high fields [1-4]. Short-term respiration effects result from B0 modulation due to bulk susceptibility changes from thoracic organ movement and gas volume as well as head motion [3-5]. Recently low-frequency fluctuations in the depth and the rate of respiration have been...

mitochondrial respiration is a complex process which its biochemistry is often poorly understood by undergraduate students when explained in toxicology lectures. the use of experiments to reinforce their knowledge is important, but not always possible because of low teaching budgets. therefore, a low cost model, made using water, oil, styrofoam and modeling clay, is presented here to simulate t...

Carbon dioxide efflux and soil microenvironmental factors were measured diurnally in Carex aquatilusand Eriophorum angustifolium-dominated riparian tundra communities to determine the relative importance of soil environmental factors controlling ecosystem carbon dioxide exchange with the atmosphere. Measurements were made weekly between 18 June and 24 July 1990. Diurnal patterns in carbon dioxi...