It is vital to understand responses of soil microorganisms to predicted climate changes, as these directly control soil carbon (C) dynamics. The rate of turnover of soil organic carbon is mediated by soil microorganisms whose activity may be affected by climate change. After one year of multifactorial climate change treatments, at an undisturbed temperate heathland, soil microbial community dyn...

Abstract Providing protein to growing puppies in accurate amounts ensures that animals have enough energy and nutrients for depositing muscle, bones, maintaining joint health. Inclusion must be provided at correct doses, considering a diet with excess can lead harmful outcomes such as hyperkalemia or acidosis. To determine the requirements Labrador Retrievers, indicator amino acid oxidation (IA...

Abstract. Triple oxygen isotopes (17O-excess) of water are useful to trace evaporation at the soil–plant–atmosphere interface. The 17O-excess plant silica, i.e., phytoliths, inherited from leaf water, was previously calibrated in growth chambers as a proxy atmospheric relative humidity (RH). Here, using model–data approach, we examine parameters that control triple isotope composition bulk gras...

Microbial Carbon Sources on the Shelf and Slope of the Northwestern Gulf of Mexico. (August 2005) Carlton David Rauschenberg, B.S., DePaul University Chair of Advisory Committee: Dr. Luis A. Cifuentes Over the past five years, gas chromatography/combustion/isotope ratio mass spectrometry (GC/C/IRMS) analyses of phospholipid fatty acids (PLFAs) has been increasingly used to link organic matter (...

The Athlete Biological Passport (ABP) is an individual electronic document that collects data regarding a specific athlete that is useful in differentiating between natural physiologic variations of selected biomarkers and deviations caused by artificial manipulations. A subsidiary of the endocrine module of the ABP, that which here is called Athlete Steroidal Passport (ASP), collects data on m...