During July and August 2004, we used the seawater dilution technique to investigate relationships stratified. Compared with previous observations in the subarctic Pacific and Bering Sea, mixed-layer phytoplankton growth rates were typical (average 0.35d ) while microzooplankton grazing rates were low (average 0.13 d ). Phytoplankton growth rates were strongly nutrient-limited, increasing to an ...

The regular echinoid Eucidaris thouarsii is a conspicuous omnivore on coral bottoms in the Galápagos. Unlike Eucidaris in Panama and mainland Ecuador, Galápagos Eucidaris are large and abundant and graze heavily in the open on live corals day and night. These differences are probably due in large part to more intense predation by fishes on mainland compared with island urchin populations. An as...

The scattering of photons in plasmas is an important diagnostic tool. The region of warm dense matter can be probed by x-ray Thomson scattering. This requires intense x-ray sources, such as the free electron laser (FEL) at DESY Hamburg. We improve the standard treatment of the scattering on free electrons within the random phase approximation (RPA) by including collisions. The dynamic collision...

N-propylsalicylidene based on silica as ion exchanger (IE) was used for the separation by complexation of Mn2+, Co2+, Ni2+, Cu2+, Hg2+, Cr3+, Fe3+, and UO22+ from their parent solutions. IE and its metal complexes are characterized by elemental analysis, electronic and infrared spectra, in addition to thermal analysis in atmospheric pressure. The mode of chelation and the proposed geometric str...

Selective grazing of burned patches can be intense if animal distribution is not controlled and may compound the independent effects of fire and grazing on soil characteristics. Our objectives were to quantify the effects of patch burning and grazing on wind erosion, soil water content, and soil temperature in sand sagebrush (Artemisia filifolia Torr.) mixed prairie. We selected 24, 4-ha plots ...

Abstract Background Infective endocarditis is a challenging diagnosis that usually requires cardiovascular image confirmation as part of the approach. 18F-FDG PET/CT an imaging technique more sensible for prosthetic valve when echocardiography inconclusive. Case Summary We present case 35-year-old man who had previous Bentall-De Bono procedure four years prior included biological, INC-type, loc...

Alnus viridis is a pioneer species that has expanded in Central Europe the last decades, causing series of negative agro-environmental impacts. Robust livestock grazing could be used as targeted tool to reduce its encroachment, but more information needed find best approach achieve this goal. In study, we assessed potential molasses-based blocks (MB) lure Highland cattle into A. -encroached are...

Activities associated with agriculture, grazing, and the energy industry have altered large tracts of native rangeland in North America. Pipelining causes intense local disturbance by removal vegetation alterations to soil horizons. Following a disturbance, reclamation is required return land equivalent capability. Revegetation usually seeding and/or agronomic (non-native, dominant) species. Th...