Teff [Eragrostis tef (Zucc.) Trotter] is a relatively new forage crop that is attracting much interest among hay growers in the United States and Utah (Creech, et al., 2012). Teff plants have fine stems, shallow roots and are not frost tolerant. This annual, warm-season grass grows best during the hottest months of the year when cool-season grasses suffer their “summer slump.” Since Teff does n...

The Arctic halocline stratification is an important barrier to the transport of deep ocean heat to the underside of sea ice. Surface water in the Chukchi Sea, warmed in summer by solar radiation, ventilates the Canada Basin halocline to create a warm layer below the mixed-layer base. The year-round persistence of this layer is shown to be consistent with the seasonal cycle of halocline ventilat...

The impact of climate change on many different ecosystems is a growing concern. Intertidal filter feeders, such as barnacles, play an important role in repairing the water quality and contributing to the stability of the ecosystem. This experiment aimed to look at the effect of different aerial exposure temperatures on Balanus balanoides feeding behaviors. Barnacles were exposed to 4°C, 12°C, a...

Archaeological, geological, historical, tree-ring and instrumental data indicate that the last 10 000 years were characterized in China by climatic variations at various temporal and spatial scales. The period from 10 000 to 9000 BP was one of increasing temperature. The Holocene ’Optimal Period’ occurred approximately between 9000 and 3000 BP, within which there were two major cool episodes ar...

We investigate the importance of the far red wing of the Lyman α line of hydrogen in the atmospheres of cool white dwarfs of pure hydrogen composition. We find that this absorption process dominates all important sources of opacity in the blue part of the optical spectrum of these stars. Our successful fits to the spectra of cool DA/DC white dwarfs indicate that the far red wing of the Ly α lin...