12265 to 12276 of 14026 results
Diatom cells have distinctive optical characteristics, originating from their relatively large cell size, fucoxanthin content and silica cell wall. It has been proposed that diatom-dominated phytoplankton blooms can be identified […]
P>Dark septate endophytes (DSE) frequently colonize roots in the natural environment, but the effects of these fungi on plants are obscure, with previous studies indicating negative, neutral or positive effects […]
We report on three GPS records of flow of the Larsen C Ice Shelf, spanning 2 months to 2 years. Variations in speed are evident at periods from a few […]
Understanding the dynamics of the Earth’s radiation belts is important for modeling and forecasting the intensities of energetic electrons in space. Wave diffusion processes are known to be responsible for […]
The temporal evolution of the phase space density of plasma sheet electrons (100 eV-30 keV) injected into the nightside at L = 6 during moderate geomagnetic activity is investigated using […]
Using the statistical wave power spectral profiles obtained from CRRES wave data within the 0000–0600 MLT sector under different levels of geomagnetic activity and a modeled latitudinal variation of wave […]
Using statistical wave power spectral profiles obtained from CRRES and the latitudinal distributions of wave propagation modeled by the HOTRAY code, a quantitative analysis has been performed on the scattering […]
A suite of 10 autonomous ozone monitoring units, each powered using renewable energy, was developed and built to study surface ozone in Antarctica during the International Polar Year (2007-2009). The […]
The Antarctic intertidal zone is one of the world’s most extreme marine environments. As well as having a typically high annual temperature variation (~ 30 °C), it is affected by […]
The human-assisted establishment of two non-native predatory carabid beetles (Merizodus soledadinus (Guerin-M,n,ville), Trechisibus antarcticus (Dejean)) on the sub-Antarctic island of South Georgia occurred 30-50 years ago, but the distribution of […]
It has long been maintained that the majority of terrestrial Antarctic species are relatively recent, post last glacial maximum, arrivals with perhaps a few microbial or protozoan taxa being substantially […]
The process of organismal freezing in the Antarctic limpet, Nacelle concinna, is complicated by molluscan biology. Internal ice formation is, in particular, mediated by two factors: (a) the provision of […]