Landscape-driven processes impact the magnitude and direction of cross-ecosystem resource subsidies, but they may also control consumers' numerical and functional responses by altering habitat availability. We investigated effects of the interaction between habitat availability and subsidy level on populations of a riparian fishing spider, Dolomedes aquaticus, using a flood disturbance gradient...

The earliest bioeroded inorganic hard substrates in the Ordovician of Estonia appear in the Dapingian. Hardgrounds are also known from the Sandbian and Katian. Most of the bioerosion of inorganic hard substrates occurs as the boring Trypanites Mägdefrau, 1932 along with some possible Gastrochaenolites borings. North American hardground borings are more diverse than those in Baltica. In contrast...

Paleovalleys are components of regional unconformities that provide important constraints on the tectonic evolution of orogenic systems. Some paleovalleys represent canyons cut through deformed strata. Others comprise linear rift-valleys filled with lakes, streams, or alluvium. Locally preserved fluvial and alluvial gravel may directly link source regions to depositional basins, providing timel...

A three-dimensional numerical model is used to compute the water flow field in a straight flume with a cobble bed. The geometry of the numerical model is a replication of a physical model experiment where the largest cobbles were approximately 10 cm long. Detailed information on the digital terrain model of the bed was available from a laser scan of the bed. In the experiments, flow velocity pr...

Abstract This study describes the traditional seed system for maintaining crop vigour through selection, storage and exchange practices by local farmers inhabiting Shivalik-Bhabar tracts of western Himalaya in Una district Himachal Pradesh state, India. The area falls sub-tropical zone where arable land is heavily laden with cobbles pebbles. Three villages, namely, Baliwal, Pubowal Janani, were...

Knowledge on interactions among microbial communities colonizing various streambed substrata (e.g. cobbles, sediment, leaf-litter etc.) is essential when investigating the functioning of stream ecosystems. However, these are often forgotten assessing responses aquatic to chemical contamination. Using a microcosm approach, respective impact two sulfonamide antibiotics (sulfamethoxazole and sulfa...

Abstract Hard rock blocks embedded in a soft matrix can be found many geological units. When tunneling these heterogeneous formations, technical problems caused by the presence of cobbles and boulders. These risks depend on excavation method selected, typically increase as block content, dimension frequency increase. Therefore, successful projects require cobble-boulder properties to accurately...

objective: preterm infants are prone to intraventricular hemorrhage. they may suffer from significant morbidity and mortality particularly in those with high-grade hemorrhage. our objective was to determine the incidence of intraventricular hemorrhage in premature infants transported to a tertiary center compared with those delivered at the level iii facility.  methods: we evaluated all prematu...

the objective of this study was to review the literature on sperm transport in the mare. during this process the sperm cells must reach the oviducts in order to fertilize the oocyte, but before reaching this site it must go through the uterus that is a hostile environment at this moment since there is an inflammatory reaction in this location that aims to eliminate excess spermatozoa and bacter...

– One of the important applications of robots is in material handling and transport of various shaped objects. In cases where an object cannot be directly grasped by the robot gripper, and must be carried by a hook, it may be subject to undesirable swings during transport. This paper presents an analytical method for minimizing the oscillation of a suspended object during transport. This method...