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Abstract

Bowseria arctowskii gen. et sp. nov., a new organic-walled monothalamous (single-chamber) foraminiferan is described from samples collected in Admiralty Bay (King George Island, West Antarctica) at 100- 200 m water-depth (mwd). The species is characterized by a large (1- 2 mm) elongate theca with a single terminal aperture. Molecular phylogenetic analyses, based on partial small subunit rDNA sequences, indicate that the new species belong to a clade of single-chambered foraminifers that branch as a sister group to the multi-chambered textulariids and rotaliids. The most closely related to the new species is an undetermined allogromiid from under the Ross Ice Shelf.
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Abstract

The objective of this research is to determine the impact of waves on the segregation of sediment within the area of its supply in the context of meteorological conditions. The research was conducted on a 4 km section of the shore of Calypsostranda (Bellsund, West Spitsbergen), shaped by waves such as swell, wind waves, and tides. Particular attention was paid to the diversity and variability of the surface texture within the intertidal zone. Meteorological measurements, recording of wave climate, as well as analysis of the grain-size distribution of the beach sediments were performed. Nearshore bathymetry, longshore drifts, episodic sediment delivery from land, as well as resistance of the shore to coastal erosion and direction of transport of sediments in the shore zone are important factors controlling shore development. Data show that wind waves contribute to erosion and discharge of material from the nearshore and intertidal zone. The research also shows that oceanic swell, altered by diffraction, reaching the shore of Calypsostranda contributes to better sorting of sediment deposited on the shore through washing it out from among gravels, and longshore transport of its finest fraction. The grain size distribution of shore sediments is significantly changed already during one tidal cycle. The degree of this modification depends not only on wave height and period but on the direction of wave impact. The shore of Calypsostranda can be regarded as transitional between high and low energy coasts.
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Abstract

Transport and Space in Socio-Economic Life. This paper deals with key issues arising when transport is confronted with chaotic socio-economic environments. Nowadays especially urbanised areas are facing some crucial issues concerning urban planning under conditions of spatial chaos. Transport, having an important role in connecting the space of social and economic life, is a mean to reduce spatial chaos but is also subjected to the impacts chaotic socio-economic forces have. Within this research the interrelation between transport and disordered environment in which transport has to operate is addressed in regard to: transport infrastructure investment planning, traffic congestion management, transport accessibility, accidents and transport safety and impact of transport on the environment. It is the expected role of transport system to reduce chaos, especially in urban areas. But to what degree transport is actually fulfilling this task? In fact in many places badly organized transport might add to the problem instead of solving it. The effect the chaotic spatial organisation has on transport accessibility influences daily economic and social activity of people. Specifically there are numerous cost drivers activated by chaotic transport development resulting mainly in higher costs of moving people and goods, negative impact on value of time in transport processes, direct costs involved like more intensive fuel and material consumption or heightened depreciation of vehicles. Transport could be also perceived as a source of many significant external effects for society and environment, which entails valid environmental costs. The list of transport external effects is relatively long. This is due to the fact that transport is also one of the most important sectors of the modern industrialized economy and modern society. Poorly planned transport system adds to the already chaotic socio-economic setup. This is especially visible in cities where different layers of chaos can interfere and create dangerous synergies. Due to the lack of adequate space management, and this is the case in the discussed spatial chaos, environmental and social externalities are growing, which leads to higher social costs, which every citizen pays for in the final bill. On the other hand well planned transport system should help to curb chaotic socio-economic environment. Thus the key problem analysed in this paper is whether and how transport system could be an ordering force planned and enforced in effective way in order to reduce chaos created by other activities or rather an additional negative effect within the whole spectrum of chaos drivers.
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