Pollen spectra found in sediments enable the research of quantitative changes in vegetation composition in the past. The fact is conditioned upon assumption of unchangeable linear relationship between abundance of pollen and the vegetation that is responsible for its production. Calibration of this relationship is experimentally performed on modern pollen samples and current vegetation. Relative pollen produktivity etimates (PPEs) represents basic parameters for the conversion of proportional pollen data into the vegetational ones. Their knowledge is indispensible for the quantitative vegetation restoration and for the simulating of the processes of pollen dispersion and deposition. PPEs estimation is performed by ERV model which corrects nonlinear relationship of proportional pollen and vegetation data back to the linear relationship. ERV model estimates PPEs values together with values of pollen background by maximum likelihood method. Knowledge of PPEs of main tree species is crucial for the understanding of processes which takes place on the level of landscape scale. Model area of Křivoklátsko was selected due to its high forest coverage and tree diversity. Twenty-four localities were chosen upon stratified random selection. Moss polsters containing modern pollen loading were taken and detailed...

Brutalist architecture, popularized in Britain in the late 1950s and heralded as a progressive form of Modernism in the United States until the 1970s, now presents a conundrum to preservationists as it ages. Once critically acclaimed, many Brutalist buildings have lost their appeal over time. The unpolished materials have proven unpopular with many who live and work in these structures, and key examples of the style are now facing demolition. Though “Brutalism” has become a nebulous architectural designation in the preservation community, this paper focuses on a specific subset of late Modernist architecture that primarily utilizes unfinished concrete to promote the philosophy of material truth and unapologetic permanence. While artistry of form and overall functionality affect preservation of Brutalist buildings in the United States, an important factor in the decision to demolish is often overlooked: the interplay of public opinion with critical acclaim, both in the past and within current architectural climates. This project examines the Brutalist approach to architecture and chronicles the shifts in critical and public perspective of several key case studies, focusing on university structures (the Yale Art and Architecture Building, Harry Ransom Center, and the University of Texas School of Nursing), theaters (Morris Mechanic Theater and Alley Theater), and civic buildings (Orange County Government Center, Boston City Hall, and Prentice Women’s Hospital). Understanding how and why shifts in opinion took place is critical in making informed preservation decisions about Brutalist architecture. / text