Towards self-organisational and multiple-performance capacity in architecture

Techniques and Technologies in Morphogenetic Design expands and develops the themes of the previous, highly successful Emergence: Morphogenetic Design Strategies issue of 4 (Vol 74, No 3, 2004), which was also guest-edited by Michael Hensel, Achim Menges and Michael Weinstock of the Emergence and Design Group. While the first volume elucidated the concepts of emergence and self-organisation in relation to the discipline of architecture, this issue augments its theoretical and methodological foundation within a biological paradigm for architectural design, while also discussing promising, related, instrumental techniques for design, manufacturing and construction. Michael Hensel introduces the issue and explains how it addresses a much broader range of scales, from the molecular to that of macro-structure and, beyond, to ecological relations. Copyright © 2006 John Wiley & Sons, Ltd.     

Contemporary abundance patterns of Cyclotella sensu lato diatom taxa in Lake Superior: Assessing responses to physical and chemical gradients and potential links to climate change

Many studies attribute shifts in relative abundances of Cyclotella sensu lato diatom taxa in freshwater lakes over the past 150?years to climate change. Although abundances of several of these taxa have also changed in Lake Superior over the last century, the specific drivers are currently unclear. This study used multiple linear regression to analyze long-term planktonic monitoring data to identify drivers of changing cell densities of six Cyclotella sensu lato species, four shown to be responsive to climate-driven change in smaller lakes and two species with similar morphology to two previously assessed taxa: Discostella stelligera and the morphologically similar D. pseudostelligera, Lindavia comensis and the morphologically similar L. delicatula, Lindavia ocellata, and Lindavia bodanica. Assessed variables associated with climate-driven physical change included surface water temperature and light availability, with turbidity and thermocline depth as indicators of the light environment. One to three variables explained 8–61% variation for each of 5 taxa from 2001 to 2011, significant predictive variables were not identified for D. stelligera. Multiple linear regression identified nutrients, including nitrate, phosphorus, and silica, as essential in explaining distributions of all the other assessed taxa. A physical variable associated with climate explained changes of one taxon: L. ocellata, which increased with lower water temperatures. Climate-driven species responses were not as apparent as in other systems; specifically, changes in the light environment of this clear lake did not explain abundance changes in any of the taxa. Multiple and complex environmental variables drive Cyclotella sensu lato abundance patterns in Lake Superior, possibly suggesting ecotype formation.     

The Sixth Sense: The Meaning of Atmosphere and Mood

Through its blinkered emphasis on visual form and function, has modernity divorced us from our sense of belonging to the cosmos? What, then, is the secret of creating architecture that envelops and inspires us? As scientific research increasingly favours the point of view that our unconscious – as opposed to detailed – perception has higher existential value, Helsinki-based architect and professor emeritus Juhani Pallasmaa argues that peripheral vision is key. Only through engagement with this can architects trigger what could be described as our sixth sense – the atmospheric.