Review of Stockhausen — Mikrophonie I

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Ring Modulation and Structure

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Teaching electronic music – journeys through a changing landscape

In this essay, electronic music composer Simon Emmerson examines the development of electronic music in the UK through his own experience as composer and teacher. Based on his lifetime experiences, Emmerson talks about the changing landscape of teaching electronic music composition: "˜learning by doing' as a fundamental approach for a composer to find their own expressive voice; the importance of past technologies, such as analogue equipment and synthesizers; the current tendencies of what he calls the "˜age of the home studio'; the awareness of sonic perception, as opposed to the danger of visual distraction; questions of terminology in electronic music and the shift to the digital domain in studios; among other things. [note by editor]

Review of Four Days of Contemporary Music, Athens, September 19-23, 1978

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Review of Karlheinz Stockhausen: Nr. 17, Mikrophonie II

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Review of Three Days of Contemporary Music, Athens

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Stockhausen’s Stimmung

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The British Electro-Acoustic Music Association

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Spatial link between Adélie penguin foraging effort and krill swarm abundance and distribution

Understanding how predator foraging behaviour is influenced by the distribution and abundance of prey is a fundamental challenge in marine foraging ecology. This is particularly relevant in Southern Ocean ecosystems where the relationships between select predator species and Antarctic krill (Euphausia superba) can inform ecosystem conservation and precautionary fisheries management. In this study, we examine the spatial associations between krill swarm characteristics and Adélie penguin (Pygoscelis adeliae) foraging effort at Béchervaise Island, a long-term monitoring site in East Antarctica. Spatially integrating two years of regional-scale krill acoustic data with contemporaneous horizontal and vertical movement information from chick-rearing adult Adélie penguins, we assessed how penguin foraging effort changed in relation to krill swarm abundance and distribution across the survey area. Our findings show that penguin diving effort was focused in areas with a high number of krill swarms, yet they did not focus their effort in areas with high krill biomass. These results suggest the spatial organisation of Adélie penguin foraging effort can provide an indication of krill presence (and/or availability) but may not reflect krill abundance. We discuss our results in the context of penguin foraging strategies, capturing single krill within the water column rather than the engulfment feeding strategy of larger marine mammals such as whales. Our work substantially improves understanding of penguin-krill dynamics in East Antarctica and provides a greater level of nuance regarding the utility of Adélie penguins as indicator species under CCAMLR’s Ecosystem Monitoring Programme (CEMP). Understanding these predator-prey linkages will become increasingly important for managing any expanding krill fisheries in the region or changes in the prey field under future climate change scenarios. Thus, our results can be interpreted alongside other ecological indicators to support management of the East Antarctic sector of the Southern Ocean ecosystem