Seasonal and diel patterns in singing activity of humpback whales migrating through Bermuda

Humpback whales (Megaptera novaeangliae) produce song and non-song vocalisations, which allows their presence to be detected through passive acoustic monitoring. To determine the seasonal and diel acoustic presence and acoustic behaviour of humpback whales at the migratory stopover site off Bermuda, three hydrophones were deployed between March 2018 and April 2019 on Challenger Bank and the Bermuda platform. Song was the predominant vocalisation type encountered, with 65% of song recordings containing whale chorus and a clear seasonal trend of humpback whale occurrence in the spring and winter months from late December to mid-May. A strong diel pattern in singing activity was detected. Singing activity significantly increased at night relative to the daytime (p<0.01), whilst twilight periods were characterised by intermediate levels of singing. The song structure encountered in spring 2018 consisted of 18 units, 6 themes and 5 transitional phrases. The high occurrence of whale chorus and the strong seasonal and diel patterns of male humpback whale singing activity highlights the importance of Bermuda not just on their northward migration during spring, as described historically, but also on their southward migration during winter. Bermuda therefore constitutes a two-way migratory stopover site for humpback whales. The present study also provides Bermuda’s planning authorities with better constraints on the duration and intensity of anthropogenic activities in these waters

Wirkung von Rhizobien-Impfmitteln auf Ertragsparameter und Rohproteinertrag der Schmalblättrigen Lupine

Es wurden verschiedene Rhizobien-Impfmittel für Lupinus angustifolius L. getestet. Die Impfmittel basieren auf unterschiedliche Formulierungen: flüssig, Torf oder Holzkohle mit Steinmehl. Die Ergebnisse zeigen sehr unterschiedliche Charakteristika für die beiden Versuchsjahre

Purchasing and supply management (PSM) competencies: Current and future requirements

Purchasing & Supply Management (PSM) competencies are the individual-level foundations of organisational PSM performance. In light of recent developments in the workplace and the external environment, the question of what PSM competencies are needed now, as well as in the future, becomes one of increasing importance. Analysing qualitative data from 46 interviews from 16 companies, this paper identifies what current and future competencies are required by PSM professionals, categorizes PSM competencies according to the framework established by Tassabehji and Moorhouse (2008) and establishes how these competency requirements have changed over the last ten years. The most important current competencies required by PSM professionals are negotiation, communication and relationship management (e.g. ‘Interpersonal communication’), strategy and analytics (e.g. ‘Strategic thinking’), as well as professional knowledge requirements (e.g. ‘Basic knowledge on PSM role & processes’). When looking at future requirements, competencies in the areas of sustainability and digitisation were identified as becoming increasingly important. Overall, 17 competencies in addition to those shown in Tassabehji and Moorhouse (2008) were identified. The most prominent new competency areas are related to digitisation (e.g. ‘eProcurement Technology’, ‘Automation’), innovation (e.g. ‘Innovative sourcing’) and sustainability. The interviewees also identified 11 new competencies within the interpersonal skills cluster, most of them at the intersection between competencies and traits (e.g. ‘Deal with Ambiguity’, ‘Curiosity’, ‘Passion’)

Heiko Waller: Sozialmedizin. Grundlagen und Praxis. Stuttgart: Kohlhammer Verlag 2002 (255 S.) [Rezension]

Rezension von: Heiko Waller: Sozialmedizin. Grundlagen und Praxis. Stuttgart: Kohlhammer Verlag 2002 (255 S.; ISBN 3-17-017015-5; 24,80 EUR)

Praktika: Pflicht oder Kür? - Perspektiven und Ziele der Hochschulausbildung zwischen Wissenschaft und Beruf

In diesem Beitrag werden grundlegende Aspekte zur Gestaltung des konstitutiven und integralen Ausbildungsbestandteils Praktikum formuliert. Auf dieser Grundlage werden Überlegungen in bezug auf die Qualifizierung der zentralen und zugleich prekären berufsqualifizierenden Aufgabe der hochschulischen Ausbildung an der Schnittstelle zwischen Wissenschaft(lichkeit) und Berufs(qualifikation) zur Diskussion gestellt. (DIPF/Orig.

Thomas Freund/Werner Lindner (Hrsg.): Prävention. Zur kritischen Bewertung von Präventionsansätzen in der Jugendarbeit. Opladen: Leske und Budrich 2001 (188 S.) [Rezension]

Rezension von: Thomas Freund/Werner Lindner (Hrsg.): Prävention. Zur kritischen Bewertung von Präventionsansätzen in der Jugendarbeit. Opladen: Leske und Budrich 2001 (188 S.; ISBN 3-8100-2847-9)

Ivo Züchner: Aufstieg im Schatten des Wohlfahrtsstaates. Expansion und aktuelle Lage der Sozialen Arbeit im internationalen Vergleich. Weinheim/München: Juventa 2007 (304 S.) [Rezension]

Rezension von: Ivo Züchner: Aufstieg im Schatten des Wohlfahrtsstaates. Expansion und aktuelle Lage der Sozialen Arbeit im internationalen Vergleich. Weinheim/München: Juventa 2007 (304 S.; ISBN 978-3-7799-1689-5; 25,00 EUR)

The education of Chauncey Gardener: Civics for a global age

Entering the 21st Century, both historical trends and educational reform are hotly debated topics. Discussion of epoch, the end of the cold war, and educational excellence put the focus on how best the social studies curriculum can be made responsive. In this discussion competing perspectives vie for limited space in the social studies. One such perspective is the emergence of a call in many quarters for global education. There are, at present, many models being proposed to answer this call. This study looks at a few of these approaches to teaching global education. One is developed through looking into current research in this area and suggests a theoretical model based on human values, global systems, global problems and global history. This model is compared with two others obtained through an observation of two history teachers in a local high school. One of these is of an area studies orientation; the other is augmented toward a more traditional Western civilization course. This report suggests that while the systems model is theoretically appealing it may need modification in order to adapt to the realities of the classroom. It also concludes that foremost amongst the constraints of the social studies classroom at this high school is the question of the amount of time allotted to global education