Hildesheimer Geographische Studien, Band 5

In diesem Band enthalten: Hannah Graen, Robin Stadtmann & Martin Sauerwein: Modellierung von Temperaturdaten und Temperaturveränderungen im Nationalpark Asinara, Sardinien (S. 1-27); Sarah Matheis, Nico Herrmann & Martin Sauerwein: Entwicklung eines Monitoringkonzeptes für Niedermoore am Beispiel des Bergen-Weißacker Moores, Süd-Brandenburg (S. 28-63); Martin Sauerwein, Jan-Philip Dieck & Robin Stadtmann: Urbane Böden im Kontext von Ecosystem Services (S. 64-89); Martin Sauerwein, Julia Jaquemotte & Lars Germershausen: Ursachen der Nitratbelastung des Grundwassers im Raum Hannover/Hildesheim (S. 90-110); Sabine Panzer-Krause: Einkaufen in der Hildesheimer Innenstadt. Auswirkungen der Arneken Galerie auf den innerstädtischen Einzelhandel (S. 111-132); Robin Stadtmann, Nico Herrmann, Jasmin Karaschewski & Martin Sauerwein: Bodenbewusstsein: Hildesheimer Aktivitäten zum Jahr des Bodens 2015 (S. 133-140

Hildesheimer Geographische Studien 2

Robin Stadtmann, Christine Jung-Dahlke & Martin Sauerwein: Entwicklung einer Geodatenbank mittels GIS und Erdas Imagine für den Nationalpark Asinara (Sardinien) Hannah Graen & Martin Sauerwein: Auswertung landwirtschaftlicher Kalender aus der Hildesheimer Börde zur Analyse lokaler Klimaveränderungen und deren Auswirkungen auf Vegetation und Landwirtschaft Kristin Gawert & Sabine Panzer-Krause: Der demographische Wandel und seine Auswirkungen im Ortsteil Barsinghausen-Bantorf in der Region Hannover Sabine Panzer-Krause: Innerstädtischer Einzelhandel und Konsum in Hildesheim. Ergebnisse der Datenerhebung 201

Hildesheimer Geographische Studien 5

In diesem Band enthalten: Hannah Graen, Robin Stadtmann & Martin Sauerwein: Modellierung von Temperaturdaten und Temperaturveränderungen im Nationalpark Asinara, Sardinien (S. 1-27); Sarah Matheis, Nico Herrmann & Martin Sauerwein: Entwicklung eines Monitoringkonzeptes für Niedermoore am Beispiel des Bergen-Weißacker Moores, Süd-Brandenburg (S. 28-63); Martin Sauerwein, Jan-Philip Dieck & Robin Stadtmann: Urbane Böden im Kontext von Ecosystem Services (S. 64-89); Martin Sauerwein, Julia Jaquemotte & Lars Germershausen: Ursachen der Nitratbelastung des Grundwassers im Raum Hannover/Hildesheim (S. 90-110); Sabine Panzer-Krause: Einkaufen in der Hildesheimer Innenstadt. Auswirkungen der Arneken Galerie auf den innerstädtischen Einzelhandel (S. 111-132); Robin Stadtmann, Nico Herrmann, Jasmin Karaschewski & Martin Sauerwein: Bodenbewusstsein: Hildesheimer Aktivitäten zum Jahr des Bodens 2015 (S. 133-140

Contextualizing leadership: Transformational leadership and Management-By-Exception-Active in safety-critical contexts

Within the existing leadership literature, the role of context for shaping the effectiveness of leadership is yet to be fully understood. One type of context that poses particular challenges for leaders is an environment where safety is highly critical (i.e., high exposure to risk and likelihood of an accident). We hypothesize that such environments call for specific transformational and transactional leadership behaviors, which differ from those behaviors most effective in less safety-critical contexts. We tested for moderating effects of perceptions of hazard exposure and accident likelihood on the relationship between transformational leadership and Management-By-Exception-Active with safety and job performance outcomes. The moderation effects of accident likelihood on the link between transformational / MBEA leadership and subordinate performance were supported, demonstrating variation in the effectiveness of leader behaviors dependent on followers’ perceptions about the likelihood for an accident. MBEA leadership was found to be more strongly linked to contextual performance and safety participation if accident likelihood was high, but not under low accident likelihood conditions. Transformational leadership was found to be less strongly related to these performance outcomes in contexts where safety was perceived as highly critical. Our findings have important theoretical and practical implications, and call into question the universality of the transformational-transactional leadership framework. Practical considerations focus on the implications for managers and supervisors who operate in safety-critical contexts

A framework for understanding collective leadership : the selective utilization of leader and team expertise within networks

To date, the dominant approach to leadership research assumes that all aspects of the leadership role within a team are embodied by a single individual. In the real world, however, this is rarely the case. Rather, multiple individuals within the team may serve as leaders in both formal and informal capacities, and the shifting of leadership responsibilities is often rooted in which individual's expertise is most relevant to the given problem. In the present effort, we add to the rapidly growing body of work that focuses on the distribution of the leadership role among multiple individuals. We have reviewed relevant extant literature and proposed an integrated framework for understanding the collective leadership process. Also, in developing this framework we have taken an information and expertise-based approach such that we propose that collective leadership, or the distribution of the leadership role, is a function of selectively utilizing the information or specialized expertise that individuals within the network possess. In reviewing the framework, 55 propositions with regard to the collective leadership process are outlined and suggestions for future research are provided