Thomas M. Gehring

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We developed a mean field, metapopulation model to study the consequences of habitat destruction on a predator-prey interaction. The model complements and extends earlier work published by Bascompte and Solé (1998, J. theor. Biol.195, 383-393) in that it also permits use of alternative prey (i.e., resource supplementation) by predators. The current model is(More)
677 The consequences of delegation to independent agencies: Separation of powers, discursive governance and the regulation of telecommunications in Germany Abstract. Whereas the delegation of regulatory powers is usually examined from the prin-cipal's perspective, this article explores the consequences of delegation for the regulatory output. Empirically,(More)
Adolescents' perceptions of family relationships were studied using the FAST, a spatial technique in which wooden figures were placed on a board to represent cohesion and power. 150 subjects, drawn equally from sixth, ninth, and twelfth grades, portrayed the family in 2 representations: as perceived typically and ideally. Father-mother, father-child, and(More)
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This article argues that a World Environment Organisation (WEO) does not promise to enhance international environmental governance. First, we claim that the establishment of an international organisation alone in a policy field currently populated by regimes cannot be expected to significantly improve environmental governance because there is no qualitative(More)
Since European settlement, over 50 % of coastal wetlands have been lost in the Laurentian Great Lakes basin, causing growing concern and increased monitoring by government agencies. For over a decade, monitoring efforts have focused on the development of regional and organism-specific measures. To facilitate collaboration and information sharing between(More)
No part of this work may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission from the Publisher, with the exception of any material supplied specifically for the purpose of being entered and executed on a computer(More)
Perceptions of family cohesion and hierarchy structures were assessed by the Family System Test (FAST), a clinically-derived figure placement technique. Parents (N = 140) and their preadolescent offspring (N = 70) completed typical and conflict representations in individual as well as group settings. Typical representations were characterized by balanced(More)