Martin søndergaard (8 Ergebnisse)

Zustand: New. KlappentextHorse behaviour and welfare is a major issue as horses are mainly sport and recreational animals where the human-animal relation is essential. This work deals with some of the major issues such as horse temperament, early expe.

Taschenbuch. Zustand: Neu. Neuware - 'Horse behaviour and welfare is a major issue as horses are mainly sport and recreational animals where the human-animal relation is essential. Scientific studies on this topic have increased greatly over the last decade and this publication enlightens some of the major issues raised such as horse temperament, early experience, horsing and social management and equine behaviour welfare. Precise studies are described here, that are placed in the more general context of the international scientific advances. Important behavioural aspects concern: how to measure temperament traits and the genetic/experimental influences on temperament, when, how and whether to handle foals in order to improve human/foal relation, the importance of the social environment on the behaviour of young and adult horses. On the other hand, the improvement of equine welfare through better practices is described such as housing design, feeding practices or social grouping. The use of behavioural cues in order to assess welfare is discussed and tested through experimental approaches. This book constitutes a very rich overview of the recent and new research lines in the field of horse behaviour and welfare.'.…

Taschenbuch. Zustand: Neu. The Structuring Role of Submerged Macrophytes in Lakes | Erik Jeppesen (u. a.) | Taschenbuch | Ecological Studies | xix | Englisch | 2012 | Humana | EAN 9781461268710 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu. …

Zustand: New. In English.

Zustand: New. In English.

Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - The Structuring Role of Submerged Macrophytes in Lakes focuses on the remarkably diverse roles played by underwater plants. The book is divided into three parts: 10 thematic chapters, followed by 18 case studies, concluded by three integrative chapters. The topics range from macrophytes as fish food to macrophytes as mollusk and microbe habitat. The consistent theme is the structuring role of plants in lakes. The book will be of interest to aquatic ecologists as well as limnologists, ecosystem ecologists, microbial ecologists, fish biologists, and environmental managers with responsibilities that include lakes.…

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Submerged macrophytes have been the object of intensive research, and a large body of literature exists on their growth, reproduction, and physiology. Several studies have focused on the interactions between submerged macrophytes and other autotrophic components and the impact of the plants on the dynamics of nutrients, dissolved organic and inorganic carbon, oxygen, and pH. Comparatively few studies have dealt with the ability of submerged macrophytes to modulate the structure and dynamics of pelagic and benthic food webs. Recently, however, the amount of research into the structuring role of submerged macrophytes in food webs has markedly increased, and the results obtained so far suggest that sub merged macrophytes are of significant importance for the food web interactions and environmental quality of lakes, even at relatively low areal plant coverage. For example, plants affect the interactions between predacious, planktivorous, and benthivorous fish and between fish and invertebrates, including key organisms such as large zooplankton and snails. Changes in these interactions in turn may have cascading effects on the entire food web in both the pelagial and the littoral zone. To provide a forum for discussion of recent results in this growing field of research and to define future research needs, a workshop was held on 16 to 20 June, 1996, at the Freshwater Centre in Silkeborg, Denmark. The present book is a result of the workshop. It is divided into three parts.…

Paperback. Zustand: Brand New. reprint edition. 471 pages. 9.25x6.10x1.02 inches. In Stock.