wade p a (21 Ergebnisse)

Zustand: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,300grams, ISBN:9780749417116.

Hardcover. Zustand: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Heft; Zustand: Gut. 11 Seiten; Der hier angebotene Sonderdruck ist informativ und kurz gehalten. Er stammt aus der Separaten-Sammlung einer wissenschaftlichen Bibliothek und trägt neben einem Stempel handschriftliche Vermerke auf dem Frontblatt. Insgesamt ordentlicher Erhaltungszustand. ENGLISCH; Aufgrund der Rarität und des geringen Umfangs des Werkes bitten wir um Verständnis, dass dieser Sonderdruck vom Rückgaberecht ausgeschlossen ist. Sprache: Englisch Gewicht in Gramm: 60.

Soft cover. Zustand: As New. US SW Monteiro: This 334 page trade paperback is like new. MONTEIRO: ,Yellow cover, black title.

Paperback. Zustand: Fair. Revised. The item might be beaten up but readable. May contain markings or highlighting, as well as stains, bent corners, or any other major defect, but the text is not obscured in any way.

Zustand: Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In poor condition, suitable as a reading copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,2200grams, ISBN:0853693056.

Zustand: New. In.

Zustand: New. In.

Paperback. Zustand: Brand New. 130 pages. 7.00x0.33x10.00 inches. In Stock.

Zustand: New. In.

Zustand: New. In.

In the final stages of an elaborate courtship, many slugs and snails shoot calcareous 'love' darts into each other. While darts improve the reproductive success of the shooter, by promoting sperm survival in the recipient, it is unclear why some species have darts and others do not. In fact, dart use has barely been studied, except in the garden snail Cantareus aspersus (Helix aspersa). An evolutionary approach was therefore taken to attempt to understand the origin and use of darts, by investigating mating behaviour in a wide range of species. The prediction was that, because darts could have arisen out of an escalating cycle of sperm digestion and investment in sperm, then darts should be found in taxa that enforce simultaneous reciprocity during mating. Likewise, they should not be found in taxa that mate unilaterally, because the co-evolutionary cycle is absent or reduced. Mating behaviour in 60 genera (28 families) of land snails and slugs was recorded, and compared against dart use across the whole of a stylommatophoran phylogeny. 'Face-to-face' simultaneous reciprocal-mating behaviour is restricted to three monophyletic groups of snails and slugs, and dart-bearing species are a subset within the same clades, which suggests a link, though not necessarily a causal one. As yet, we are unable to quantify the extent to which darts or mating behaviour, as well as several other correlated characters, are determined by common ancestry or regimes of natural or sexual selection, because the current phylogeny lacks resolution. However, the results emphasize that to understand the use of darts, then data are required from a wide range of species. The realization that several characters are correlated may stimulate further research, and could eventually lead to some testable models for dart and mating behaviour evolution. 10 pp., 1 fig., 2 tabs, 4.

Zustand: New. This guide will help you track the results of post--training performance.&Uumlber den AutorPamela A. Wade is the author of Measuring the Impact of Training: A Practical Guide to Calculating Measurable Results, 2nd, Revised Editio.

Zustand: New. Children are often patronized or idealized by adults. Rarely do we look for strengths that can serve as foundations for growth and development. In this volume, 20 contributors provide a multidisciplinary view of childhood by listening and understanding the .

Zustand: New.

Binder. Zustand: Very Good. 508 pages; very minor, very faint smudge on the top exterior edge of textblock. Light creasing on a prelim. ; - Your satisfaction is our priority. We offer free returns and respond promptly to all inquiries. Your item will be carefully cushioned in bubble wrap and securely boxed. All orders ship on the same or next business day. Buy with confidence.

Zustand: Good. Used - Good. Your purchase helps support Sri Lankan Children's Charity 'The Rainbow Centre.' Ex-library, but has been well cared for. Our donations to The Rainbow Centre have helped provide an education and a safe haven to hundreds of children who live in appalling conditions.

Taschenbuch. Zustand: Neu. Macrophytes in Aquatic Ecosystems: From Biology to Management | Proceedings of the 11th International Symposium on Aquatic Weeds, European Weed Research Society | J. M. Caffrey (u. a.) | Taschenbuch | xii | Englisch | 2010 | Springer | EAN 9789048173587 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Macrophytes and macrophytes ecology have gained an added importance with the introduction of, and legal requirement to implement, the European Water Framework Directive. This reflects the valuable role that aquatic plant communities play in assessing the ecological status of water bodies. Significant changes in the status and general abundance of these communities has been recorded in the last three decades, consequent on such factors as global warming and, increasingly, on the spread of aggressive alien species. These changes have been most felt in those waters that are exploited for amenity and recreational pursuits.The increased biomass of aquatic vegetation in water bodies has adversely impacted on leisure use of these systems but also on their use for agricultural, flood relief, municipal and domestic purposes. The loss to national economies resulting from this excessive plant biomass has been appreciable and has put pressure on water managers to develop weed control procedures that are efficient, environmentally sensitive and cost-effective. The results from the most up-to-date research activities and field trials of leading aquatic plant scientists and managers in all five continents, aimed at resolving these weed problems, has been drawn together in this volume.The title of this special issue, 'Macrophytes in aquatic ecosystems: from biology to management', is wide-ranging and reflects the broad scope and scale of the papers presented therein. It further recognises the old paradigm: 'knowledge to achieve management and management to achieve knowledge'.

Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Macrophytes and macrophytes ecology have gained an added importance with the introduction of, and legal requirement to implement, the European Water Framework Directive. This reflects the valuable role that aquatic plant communities play in assessing the ecological status of water bodies. Significant changes in the status and general abundance of these communities has been recorded in the last three decades, consequent on such factors as global warming and, increasingly, on the spread of aggressive alien species. These changes have been most felt in those waters that are exploited for amenity and recreational pursuits.The increased biomass of aquatic vegetation in water bodies has adversely impacted on leisure use of these systems but also on their use for agricultural, flood relief, municipal and domestic purposes. The loss to national economies resulting from this excessive plant biomass has been appreciable and has put pressure on water managers to develop weed control procedures that are efficient, environmentally sensitive and cost-effective. The results from the most up-to-date research activities and field trials of leading aquatic plant scientists and managers in all five continents, aimed at resolving these weed problems, has been drawn together in this volume.The title of this special issue, 'Macrophytes in aquatic ecosystems: from biology to management', is wide-ranging and reflects the broad scope and scale of the papers presented therein. It further recognises the old paradigm: 'knowledge to achieve management and management to achieve knowledge'.

Paperback. Zustand: Brand New. 275 pages. 10.00x7.60x0.65 inches. In Stock.