didham r k (6 risultati)

Condizione: New. 60, 81 figs. . PB. NEW. . . [9783932795169].

Condizione: Fine. 567, text figs. . HB. Fine copy. Original printing. [9780412749001].

Hardcover. Condizione: Near Fine. No Jacket. 1st Edition. Hardback Condition: Near Fine. Nice, clean second-hand copy. Pencil mark of previous price on the first free end-paper, foxing on the top of the edge. As forests are cut down, altered and fragmented, the communities of organisms associated with them are also affected. Predictions of global species extinction rates based on forest loss range 1% to 10% each decade. Because arthropods comprise the largest component of animal species richness, it is inevitable that many arthropod species will become extinct. Millions of these species are thought to live in the forest canopy. During the last twenty years recognition of the importance of canopy arthropods to global biodiversity and the crucial roles arthropods play in forests has led to a revolution in the study and understanding of the arthropod community structure in the forest canopy. Recent advances have been greatly aided by the development of improved sampling techniques and new methods of access to the forest canopy. Canopy Arthropods brings together for the first time a wide range of the most recent studies of arthropods living in forest canopies and comes from a truly international team of contributors.

Condizione: New. There has been a revolution in the study and understanding of the diversity and structure of arthropod communities in the forest canopy. This volume brings together a range of the most recent studies on canopy arthropods. Editor(s): Stork, Nigel E.; Adis, Joachim; Didham, R.K. Num Pages: 584 pages, biography. BIC Classification: PSVT7. Category: (P) Professional & Vocational; (UP) Postgraduate, Research & Scholarly; (UU) Undergraduate. Dimension: 234 x 156 x 31. Weight in Grams: 995. . 1996. 1996th Edition. hardcover. . . . .

Condizione: New. There has been a revolution in the study and understanding of the diversity and structure of arthropod communities in the forest canopy. This volume brings together a range of the most recent studies on canopy arthropods. Editor(s): Stork, Nigel E.; Adis, Joachim; Didham, R.K. Num Pages: 584 pages, biography. BIC Classification: PSVT7. Category: (P) Professional & Vocational; (UP) Postgraduate, Research & Scholarly; (UU) Undergraduate. Dimension: 234 x 156 x 31. Weight in Grams: 995. . 1996. 1996th Edition. hardcover. . . . . Books ship from the US and Ireland.

Today's southern hemisphere fauna and flora are renowned for their transantartic relaionships, dating back to the break up of Gondwanaland by the end of the Jurassic period, some 150 million years ago. Among Dipterists, the southern continents have long been known to provide the habitats for phylogenetically interesting Sciaroidea, an extremely diverse, cosmopolitan group of bibionomorph flies that includes the well known fungus gnats and gall midges. New Zealand is no exception in this respect, where two species, Heterotricha novaezealandiae and Ohakunea bicolor, were described as early as 1927 by A. L. Tonnoir and F. W. Edwards, and reamain unplaceable within the current family-level classification of the Sciaroidea. The enigmatic relationships of sciaroids like Heterotricha and Ohakunea are the main reason for the ongoing debate on the higher-level systematics within the superfamily. Given that New Zealand's fauna is of such extraordinary significance for understanding the evolution of the world's Sciaroidea, it comes as sonewhat of a surprise that the study by Tonnoir and Edwards has not inspired subsequent, intensive sciaroid research in this part of the world for the last 75 years. This may be partly explained by the worldwide decline in biosystematic expertize, but also partly because the completeness of Tonnoir and Edwards' work has apparently been overestimated. As shown in this paper, New Zealand's sciaroid fauna is far from exhaustively studied. By taking the full methodological advantage of modern, highly effective Malaise trapping, the authors have recently collected and studied a tremendously large and diverse set of samples of Sciaroidea from indigenous forests of New Zealand's main islands. This material, supplemented by collections of numerous New Zealand entomologists over the past 20 years, yielded five new species of sciaroid Diptera which are classified in a new family named Rangomaramidae. Adult morphology, biology and distribution of Rangomaramidae (*long-winged fungus gnats*) are described and illustrated by numerous line drawings as well as light and scanning electron microscopic images. The origin and evolution of Rangomaramidae are discussed in the contex of previous hypotheses on the phylogenetic relationships within Sciaroidea. Rangomaramidae appear to be a relict group of Sciaroidea, with a limited modern dustribution and a comparatively small number of extant species. The new taxa may shed more light on the relationship between fungus gnats and gall midges and on the unresolved question of the sister group of Cecidomyiidae. New taxa: Rangomaramidae n. fam., Rangomarama edwardsi n. sp., Rangomarama humboldti n. sp., Rangomarama leopoldinae n. sp., Rangomarama matilei n. sp., Rangomarama tonnoiri n. sp. 60 pp., 81 figs, br. gr. 8 [24 x 16.7 cm].