Revision of the Suborders, Families, and Genera of the Scleractinia PDF Download
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Author: Dragica Turnšek Publisher: Založba ZRC ISBN: 9616182447 Category : Nature Languages : en Pages : 520
Book Description
Velik del slovenskega ozemlja je zgrajen iz mezozojskih, to je triasnih, jurskih in krednih karbonatnih kamnin, katerih pomemben delež sestavljajo koralni grebeni. Ti so v Sloveniji mestoma tako obsežni, da se prištevajo med največje in najbogatejše v svetu. Njihovi glavni graditelji so korale, ki jih avtorica raziskuje že vrsto let. Knjiga združuje rezultate vseh dosedanjih del in jih dopolnjuje z najnovejšimi raziskavami doma in s sodobnimi ugotovitvami v svetu. Po enotnem sistemu je predstavljenih 211 vrst koral, ki po starosti sodijo v zgornji trias, zgornjo juro ter spodnjo in zgornjo kredo.
Author: Stephen J. Culver Publisher: Cambridge University Press ISBN: 1139426737 Category : Science Languages : en Pages : 519
Book Description
Concern about the effects of global change on our planet's future has driven much research into the last few thousand years of earth history. In contrast, this volume takes a much longer viewpoint to provide a historical perspective to recent and future global change. Over 40 international specialists investigate the reaction of life to global environmental changes, from Cretaceous times to the turn of the century. During this time earth's climate has changed from a very warm, 'greenhouse' phase with no significant ice sheets to today's 'ice-house' world. A wide spectrum of animal, plant and protistan life is discussed, encompassing terrestrial, shallow-marine and deep-marine realms. Each chapter considers a particular taxonomic group, looking first at the general picture and then focusing on more specialized aspects such as extinctions, diversity and biogeography. This volume will form an invaluable reference for researchers and graduate students in paleontology, geology, biology, oceanography and climatology.
Author: John Edward Norwood Veron Publisher: Cornell University Press ISBN: 9780801482632 Category : Nature Languages : en Pages : 340
Book Description
As concerns about the change in global climate and the loss of biodiversity have mounted, attention has focused on the depletion of the ozone layer and the destruction of tropical rainforests. But recently scientists have identified another seriously endangered ecosystem: coral reefs. In Corals in Space and Time, J.E.N. Veron provides a richly detailed study of corals that will inform investigations of these fragile ecosystems. Drawing on twenty-five years of research, Veron brings together extensive field observations about the taxonomy, biogeography, paleontology, and biology of corals. After introducing coral taxonomy and biogeography, as well as relevant aspects of coral biology for the non-specialist, he provides an interpretation of the fossil record and paleoclimates, an analysis of modern coral distribution, and a discussion of the evolutionary nature and origins of coral species. Revealing a sharp conflict between empirical observations about the geographical variation within species, Veron introduces a non-Darwinian theory of coral evolution. He proposes that the evolution of coral species is driven not primarily by natural selection, but by constantly shifting patterns of ocean circulation, which produce changing variations of genetic connectivity. This mechanism of speciation and hybridization has far-reaching consequences for the study of all types of corals and potentially many other groups of organisms as well.