Titre : | Paleogeographic provinces and provinciality |
Auteurs : | Charles A. Ross |
Type de document : | Livre |
Editeur : | TULSA : SOCIETY OF ECONOMIC PALEONTOLOGISTS AND MINERALOGISTS, 1974 |
Format : | 1 vol. (233 p.) / cartes, schémas / 25 cm |
Note générale : | Special publication n° 21/Bibliographies |
Langues: | Anglais |
Concepts : |
PALEOGEOGRAPHIE
PALEONTOLOGIE SEDIMENTOLOGIE BIOGEOGRAPHIE FAUNE FLORE ECOSYSTEME ETATS-UNIS |
Index. décimale : | 551.71 |
Résumé : | Segregation of Recent biotas into geographically restricted areas led, during the last hundred years, to investigation of factors that cause provincialism and the phenomena that restrict endemic species and evolutionary lineages to particular provinces. Biogeography as a discipline is a diversified subject that also includes synthesis from other biological and related sciences. Initial analyses in a biogeographic study usually examine the geographical distribution of different species and then attempt to determine similarities and differences in the distribution of each species in order to establish those which occur in the same area and those which do not. In addition, biogeography investigates phenomena giving rise to similarities or differences in these distributional patterns. Biogeography is a many tiered science with several operational levels and paths of inquiry. When interspecific relationships are examined using the present distributional patterns as a base, ecologic and geographic factors are the two primary sets of controls. Because many of the ecologic and geographic factors are constantly changing with time, distributional patterns and composition of component species also change. Introduction of a historical aspect broadens biogeography to include study of evolution of adaptive changes in species, in communities, the long term consequences of these changes, and geographic and climatological changes in barriers and corridors for dispersal that result from geological processes. Attempts to quantify differences in taxonomic composition between biogeographic areas lead to several equations. Analysis of diversity and stability in Recent ecosystems suggest an expansion of possible interpretations in paleobiogeography. To date, paleobiogeography has combined the study of geographical distribution and morphological evolution (taxonomic change) into a historical framework. Development of ecological frameworks for past communities and interpretation of the adaptive significance of morphological changes in fossil groups have begun, and integration of geological processes and information, such as the wealth of sedimentological, climatic, paleogeographic, and structural data, into paleobiogeography has started. |
Exemplaires (1)
Cote | Support | Section | Disponibilité |
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RES 11652 | Livre | Réserve | Disponible |