Titre :	Phylogeny and historical reconstruction: host parasite systems as keystones in biogeography and ecology
Type de document :	texte imprimé
Auteurs :	Eric P. Hoberg, Auteur
Année de publication :	1996
Importance :	p 243-261
Langues :	Anglais (eng)
Catégories :	SCIENCES DE LA VIE
Mots-clés :	PHYLOGENIE  HOST-PARASITE SYSTEMS  HISTORICAL RECONSTRUCTION  PARASITES  TAPEWORMS  MARSUPIALS  HISTORICAL PROBES
Résumé :	Biodiversity represents the complex interaction of phylogeny, ecology, geography and history as determinants of organismal evolution and distribution. Accordingly, the perception of biotic diversity is a function of scale with respect to populational and ecological identity, spatial relationships and temporal duration. Conceptually, biodiversity includes a range of micro- to macroassociations extending from the enumeration of taxa and elucidation of interactions within contemporary ecosystems to the recognition of ancestrals areas, regions of endemism and significant centers of organismal evolution. At one end of this continuum is historical biogeography, which encompasses the study of pattern and process in the distribution of organisms and historical ecology, which is involved with macroevolutionary process in community development. Thus, with phylogenetic analyses, a record of geological change and knowledge of ecological interactions, hypotheses may be posed about production of biological diversity and evolution community structure within a rigorous macroevolutionary context. In this framework, parasites constitute elegant indicators of the historical and ecological development, temporal longevity, current health and prospects for continuity of biotas. Current research in biodiversity has focused on regions already profoundly influenced by anthropogenic perturbations and predicted to be strongly affected by climatic change. However, many of these approaches to faunal assessment have been limited in scope taxonomically, geographically and temporally. Recent attempts in assessment of biodiversity, although covering a range of local, biomic and global scales, often have concentrated on modern communities and on taxonomically restricted groups, thus obscuring a broader historical and ecological context. There has been a notable but often necessary, focus that has led research to be largely centered on birds, mammals, selected groups of arthropods and vascular plants in an often nondimensional framework that has emphasized contemporary biotic associations.
Numéro du document :	A/BIO
Niveau Bibliographique :	2
Bull1 (Theme principale) :	BIOLOGIE
Bull2 (Theme secondaire) :	BIOLOGIE GENERALE

Phylogeny and historical reconstruction: host parasite systems as keystones in biogeography and ecology [texte imprimé] / Eric P. Hoberg, Auteur . - 1996 . - p 243-261.
Langues : Anglais (eng)

Catégories :	SCIENCES DE LA VIE
Mots-clés :	PHYLOGENIE  HOST-PARASITE SYSTEMS  HISTORICAL RECONSTRUCTION  PARASITES  TAPEWORMS  MARSUPIALS  HISTORICAL PROBES
Résumé :	Biodiversity represents the complex interaction of phylogeny, ecology, geography and history as determinants of organismal evolution and distribution. Accordingly, the perception of biotic diversity is a function of scale with respect to populational and ecological identity, spatial relationships and temporal duration. Conceptually, biodiversity includes a range of micro- to macroassociations extending from the enumeration of taxa and elucidation of interactions within contemporary ecosystems to the recognition of ancestrals areas, regions of endemism and significant centers of organismal evolution. At one end of this continuum is historical biogeography, which encompasses the study of pattern and process in the distribution of organisms and historical ecology, which is involved with macroevolutionary process in community development. Thus, with phylogenetic analyses, a record of geological change and knowledge of ecological interactions, hypotheses may be posed about production of biological diversity and evolution community structure within a rigorous macroevolutionary context. In this framework, parasites constitute elegant indicators of the historical and ecological development, temporal longevity, current health and prospects for continuity of biotas. Current research in biodiversity has focused on regions already profoundly influenced by anthropogenic perturbations and predicted to be strongly affected by climatic change. However, many of these approaches to faunal assessment have been limited in scope taxonomically, geographically and temporally. Recent attempts in assessment of biodiversity, although covering a range of local, biomic and global scales, often have concentrated on modern communities and on taxonomically restricted groups, thus obscuring a broader historical and ecological context. There has been a notable but often necessary, focus that has led research to be largely centered on birds, mammals, selected groups of arthropods and vascular plants in an often nondimensional framework that has emphasized contemporary biotic associations.
Numéro du document :	A/BIO
Niveau Bibliographique :	2
Bull1 (Theme principale) :	BIOLOGIE
Bull2 (Theme secondaire) :	BIOLOGIE GENERALE