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Titolo:
ENVIRONMENTAL-INFLUENCES ON LOCAL AMPHIBIAN DIVERSITY - THE ROLE OF FLOODS ON RIVER BASINS
Autore:
REAL R; VARGAS JM; ANTUNEZ A;
Indirizzi:
UNIV MALAGA,FAC CIENCIAS,DEPT BIOL ANIM E-29071 MALAGA SPAIN
Titolo Testata:
Biodiversity and conservation
fascicolo: 4, volume: 2, anno: 1993,
pagine: 376 - 399
SICI:
0960-3115(1993)2:4<376:EOLAD->2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Keywords:
SPECIES DIVERSITY; AMPHIBIAN BIOGEOGRAPHY AND ECOLOGY; HYDROGRAPHIC BASINS; FLOOD DISTURBANCES; ENVIRONMENTAL GRADIENTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
NO
Recensione:
Indirizzi per estratti:
Citazione:
R. Real et al., "ENVIRONMENTAL-INFLUENCES ON LOCAL AMPHIBIAN DIVERSITY - THE ROLE OF FLOODS ON RIVER BASINS", Biodiversity and conservation, 2(4), 1993, pp. 376-399

Abstract

We tested two hypotheses about boundary units and seven about environmental control of species diversity in order to explain geographical trends in the richness of amphibian species in the Mediterranean watershed of the southern coast of the Iberian Peninsula. The number of amphibian species tends to decrease from west to east. The longitudinal trend in the richness of amphibian species actually occurs on passing from one basin to another, but there is not any longitudinal trend within the basins. Multivariate analyses confirmed that the disturbances ofepisodic river-basin floodings were the principal factor which controls the richness of amphibian species. They explained 94.8% of the observed variations in the richness of amphibian species in this area, according to the intermediate disturbance hypothesis. We propose hydrographic basins as suitable geographical units for further biogeographicalanalysis and for considering the role of disturbances produced by floods in the environmental control of species diversity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 09:56:25