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Titolo:
TIME-SERIES ANALYSIS OF COPEPOD DIVERSITY AND SPECIES RICHNESS IN THESOUTHERN BAY OF BISCAY OFF SANTANDER, SPAIN, IN RELATION TO ENVIRONMENTAL-CONDITIONS
Autore:
VALDES L; MORAL M;
Indirizzi:
CTR OCEANOG SANTANDER,INST ESPANOL OCEANOG,POB 240 SANTANDER 39080 SPAIN
Titolo Testata:
ICES journal of marine science (Print)
fascicolo: 4, volume: 55, anno: 1998,
pagine: 783 - 792
SICI:
1054-3139(1998)55:4<783:TAOCDA>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
EASTERN NORTH-ATLANTIC; GULF-STREAM; C-HELGOLANDICUS; ZOOPLANKTON; FINMARCHICUS; LIMNOLOGY; ABUNDANCE; FEATURES; PLANKTON; CALANUS;
Keywords:
BAY OF BISCAY; COPEPODS; TEMPORAL VARIABILITY; TIME SERIES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
L. Valdes e M. Moral, "TIME-SERIES ANALYSIS OF COPEPOD DIVERSITY AND SPECIES RICHNESS IN THESOUTHERN BAY OF BISCAY OFF SANTANDER, SPAIN, IN RELATION TO ENVIRONMENTAL-CONDITIONS", ICES journal of marine science (Print), 55(4), 1998, pp. 783-792

Abstract

Changes in the copepod species composition and their relative abundances at two stations on a cross-shelf section off Santander (Spain) in the southern Bay of Biscay are described by means of species richness,Shannon-Weaver diversity, and similarity coefficients. The seasonal and inter-annual variability in these indices is compared with changes observed in thermal stratification indices from monthly collected dataover 5 years (June 1991 to June 1996). Copepods represent the main taxonomic group in the zooplankton assemblage in terms of abundance and persistence. Ordination of the samples by their similarity coefficients has a clear temporal meaning, and the clusters formed are linked to seasonal characteristics of the water column. Autocorrelation and spectral analysis of species richness and diversity show a 12-month periodic cycle throughout the time series, with a less important peak every 30 months. The long-term trends between these indices and the standarddeviation of water column temperature (as an index of thermal stratification) are of opposite sign. The significant negative correlation between the pairs suggests a strong relationship between the maintenanceof copepod diversity and environmental conditions. (C) 1998 International Council for the Exploration of the Sea.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 19:44:42