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Titolo:
Density-dependent recruitment after winter disturbance on tidal flats by the lugworm Arenicola marina
Autore:
Reise, K; Simon, M; Herre, E;
Indirizzi:
Alfred Wegener Inst Polar & Marine Res, Wattenmeerstn Sylt, D-25992 List Auf Sylt, Germany Alfred Wegener Inst Polar & Marine Res List Auf Sylt Germany D-25992 any
Titolo Testata:
HELGOLAND MARINE RESEARCH
fascicolo: 3, volume: 55, anno: 2001,
pagine: 161 - 165
SICI:
1438-387X(200108)55:3<161:DRAWDO>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
DUTCH WADDEN SEA; MACROBENTHIC ANIMALS; SEDIMENT-REWORKING; ABUNDANCE; BIOMASS; POPULATIONS; TEMPERATURE; MACROFAUNA;
Keywords:
Arenicola marina; winter; recruitment; adult-juvenile interaction; Wadden Sea;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Reise, K Alfred Wegener Inst Polar & Marine Res, Wattenmeerstn Sylt, D-25992 List Auf Sylt, Germany Alfred Wegener Inst Polar & Marine Res List Auf Sylt Germany D-25992
Citazione:
K. Reise et al., "Density-dependent recruitment after winter disturbance on tidal flats by the lugworm Arenicola marina", HELG MAR R, 55(3), 2001, pp. 161-165

Abstract

The polychaete Arenicola marina is abundant and widespread on intertidal sand flats in Konigshafen (island of Sylt, North Sea). Juveniles overwinter in subtidal channels and then colonize the upper tidal zone above the rangeof the adults. In the summers of 1995 and 1997, after a mild and a moderate winter, a distinct nursery belt fringing the shoreline was apparent. The severe winter of 1995/96 changed this pattern. Population size of the adults was halved, and in summer 1996 the juveniles were no longer restricted toan upper intertidal belt and settled over a wide range of tidal flats where adults were diminished. This spatial expansion of recruits is assumed to be a density-dependent response. An overcompensation by one-third of the previous population size did not carry over into the next year. Compared to some other species of the tidal-flat fauna, the disturbance effect by the severe winter on the lugworm population was small and brief.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 05:39:38