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Titolo:
Recolonisation of meiofauna after catastrophic iceberg scouring in shallowAntarctic sediments
Autore:
Lee, HJ; Vanhove, S; Peck, LS; Vincx, M;
Indirizzi:
State Univ Ghent, Dept Biol, Marine Biol Sect, B-9000 Ghent, Belgium StateUniv Ghent Ghent Belgium B-9000 e Biol Sect, B-9000 Ghent, Belgium British Antarctic Survey, Nat Environm Res Council, Cambridge CB3 0ET, England British Antarctic Survey Cambridge England CB3 0ET idge CB3 0ET, England
Titolo Testata:
POLAR BIOLOGY
fascicolo: 12, volume: 24, anno: 2001,
pagine: 918 - 925
SICI:
0722-4060(200112)24:12<918:ROMACI>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
MARINE NEMATODE ASSEMBLAGES; MATURITY INDEX; SIGNY ISLAND; DISTURBANCE; ENVIRONMENT; COLONIZATION; COMMUNITY; DIVERSITY; IMPACTS; BAY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Lee, HJ State Univ Ghent, Dept Biol, Marine Biol Sect, KL Ledeganckstr 35,B-9000 Ghent, Belgium State Univ Ghent KL Ledeganckstr 35 Ghent Belgium B-9000 Belgium
Citazione:
H.J. Lee et al., "Recolonisation of meiofauna after catastrophic iceberg scouring in shallowAntarctic sediments", POLAR BIOL, 24(12), 2001, pp. 918-925

Abstract

A series of 10 samples from sediment in and adjacent to a shallow coastal iceberg scour at Signy Island. Antarctica. were taken by hand coring from 17 December 1993 until 23 August 1994. Scouring by the iceberg led to more than a 95% decrease in meiofaunal abundance and to a certain degree of reduction in diversity. Nematodes were always the most dominant group of meiofauna. The return of major meiofauna groups to control levels was accomplishedin 30 days, although a decrease in abundance on the 50th day made interpretation difficult. The pioneering meiofaunal colonisers were copepods and ostracods. followed by nematodes. Microlaimus sp.1 was dominant among the nematodes throughout the whole period. Epistratum feeders and non-selective deposit feeders were highly dominant over selective deposit feeders and predators/omnivores. The Maturity Index. a measure for stress within nematode communities. was relatively low at all times and in controls, which indicatesthat r-strategists prevail in this community. In spite of the catastrophicdestruction, nematode community structure was not affected by the iceberg impact. and there was no evidence of succession during recovery. This suggests that the nematode community in the shallow subtidal coast at Signy Island is well adapted to ice disturbance.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 19:09:01