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Titolo:
THE SAND DUNE VEGETATION OF CHRYSTALLS BEACH, SOUTHERN NEW-ZEALAND, WITH PARTICULAR REFERENCE TO THE CUSHION COMMUNITY
Autore:
DROBNER U; STEEL JB; SMITH B; WILSON JB;
Indirizzi:
UNIV OTAGO,DEPT BOT,POB 56 DUNEDIN NEW ZEALAND UNIV OTAGO,DEPT BOT DUNEDIN NEW ZEALAND
Titolo Testata:
New Zealand journal of ecology
fascicolo: 2, volume: 19, anno: 1995,
pagine: 143 - 151
SICI:
0110-6465(1995)19:2<143:TSDVOC>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
GROWTH;
Keywords:
CUSHION COMMUNITY; DRY SLACKS; MAGNESIUM; SAND DUNE; SWITCH; WIND;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
U. Drobner et al., "THE SAND DUNE VEGETATION OF CHRYSTALLS BEACH, SOUTHERN NEW-ZEALAND, WITH PARTICULAR REFERENCE TO THE CUSHION COMMUNITY", New Zealand journal of ecology, 19(2), 1995, pp. 143-151

Abstract

The sand dune system at Chrystalls Beach, New Zealand comprises frontdune, dune hollow and rear dune areas. On the front dunes are two communities: one on the seaward face of the dunes, and another on the landward face. Most of the dune hollow is occupied by a series of grassland communities, but there are areas of a distinctive cushion community, still largely native in its species composition. It is suggested that the cushion community is maintained against invasion by a switch, possibly involving sand grain size, soil organic content, water supply, wind and magnesium:calcium ratio. The coarse sandy/pebbly substrate, with its low organic content, causes water stress. The water stress permits only low vegetation, which exacerbates the low soil organic content. The low vegetation results in high wind, again favouring cushion species. The water regime has also allowed a buildup of Mg:Ca ratio, especially in the lower layers of the soil.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 12:36:31