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Titolo:
REGENERATION OF SCIRPUS-AMERICANUS IN A TEXAS COASTAL MARSH FOLLOWINGLESSER SNOW GOOSE HERBIVORY
Autore:
MILLER DL; SMEINS FE; WEBB JW; LONGNECKER MT;
Indirizzi:
UNIV FLORIDA,DEPT WILDLIFE ECOL & CONSERVAT,5988 HIGHWAY 90,BLDG 4900,POB 3634 MILTON FL 32572
Titolo Testata:
Wetlands
fascicolo: 1, volume: 17, anno: 1997,
pagine: 31 - 42
SICI:
0277-5212(1997)17:1<31:ROSIAT>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
SALT-MARSH; GEESE; VEGETATION; PLANT; POPULATION; BAY;
Keywords:
OLNEY BULRUSH; SCIRPUS AMERICANUS; FIRE; PATCH DYNAMICS; SALINITY; VEGETATIVE REGROWTH; TEXAS COASTAL MARSH; DISTURBANCE INTENSITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
36
Recensione:
Indirizzi per estratti:
Citazione:
D.L. Miller et al., "REGENERATION OF SCIRPUS-AMERICANUS IN A TEXAS COASTAL MARSH FOLLOWINGLESSER SNOW GOOSE HERBIVORY", Wetlands, 17(1), 1997, pp. 31-42

Abstract

Interaction of herbivory by wintering lesser snow geese (Anser caerulescens caerulescens), environmental conditions, and burning were investigated in a mid-Texas coastal marsh dominated by Scirpus americanus (Olney bulrush). Goose grubbing and use of S. americanus rhizomes and roots initially produced a patchwork of denuded and vegetated areas on a recently burned area. Regrowth occurred by reestablishment of uprooted shoot complexes; regeneration from seed was not observed. Regrowth was dependent on intensity of use and post-herbivory environmental conditions. After three years of varying levels of goose use and environmental conditions, lowest foliar cover and standing crop occurred in areas with a high frequency and intensity of goose use followed by spring drought and high salinities. Greatest growth was associated with lowfrequency and intensity of use followed by normal spring freshwater inflows and low salinities. Burning did not significantly affect the response of S. americanus. Continued frequent and intense snow goose use, coupled with high salinity and extended periods with water levels below the marsh surface, can produce denuded mudflats subject to accelerated soil erosion. Management strategies to reduce the impact of thesecombined events could be implemented. Hydroperiod and salinity conditions should be routinely monitored, and goose populations should be temporally and spatially directed to reduce the potential for conversionof marsh to permanent mudflats.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 12:28:25