A forty-seven year comparison of the vascular flora at three abandoned rice fields, Georgetown, South Carolina, U.S.A.
DOI:
https://doi.org/10.17348/jbrit.v15.i1.1063Palabras clave:
vascular flora, abandoned rice fields, parsimony analysis, Georgetown, South CarolinaResumen
La flora vascular identificada entre 1968–1969 en tres campos de arroz del estuario de la bahía de Winyah en el Instituto Bell W. Baruch de Biología Marina e Investigación Costera, condado de Georgetown, Carolina del Sur, abandonados en 1915, se comparó con la flora vascular presente en 1987–1991 y 2013–2015. Veinte especies de plantas vasculares fueron identificadas en 1968–1969 y 22 en 2013–2015 en el pantano más salino, el Campo de Arroz de Mil Acres. Cuarenta y siete taxones fueron reportados en Airport Marsh en 1968–1969 y veintisiete en 2013–2015. Cincuenta y seis taxones fueron reportados en Alderly en 1968–1969 con 41 identificados en 2013–2015. Se utilizó un algoritmo de parsimonia para evaluar la distribución y co-ocurrencia de especies de marismas salobres vasculares en estos campos muestreados en los tres intervalos. Hubo una reducción en la flora en los dos sitios menos salinos, Alderly y Airport Marsh, de 1968–69 a 1987–91 y 2013–2015. Tres factores—aumento del nivel del mar, aumento en la salinidad del agua, y la invasión de Phragmites australis—pueden explicar este cambio. También hubo un cambio en la flora en el Campo de Arroz de Mil Acres de 1967–1969 a 1987–1991 y 2013–2015 después de que el pantano fue salvajemente azotado por el huracán Hugo en 1989. La invasión por Phragmites australis no nativo en los sitios estudiados y el aumento de la salinidad del agua explican mejor la reducción de las especies de plantas vasculares en Airport Marsh y Alderly durante el período de recolección de cuarenta y siete años.
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