Assessment of some agarophytes from the coastal areas of Iloilo, Philippines. I. Seasonal variations in the biomass of Gracilaria changii, Gracilaria manilaensis and Gracilariopsis bailinae (Gracilariales, Rhodophyta)
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Abstract
Monthly biomass (g dwt m-2) of Gracilaria changii, G. manilaensis and Gracilariopsis bailinae collected in four different coastal areas of Iloilo, Philippines showed significant differences. Gracilaria changii (3.0-32.4 gm-2) and G. manilaensis (8.9-35.7 gm-2) were present only for six and three months respectively during the dry season. Gracilariopsis bailinae was present year-round at both sites, however, its abundance was not uniform, being abundant during the wet season in Estancia (13.4-119.3 gm-2) and during the dry season in Zarraga (6.9-43.5 gm-2). Except for rainfall and level of phosphate, all environmental factors (temperature, salinity, pH, turbidity, NO2-N and NH2-N) showed insignificant relationship with the biomass of each species.
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Pondevida, H. B., & Hurtado-Ponce, A. Q. (1996). Assessment of some agarophytes from the coastal areas of Iloilo, Philippines. I. Seasonal variations in the biomass of Gracilaria changii, Gracilaria manilaensis and Gracilariopsis bailinae (Gracilariales, Rhodophyta). Botanica Marina , 39(2), 117-122. https://doi.org/10.1515/botm.1996.39.1-6.117
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