Performance of seagrass transplants in Negros Island, Central Philippines and its implications in mitigating degraded shallow coastal areas
1993
Calumpong, H.P. | Phillips, R.C. | Menez, E.G. | Estacion, J.S. | de Leon, R.O.D. | Alava, M.N.R. (Silliman Univ., Dumaguete City 6200 (Philippines). Marine Lab.)
Reciprocal seagrass transplants were installed at three sites along the eastern coast of Negros Is., Philippines. All transplants were made using sediment-core planting units (sods). Transplants were made in the intertidal and subtidal zones at two of the sites. A third site, El Oriente, comprised a common garden with all species from the other two sites. Transplant success in all of these sites varied, depending on such factors as predation, siltation, wave/currents and substrate type. In terms of transplants survival, planting units placed in the common garden site (El Oriente) showed 100 percent survival after five months in the field (Aug 1991-Dec 1991). Lowest survival was observed in Bais Bay subtidal, where units encountered heavy predation by sea urchins and siltation after flooding. Areal unit expansion was also variable, with increasing expansion shown by units from Bantayan transplanted to El Oriente. Sods from Bais Bay subtidal decreased in size at all other sites. Among the species transplanted, Cymodocea serrulata seemed to show fastest increase in shoot density
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