Showing papers by "Hector M. Guzman published in 1993"
TL;DR: Year after the spill, the increased number of injuries and associated reduction in colony size, and decreased size of gonads (eggs) on oiled reefs can reduce the number of reproductively viable colonies and gametes in coral populations, and ultimately reduce population survival.
107 citations
TL;DR: In this paper, the authors measured insoluble residue concentrations within colonies of four massive reef corals from seven localities along the Caribbean coast of Panama to determine if detrital sediments, incorporated within the skeletal lattice during growth, record changes in sedimentation over the past twenty years.
Abstract: Insoluble residue concentrations have been measured within colonies of four massive reef corals from seven localities along the Caribbean coast of Panama to determine if detrital sediments, incorporated within the skeletal lattice during growth, record changes in sedimentation over the past twenty years. Amounts of resuspended sediment have increased to varying degrees at the seven localities over the past decades in response to increased deforestation in nearby terrestrial habitats. Preliminary results of correlation and regression analyses reveal few consistent temporal trends in the insoluble residue concentration. Analyses of variance suggest that amounts of insoluble residues, however, differ among environments within species, but that no consistent pattern of variation exists among species. D. strigosa and P. astreoides possess high concentrations at protected localities, S. siderea at localities with high amounts of resuspended sediment, and M. annularis at the least turbid localities. Little correlation exists between insoluble residue concentration and growth band width within species at each locality. Only in two more efficient suspension feeders (S. siderea and D. strigosa) do weak negative correlations with growth band width exist overall.
19 citations