| Intraspecific and interspecific morphologic variablity, and the microhabitat of Recent benthic foraminifera from the northern Gulf of Mexico are investigated. A morphometric analysis of B. albatrossi from 25 sediment-top samples shows a strong correlation between intraspecific morphologic variability and factors related to water-column properties. Test triangularity and dissolved oxygen concentration are inversely related. The change in test triangularity is related to an increase in the pore density. Test lobateness exhibits a progressive, inverse relationship to dissolved-oxygen concentration. Morphometric end members can be defined in B. albatrossi on the basis of test triangularity and lobateness which vary proportionally with either general water-mass composition, the position of water-mass boundaries or individual water-mass properties, such as dissolved oxygen, temperature, and salinity.;Intraspecific morphologic variability within an assemblage of benthic foraminifera is used to define biofacies (morphofacies) in the north-central Gulf of Mexico. Approximately 100 specimens were randomly selected from the ;The microhabitat of living benthic foraminifera from nine box cores recovered from the Mississippi Delta shelf and slope is investigated. Each box core was sub-sampled at 1 cm intervals to a sediment depth of 5 cm, 2 cm intervals to a depth of 10 cm and 5 cm intervals to a depth of 20 cm, and the sub-samples stained with Rose Bengal to identify living specimens. Stained specimens were selected from the... |
