Surface and subsurface seawater temperature reconstruction.

Abstract. Differential dissolution affects the isotopic composition of different species of planktonic foraminifera in different ways. In the two species studied here in cores from Ontong Java Plateau, the less resistant species, Globigerinoides sacculifer, is more readily affected at a shallower depth than the more resistant species, Pulleniatina obliquiloculata (2.9 versus 3.4 km), but shows.

A Senior Essay presented to the faculty of the Department of Geology and Geophysics,. Globigerinoides ruber, Neogloboquadrina dutertrei, Globigerinoides sacculifer, Orbulina universa, Globorotalia truncatulinoides, Globigerinoides conglobatus and Sphaeroidinella dehiscens. The geochemistry of foraminiferal calcite records surface water conditions such as water temperature and productivity.

Sequences of Globigerinoides sacculifer (the G. trilobus lineage is represented in molecular data by the sequences of G. sacculifer) and of one genetic type of Orbulina universa were chosen as outgroup, based on earlier results from phylogenetic reconstructions (e.g. Darling et al., 1999, Aurahs et al., 2009b).

Globigerinoides ruber, Globigerinoides sacculifer, Globigerinita glutinata, and. Globorotalia menardii. The F2 assemblage has important contributions from. Globigerinita glutinata, Globigerina bulloides, and. Neogloboquadrina pachyderma (sinistral). The counting category with the highest scores in the F3 assemblage is. Globorotalia menardii.

Planktic foraminifer census data from the northwestern Gulf of Mexico By Harry J. Dowsett and Richard Z. Poore Open File Report 01-108 2000 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards. Any use of trade, product, or firm names is for descriptive purposes only and does not imply.

Globigerinoides sacculifer, G. ruber, G. obliquus and Globigerinita glutinata were conspic uously abundant in the 0-50m zone during the day (stations No. 1 and 2) and became abun dant in the 50-200m zone at night (station No. 4). Globorotalia menardii was abundant in the 50-200m zone but absent from the 0-50m zone at three stations (No. 6, 7.

Writing Handout E-7: Descriptive Essay Structuring a Descriptive Essay A descriptive essay simply describes something or someone by appealing to the reader’s senses: sight, sound, touch, smell and taste. Here are the basic steps to writing an effective descriptive essay: 1. Select a subject Observation. Save Paper; 5 Page; 1164 Words.

In this essay we’re going to take a close look at the oldest of the boundary outline analysis methods, classic radial Fourier analysis (RFA) which utilizes the equi-angular sequence-based sampling criterion. Fourier analysis and the Fourier series are fundamental mathematical concepts that lie at the nexus of calculus and number theory.

Measurements on T. sacculifer sampled in autumn 2012 revealed that test size, calcification and incidence of sac-like chambers continued to increase after full moon, and thus no relation to the synodic lunar reproduction cycle was recognized. During autumn 2012, outer bands of hurricane Sandy passed the Greater Antilles and likely affected the.

Abstract. As a consequence of their evolutionary diversity in form and function the protista of aquatic ecosystems exhibit a great variety of complex trophodynamic interactions, which confounds attempts to produce gross estimates of their in situ feeding rates. It is our view that studies of trophic behaviour at species and taxon level and quantification of community ingestion rates, are.

The comprehensive evaluation of all database sequences in the course of our study reveals that one Gen-Bank sequence has been mislabelled (Z69600; in GenBank stored as Globigerinoides sacculifer, but obtained from a G. conglobatus individual 6) and that the single sequence of Globorotalia crassaformis stored in GenBank (AY453134) is 100%.