WebThe northern region is dominated by Aulacoseira nyassensis throughout most core sequences. Variability in these assemblages appears to be controlled by Si:P ratios, Si … WebMalawi (Bootsma et al., 2003). Aulacoseira nyassensis (Fig. 2) is the most ubiquitous diatom in cores from the northern basin and comprises the majority of the diatom biomass measured for δ18O diatom. In addition to the diatom-based oxygen isotopes, we measured compound specific hydrogen isotope ratios as an alternative and complementary (to δ18O

Diatom evidence for the timing and causes of …

WebAulacoseira Thwaites 1848. Aulacoseira is a genus of diatoms in the family Aulacoseiraceae. Dead Aulacoseira form siliceous ooze s. Known occurrences, collected specimens and observations of Aulacoseira Thwaites 1848. View this species on GBIF. WebAulacoseira nyassensis var. victoriae (O. Müller) Simonsen was also present in small amounts, particularly in the Buvuma Channel and Napoleon Gulf cores. This genus was uncommon in the most ... fortran 2019

Taxonomy browser linkout page (Aulacoseira nyassensis)

WebIn recent decades, the planktonic diatom community in central Lake Victoria changed from dominance of Aulacoseira species (mainly African endemic A. agassizii, A. nyassensis) … WebJun 20, 1997 · Correspondence analysis ordination (CA) [which is similar to principal components analysis ()] of the diatom series summarizes Holocene limnological changes … WebA lakewide reorganization of diatom assemblages occurred around 7200 BP, when Aulacoseira nyassensis largely replaced A. granulata and after which rainfall and wind-driven mixing became more seasonally restricted. Pronounced reductions in offshore diatom deposition, from about 8300-5800 BP and after 3500 BP, may have been related to … dinner recipes using roll out pie crust