Along much of the length of this fault, the metamorphic rocks in the hanging wall (located above the fault) display a pattern of inverted isograds; i.e., the rocks that reached the highest temperatures of metamorphism overlie rocks that record lower temperatures, implying that metamorphic temperatures decreased with depth to the fault.
Kd decreased with depth to an extent greater than could be predicted on the basis of the only 10-fold decrease in natural solid organic matter (SOM) content and despite significantly higher specific surface area in the lower horizons.
These results suggest that even though abundance of Mega- and Macrofauna decreases exponentially with depth, a large number of species can be found at great depths, while the abundance of nematodes decreases with depth to a lesser extent, but this is associated with a stronger reduction in species richness.
In general, the abundance of meiobenthos in the deep sea has been found to decrease with depth owing to a decrease in POM flux in addition to sedimentary factors such as calcium carbonate content and sorting (see Soltwedel, 2000).
Due to the sensitivity decrease with depth inherent to these methods and the absence of focus tracking, these methods may not achieve optimal sensitivity in depth.
We hypothesized that microbial biomass and enzyme activities are driven by aeration and by peat quality and therefore (i) they increase from hollows (water saturated/anaerobic) through lawns (intermediate) to hummocks (aerobic) in the top peat and ii) they decrease with depth due to increasing distance from fresh plant-derived inputs and lower oxygen availability.
Relative amounts of OM and opal decrease with depth due to decomposition and dissolution; carbonates and lithogenic material contribute about the same amount to total mass, or increase slightly, throughout the water column.
Figure 11c shows that P-wave velocities decrease with depth down to the base of the Trifels unit at a depth of ~ 1350 m.
From the resulting model temperature information may be extracted for different depths down to 5000 m below sea level, whereby the reliability and spatial coverage of the measurements decrease with depth due to the decreasing data density and increasing measuring uncertainties.
Spores do not depend on available organic matter to survive, and this finding may explain why the numbers of B. cereus sl did not decrease with depth similar to total bacteria.
