While there are a number of key challenges associated with synthesis of earthworm data on a global scale (data limitations, taxonomic inconsistencies, logistical issues), the wide range of questions involving global data listed by researchers, and their willingness to contribute their own data, suggests there is strong interest in developing a comprehensive global database on earthworms.
Although seismic tomography is widely used to image earth structure on local to global scales, the above limitations mean that we cannot expect the same high-quality results from microseismic monitoring data (Bardainne and Gaucher 2010).
Few studies have addressed questions of phylogeographic structure and dispersal limitation in bacteria on a truly global scale in discontinuous but globally common habitats, and yet such studies would provide a realistic insight into the degree of dispersal limitation typically encountered by bacteria.
Simulated biomass increases are, however, not of a magnitude that would likely lead to general nutrient limitation on the global scale, though regional effects are to be expected.
This will permit us, on one hand, to emphasize the good reproduction of the results given by the method on a global scale and, on the other hand, some limitations to the local scale where possible explanations are proposed.
Analysis of latitudinal trends, confined by data limitations, was equivocal on a global scale.
These limitations prevented an in-depth global scale analysis as originally intended, instead resulting in a restricted comparison of point species richness of limited regions.
The Expanded Disability Status Scale (EDSS) is a global scale developed to evaluate disability due to neurologic limitations in people with MS [ 30].
CDR methods have biogeochemical and technological limitations to their potential on a global scale.
Note that the big-leaf representation of the canopy and the neglect of nutrient limitation are also features of many global scale models (e.g. Prentice et al. 2011), so their apparent consistency with leaf-scale observations of decreasing Vcmax and/or Jmax under eCO2 may not be a good indication for the correct representation of acclimation to eCO2.
He returned to such thinking after World War II, but his brief declaration of methodological limitations illuminated for historical study the antinomy of the global scale.
