The lowest reaches of a large-scale basin could be the discharge area of local, intermediate and regional groundwater flow systems with different travel distances and travel times.
Discharge cells comprehend terminations of local, intermediate and regional flow systems, identified on the basis of spring density patterns, infiltration depth estimates based on 87Sr/86Sr data, and spatial distributions of groundwater pH and natural mineralization.
The core of this approach is to use the critical residence times defined by the late-time peaks of residence time distributions (RTDs) to divide the groundwater flow field into local, intermediate and regional systems as described by Tóth (1963).
The spatial and vertical variations of isotopic signature of groundwater reveal two distinct flow patterns in the aquifer system: (i) local flow (above c. 80 mbgl) throughout the study area, and (ii) intermediate and regional flow (below c. 80 mbgl), where water recharges aquifers through large-scale lateral flow as well as vertical infiltration.
They differ, however, with body size patterns of Mexican bat assemblages where the frequency distribution of body sizes was right-skewed at local, intermediate and regional scale [67].
It uses a scoring system to weight and sum each set of indicators within pollution burden and population characteristics components by taking data spatially processed at the local, intermediate and regional scale in account.
But they also include plant species economically important at a regional level with both intermediate and advanced levels of domestication such as species of Agave, Opuntia, Leucaena, columnar cacti, Chenopodium and Amaranthus.
In autos, auto parts, appliances, and machinery, the US imports and exports both intermediate and final goods to Canada and Mexico.
The program has established 3 RDCs to provide intermediate warehousing and regional distribution for 11 other PEPFAR-supported countries in sub-Saharan Africa.
There was evidence that interspecific competition influenced body size at local and intermediate regional scales, and wing morphology and echolocation characters of ensembles and functional foraging groups with high species richness and abundance.
