With this information we identified a potential risk from pesticide runoff in a high proportion of streams.
However, Madagascan rainforests show a higher proportion of stream-breeding frog species than other tropical amphibian communities which often contain many pond breeders.
The proportion of specific stream microhabitats (i.e. stream substrates) did not have a major impact on SR.
However, the headwater reaches of mapped 1st-4th order steams represent > 90% of all stream length in Coastal Plain North Carolina (Rheinhardt, unpublished data), most higher order stream reaches (> 4th order) are adequately buffered by forest (although not everywhere by mature forest), and the proportion of urban stream length is rather small in relation to rural stream length.
To avoid the accumulation of light hydrocarbon gases, a large proportion of this stream (99%%) returned to UDHDS unit by a compressor and the rest was sent to flare.
Indicator variables included in the assessment were: population density and change, road density, percent forest land-cover, forest patch density, landscape Shannon's Diversity Index, proportion of all streams with roads within 30 m, proportion of area that has agriculture on slopes >3%, proportion of all streams with adjacent agriculture, and proportion of all streams with adjacent forest cover.
In summary, the resource sufficiency in this study partly relies on the proportion of waste streams and partly on the increasing biogas yields.
Among the various stream orders, the proportion of first-order streams, constitute bulk of the total number of streams in all the watersheds, ranging from 68.89% (in Thuraiyur Kalathur watershed) to 82.05% (Kalungi watershed).
As can be seen, food waste accounts for a very large proportion of the MSW stream, ranging between 54 and 77 % depending on the city.
The first-order streams accounted for about 74% of the total number of streams, and based on Macka (2003), such a high proportion of first-order streams indicates the structural weakness present in the watershed dominantly in the form of fractures/lineaments.
The analysis of the proportion of lower order streams of the watersheds shows that Valaiyur, Belur, Kalungi, Solaimatti and Kallar watersheds are characteristic of steeper slopes and quicker water flow, whereas Nakkasalem, Maruvattur, Thuraiyur Kalathur and Talugai watersheds are less steeper with relatively lesser water flow velocity.
