Aim Few bird extinctions on oceanic island have been attributed to competition with non-native species, even though it might be an overlooked driver of biodiversity loss. We evaluate the potential between native and identifying species characteristics that enhance may promote future extinctions. Location Seventy-three (>100 km2) islands worldwide. Methods compiled a list for each used single-tr...

forests are an important economic source for human and have key role in nutrient cycle, hydrology and ecosystem performance, any interference in this vital ecosystem causes to damage to forests. mechanical logging and road construction in forest areas have led to much soil compaction. soil physical and chemical properties were studied in parts of road and non-road in the darabkola forest of ira...

METHOD OF TESTING. For all, except a few who are specially mentioned, this was the Mantoux test. Owing to the impossibility of recalling all the clinic attenders for a second test, the Mantoux test using .01 mgm. of Old Tuberculin (O.T., 0.1 ml. in 1/10,000 dilution) had to be accepted in these. All others were tested with 1 mgm. O.T. (0.1 ml. in 1/100 dilution). Tuberculin jelly (3 per cent. O...