Search the NCBI's SRA database

I want to find the environmental abundance of a specific bacterium species in various environments across the globe. The easiest way would have been to BLAST the SRA database at NCBI for the 16S sequences of my bacterium, however SRA BLAST has limited functionality and works only for species with “long enough” sequences (unfortunately, my species is not among these). Another way would be to download the reads from all relevant SRA experiments and perform individual MOTHUR analysis on each one of them; however, seeing as there are over 400 relevant experiments, this would require much more time than I have.
So, is there a way to get the species abundance at each SRA experiment without spending a whole month on the project?
Many thanks in advance!