Correlation between Binary (presence/absence)and Continuous Data

Thanks for the help in advance!

I have a binary variable (1 or 0) that describes if a species is present or absent in an area.

I also have a list of various crop acreages (continuous variable). I want to correlate the two to see if a certain crops acreage is correlated to the species being present or not.

Is Pearson Correlation the correct way to go about this? I have already done logistic regression to find the correct/significant variables to correlate. I am using Systat 13 for my stats program.

Thanks again!