This post has put some strange smiley faces in - I don’t know where they’ve come from!
The first problem is [online] appears even when there is no URL in the reference.
The second problem is the journal publisher wants this ([online] URL):
Bissonette, J. A., and I. Storch. 2002. Fragmentation: is the message clear? Conservation Ecology 6(2):14. [online] URL: http://www.consecol.org/vol6/iss2/art14/.
You should alter your My Profile preferences, you are getting emoticon conversion!
Emoticon Type
This is the type of graphical emoticon to convert text smileys like or to.
Problem correction:
The first, one needs to insert “link adjacent” and between anything you don’t want to show up unless the URL field is occupied. Second you want to use accent graves around the URL that is “literal” and not to be replaced with the URL field. So the chosen fields (I edited the electronic Journal reference type) are: