The linked to paper concludes with: "Consequently, further research activities should focus on potential harm to stream organisms as proposed by Rosi-Marshall et al.
(2007)."

This link may give the reader some background concerning the reference to Rosi-Marshall's paper.

http://www.ask-force.org/web/Bt1/Waltz-GM-crops-Battlefield-Nature-Letters-2009.pdf

Here is a link that might be useful: background to Rosi-Marshall's paper