<p>Four microcosms were connected according to one of three connectivity levels. Microcosms either remained unconnected (UN), were connected to an open square by tubing of 15 cm length (LP, LPP), or were connected to a closed square by tubing of 5 cm length (HP, HPP). Predatory copepods were introduced into one of the four microcosms on day 7 of the experiment. Copepods were either free to disperse to neighbouring basins (LPP, HPP) or prevented from dispersing by a 100 µm mesh in the middle of the connections (LP, HP).</p
