Suarez,-E.; Gasca,-R.  (Diurnal variation of the zooplankton 
	associated to Thalassia testudinum  seagrasses in a reef 
	lagoon at the Mexican Caribbean.).  UNIV.-CIENC. 1990. 
	vol. 7, no. 13, pp. 57-64.

A reef lagoon off Puerto Morelos, Quintana Roo, Mexico, was 
studied. A definite migratory pattern was observed in 
different groups along a day-cycle; these patterns seem to be 
related to the trophic behaviour of the different taxa of 
this community. A total of 21 different taxa were found. The 
most abundant species were the amphipods followed by 
planktonic copepods.