Diel Fluctuations Of Larval Fish In The Lower Mississippi River
Larval fish were collected in the Lower Mississippi River at Sunnyside Revetment on 27-28 June 1978 to investigate diel fluctuations in diversity and ahundance and to determine whethersamples collected for 1-2 hours and from opposite sides of the hoat can he considered replicate samples for a time period. Numher of taxa and density differed significantly (P < 0.01) hetween time periods of the diel cycle. Numher of taxa and density were greatest at dusk. Twelve taxa were collected only in dusk, night, and dawn samples. Aplodinotus grunniens, Carpiodes spp. and c1upeids accounted for 95...
