prvi kongres hrvatskih znanstvenika iz domovine i inozemstva - HATZ

PRVI KONGRES HRVATSKIH ZNANSTVENIKA IZ DOMOVINE I INOZEMSTVAZagreb - Vukovar, 15. - 19. studenog 2004.P - 22MULTI SEASONAL VARIABILITY OF SMALL COPEPODPOPULATIONS IN THE NORTHERN ADRIATIC SEA FROM 1993 TO1997Bojanić, D. & Kršinić, F.Institute of Oceanography and Fisheries, Dubrovnik, CroatiaSmall copepods were sampled at fixed western (SJ101 and SJ108) and eastern (SJ107)stations in the northern Adriatic Sea during eleven cruises in 1993, nine in 1994, eight,both in 1995 and 1996, seven in 1997. The samples were collected using a five litterNiskin bottle and the analysis was performed using a sedimentation method.Nauplii are the most numerous ( 70–75 % of the total number). The maximum value isnoted in August, 1997, on average 237.25 ind./dm 3 at the SJ107 station. Copepoditesand adult small Calanoida, order Cyclopoida and order Poecilostomatoida are almostequally represented (7–10 %). Genus Euterpina and Microsetella (order Harpacticoida)are not of great quantitative significance (0.5–1 %). They appear very sporadically, a littlemore numerous in autumn.A changes in the structure were analysed, as well as vertical and horizontal distribution ofsmall copepods and populations density during the appearance of mucous aggregates.Presented on:3rd International Zooplankton Production Symposium,Gijon, Spain, 20-23 May, 2003Principal Investigator : Dr.sc. Frano KršinićProject No. 000100124