Vertical Copepod Assemblages (0-2300 m) off Southern Brazil

• Main Authors: Cristina De Oliveira Dias, Adriana Valente De Araujo, Rodolfo Paranhos, Sérgio Luiz Costa, Sérgio Luiz, Costa Bonecker
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2009
• Subjects: Antarc*; Antarctica; NADW; North Atlantic Deep Water; North Atlantic; Copepods
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.651.5775; http://zoolstud.sinica.edu.tw/Journals/49.2/230.pdf

structure of copepod assemblages in the region of the Campos Basin was studied for a 1 yr period. Zooplankton samples were obtained in the 2002 wet season and 2003 dry season, by stratified vertical hauls in 4 previously identified water masses: tropical water (TW), South Atlantic central water (SACW), intermediate Antarctica water (IAW), and North Atlantic deep water (NADW). Temperature and salinity were determined. The copepod mean density did not significantly differ (p < 0.05) between the northern and southern stations in the 2 seasons, but significantly differed among the water masses, and in each water mass in the 2 seasons, except for the SACW. The highest mean density was found in the TW, and the lowest in the NADW. Eighty-nine taxa of copepods, with 70 generally distributed species and 19 species exclusive to 1 or another water mass were recorded in the 4 water masses. The copepod assemblages of the Campos Basin showed tropical characteristics, and were numerically dominated by epipelagic species: Clausocalanus furcatus, Farranula gracilis, and Oncaea venusta