Hopcroft, R. R. MBARI, hopcroft@mbari.org
Lombard, D. R. MBARI,
Chavez, F. P. MBARI, chfr@mbari.org

The seasonal abundance and biomass of the copepod community in the upper 200 m off central California has been assessed from nearshore inside of Monterey Bay to 200 km offshore using 64, 200 and 500 um meshed nets. Generally, the copepod community is composed of up to 50% nauplii, with the remainder divided predominately between species in the genera Clausocalanus, Oithona, and Oncaea. Numerically, less than 1% of copepod community is collected by 500 um Bongo nets, while only 5% is captured by 200 um ring nets. Large copepods are, however, important in terms of biomass, with 50% of the community collected by the 500 um nets and 75% collected by the 200 um nets. Nonetheless, because smaller species of copepods tend to grow and reproduce faster than larger species, they are of still of much greater importance in term of secondary production than implied by their biomass. Details of the inshore/offshore and seasonal variations in the copepod community composition, biomass and size spectra will be discussed.
Day: Tuesday, Feb. 2
Time: 04:15 - 04:30pm
Location: Hilton of Santa Fe
Code: SS23TU0415H