This dataset contains measurements of brood sizes of the euphausiids Euphausia pacifica and Thysanoessa spinifera. These data were collected as part of the RISE project off Oregon and Washington, USA, between 2004-2006.
Each line of data in each spreadsheet is a measurement of one individual animal and includes cruise name, station name, date, latitude, longitude, and water depth.
These data were collected as part of the RISE project to look at vital rates of zooplankton off of Washington and address the hypothesis that higher observed zooplankton biomass in this area could be explained to some degree by higher growth and/or egg production rates of the zooplankton.
Data parameter(s):
Euphausiid brood sizes are in units of number of eggs per brood per female.
Information on data precision, observation methodology, gear identification, analysis methodology, and data processing is contained in the following citations:
Shaw, T. L. Feinberg and W. Peterson. Protocols for measuring molting rate and egg production of live euphausiids. http://www.pices.int/projects/Euphasiid/euphasiid.aspx
Feinberg, L.R., C.T. Shaw, and W.T. Peterson. 2007. Long-term laboratory observations of Euphausia pacifica fecundity: comparison of two geographic regions. Mar. Ecol. Prog. Ser. 341:141-152.
Shaw, C.T., L.R. Feinberg, and W.T. Peterson. 2009. Interannual variations in vital rates of copepods and euphausiids during the RISE study 2004 - 2006. Journal of Geophysical Research, in press.