Dataset: Multiple Opening and Closing Net Environmental Sampling System (MOCNESS) water filtering volumes from 2018 and 2019 taken in the Northern California Current waters.

Final no updates expectedDOI: 10.26008/1912/bco-dmo.783036.2Version 2 (2023-02-16)Dataset Type:Cruise Results

Principal Investigator: Robert K. Cowen (Oregon State University)

Co-Principal Investigator: Su Sponaugle (Oregon State University)

Co-Principal Investigator: Kelly Rakow Sutherland (University of Oregon)

Contact: Kelsey Swieca (Oregon State University)

BCO-DMO Data Manager: Karen Soenen (Woods Hole Oceanographic Institution)


Project: Collaborative Research: Mesozooplankton food webs in intermittent upwelling systems: An overlooked link in a productive ocean (MEZCAL)


Abstract

Multiple Opening and Closing Net Environmental Sampling System (MOCNESS) water filtering volumes from 2018 and 2019 taken in the Northern California Current waters sampled aboard the R/V Sikuliaq, R/V Sally Ride and R/V Atlantis.

Sampling happend along two transects in winter and in summer 2018 and 2019. One transect was off of Trinidad Head, CA and the other Newport, OR (See Figure in Supplemental Docs). Each transect consisted of five target stations during the day and at night with replicate tows at each station. However, this sampling design was often modified at sea. Please refer to the dataset for completed stations.

To sample a range of zooplankton simultaneously, a coupled Multiple Opening and Closing Net Environmental Sampling System (MOCNESS) consisting of a 4m2 net fitted with 1 mm mesh and a 1 m2 net with 150 μm mesh was used (Guigand et al. 2005). The former is referred to as the Moc4 and the latter the Moc1. The Moc4 and Moc1 each have 5 nets (numbered 0-4) to sample discrete depths. Please see above for depth descriptions. All tows were sent to a target depth of 100 m.

 


Related Datasets

IsReferencedBy

Dataset: Larval fish identifications and concentrations
Cowen, R. K., Sponaugle, S., Sutherland, K. R., Swieca, K. (2023) Larval fish identifications and concentration (individuals per 1000m3) estimates for all day samples. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-02-01 doi:10.26008/1912/bco-dmo.888753.1
IsReferencedBy

Dataset: Length measurements
Relationship Description: Standard length measurements of northern anchovy (Engraulis mordax)of MOCNESS samples.
Cowen, R. K., Sponaugle, S., Sutherland, K. R., Swieca, K. (2023) Standard length measurements of a representative subset of northern anchovy (Engraulis mordax) and Stenobrachius leucopsarus collected with MOCNESS during winter and summer sampling in 2019 aboard R/V Sikuliaq, R/V Sally Ride and R/V Atlantis. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-01-10 doi:10.26008/1912/bco-dmo.867668.1
IsSourceOf

Dataset: Pyrosomes - MOCNESS
Relationship Description: Used to calculated the MOCNESS filtered volumes.
Sutherland, K. R., Cowen, R. K., Sponaugle, S., Lyle, J. (2022) Pyrosome (Pyrosoma atlanticum) samples from MOCNESS tows in the Northern California Current. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-12-10 doi:10.26008/1912/bco-dmo.866663.1

Related Publications

Methods

Guigand, C. M., Cowen, R. K., Llopiz, J. K., & Richardson, D. E. (2005). A Coupled Asymmetrical Multiple Opening Closing Net with Environmental Sampling System. Marine Technology Society Journal, 39(2), 22–24. doi:10.4031/002533205787444042