Oceanographic variability and copepod traits in two coastal ecosystems in the Southeast Pacific

Temperature, salinity, and pH, along with copepod traits were measured inter-daily (i.e., on average each 4 days) in an upwelling and temperate estuary in the coastal Southeast Pacific. The purpose of the study was to evaluate the phenotypic plasticity of local copepod populations to natural extreme low pH conditions. Temperature and salinity were measured with CTD (Ocean Seven 305 Plus in the estuary system, and SeaBird SBE19 Plus in the upwelling location). Samples for pH measurements were collected with an oceanographic bottle. pH was measured potentiometrically, and calibrated with Tris buffer at 25 °C. Adult females of the copepod species Acartia tonsa (Copepoda, Calanoidea) were sampled with a WP2 plankton net. Cephalothorax length was measured under a stereomicroscope. Egg production was estimated individually over 24 h incubation.

Further information on POC method: Food concentration was determined as chlorophyll-a (Chl, µg Chl L-1) concentration, and then Chl concentration was converted to carbon units by using a Chl:C ratio=120, according to Vargas and González (2004), for the same study area. Triplicate samples were filtered onto a GF/F filter. Chl was extracted for 24 h in 90% acetone v/v and measured in a TD Turner fluorometer (Strickland and Parsons, 1972).

DOI https://doi.org/10.1594/PANGAEA.962723
PID https://hdl.handle.net/10013/epic.46454.d001
Related Identifier References https://doi.org/10.3389/fmars.2023.1221132
Related Identifier References https://doi.org/10.3354/ame034151
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.962723
Creator Aguilera, Victor M ORCID logo; Mesas, Andres
Publisher PANGAEA
Publication Year 2023
Funding Reference Millennium Institute of Oceanography https://doi.org/10.13039/501100016975 Crossref Funder ID ICN12_019 ; Ministry of education, Chile https://doi.org/10.13039/501100002847 Crossref Funder ID 11130495 FONDECYT
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 1914 data points
Discipline Chemistry; Computer Science, Electrical and System Engineering; Engineering Sciences; Microsystems; Natural Sciences; Systems Engineering
Spatial Coverage (-73.412W, -39.798S, -70.622E, -23.456N); Southeast Pacific
Temporal Coverage Begin 2010-12-12T10:00:00Z
Temporal Coverage End 2015-12-10T10:30:00Z