Aguilera, Victor M; Mesas, Andres (2023): Oceanographic variability and copepod traits in two coastal ecosystems in the Southeast Pacific [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.962723
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Abstract:
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.
Keyword(s):
Related to:
Aguilera, Victor M (in review): Local scale extreme low pH conditions and genetic differences shape phenotypic variation in a broad dispersal copepod species. Frontiers in Marine Science
References:
Pierrot, Denis; Epitalon, Jean-Marie; Orr, James C; Lewis, E; Wallace, D W R (2021): MS Excel program developed for CO2 system calculations – version 3.0. GitHub repository, https://github.com/dpierrot/co2sys_xl
Strickland, J D H; Parsons, T R (1972): A practical handbook of seawater analysis. Fisheries Research Board of Canada, 167 pp, hdl:10013/epic.46454.d001
Vargas, Cristian A; González, Humberto E (2004): Plankton community structure and carbon cycling in a coastal upwelling system. I. Bacteria, microprotozoans and phytoplankton in the diet of copepods and appendicularians. Aquatic Microbial Ecology, 34, 151-164, https://doi.org/10.3354/ame034151
Funding:
Coverage:
Median Latitude: -31.627289 * Median Longitude: -72.016927 * South-bound Latitude: -39.798428 * West-bound Longitude: -73.412259 * North-bound Latitude: -23.456150 * East-bound Longitude: -70.621594
Date/Time Start: 2010-12-12T10:00:00 * Date/Time End: 2015-12-10T10:30:00
Minimum DEPTH, water: 7 m * Maximum DEPTH, water: 10 m
Event(s):
Antofagasta_upw * Latitude: -23.456150 * Longitude: -70.621594 * Date/Time Start: 2015-01-22T10:30:00 * Date/Time End: 2015-12-10T10:30:00 * Elevation: -35.0 m * Location: Southeast Pacific * Method/Device: CTD/Rosette (CTD-RO)
Valdivia_est * Latitude: -39.798428 * Longitude: -73.412259 * Date/Time Start: 2010-12-12T10:00:00 * Date/Time End: 2012-02-13T10:00:00 * Elevation: -12.0 m * Location: Southeast Pacific * Method/Device: CTD/Rosette (CTD-RO)
Comment:
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).
Parameter(s):
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1914 data points