Rates of egg production, grazing and mortatlity of Calanus finmarchicus measured experimentally in the North Atlantic during the Maria S. Merian cruise MSM26, spring 2013 ...

• Main Authors: Harmer, Rachel A, Lindeque, Pennie K
• Format: Dataset
• Language: English
• Published: PANGAEA 2013
• Subjects: Treatment duration; Treatment temperature; Time in hours; Calanus finmarchicus, female; Calanus finmarchicus, egg production rate per female; Calanus finmarchicus, egg production rate, standard deviation; Calanus finmarchicus, fecal pellet production rate per female; Calanus finmarchicus, fecal pellet production rate, standard deviation; WP-2 towed closing plankton net; MSM26; Maria S. Merian; Basin Scale Analysis, Synthesis and Integration EURO-BASIN; Calanus finmarchicus; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.819657; https://doi.pangaea.de/10.1594/PANGAEA.819657

An incubation experiment at five different temperatures was used to assess the potential for adaptation of Calanus finmarchicus to future warming of the ocean. During a short term (3 h) and long term (6 day) exposure of individual females to a gradient of temperature stress, egg production and fecal pellet production were monitored to indicate secondary production and grazing rates. A longer term (10 day) exposure to elevated temperatures followed by a return to ambient sea temperatures was used to assess the potential recovery of individuals exposed to temperature stress. Females were picked out from WP2 net samples and acclimatised in 2 L bottles of GFF filtered seawater with Thalassiosira weissflogii as prey for >48 h at ambient SST. Experimental bottles were filled with filtered seawater (GFF filtered from non-toxic seawater supply) and acclimated to experimental temperature overnight (0, 5, 10, 15 and 20 °C). Individual females were transferred into bottles using forceps and the bottles were ...