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Bongo tows were made to a depth of about 50m (based on wire out and wire angle). As the tows were done at night, that includes essentially the entire population of these vertically migrating salps. Information on the depth distribution of the species is included in: Madin et al. (2006) (pdf)
Abundance, size, fecundity of Salpa aspera in the Slope Waters off northeastern USA from R/V Oceanus OC379 and\u00a0OC381 in the slope waters off NJ, DE, MD from June-Sept. 2002
\nAssociated datasets: salp_chloro
The sizes for the aggregates are for individual animals in the chains. Chains were broken up during collection. Measurements of the aggregates do not include the \"tips\" but are for oral-aboral length only. The solitary forms are basically cylindrical so the length measurements are for the totals.
\n'premature': These embryos were released as an artifact associated with net collection.
\nOC-381: 'live biovolume of counted/measured aliquot': for the first few tows this represents the aliquot, ml of the total that was enumerated. Beginning with Tow 7, all aliquots were 250 ml . If the total was less than that, the entire sample was counted.