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Baumann, Hannes; Wells, R J D; Rooker, Jay R; Baumann, Zofia A; Madigan, Daniel J; Dewar, Heidi; Snodgrass, Owyn E; Fisher, Nicholas S (2015): Otolith microstructure and trace elemental concentrations in juvenile Pacific bluefin tuna (Thunnus orientalis) caught off of Southern California in 2012. PANGAEA, https://doi.org/10.1594/PANGAEA.844813, Supplement to: Baumann, Hannes; Wells, R J D; Rooker, Jay R; Zhang, Saijin; Baumann, Zofia A; Madigan, Daniel J; Dewar, Heidi; Snodgrass, Owyn E; Fisher, Nicholas S (2015): Combining otolith microstructure and trace elemental analyses to infer the arrival of juvenile Pacific bluefin tuna in the California current ecosystem. ICES Journal of Marine Science, 72(7), 2128-2138, https://doi.org/10.1093/icesjms/fsv062

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Abstract:
We combined longitudinal analyses of otolith microstructure and trace elemental composition in ~ age 1-2 Pacific bluefin tuna (PBT, n = 24) for inferring the arrival of individuals in the California Current Large Marine Ecosystem (CCLME). Element:Ca ratios in transverse otolith sections (9-12 rows, triplicate ablations from coreprimordium to edge, ø50 µm) were quantified for eight elements: Li, Mg, Mn, Co, Cu, Zn, Sr, and Ba, which was followed by microstructure analysis to provide age estimates corresponding to each ablation spot. Age estimates from otoliths ranged from 328 to 498 days post hatch. The combined elemental signatures of four elements (Ba, Mg, Co, Cu) showed a significant increase at the otolith edge in approximately half of the individuals (30-60 days prior to catch). Given the different oceanographic properties of oligotrophic open Pacific vs. high nutrient, upwelling CCLME waters, this signal is consistent with the entry of the fish into the CCLME, which was estimated to occur primarily in July after a transoceanic migration of ~1.5-2.0 months.
Other version:
Link to original table format of Baumann et al. (2015). hdl:10013/epic.45256.d001
Coverage:
Median Latitude: 34.550000 * Median Longitude: -120.450000 * South-bound Latitude: 32.000000 * West-bound Longitude: -123.300000 * North-bound Latitude: 37.100000 * East-bound Longitude: -117.600000
Date/Time Start: 2012-08-04T00:00:00 * Date/Time End: 2012-09-25T00:00:00
Event(s):
California_current * Latitude Start: 37.100000 * Longitude Start: -123.300000 * Latitude End: 32.000000 * Longitude End: -117.600000 * Location: California Current * Device: Net (NET)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1SpeciesSpeciesBaumann, Hannes
2LocationLocationBaumann, Hannesport of landing
3IdentificationIDBaumann, Hannesof individual
4Fish, curved fork lengthFish CFLcmBaumann, Hannes
5DATE/TIMEDate/TimeGeocode
6NumberNoBaumann, Hannesof daily increments counted from the core (=primordium) to the edge of the transversal otolith section
7AgeAgedaysBaumann, Hannesestimated: No. of inc + 30 days
8NumberNoBaumann, Hannesrow of each ablation spot going from the core (row = 1) to the edge
9ReplicateReplicateBaumann, Hannesreplicate ablation spot within each ablation row. Rows 1-5 only had a single ablation, whereas rows 6 to edge had 3 replicate ablation spots. Terminal rows sometimes only had 2 ablation spots
10DistanceDistanceµmBaumann, Hannesfrom core
11AgeAgedaysBaumann, Hannesmid age
12AgeAgedaysBaumann, Hannesnegative range
13AgeAgedaysBaumann, Hannespositive range
14Time in daysTimedaysBaumann, Hannesday prior to catch of each ablation spot (=Mid age - Age)
15DateDateBaumann, Hannesdate when the mid increment of each ablation spot was formed (= Sampling Date - Age + Mid age)
16CalciumCa%Baumann, Hannesconcentration of each ablation spot relative to the calcium standard
17BariumBamg/kgBaumann, HannesICP-MS, Inductively coupled plasma - mass spectrometry
18Otolith, Barium/Calcium ratioOtolith Ba/Caµmol/molBaumann, Hannes
19RatioRatioBaumann, HannesBa/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper)
20CobaltComg/kgBaumann, HannesICP-MS, Inductively coupled plasma - mass spectrometry
21Otolith, Cobalt/Calcium ratioOtolith Co/Caµmol/molBaumann, Hannes
22RatioRatioBaumann, HannesCo/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper)
23CopperCumg/kgBaumann, HannesICP-MS, Inductively coupled plasma - mass spectrometry
24Otolith, Copper/Calcium ratioOtolith Cu/Caµmol/molBaumann, Hannes
25RatioRatioBaumann, HannesCu/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper)
26LithiumLimg/kgBaumann, HannesICP-MS, Inductively coupled plasma - mass spectrometry
27Otolith, Lithium/Calcium ratioOtolith Li/Caµmol/molBaumann, Hannes
28RatioRatioBaumann, HannesLi/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper)
29MagnesiumMg2+mg/kgBaumann, HannesICP-MS, Inductively coupled plasma - mass spectrometry
30Otolith, Magnesium/Calcium ratioOtolith Mg/Caµmol/molBaumann, Hannes
31RatioRatioBaumann, HannesMg/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper)
32ManganeseMnmg/kgBaumann, HannesICP-MS, Inductively coupled plasma - mass spectrometry
33Otolith, Manganese/Calcium ratioOtolith Mn/Caµmol/molBaumann, Hannes
34RatioRatioBaumann, HannesMn/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper)
35StrontiumSrmg/kgBaumann, HannesICP-MS, Inductively coupled plasma - mass spectrometry
36Otolith, Strontium/Calcium ratioOtolith Sr/Cammol/molBaumann, Hannes
37RatioRatioBaumann, HannesSr/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper)
38ZincZnmg/kgBaumann, HannesICP-MS, Inductively coupled plasma - mass spectrometry
39Otolith, Zinc/Calcium ratioOtolith Zn/Caµmol/molBaumann, Hannes
40RatioRatioBaumann, HannesZn/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper)
41ObservationObsBaumann, Hannes1 = an 'entry signal' based on the increase in Ba, Co, Cu, and Mg was detected; 0 = no signal detected
Size:
33920 data points

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