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 [dataset]. 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):
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | Species | Species | Baumann, Hannes | |||
2 | Location | Location | Baumann, Hannes | port of landing | ||
3 | Identification | ID | Baumann, Hannes | of individual | ||
4 | Fish, curved fork length | Fish CFL | cm | Baumann, Hannes | ||
5 | DATE/TIME | Date/Time | Geocode | |||
6 | Number | No | Baumann, Hannes | of daily increments counted from the core (=primordium) to the edge of the transversal otolith section | ||
7 | Age | Age | days | Baumann, Hannes | estimated: No. of inc + 30 days | |
8 | Number | No | Baumann, Hannes | row of each ablation spot going from the core (row = 1) to the edge | ||
9 | Replicate | Repl | Baumann, Hannes | replicate 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 | ||
10 | Distance | Distance | µm | Baumann, Hannes | from core | |
11 | Age | Age | days | Baumann, Hannes | mid age | |
12 | Age | Age | days | Baumann, Hannes | negative range | |
13 | Age | Age | days | Baumann, Hannes | positive range | |
14 | Time in days | Time | days | Baumann, Hannes | day prior to catch of each ablation spot (=Mid age - Age) | |
15 | Date | Date | Baumann, Hannes | date when the mid increment of each ablation spot was formed (= Sampling Date - Age + Mid age) | ||
16 | Calcium | Ca | % | Baumann, Hannes | concentration of each ablation spot relative to the calcium standard | |
17 | Barium | Ba | mg/kg | Baumann, Hannes | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
18 | Otolith, Barium/Calcium ratio | Otolith Ba/Ca | µmol/mol | Baumann, Hannes | ||
19 | Ratio | Ratio | Baumann, Hannes | Ba/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper) | ||
20 | Cobalt | Co | mg/kg | Baumann, Hannes | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
21 | Otolith, Cobalt/Calcium ratio | Otolith Co/Ca | µmol/mol | Baumann, Hannes | ||
22 | Ratio | Ratio | Baumann, Hannes | Co/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper) | ||
23 | Copper | Cu | mg/kg | Baumann, Hannes | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
24 | Otolith, Copper/Calcium ratio | Otolith Cu/Ca | µmol/mol | Baumann, Hannes | ||
25 | Ratio | Ratio | Baumann, Hannes | Cu/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper) | ||
26 | Lithium | Li | mg/kg | Baumann, Hannes | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
27 | Otolith, Lithium/Calcium ratio | Otolith Li/Ca | µmol/mol | Baumann, Hannes | ||
28 | Ratio | Ratio | Baumann, Hannes | Li/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper) | ||
29 | Magnesium | Mg2+ | mg/kg | Baumann, Hannes | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
30 | Otolith, Magnesium/Calcium ratio | Otolith Mg/Ca | µmol/mol | Baumann, Hannes | ||
31 | Ratio | Ratio | Baumann, Hannes | Mg/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper) | ||
32 | Manganese | Mn | mg/kg | Baumann, Hannes | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
33 | Otolith, Manganese/Calcium ratio | Otolith Mn/Ca | µmol/mol | Baumann, Hannes | ||
34 | Ratio | Ratio | Baumann, Hannes | Mn/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper) | ||
35 | Strontium | Sr | mg/kg | Baumann, Hannes | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
36 | Otolith, Strontium/Calcium ratio | Otolith Sr/Ca | mmol/mol | Baumann, Hannes | ||
37 | Ratio | Ratio | Baumann, Hannes | Sr/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper) | ||
38 | Zinc | Zn | mg/kg | Baumann, Hannes | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
39 | Otolith, Zinc/Calcium ratio | Otolith Zn/Ca | µmol/mol | Baumann, Hannes | ||
40 | Ratio | Ratio | Baumann, Hannes | Zn/Ca standardized to zero mean and unit variation separately for each individual (see formula in the paper) | ||
41 | Observation | Obs | Baumann, Hannes | 1 = an 'entry signal' based on the increase in Ba, Co, Cu, and Mg was detected; 0 = no signal detected |
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