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Physical and biological drivers of zooplankton communities in the Chukchi Sea

  • Adam SpearEmail author
  • Janet Duffy-Anderson
  • David Kimmel
  • Jeffrey Napp
  • Jessica Randall
  • Phyllis Stabeno
Original Paper
  • 73 Downloads

Abstract

The physical environments of high-latitude systems are rapidly changing. For example, the Chukchi Sea has experienced increased water temperatures, advection from the Bering Sea, declines in sea-ice concentration, earlier spring ice retreat, and delayed fall ice formation. This physical restructuring is expected to impact ecosystem structure and function. In this study, a series of bio-oceanographic research surveys were conducted in the summers of 2010, 2011, and 2012 to characterize the physical environment and to examine the influence of physical forcing on zooplankton community distribution and abundance. Results revealed yearly advection from the Bering Sea influenced zooplankton community structure, but this influence became less apparent in the northeastern Chukchi due to changes in current speeds and patterns. Decreased advection and later ice retreat in colder years resulted in zooplankton communities that exhibited more diversity, had higher abundances of the lipid-rich copepod Calanus glacialis, and were less closely related to water masses advected from the south. These findings suggest more localized processes are influencing zooplankton community structure in the Chukchi Sea. Increased inflow of water into the Chukchi is predicted with increased warming in the Arctic and changes in food-web structure and function are likely to result.

Keywords

Zooplankton Chukchi Sea Advection Sea-ice Climate change 

Notes

Acknowledgements

The authors would like to thank Captian Atle Remme, F/V Alaskan Enterprise, Captian Fred Roman, F/V Mystery Bay, and Captain Kale Garcia, R/V Aquila, as well as all crewmembers. Special thanks also go to Catherine Berchok for her excellent leadership; Jeannette Gann and Esther Goldstein for taking the time to review the manuscript; Rebecca Woodgate for suggestions and sharing physical data; the Bering Strait mooring project; Sigrid Salo for help with ice data; Kathy Mier for data analysis tips; Polish Sorting Center for their hard work with zooplankton samples; and North Pacific Climate Regimes and Ecosystem Productivity (NPCREP) program for support. This research was part of the Chukchi Sea Acoustics, Oceanography and Zooplankton (CHAOZ) study that was funded by the Bureau of Ocean Energy Management (BOEM; Contract No. M09PG0016).

Compliance with ethical standards

Conflict of interest

The authors declare that there is no conflict of interest in presenting this information.

References

  1. Aagaard K, Carmack EC (1989) The role of sea-ice and other fresh water in the Arctic circulation. J Geophys Res Oceans 94:14485–14498.  https://doi.org/10.1029/JC094iC10p14485 CrossRefGoogle Scholar
  2. Anderson MJ, Willis TJ (2003) Canonical analysis of principal coordinates: a useful method of constrained ordination for ecology. Ecology 84:511–525.  https://doi.org/10.1890/0012-9658(2003)084[0511:CAOPCA]2.0.CO;2 CrossRefGoogle Scholar
  3. Arrigo KR, van Dijken GL (2015) Continued increases in Arctic Ocean primary production. Prog Oceanogr 136:60–70.  https://doi.org/10.1016/j.pocean.2015.05.002 CrossRefGoogle Scholar
  4. Ashjian CJ, Braund SR, Campbell RG, George JC, Kruse J, Maslowski W, Moore SE, Nicolson CR, Okkonen SR, Sherr BF, Sherr EB (2010) Climate variability, oceanography, bowhead whale distribution, and Iñupiat subsistence whaling near Barrow Alaska. Arctic.  https://doi.org/10.14430/arctic973
  5. Beaugrand G, Conversi A, Chiba S, Edwards M, Fonda-Umani S, Greene C, Mantua N, Otto SA, Reid PC, Stachura MM, Stemmann L, Sugisaki H (2015) Synchronous marine pelagic regime shifts in the Northern Hemisphere. Philos Trans R Soc Lond B Biol Sci 370:20130272.  https://doi.org/10.1098/rstb.2013.0272 CrossRefGoogle Scholar
  6. Berline L, Spitz YH, Ashjian CJ, Campbell RG, Maslowski W, Moore SE (2008) Euphausiid transport in the western Arctic Ocean. Mar Ecol Prog Ser 360:163–178.  https://doi.org/10.3354/meps07387 CrossRefGoogle Scholar
  7. Bromaghin JF, McDonald TL, Stirling I, Derocher AE, Richardson ES, Regehr EV, Douglas DC, Durner GM, Atwood T, Amstrup SC (2015) Polar bear population dynamics in the southern Beaufort Sea during a period of sea-ice decline. Ecol Appl 25:634–651.  https://doi.org/10.1890/14-1129.1 CrossRefGoogle Scholar
  8. Buchholz F, Buchholz C, Weslawski JM (2010) Ten years after: krill as indicator of changes in the macro-zooplankton communities of two Arctic fjords. Polar Biol 33:101–113.  https://doi.org/10.1007/s00300-009-0688-0 CrossRefGoogle Scholar
  9. Campbell RC, Ashjian CJ, Sherr EB, Sherr BF, Lomas MW, Ross C, Alatalo P, Gelfman C, van Keuren D (2016) Mesozooplankton grazing during spring sea-ice conditions in the eastern Bering Sea. Deep-Sea Res II 134:157–172.  https://doi.org/10.1016/j.dsr2.2015.11.003 CrossRefGoogle Scholar
  10. Clarke KR, Warwick RM (2001) Change in marine communities: an approach to statistical analysis and interpretation, 2nd edn. Primer-E, PlymouthGoogle Scholar
  11. Comiso J (1999) Bootstrap sea-ice concentrations for NIMBUS-7 SMMR and DMSP SSM/I. NASA National Snow and Ice Data Center. Digital media, BoulderGoogle Scholar
  12. Coupel P, Jin HY, Joo M, Horner R, Bouvet HA, Sicre MA, Gascard JC, Chen JF, Garçon V, Ruiz-Pino D (2012) Phytoplankton distribution in unusually low sea-ice cover over the Pacific Arctic. Biogeosciences 9:4835–4850.  https://doi.org/10.5194/bg-9-4835-2012 CrossRefGoogle Scholar
  13. Dalpadado P, Skjoldal HR (1996) Abundance, maturity and growth of the krill species Thysanoessa inermis and T. longicaudata in the Barents Sea. Mar Ecol Prog Ser 144:175–183.  https://doi.org/10.3354/meps144175 CrossRefGoogle Scholar
  14. Dalpadado P, Ingvaldsen RB, Stige LC, Bogstad B, Knutsen T, Ottersen G, Ellertsen B (2012) Climate effects on Barents Sea ecosystem dynamics. ICES J Mar Sci 69:1303–1316.  https://doi.org/10.1093/icesjms/fss063 CrossRefGoogle Scholar
  15. Dalpadado P, Hop H, Rønning J, Pavlov V, Sperfeld E, Buchholz F, Rey A, Wold A (2016) Distribution and abundance of euphausiids and pelagic amphipods in Kongsfjorden, Isfjorden and Rijpfjorden (Svalbard) and changes in their relative importance as key prey in a warming marine ecosystem. Polar Biol 39:1765–1784.  https://doi.org/10.1007/s00300-015-1874-x CrossRefGoogle Scholar
  16. Daly KL, Macaulay MC (1988) Abundance and distribution of krill in the ice edge zone of the Weddell Sea, Austral Spring 1983. Deep-Sea Res 35:21–41.  https://doi.org/10.1016/0198-0149(88)90055-6 CrossRefGoogle Scholar
  17. Daly KL, Smith WO Jr (1993) Physical–biological interactions influencing marine plankton production. Ann Rev Ecol Syst 24:555–585.  https://doi.org/10.1146/annurev.es.24.110193.003011 CrossRefGoogle Scholar
  18. Danielson SL, Eisner L, Ladd C, Mordy C, Sousa L, Weingartner TJ (2017) A comparison between late summer 2012 and 2013 water masses, macronutrients, and phytoplankton standing crops in the northern Bering and Chukchi Seas. Deep-Sea Res II 135:7–26.  https://doi.org/10.1016/j.dsr2.2016.05.024 CrossRefGoogle Scholar
  19. Divoky GJ, Lukacs PM, Druckenmiller ML (2015) Effects of recent decreases in arctic sea-ice on an ice-associated marine bird. Prog Oceanogr 136:151–161.  https://doi.org/10.1016/j.pocean.2015.05.010 CrossRefGoogle Scholar
  20. Dunton KH, Cooper LW, Grebmeier JM, Harvey HR, Konar B, Maidment D, Trefry J (2016) Chukchi Sea Offshore Monitoring in Drilling Area (COMIDA): Hanna Shoal Ecosystem Study Final Report. Final Report Prepared for the Bureau of Ocean Energy Management, Anchorage, AK. by the University of Texas Marine Science Institute, Port Aransas.Google Scholar
  21. Durbin EG, Casas MC (2013) Early reproduction by Calanus glacialis in the Northern Bering Sea: the role of ice algae as revealed by molecular analysis. J Plankton Res 36:523–541.  https://doi.org/10.1093/plankt/fbt121 CrossRefGoogle Scholar
  22. Eisner L, Hillgruber N, Martinson E, Maselko J (2013) Pelagic fish and zooplankton species assemblages in relation to water mass characteristics in the northern Bering and southeast Chukchi seas. Polar Biol 36:87–113.  https://doi.org/10.1007/s00300-012-1241-0 CrossRefGoogle Scholar
  23. Ershova EA, Hopcroft RR, Kosobokova KN (2015) Inter-annual variability of summer mesozooplankton communities of the western Chukchi Sea: 2004–2012. Polar Biol 38:1461–1481.  https://doi.org/10.1007/s00300-015-1709-9 CrossRefGoogle Scholar
  24. Ershova EA, Hopcroft RR, Kosobokova KN, Matsuno K, Nelson RJ, Yamaguchi A, Eisner LB (2015) Long-term changes in summer zooplankton communities of the Western Chukchi Sea, 1945–2012. Oceanography 28:100–115.  https://doi.org/10.5670/oceanog.2015.60 CrossRefGoogle Scholar
  25. Grebmeier JM (2012) Shifting patterns of life in the Pacific Arctic and sub-Arctic seas. Annu Rev Mar Sci 4:63–78.  https://doi.org/10.1146/annurev-marine-120710-100926 CrossRefGoogle Scholar
  26. Grebmeier JM, Cooper LW, Feder HM, Sirenko BI (2006) Ecosystem dynamics of the Pacific-influenced northern Bering and Chukchi Seas in the Amerasian Arctic. Prog Oceanogr 71:331–361.  https://doi.org/10.1016/j.pocean.2006.10.001 CrossRefGoogle Scholar
  27. Grebmeier JM, Overland JE, Moore SE, Farley EV, Carmack EC, Cooper LW, Frey KE, Helle JH, McLaughlin FA, McNutt SL (2006) A major ecosystem shift in the northern Bering Sea. Science 311:1461–1464.  https://doi.org/10.1126/science.1121365 CrossRefGoogle Scholar
  28. Haury LR, McGowan JA, Wiebe PH (1978) Patterns and processes in the time-space scales of plankton distributions. In: Spatial Pattern in Plankton Communities. NATO Conference Series (IV Marine Sciences), vol 3. Springer, Boston.  https://doi.org/10.1007/978-1-4899-2195-6_12
  29. Hays GC, Richardson AJ, Robinson C (2005) Climate change and marine plankton. Trends Ecol Evol 20:337–344.  https://doi.org/10.1016/j.tree.2005.03.004 CrossRefGoogle Scholar
  30. Heintz RA, Siddon EC, Farley EV, Napp JM (2013) Correlation between recruitment and fall condition of age-0 pollock (Theragra chalcogramma) from the eastern Bering Sea under varying climate conditions. Deep-Sea Res II 94:150–156.  https://doi.org/10.1016/j.dsr2.2013.04.006 CrossRefGoogle Scholar
  31. Hirst AG, Lampitt RS (1998) Towards a global model of in situ weight-specific growth in marine planktonic copepods. Mar Biol 132:247–257.  https://doi.org/10.1007/s002270050390 CrossRefGoogle Scholar
  32. Hopcroft RR, Kosobokova KN, Pinchuk AI (2010) Zooplankton community patterns in the Chukchi Sea during summer 2004. Deep-Sea Res II 57:27–39.  https://doi.org/10.1016/j.dsr2.2009.08.003 CrossRefGoogle Scholar
  33. Huenerlage K, Buchholz F (2015) Thermal limits of krill species from the high-Arctic Kongsfjord (Spitsbergen). Mar Ecol Prog Ser 535:89–98.  https://doi.org/10.3354/meps11408 CrossRefGoogle Scholar
  34. Hunt GL (1997) Physics, zooplankton, and the distribution of least auklets in the Bering Sea—a review. ICES J Mar Sci 54:600–607.  https://doi.org/10.1006/jmsc.1997.0267 CrossRefGoogle Scholar
  35. Hunt G, Harrison N (1990) Foraging habitat and prey taken by least auklets at King Island, Alaska. Mar Ecol Prog Ser 65:141–150.  https://doi.org/10.3354/meps065141 CrossRefGoogle Scholar
  36. IPCC (2013) Climate change 2013: the physical science basis. Contribution of working group I to the fifth assessment report of the intergovernmental panel on climate change. https://doi.org/10.1017/CBO9781107415324
  37. Keister JE, Di Lorenzo E, Morgan C, Combes V, Peterson W (2011) Zooplankton species composition is linked to ocean transport in the Northern California Current. Glob Change Biol 17:2498–2511.  https://doi.org/10.1111/j.1365-2486.2010.02383.x CrossRefGoogle Scholar
  38. Kiørboe T, Hirst AG (2008) Optimal development time in pelagic copepods. Mar Ecol Prog Ser 367:15–22.  https://doi.org/10.3354/meps07572 CrossRefGoogle Scholar
  39. Kvile KØ, Fiksen Ø, Prokopchuk I, Opdal AF (2017) Coupling survey data with drift model results suggests that local spawning is important for Calanus finmarchicus production in the Barents Sea. J Mar Syst 165:69–76.  https://doi.org/10.1016/j.jmarsys.2016.09.010 CrossRefGoogle Scholar
  40. Laidre KL, Stern H, Kovacs KM, Lowry L, Moore SE, Regehr EV, Ferguson SH, Wiig Ø, Boveng P, Angliss RP, Born EW (2015) Arctic marine mammal population status, sea-ice habitat loss, and conservation recommendations for the 21st century. Conserv Biol 29:724–737.  https://doi.org/10.1111/cobi.12474 CrossRefGoogle Scholar
  41. Lessard E, Shaw C, Bernhardt M, Engel V, Foy M (2010) Euphausiid feeding and growth in the eastern Bering Sea. In Proceedings from the 2010 AGU Ocean Sciences Meeting. American Geophysical Union, 2000 Florida Ave., N. W. Washington DC 20009Google Scholar
  42. Liu H, Hopcroft RR (2007) A comparison of seasonal growth and development of the copepods Calanus marshallae and C. pacificus in the northern Gulf of Alaska. J Plankton Res 29:569–581.  https://doi.org/10.1093/plankt/fbm039 CrossRefGoogle Scholar
  43. Lorenzen CJ (1966) A method for the continuous measurement of in vivo chlorophyll concentration. Deep Sea Res Oceanogr Abstr 13:223–227.  https://doi.org/10.1016/0011-7471(66)91102-8 CrossRefGoogle Scholar
  44. Lowry LF, Sheffield G, George JC (2004) Bowhead whale feeding in the Alaskan Beaufort Sea, based on stomach contents analyses. J Cetacean Res Manag 6:215–223Google Scholar
  45. Miller CB (1988) Neocalanus flemingeri, a new species of Calanidae (Copepoda: Calanoida) from the subarctic Pacific Ocean, with a comparative redescription of Neocalanus plumchrus (Marukawa) 1921. Prog Oceanogr 20:223–273.  https://doi.org/10.1016/0079-6611(88)90042-0 CrossRefGoogle Scholar
  46. Moore SE, Stabeno PJ (2015) Synthesis of arctic research (SOAR) in marine ecosystems of the Pacific Arctic. Prog Oceanogr 136:1–11.  https://doi.org/10.1016/j.pocean.2015.05.017 CrossRefGoogle Scholar
  47. Moore SE, George JC, Sheffield G, Bacon J, Ashjian CJ (2010) Bowhead whale distribution and feeding near Barrow, Alaska, in late summer 2005–2006. Arctic 63:195–205.  https://doi.org/10.14430/arctic974 CrossRefGoogle Scholar
  48. Nelson R, Carmack E, McLaughlin F, Cooper G (2009) Penetration of Pacific zooplankton into the western Arctic Ocean tracked with molecular population genetics. Mar Ecol Prog Ser 381:129–138.  https://doi.org/10.3354/meps07940 CrossRefGoogle Scholar
  49. Oksanen J, Blanchet FG, Kindt R et al (2018) Vegan: community ecology package. R package version 2.5-2Google Scholar
  50. Overland JE, Wang M (2013) When will the summer Arctic be nearly sea-ice free? Geophys Res Lett 40:2097–2101.  https://doi.org/10.1002/grl.50316 CrossRefGoogle Scholar
  51. Perovich DK, Gerland S, Hendricks S, Meier W, Nicolaus M, Richter-Menge JA, Tschudi M (2013) Sea Ice [in Arctic Report Card 2013]. https://www.arctic.noaa.gov/reportcard
  52. Pickart RS, Schulze LM, Moore G, Charette MA, Arrigo KR, van Dijken G, Danielson SL (2013) Long-term trends of upwelling and impacts on primary productivity in the Alaskan Beaufort Sea. Deep-Sea Res I 79:106–121.  https://doi.org/10.1016/j.dsr.2013.05.003 CrossRefGoogle Scholar
  53. Pinchuk AI, Eisner LB (2017) Spatial heterogeneity in zooplankton summer distribution in the eastern Chukchi Sea in 2012–2013 as a result of large-scale interactions of water masses. Deep-Sea Res II 135:27–39.  https://doi.org/10.1016/j.dsr2.2016.11.003 CrossRefGoogle Scholar
  54. Pithan F, Mauritsen T (2014) Arctic amplification dominated by temperature feedbacks in contemporary climate models. Nat Geosci 7:181–184.  https://doi.org/10.1038/ngeo2071 CrossRefGoogle Scholar
  55. Prairie JC, Sutherland KR, Nickols KJ, Kaltenberg AM (2012) Biophysical interactions in the plankton: a cross-scale review. Limnol Oceanogr 2:121–145.  https://doi.org/10.1215/21573689-1964713 CrossRefGoogle Scholar
  56. Questel JM, Clarke C, Hopcroft RR (2013) Seasonal and interannual variation in the planktonic communities of the northeastern Chukchi Sea during the summer and early fall. Cont Shelf Res 67:23–41.  https://doi.org/10.1016/j.csr.2012.11.003 CrossRefGoogle Scholar
  57. Ressler PH, De Robertis A, Kotwicki S (2014) The spatial distribution of euphausiids and walleye pollock in the eastern Bering Sea does not imply top-down control by predation. Mar Ecol Prog Ser 503:111–122.  https://doi.org/10.3354/meps10736 CrossRefGoogle Scholar
  58. Reynolds RW, Smith TM, Liu C, Chelton DB, Casey KS, Schlax MG (2007J) Daily high-resolution-blended analyses for sea surface temperature. J Clim 20:5473–5496.  https://doi.org/10.1175/2007JCLI1824.1 CrossRefGoogle Scholar
  59. Richardson AJ (2008) In hot water: zooplankton and climate change. ICES J Mar Sci 65:279–295.  https://doi.org/10.1093/icesjms/fsn028 CrossRefGoogle Scholar
  60. Sameoto D, Cochrane N, Herman A (1993) Convergence of acoustic, optical, and net catch estimates of euphausiid abundance: use of artificial light to reduce net avoidance. Can J Fish Aquat Sci 50:334–346.  https://doi.org/10.1139/f93-039 CrossRefGoogle Scholar
  61. Serreze MC, Barry RG (2011) Processes and impacts of Arctic amplification: a research synthesis. Glob Planet Change 77:85–89.  https://doi.org/10.1016/j.gloplacha.2011.03.004 CrossRefGoogle Scholar
  62. Serreze MC, Barrett AP, Slater AG, Woodgate RA, Aagaard K, Lammers RB, Steele M, Moritz R, Meredith M, Lee CM (2006) The large-scale freshwater cycle of the Arctic. J Geophys Res 111:C11.  https://doi.org/10.1029/2005JC003424 CrossRefGoogle Scholar
  63. Serreze MC, Crawford AD, Stroeve JC, Barrett AP, Woodgate RA (2016) Variability, trends, and predictability of seasonal sea-ice retreat and advance in the Chukchi Sea. J Geophys Res 121:7308–7325.  https://doi.org/10.1002/2016JC011977 CrossRefGoogle Scholar
  64. Skaret G, Dalpadado P, Hjøllo S, Skogen M, Strand E (2014) Calanus finmarchicus abundance, production and population dynamics in the Barents Sea in a future climate. Prog Oceanogr 125:26–39.  https://doi.org/10.1016/j.pocean.2014.04.008 CrossRefGoogle Scholar
  65. Søreide JE, Leu E, Berge J, Graeve M, Falk-Petersen S (2010) Timing of blooms, algal food quality and Calanus glacialis reproduction and growth in a changing Arctic. Glob Change Biol 16:3154–3163.  https://doi.org/10.1111/j.1365-2486.2010.02175.x Google Scholar
  66. Springer AM, McRoy CP, Turco KR (1989) The paradox of pelagic food webs in the northern Bering Sea—II. Zooplankton communities. Cont Shelf Res 9:359–386.  https://doi.org/10.1016/0278-4343(89)90039-3 CrossRefGoogle Scholar
  67. Stabeno P, Kachel N, Ladd C, Woodgate R (2018) Flow patterns in the eastern Chukchi Sea: 2010–2015. J Geophys Res 123:1177–1195.  https://doi.org/10.1002/2017JC013135 CrossRefGoogle Scholar
  68. Teglhus FW, Agersted MD, Akther H, Nielsen TG (2015) Distributions and seasonal abundances of krill eggs and larvae in the sub-Arctic Godthåbsfjord, SW Greenland. Mar Ecol Prog Ser 539:111–125.  https://doi.org/10.3354/meps11486 CrossRefGoogle Scholar
  69. Timofeev S (2000) Discovery of eggs and larvae of Thysanoessa raschii (M. Sars, 1846) (Euphausiacea) in the Laptev Sea: proof of euphausiids spawning on the shelf of the Arctic Ocean. Crustaceana 73:1089–1094.  https://doi.org/10.1163/156854000505092 CrossRefGoogle Scholar
  70. Tremblay J-É, Robert D, Varela DE, Lovejoy C, Darnis G, Nelson RJ, Sastri AR (2012) Current state and trends in Canadian Arctic marine ecosystems: I. Primary production. Clim Change 115:161–178.  https://doi.org/10.1007/s10584-012-0496-3 CrossRefGoogle Scholar
  71. Weingartner T, Dobbins E, Danielson S, Winsor P, Potter R, Statscewich H (2013) Hydrographic variability over the northeastern Chukchi Sea shelf in summer-fall 2008–2010. Cont Shelf Res 67:5–22.  https://doi.org/10.1016/j.csr.2013.03.012 CrossRefGoogle Scholar
  72. Wiebe PH, Lawson GL, Lavery AC, Copley NJ, Horgan E, Bradley A (2013) Improved agreement of net and acoustical methods for surveying euphausiids by mitigating avoidance using a net-based LED strobe light system. ICES J Mar Sci 70:650–664.  https://doi.org/10.1093/icesjms/fst005 CrossRefGoogle Scholar
  73. Woodgate RA (2018) Increases in the Pacific inflow to the Arctic from 1990 to 2015, and insights into seasonal trends and driving mechanisms from year-round Bering Strait mooring data. Prog Oceanogr 160:124–154.  https://doi.org/10.1016/j.pocean.2017.12.007 CrossRefGoogle Scholar
  74. Woodgate RA, Weingartner T, Lindsay R (2010) The 2007 Bering Strait oceanic heat flux and anomalous Arctic sea-ice retreat. Geophys Res Lett 37:1.  https://doi.org/10.1029/2009GL041621 CrossRefGoogle Scholar
  75. Woodgate RA, Stafford KM, Prahl FG (2015) A Synthesis of Year-round Interdisciplinary Mooring Measurements in the Bering Strait (1990–2014) and the RUSALCA years (2004–2011). Oceanography 28(46):67.  https://doi.org/10.5670/oceanog.2015.57 Google Scholar

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© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2019

Authors and Affiliations

  1. 1.Alaska Fisheries Science Center, National Marine Fisheries ServiceNational Oceanic and Atmospheric AdministrationSeattleUSA
  2. 2.Pacific Marine Environmental LaboratoryNational Oceanic and Atmospheric AdministrationSeattleUSA

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