A foodweb model to explore uncertainties in the South Georgia shelf pelagic ecosystem

Deep-Sea Research Part II: Topical Studies in Oceanography

Volumn 59-60, Issue , 2012, Pages 237-252

  Hill, Simeon L ^a   Keeble, Kathryn ^a   Atkinson, Angus ^a   Murphy, Eugene J ^a  

^a BRITISH ANTARCTIC SURVEY   (United Kingdom)

Author keywords

Climatic changes; Competitors; Ecosystem services; Foodweb model; Primary production

Indexed keywords

CLIMATIC CHANGES; COMPETITORS; ECOSYSTEM SERVICES; FOOD WEB MODEL; PRIMARY PRODUCTION;

BIOMASS; DATA REDUCTION; ECOSYSTEMS; FISH; NUTRITION;

CLIMATE MODELS;

BIOMASS; CRUSTACEAN; DATA SET; ECOSYSTEM SERVICE; FOOD WEB; GLOBAL WARMING; MORTALITY; NUMERICAL MODEL; PELAGIC ENVIRONMENT; PREDATOR-PREY INTERACTION; PRIMARY PRODUCTION; SEABIRD; UNCERTAINTY ANALYSIS; ZOOPLANKTON;

ATLANTIC OCEAN; GEORGIA SHELF;

COPEPODA; DECAPODA (CRUSTACEA); EUPHAUSIACEA; VERTEBRATA;

EID: 84855940720     PISSN: 09670645     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.dsr2.2011.09.001     Document Type: Article

References (91)

1. Atkinson A. Diets and feeding selectivity among the epipelagic copepod community near South Georgia in summer. Pol. Biol. 1994, 14:551-560.
2. Atkinson A. Omnivory and feeding selectivity in five copepod species during spring in the Bellingshausen Sea, Antarctica. ICES J. Mar. Sci. 1995, 52:385-396.
3. Atkinson A. Life cycle strategies of epipelagic copepods in the Southern Ocean. J. Mar. Syst. 1998, 15:289-311.
4. Atkinson A., Shreeve R.S. Response of the copepod community to a spring bloom in the Bellingshausen Sea. Deep-Sea Res. 1995, 42:1291-1311.
5. Atkinson A., Shreeve R.S., Pakhomov E.A., Priddle J., Blight S.P., Ward P. Zooplankton response to a spring bloom near South Georgia, Antarctica. Mar. Ecol.-Prog. Ser. 1996, 144:195-210.
6. Atkinson A., Shreeve R.S., Tarling G.A., Hirst A.G., Rothery P., Pond D., Korb R., Murphy E.J., Watkins J.L. Natural growth rates of Antarctic krill (Euphausia superba): II. Predictive models based on food, temperature, body length, sex, and maturity stage. Limnol. Oceanogr. 2006, 51:973-987.
7. Atkinson A., Siegel V., Pakhomov E.A., Rothery P., Loeb V., Ross R.M., Quetin L.B., Fretwell P., Schmidt K., Tarling G.A., Murphy E.J., Fleming A. Oceanic circumpolar habitats of Antarctic krill. Mar. Ecol.-Prog. Ser. 2008, 362:1-23.
8. Atkinson A., Snÿder R. Krill-copepod interactions at South Georgia, I. Omnivory by Euphausia superba. Mar. Ecol.-Prog. Ser. 1997, 160:63-76.
9. Atkinson A., Ward P., Hill A., Brierley A.S., Cripps G.C. Krill-copepod interactions at South Georgia, Antarctica, II. Euphausia superba as a major control on copepod abundance. Mar. Ecol.-Prog. Ser. 1999, 176:63-79.
10. Atkinson A., Ward P., Williams R., Poulet S.A. Feeding rates and diel vertical migration of copepods near South Georgia: comparison of shelf and oceanic sites. Mar. Biol. 1992, 114:49-56.
11. Atkinson A., Whitehouse M.J. Ammonium regeneration by Antarctic mesozooplankton: an allometric approach. Mar. Biol. 2001, 139:301-311.
12. Atkinson A., Peck J.M. A summer-winter comparison of zooplankton in the oceanic area around South Georgia. Pol. Biol. 1988, 8:463-473.
13. Atkinson A., Peck J.M. The distribution of zooplankton in relation to the South Georgia shelf in summer and winter. Antarctic Ecosystems. Ecological Change and Conservation 1990, 159-165. Springer-Verlag, Berlin. K.R. Kerry, G. Hempel (Eds.).
14. Atkinson A., Schmidt K., Fielding S., Kawaguchi S., Geissler P. Variable food absorption by Antarctic krill: relationships between diet, egestion rate and the composition and sinking rates of their fecal pellets. Deep-Sea Res. II 2012, 59-60:147-158.
15. Atkinson A., Siegel V., Pakhomov E.A., Jessopp M.J., Loeb V. A re-appraisal of the total biomass and annual production of Antarctic krill. Deep-Sea Res. I 2009, 56:727-740.
16. Atkinson A., Siegel V., Pakhomov E., Rothery P. Long-term decline in krill stock and increase in salps within the Southern Ocean. Nature 2004, 432:100-103.
17. Atkinson A., Whitehouse M.J., Priddle J., Cripps G.C., Ward P., Brandon M.A. South Georgia, Antarctica: a productive, cold water, pelagic ecosystem. Mar. Ecol.-Prog. Ser. 2001, 216:279-308.
18. Boyd, I.L., Croxall, J.P., 1996. Preliminary estimates of krill consumption by Antarctic fur seals and macaroni penguins at South Georgia. Document WG-EMM-96/65, CCAMLR, Hobart, 19 pp.
19. Boyd I.L. Estimating food consumption of marine predators: Antarctic fur seals and macaroni penguins. J. Appl. Ecol. 2002, 39:103-119.
20. CCAMLR, 2011. Statistical Bulletin Volume 23, 2001-2010. CCAMLR, Hobart, 293 pp.
21. Christensen V., Walters C.J. Ecopath with ecosim: methods, capabilities and limitations. Ecol. Modelling 2004, 172:109-139.
22. Christensen V., Pauly D. The ECOPATH II-a software for balancing steady-state ecosystem models and calculating network characteristics. Ecol. Modelling 1992, 61:169-185.
23. Croxall J.P., Ricketts C., Prince P.A. Impact of Seabirds on Marine Resources, Especially Krill, of South Georgia Waters. Seabird Energetics 1984, 285-318. Plenum, New York. G.C. Whittow, A. Rahn (Eds.).
24. Croxall J.P., Everson I., Kooyman G.L., Ricketts C., Davis R.W. Fur seal diving behaviour in relation to vertical distribution of krill. J. Anim. Ecol. 1985, 54:1-8.
25. Croxall J.P., Prince P.A. Seabirds as predators on marine resources, especially krill, at South Georgia. Seabirds: Feeding Ecology and Role in Marine Ecosystems 1987, 347-364. Cambridge University Press, Cambridge. J.P. Croxall (Ed.).
26. Croxall J.P., Prince P.A., Reid K. Dietary segregation of krill-eating South Georgia seabirds. J. Zool. 1997, 242:531-556. 10.1111/j.1469-7998.1997.tb03854.x.
27. Croxall J.P., Reid K., Prince P.A. Diet, provisioning and productivity responses of marine predators to differences in availability of Antarctic krill. Mar. Ecol.-Prog. Ser. 1999, 177:115-131.
28. Everson I., Kock K.-H., Parkes G. Interannual variation in condition of the mackerel icefish. J. Fish Biol. 1997, 51:146-154.
29. Gilpin L.C., Priddle J., Whitehouse M.J., Savidge D., Atkinson A. Primary production and carbon uptake dynamics in the vicinity of South Georgia-balancing carbon fixation and removal. Mar. Ecol.-Prog. Ser. 2002, 242:51-62.
30. Hewitt R.P., Watkins J., Naganobu M., Sushin V., Brierley A.S., Demer D., Kasatkina S., Takao Y., Goss C., Malyshko A., Brandon M., Kawaguchi S., Siegel V., Trathan P., Emery J., Everson I., Miller D. Biomass of Antarctic krill in the Scotia Sea in January/February 2000 and its use in revising an estimate of precautionary yield. Deep-Sea Res. II 2004, 51:1215-1236.
31. Hill S.L., Murphy E.J., Reid K., Trathan P.N., Constable A.J. Modelling Southern Ocean ecosystems: krill, the food-web, and the impacts of harvesting. Biol. Rev. 2006, 81:581-608. 10.1017/S1464793106007123.
32. Hill S.L., Reid K., North A.W. Recruitment of mackerel icefish, Champsocephalus gunnari at South Georgia indicated by predator diets and its relationship with sea surface temperature. Can. J. Fish. Aquat. Sci. 2005, 62(11):2530-2537.
33. Hill S.L., Reid K., Thorpe S.E., Hinke J., Watters G.M. A compilation of parameters for ecosystem dynamics models of the Scotia Sea-Antarctic Peninsula region. CCAMLR Sci. 2007, 14:1-25.
34. Hill S.L., Watters G.M., Punt A.E., McAllister M.K., LeQuere C., Turner J. Model uncertainty in the ecosystem approach to fisheries. Fish Fish. 2007, 8:315-333.
35. Hopkins T.L., Ainley D.G., Torres J.J., Lancraft T.L. Trophic structure in open waters of the marginal ice zone in the Weddell-Scotia confluence region during spring, 1983. Pol. Biol. 1993, 13:389-397.
36. Hopkins T.L., Lancraft T.M., Torres J.J., Donelley J. Community structure and trophic ecology of zooplankton in the Scotia Sea marginal ice zone in winter, 1988. Deep-Sea Res. 1993, 40:81-105.
37. Hopkins T.L., Torres J.J. The zooplankton community in the vicinity of the ice edge, western Weddell Sea, March 1986. Pol. Biol. 1988, 9:93-106.
38. Kavanagh P., Newlands N., Christensen V., Pauly D. Automated parameter optimization for Ecopath ecosystem models. Ecol. Modelling 2004, 172:141-149.
39. Korb R.E., Whitehouse M.J., Ward P., Gordon M., Venables H.J. Regional and seasonal differences in microplankton biomass, productivity and structure across the Scotia Sea: implications for the export of biogenic carbon. Deep-Sea Res. II 2012, 59-60:67-77.
40. Mackey A.P., Atkinson A., Hill S.L., Ward P., Cunningham N.J., Johnston N.M., Murphy E.J. Antarctic macrozooplankton of the southwest Atlantic sector and Bellingshausen Sea: baseline historical Discovery Investigations 1928-1935. Distributions related to temperature and food, with projections for subsequent ocean warming. Deep-Sea Res. II 2012, 59-60:130-146.
41. Main, C.E. Collins, M.A., 2011. Diet of the Antarctic starry skate Amblyraja georgiana (Rajidae, Chondrichthyes) at South Georgia (Southern Ocean). Pol. Biol. 34, 389-396. http://doi:10.1007/s00300-010-0894-9.
42. Murphy E.J., Watkins J.L., et al. Spatial and temporal operation of the Scotia Sea ecosystem: a review of large-scale links in a krill centred food web. Philos. Trans. R. Soc. B-Biol. Sci. 2007, 362(1477):113-148.
43. Murphy E.J., Morris D.J., Watkins J.L., Priddle J. Scales of interaction between Antarctic krill and the environment. Antarctic Ocean and Resources Variability 1988, 120-130. Springer-Verlag, Berlin. D. Sahrhage (Ed.).
44. Murphy E.J., Trathan P.N., Watkins J.L., Reid K., Meredith M.P., Forcada J., Thorpe S.E., Johnston N.M., Rothery P. Climatically driven fluctuations in Southern Ocean ecosystems. Proc. R. Soc. B: Biol. Sci. 2007, 274(1629):3057-3067. 10.1098/rspb.2007.1180.
45. Murphy E.J., Watkins J.L., Meredith M.P., Ward P., Trathan P.N., Thorpe S.E. Southern Antarctic Circumpolar Current Front to the northeast of South Georgia: Horizontal advection of krill and its role in the ecosystem. J. Geophys. Res. 2004, 109(C01029). 10 pp. 10.1029/2002JC001522.
46. North A.W., Ward P. Initial feeding by Antarctic fish larvae during winter at South Georgia. Cybium 1989, 13:357-364.
47. North A.W., Ward P. The feeding ecology of larval fish in an Antarctic fjord, with emphasis on Champsocephalus gunneri. Antarctic Ecosystems. Ecological Change and Conservation 1990, 299-307. Springer-Verlag, Berlin. K.R. Kerry, G. Hempel (Eds.).
48. Øresland V. Feeding and predation impact of the chaetognath Eukrohnia hamata in Gerlache Strait, Antarctic Peninsula. Mar. Ecol.-Prog. Ser. 1990, 63:201-209.
49. Øresland V., Ward P. Summer and winter diet of four carnivorous copepod species around South Georgia. Mar. Ecol.-Prog. Ser. 1993, 98:73-78.
50. Pakhomov E.A., Perissinotto R. Trophodynamics of hyperiid amphipod Themisto gaudichaudii in the South Georgia region during late austral summer. Mar. Ecol.-Prog. Ser. 1996, 134:91-100.
51. Pakhomov E.A., Perissinotto R., Froneman P.W., Miller D.G.M. Energetics and feeding dynamics of Euphausia superba in the South Georgia region during the summer of 1994. J. Plankton Res. 1997, 19:399-423.
52. Pakhomov E.A., Verhaye H.M., Atkinson A., Laubscher R.K., Taunton-Clark J. Structure and grazing impact of the mesozooplankton community during late summer 1994 near South Georgia, Antarctica. Pol. Biol. 1997, 18:180-192.
53. Pakhomov E.A., Dubischar C.D., Strass V., Brichta M., Bathmann U.V. The tunicate Salpa thomposoni ecology in the Southern Ocean. I. Distribution, biomass, demography and feeding ecophysiology. Mar. Biol. 2006, 149:609-623.
54. Pinkerton M.H., Bradford-Grieve J.M., Hanchet S.M. A balanced model of the food web of the Ross Sea, Antarctica. CCAMLR Sci. 2010, 17:1-31.
55. Pinkerton M.H., Lundquist C.J., Duffy C.A.J., Freeman D.J. Trophic modelling of a New Zealand rocky reef ecosystem using simultaneous adjustment of diet, biomass and energetic parameters. J. Exp. Mar. Biol. Ecol. 2008, 367:189-203.
56. Priddle J., Leakey R., Symon C., Whitehouse M., Robins D., Cripps G., Murphy E., Owens N. Nutrient cycling by Antarctic marine microbial plankton. Mar. Ecol.-Prog. Ser. 1995, 116:181-198.
57. Reid K., Arnould J.P.Y. The diet of Antarctic fur seals Arctocephalus gazella during the breeding season at South Georgia. Pol. Biol. 1996, 16:105-114. 10.1007/BF02390431.
58. Reid K. Growth of Antarctic krill Euphausia superba at South Georgia. Mar. Biol. 2000, 138:57-62.
59. Reid K., Forcada J. Causes of offspring mortality in the Antarctic fur seal, Arctocephalus gazella: the interaction of density dependence and ecosystem variability. Can. J. Zool. 2005, 83:604-609. 10.1139/z05-045.
60. Reid K., Hill S.L., Diniz T.C.D., Collins M.A. Mackerel icefish Champsocephalus gunnari in the diet of upper trophic level predators at South Georgia: implications for fisheries management. Mar. Ecol.-Prog. Ser. 2005, 305:153-161.
61. Reilly S., Hedley S., Borberg J., Hewitt R., Thiele D., Watkins J., Naganobu M. Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean. Deep-Sea Res. II 2004, 51:1397-1409.
62. Ross R.M., Quetin L. How productive are Antarctic Krill?. Bioscience 1986, 36:264-269.
63. Schmidt K., Atkinson A., Petzke K.-J., Voss M., Pond D.W. Protozoans as a food source for Antarctic krill, Euphausia superba: complementary insights from stomach content, fatty acids, and stable isotopes. Limnol. Oceanogr. 2006, 51:2409-2427.
64. Schmidt K., Atkinson A., Steigenberger S., Fielding S., Lindsay M.C.M., Pond D.W., Tarling G.A., Klevjer T.A., Allen C.S., Nicol S., Achterberg E.P. Seabed foraging by Antarctic krill: implications for stock assessment, bentho-pelagic coupling and the vertical transfer of iron. Limnol. Oceanogr. 2011, 56:1411-1428.
65. Schmidt K., Atkinson A., Venables H.J., Pond D.W. Early spawning of Antarctic krill in the Scotia Sea is fuelled by "superfluous feeding" on non-ice-associated phytoplankton blooms. Deep-Sea Res. II 2012, 59-60:159-172.
66. Shreeve R.S., Tarling G.A., Atkinson A., Ward P., Goss C., Watkins J.L. Relative production of Calanoides acutus (Copepoda: Calanoida) and Euphausia superba (Antarctic krill) at South Georgia, and its implications at wider scales. Mar. Ecol.-Prog. Ser. 2005, 298:229-239.
67. Shreeve R., Collins M., Tarling G.A., Main C.E., Ward P., Johnston N.M. Feeding ecology of myctophid fishes in the northern Scotia Sea. Mar. Ecol.-Prog. Ser. 2009, 386:221-236.
68. Shreeve R.S., Ward P., Whitehouse M.J. Copepod growth and development around South Georgia: relationships with temperature, food and krill. Mar. Ecol.-Prog. Ser. 2002, 233:169-183.
69. Siegel V. Krill, Euphausiacea. Life history and aspects of population dynamics. Can. J. Fish. Aquat. Sci. 2000, 57:130-150.
70. Siegel V., Loeb V. Recruitment of Antarctic krill Euphausia superba and possible causes for its variability. Mar. Ecol.-Prog. Ser. 1995, 123:45-56. 10.3354/meps123045.
71. Siegel V., Nicol S. Population parameters. Krill Biology Ecology and Fisheries 2000, 103-149. Blackwell, Oxford. I. Everson (Ed.).
72. Steele J.H. Assessment of some linear food web methods. J. Mar. Syst. 2009, 76:186-194. 10.1016/j.jmarsys.2008.05.012.
73. Stowasser G., McGill R.A.R., Atkinson A., Phillips R.A., Collins M.A., Pond D.W. Food web dynamics in the Scotia Sea in summer: a stable isotope study. Deep-Sea Res. II 2012, 59-60:208-221.
74. Straile D. Gross growth efficiencies of protozoan and metazoan zooplankton and their dependence on food concentration, predator-prey weight ratio, and taxonomic group. Limnol. Oceanogr. 1997, 42:1375-1385.
75. Tarling G.A., Cuzin-Roudy J., Thorpe S.E., Shreeve R.S., Ward P., Murphy E.J. Recruitment of Antarctic krill Euphausia superba in the South Georgia region: adult fecundity and the fate of larvae. Mar. Ecol.-Prog. Ser. 2007, 331:161-179.
76. Trathan P.N., Everson I., Miller D.G.M., Watkins J.L., Murphy E.J. Krill biomass in the Atlantic. Nature 1995, 373:201-202.
77. Trivelpiece W.Z., Hinke J.T., Miller A.K., Reiss C.S., Trvelpiece S.G., Watters G.M. Variability in krill biomass links harvesting and climate warming to penguin population changes in Antractica. Proc. Natl. Acad. Sci. 2011, 108:7625-7628.
78. von Harbou, L., Dubischar, C.D., Pakhomov, E.A., Hunt, B.P.V., Hagen, W., Bathmann, U.V., 2011. Salps in the Lazarev Sea, Southern Ocean: I. Feeding dynamics. Marine Biology, 158, 2009-2026.
79. Ward P., Atkinson A., Murray A.W.A., Wood A.G.W., Williams R., Poulet S.A. The summer zooplankton community at South Georgia: biomass, vertical migration and grazing. Pol. Biol. 1995, 15:195-208.
80. Ward P., Atkinson A., Tarling G.A. Mesozooplankton community structure and variability in the Scotia Sea: a seasonal comparison. Deep-Sea Res. II 2012, 59-60:78-92.
81. Ward P., Shreeve R., Whitehouse M., Korb R., Atkinson A., Meredith M., Pond D., Watkins J., Goss C., Cunningham N. Phyto- and zooplankton community structure and production around South Georgia, Southern Ocean during summer 2001/2002. Deep-Sea Res. I 2005, 52:421-441.
82. Ward P., Shreeve R.S. The spring mesozooplankton community at South Georgia: a comparison of shelf and oceanic sites. Pol. Biol. 1999, 22:289-301.
83. Ward P., Shreeve R.S., Atkinson A., Korb R., Whitehouse M.J., Thorpe S., Pond D., Cunningham N. Plankton community structure and variability in the Scotia Sea: austral summer 2003. Mar. Ecol.-Prog. Ser. 2006, 309:75-91.
84. Ward P. On the biology of Antarctomysis ohlini, Crustacea: Mysidacea at South Georgia. Br. Antarct. Surv. Bull. 1985, 67:13-23.
85. Ward P. The distribution of zooplankton in an Antarctic fjord at South Georgia during summer and winter. Antarct. Sci. 1990, 1:141-150.
86. Ward, P., Shreeve, R.S., Tarling, G.A., 2006b. The autumn mesozooplankton community at South Georgia: biomass, population structure and vertical distribution. Polar Biol. 29, 950-962. http://doi:10.1007/s00300-006-0136-3.
87. Watts J., Tarling G.A. Population dynamics and production of Themisto gaudichaudii, Amphipoda, Hyperiidae at South Georgia, Antarctica. Deep-Sea Res. II 2012, 59-60:117-129.
88. Whitehouse M.J., Atkinson A., Rees A.P. Close coupling between ammonium uptake by phytoplankton and excretion by Antarctic krill, Euphausia superba. Deep-Sea Res. I 2011, 58(7):725-732.
89. Whitehouse M.J., Atkinson A., Ward P., Korb R.E., Rothery P., Fielding S. Role of krill versus bottom-up factors in controlling phytoplankton biomass in the northern Antarctic waters of South Georgia. Mar. Ecol.-Prog. Ser. 2009, 393:69-82.
90. Whitehouse M.J., Mereditha M.P., Rothery P., Atkinson A., Ward P., Korb R.E. Rapid warming of the ocean around South Georgia, Southern Ocean, during the 20th century: forcings, characteristics and implications for lower trophic levels. Deep-Sea Res. I: Oceanogr. Res. Pap. 2008, 55:1218-1228.
91. Whitehouse M.J., Atkinson A., Korb R.E., Venables H.J., Pond D.W., Gordon M. Substantial primary production in the land-remote region of the central and northern Scotia Sea. Deep-Sea Res. II 2012, 59-60:47-56.