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Items where NERC Author is "Watkins, Jonathan"

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Publication - Article

Fielding, Sophie; Watkins, Jonathan L.; Trathan, Philip N.; Enderlein, Peter; Waluda, Claire M.; Stowasser, Gabriele; Tarling, Geraint A.; Murphy, Eugene J.. 2014 Inter-annual variability in Antarctic krill (Euphausia superba) density at South Georgia, Southern Ocean: 1997 - 2013. ICES Journal of Marine Sciences. 10.1093/icesjms/fsu104

Murphy, E.J.; Hofmann, E.E.; Watkins, J.L.; Johnston, N.M.; Piñones, A.; Ballerini, T.; Hill, S.L.; Trathan, P.N.; Tarling, G.A.; Cavanagh, R.A.; Young, E.F.; Thorpe, S.E.; Fretwell, P.. 2013 Comparison of the structure and function of Southern Ocean regional ecosystems: The Antarctic Peninsula and South Georgia. Journal of Marine Systems, 109-110. 22-42. 10.1016/j.jmarsys.2012.03.011

Fielding, Sophie; Watkins, Jonathan; Collins, Martin Anthony; Enderlein, Peter; Venables, Hugh. 2012 Acoustic determination of the distribution of fish and krill across the Scotia Sea in spring 2006, summer 2008 and autumn 2009. Deep Sea Research II, 59-60. 173-188. 10.1016/j.dsr2.2011.08.002

Renner, Angelika H.H.; Thorpe, Sally E.; Heywood, Karen J.; Murphy, Eugene J.; Watkins, Jon L.; Meredith, Michael P.. 2012 Advective pathways near the tip of the Antarctic Peninsula: Trends, variability and ecosystem implications. Deep Sea Research I, 63. 91-101. 10.1016/j.dsr.2012.01.009

Cox, Martin J.; Watkins, Jonathan L.; Reid, Keith; Brierley, Andrew S.. 2011 Spatial and temporal variability in the structure of aggregations of Antarctic krill (Euphausia superba) around South Georgia, 1997-1999. ICES Journal of Marine Sciences, 68 (3). 489-498. 10.1093/icesjms/fsq202

Reid, Keith; Watkins, Jon L.; Murphy, Eugene J.; Trathan, Phil N.; Fielding, Sophie; Enderlein, Peter. 2010 Krill population dynamics at South Georgia: implications for ecosystem-based fisheries management. Marine Ecology Progress Series, 399. 243-252. 10.3354/meps08356

Tarling, Geraint A.; Klevjer, Thor; Fielding, Sophie; Watkins, Jon; Atkinson, Angus; Murphy, Eugene; Korb, Rebecca; Whitehouse, Mick; Leaper, Russell. 2009 Variability and predictability of Antarctic krill swarm structure. Deep-Sea Research Part I, 56 (11). 1994-2012. 10.1016/j.dsr.2009.07.004

Thorpe, S.E.; Murphy, E.J.; Watkins, J.L.. 2007 Circumpolar connections between Antarctic krill (Euphausia superba Dana) populations: investigating the roles of ocean and sea ice transport. Deep Sea Research I, 54 (5). 792-810. 10.1016/j.dsr.2007.01.008

Murphy, Eugene J.; Trathan, Philip N.; Watkins, Jon L.; Reid, Keith; Meredith, Michael P.; Forcada, Jaume; Thorpe, Sally E.; Johnston, Nadine M.; Rothery, Peter. 2007 Climatically driven fluctuations in Southern Ocean ecosystems. Proceedings of the Royal Society B: Biological Sciences, 274 (1629). 3057-3067. 10.1098/rspb.2007.1180

Saunders, R.A.; Brierley, A.S.; Watkins, Jonathan L.; Reid, Keith; Murphy, Eugene J.; Enderlein, Peter; Bone, D.G.. 2007 Intra-annual variability in the density of Antarctic krill (Euphausia superba) at South Georgia, 2002-2005: within-year variation provides a new framework for interpreting previous 'annual' estimates of krill density. CCAMLR Science, 14. 27-41.

Murphy, E.J.; Watkins, J.L.; Trathan, P.N.; Reid, K.; Meredith, M.P.; Thorpe, S.E.; Johnston, N.M.; Clarke, A.; Tarling, G.A.; Collins, M.A.; Forcada, J.; Shreeve, R.S.; Atkinson, A.; Korb, R.; Whitehouse, M.J.; Ward, P.; Rodhouse, P.G.; Enderlein, P.; Hirst, A.G.; Martin, A.R.; Hill, S.L.; Staniland, I.J.; Pond, D.W.; Briggs, D.R.; Cunningham, N.J.; Fleming, A.H.. 2007 Spatial and temporal operation of the Scotia Sea ecosystem: a review of large-scale links in a krill centred food web. Philosophical Transactions of the Royal Society (B), 362 (1477). 113-148. 10.1098/rstb.2006.1957

Tarling, Geraint A.; Shreeve, Rachael S.; Hirst, Andrew G.; Atkinson, Angus; Pond, Dave W.; Murphy, Eugene J.; Watkins, Jon L.. 2006 Natural growth rates in Antarctic krill (Euphausia superba): I. Improving methodology and predicting intermolt period. Limnology and Oceanography, 51 (2). 959-972.

Atkinson, Angus; Shreeve, Rachael S.; Hirst, Andrew G.; Rothery, Peter; Tarling, Geraint A.; Pond, David W.; Korb, Rebecca E.; Murphy, Eugene J.; Watkins, Jonathon L.. 2006 Natural growth rates in Antarctic krill (Euphausia superba): II. Predictive models based on food, temperature, body length, sex, and maturity stage. Limnology and Oceanography, 51 (2). 973-987.

Ward, Peter; Shreeve, Rachael; Whitehouse, Mick; Korb, Beki; Atkinson, Angus; Meredith, Mike; Pond, David; Watkins, Jon; Goss, Cathy; Cunningham, Nathan. 2005 Phyto- and zooplankton community structure and production around South Georgia (Southern Ocean) during Summer 2001/02. Deep Sea Research I, 52 (3). 421-441. 10.1016/j.dsr.2004.10.003

Shreeve, Rachael S.; Tarling, Geraint A.; Atkinson, Angus; Ward, Peter; Goss, Cathy; Watkins, Jonathon. 2005 Relative production of Calanoides acutus (Copepoda: Calanoida) and Euphausia superba (Antarctic krill) at South Georgia, and its implications at wider scales. Marine Ecology Progress Series, 298. 229-239. 10.3354/meps298229

Reilly, S.; Hedley, S.; Borberg, J.; Hewitt, R.; Thiele, D.; Watkins, J.; Naganobu, M.. 2004 Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean. Deep-Sea Research Part II, 51 (12-13). 1397-1409. 10.1016/j/dsr2.2004.06.008

Hewitt, Roger P.; Watkins, Jon; Naganobu, Mikio; Sushin, Viacheslav; Brierley, Andrew S.; Demer, David; Kasatkina, Svetlana; Takao, Yoshimi; Goss, Cathy; Malyshko, Alexander; Brandon, Mark; Kawaguchi, So; Siegel, Volker; Trathan, Philip; Emery, Jennifer; Everson, Inigo; Miller, Denzil. 2004 Biomass of Antarctic krill in the Scotia Sea in January/February 2000 and its use in revising an estimate of precautionary yield. Deep-Sea Research Part II, 51 (12-13). 1215-1236. 10.1016/j.dsr2.2004.06.011

Watkins, J.L.; Hewitt, R.P.; Naganobu, M.; Sushin, V.. 2004 The CCAMLR 2000 Survey: a multinational, multi-ship biological oceanography survey of the Atlantic sector of the Southern Ocean.(Editorial). Deep-Sea Research Part II, 51 (12-13). 1205-1213. 10.1016/j.dsr2.2004.06.010

Siegel, V.; Kawaguchi, S.; Ward, P.; Litvinov, F.; Sushin, V.; Loeb, V.; Watkins, J.. 2004 Krill demography and large-scale distribution in the southwest Atlantic during January/February 2000. Deep-Sea Research Part II, 51 (12-13). 1253-1273. 10.1016/j.dsr2.2004.06.013

Murphy, E.J.; Thorpe, S.E.; Watkins, J.L.; Hewitt, R.. 2004 Modeling the krill transport pathways in the Scotia Sea: spatial and environmental connections generating the seasonal distribution of krill. Deep-Sea Research Part II, 51 (12-13). 1435-1456. 10.1016/j.dsr2.2004.06.019

Hewitt, R.P.; Watters, G.; Trathan, P.N.; Croxall, J.P.; Goebel, M.E.; Ramm, D.; Reid, K.; Trivelpiece, W.Z.; Watkins, J.L.. 2004 Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea. CCAMLR Science, 11. 81-97.

Kawaguchi, S.; Siegel, V.; Litvinov, F.; Loeb, V.; Watkins, J.. 2004 Salp distribution and size composition in the Atlantic sector of the Southern Ocean. Deep-Sea Research Part II, 51 (12-13). 1369-1381. 10.1016/j.dsr2.2004.06.017

Priddle, J.; Whitehouse, M.J.; Ward, P.; Shreeve, R.S.; Brierley, A.S.; Atkinson, A.; Watkins, J.L.; Brandon, M.A.; Cripps, G.C.. 2003 Biogeochemistry of a Southern Ocean plankton ecosystem: using natural variability in community composition to study the role of metazooplankton in carbon and nitrogen cycles. Journal of Geophysical Research, 108 (C4), 8082. 10.1029/2000JC000425

Woodd-Walker, Rachel S.; Watkins, Jonathan L.; Brierley, Andrew S.. 2003 Identification of Southern Ocean acoustic targets using aggregation backscatter and shape characteristics. ICES Journal of Marine Science, 60 (3). 641-649. 10.1016/S1054-3139(03)00062-6

Wafy, M.H.; Brierley, A.S.; Gull, S.F.; Watkins, J.L.. 2003 Maximum entropy reconstructions of krill distribution and estimates of krill density from acoustic surveys at South Georgia, 1996-2000. CCAMLR Science, 10. 91-100.

Trathan, P.N.; Brierley, A.S.; Brandon, M.A.; Bone, D.G.; Goss, C.; Grant, S.A.; Murphy, E.J.; Watkins, J.L.. 2003 Oceanographic variability and changes in Antarctic krill (Euphausia superba) abundance at South Georgia. Fisheries Oceanography, 12 (6). 569-583. 10.1046/j.1365-2419.2003.00268.x

Meredith, Michael P.; Watkins, Jon L.; Murphy, Eugene J.; Ward, Peter; Bone, Douglas G.; Thorpe, Sally E.; Grant, Sharon A.; Ladkin, Russell S.. 2003 Southern ACC Front to the northeast of South Georgia: pathways, characteristics, and fluxes. Journal of Geophysical Research, 108 (C5), 3162. 16, pp. 10.1029/2001JC001227

Meredith, Michael P.; Watkins, Jon L.; Murphy, Eugene J.; Cunningham, Nathan J.; Wood, Andrew G.; Korb, Rebecca; Whitehouse, Mick J.; Thorpe, Sally E.; Vivier, Frédéric. 2003 An anticyclonic circulation above the Northwest Georgia Rise, Southern Ocean. Geophysical Research Letters, 30 (20), 2061. 4, pp. 10.1029/2003GL018039

Hewitt, Roger P.; Watkins, Jon L.; Naganobu, Mikio; Tshernyshkov, Pavel; Brierley, Andrew S.; Demer, David A.; Kasatkina, Svetlana; Takao, Yoshimi; Goss, Cathy; Malyshko, Alexander; Brandon, Mark A.; Kawaguchi, So; Siegel, Volker; Trathan, Philip N.; Emery, Jennifer H.; Everson, Inigo; Miller, Denzil G.M.. 2002 Setting a precautionary catch limit for Antarctic krill. Oceanography, 15 (3). 26-33. 10.5670/oceanog.2002.12

Brierley, A.S.; Goss, C.; Grant, S.A.; Watkins, J.L.; Reid, K.; Belchier, M.; Everson, I.; Jessop, M.J.; Afanasyev, V.; Robst, J.. 2002 Significant intra-annual variability in krill distribution and abundance at South Georgia revealed by multiple acoustic surveys during 2000/01. CCAMLR Science, 9. 71-82.

Ward, Peter; Whitehouse, Mick; Meredith, Mike; Murphy, Eugene; Shreeve, Rachael; Korb, Rebecca; Watkins, Jon; Thorpe, Sally; Woodd-Walker, Rachel; Brierley, Andrew; Cunningham, Nathan; Grant, Sharon; Bone, Doug. 2002 The Southern Antarctic Circumpolar Current Front: physical and biological coupling at South Georgia. Deep Sea Research I, 49 (12). 2183-2202. 10.1016/S0967-0637(02)00119-X

Watkins, J.L.; Brierley, A.S.. 2002 Verification of the acoustic techniques used to identify Antarctic krill. ICES Journal of Marine Sciences, 59. 1326-1336. 10.1006/jmsc.2002.1309

Trathan, P.N.; Watkins, J.L.; Murray, A.W.A.; Brierley, A.S.; Everson, I.; Goss, C.; Priddle, J.; Reid, K.; Ward, P.; Hewitt, R.; Demer, D.; Naganobu, M.; Kawaguchi, S.; Sushin, V.; Kasatkina, S.M.; Hedley, S.; Kim, S.; Pauly, T.. 2001 The CCAMLR-2000 krill synoptic survey: a description of the rationale and design. CCAMLR Science, 8. 1-23.

Brierley, Andrew S; Watkins, Jonathan L.. 2000 Effects of sea ice cover on the swarming behaviour of Antarctic krill,Euphausia superba. Canadian Journal of Fisheries and Aquatic Sciences, 57 (S3). 24-30. 10.1139/f00-169

Brierley, A. S.; Watkins, J. L. ; Goss, C.; Wilkinson, M. T. ; Everson, I.. 1999 Acoustic estimates of krill density at South Georgia, 1981 to 1998. CCAMLR Science, 6. 47-57.

Brierley, A. S.; Demer, D. A.; Watkins, J. L.; Hewitt, R. P.. 1999 Concordance of interannual fluctuations in acoustically estimated densities of Antarctic krill around South Georgia and Elephant Island: biological evidence of same-year teleconnections across the Scotia Sea. Marine Biology, 134 (4). 675-681. 10.1007/s002270050583

Cripps, G. C.; Watkins, J. L.; Hill, H. J.; Atkinson, A.. 1999 Fatty acid content of Antarctic krill Euphausia superba at South Georgia related to regional populations and variations in diet. Marine Ecology Progress Series, 181. 177-188. 10.3354/meps181177

Reid, Keith; Watkins, Jon L.; Croxall, John P.; Murphy, Eugene J.. 1999 Krill population dynamics at South Georgia 1991-1997, based on data from predators and nets. Marine Ecology Progress Series, 177. 103-114. 10.3354/meps177103

Watkins, J. L.; Murray, A. W. A.; Daly, H. I.. 1999 Variation in the distribution of Antarctic krill Euphausia superba around South Georgia. Marine Ecology Progress Series, 188. 149-160. 10.3354/meps188149

Watkins, Jonathan. 1999 A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia. CCAMLR Science, 6. 71-84.

Brierley, Andrew S.; Ward, Peter; Watkins, Jonathan L.; Goss, Catherine. 1998 Acoustic discrimination of Southern Ocean zooplankton. Deep Sea Research Part II: Topical Studies in Oceanography, 45 (7). 1155-1173. 10.1016/S0967-0645(98)00025-3

Goss, C.; Rodhouse, P.; Watkins, J.L.; Brierley, A.S.. 1998 Attribtuion of acoustic echoes to squid in the south Atlantic. CCAMLR Science, 5. 259-271.

Murphy, E.J.; Watkins, J.L.; Reid, K.; Trathan, P.N.; Everson, I.; Croxall, J.P.; Priddle, J.; Brandon, M.A.; Brierley, A.S.; Hofmann, E.. 1998 Interannual variability of the South Georgia marine ecosystem: biological and physical sources of variation in the abundance of krill. Fisheries Oceanography, 7 (3-4). 381-390. 10.1046/j.1365-2419.1998.00081.x

Watkins, J. L.; Murray, A. W. A.. 1998 Layers of Antarctic krill, Euphausia superba  : are they just long krill swarms? Marine Biology, 131 (2). 237-247. 10.1007/s002270050316

Brierley, A.S.; Goss, C.; Watkins, J.L.; Woodroffe, P.. 1998 Variations in echosounder calibration with temperature, and some possible implications for acoustic surveys of krill biomass. CCAMLR Science, 5. 273-281.

Brierley, Andrew S..; Brandon, Mark A.; Watkins, Jonathan L.. 1998 An assessment of the utility of an acoustic Doppler current profiler for biomass estimation. Deep Sea Research Part I: Oceanographic Research Papers, 45 (9). 1555-1573. 10.1016/S0967-0637(98)00012-0

Brierley, Andrew S.; Watkins, Jonathan L.; Murray, Alistair W.A.. 1997 Interannual variability in krill abundance at South Georgia. Marine Ecology Progress Series, 150. 87-98. 10.3354/meps150087

Publication - Book Section

Murphy, E. J.; Watkins, J.L.; Trathan, P.N.; Reid, K.; Meredith, M.P.; Hill, S.L.; Thorpe, S.E.; Johnston, N.M.; Clarke, A.; Tarling, G.A.; Collins, M.A.; Forcada, J.; Atkinson, A.; Ward, P.; Staniland, I.J.; Pond, D.W.; Cavanagh, R.A.; Shreeve, R.S.; Korb, R.E.; Whitehouse, M.J.; Rodhouse, P.G.; Enderlein, P.; Hirst, A.G.; Martin, A.R.; Briggs, D.R.; Cunningham, N.J.; Fleming, A.H.. 2012 Spatial and Temporal Operation of the Scotia Sea Ecosystem. In: Rogers, Alex D.; Johnston, Nadine M.; Murphy, Eugene J.; Clarke, Andrew, (eds.) Antarctic Ecosystems: An Extreme Environment in a Changing World. Blackwell Publishing, 160-212.

Watkins, Jonathan L.. 2000 Aggregation and vertical migration. In: Everson, I., (ed.) Krill: biology, ecology and fisheries. Oxford, Blackwell Science, 80-102. (Fish and Aquatic Resources, 6).

Watkins, Jonathan L.. 2000 Sampling krill: direct sampling. In: Everson , I., (ed.) Krill: biology, ecology and fisheries. Oxford, Blackwell Science, 8-19. (Fish and Aquatic Resource Series, 6).

This list was generated on Sun Sep 14 03:53:34 2014 BST.