adforage.96 lterpal9697 06jan97 - 15feb97 Adelie Penguin diet studies during the 96-97 season on Torgersen Island. Data files describe general information associated with each sample, the number and weight of minor and major prey categories, the number and size of krill (Euphausia superba) and the number, size and species of fish in each sample. headerxx.dat year.month.day, island, colony number, local time, sample number, penguin weight (g), penguin sex, culmen length (mm), culmen depth (mm), dietxx.dat sample_number total_sample_weight(g) total_euphausia_superba_weight(g) estimated_number_of_euphausia_superba total_thysanoesa_macrura_weight(g) estimated_number_of_thysanoesa_macrura total_fish_weight(g) estimated_number_of_fish go_to_prey_files_for_further_data krillxx.dat sample_number number_of_krill_in_sample number_in_size-class_16-20mm number_in_size-class_21-25mm number_in_size-class_26-30mm number_in_size-class_31-35mm number_in_size-class_36-40mm number_in_size-class_41-45mm number_in_size-class_46-50mm number_in_size-class_51-55mm number_in_size-class_56-60mm number_in_size-class_61-65mm fishxx.dat sample_number sample_source prey_type fish_species_name fish_evidence number_of_fish fish_or_fish_evidence_size_(mm) total_fish_weight_(g) fish_estimated_length_(mm) fish_estimated_weight_(g) preyxx.dat sample_number sample_source prey_type prey_species_name prey_evidence number_of_prey prey_size(mm) prey_weight(g) prey_estimated_length(mm) prey_estimated_weight(g) All variables in which the "estimated" qualifier appears are derived variables. In most cases these fields are not filled because the data depend on, for example, what regression equations are used, hence the choice is specific to each investigator. Note that penguin sex is determined based on culmen size (see CCAMLR 1992). Five breeding adult Adelie penguins feeding chicks were sampled every 5-7 days on Torgersen Island in accordance with the CEMP Standard Methods (CCAMLR 1992) for sampling frequency. Samples were obtained in the field by stomach lavage (CCAMLR 1992) and sorted and identified in the lab within 3 hours. The experimental design is based on the CEMP Standard Methods (CCAMLR 1992) for determining penguin diets. To the degree possible, diet samples are collected after 16:00 local time, which historically corresponds with the arrival of the largest numbers of feeding birds and the presence of fresh prey in the stomachs. Samples taken any earlier in the Palmer area tend to be highly digested and prey less reliably assessed. Antarctica, Adelie penguin, foraging ecology, krill, Euphausia superba, fish ascii local DBASE online lter ~lter/lterdata/lterpal9697/adforage.96/header96.txt ~lter/lterdata/lterpal9697/adforage.96/diet96.txt ~lter/lterdata/lterpal9697/adforage.96/krill96.txt ~lter/lterdata/lterpal9697/adforage.96/fish96.txt ~lter/lterdata/lterpal9697/adforage.96/prey96.txt William R. Fraser William R. Fraser, ubiwf@montana.edu William R. Fraser Donna L. Patterson Eric Holm John Carlson Peter Duley Same personnel listed above. William R. Fraser Donna L. Patterson William R. Fraser, ubiwf@montana.edu 23jul99 CCAMLR, 1992. Standard Methods for Monitoring Studies. Convention for the Conservation of Antarctic Marine Living Resources Ecosystem Monitoring Program, Hobart, Tasmania, Australia. Smith, R.C., K.S. Baker, W.R. Fraser, E.E. Hofmann, D.M. Karl, J.M. Klinck, L.B. Quetin, B.B. Prezlin, R.M. Ross, W.Z. Trivelpiece and M. Vernet. 1995. The Palmer LTER: A long- term ecological research program at Palmer Station, Antarctica. Oceanography 8: 77-86. Smith, R.C., L.B. Quetin, J. Jones, R.M. Ross, W.R. Fraser, W.Z. Trivelpiece. L. Somervill and B.D. Hardesty. 1995 Palmer LTER: Seabird picket-line sampling and Zodiac tracking during the January 1995 cruise. Antarctic Journal of the United States 30: 273-274. L.B. Quetin, Smith, R.C., J. Jones, R.M. Ross, K. Baker, M. Vernet W.R. Fraser, W.Z. Trivelpiece. L. Somervill and B.D. Hardesty. 1995. Palmer LTER: Observations in foraging areas of Adélie penguins during the January 1995 cruise. Antarctic Journal of the United States 30: 269-270. Fraser, W.R. and W.Z. Trivelpiece. 1995. Palmer LTER: Relationships between variability in sea ice coverage, krill recruitment and the foraging ecology of Adelie Penguins. Antarctic Journal of the United States, 30: 271-272. Fraser, W.R. and W.Z. Trivelpiece. 1995. Variability in sea ice coverage and long-term change in the diets of Adélie penguins: implications for southern ocean ecosystem studies. CCAMLR SC-CAMLR, WG-EMM-95/64, 21 pp. Fraser, W.R., D.L. Patterson, E.J. Holm, J.C. Carlson and P.A. Duley. 1997. U.S. seabird research undertaken as part of the CCAMLR Ecosystem Monitoring Program at Palmer Station 1996-1997. Annual Report, National Marine Fisheries Service, La Jolla, California, USA, 35pp. Fraser, W.R. and W.Z. Trivelpiece. 1996. Factors controlling the distribution of seabirds: Winter-Summer heterogeneity in the distribution of Adelie Penguin populations. In, Foundations for Ecological Research West of the Antarctic Peninsula, R. Ross, E. Hofmann, and L. Quetin, eds., AGU Antarctic Research Series 70: 257- 272, Washington, D.C. Trivelpiece, W.Z. and W.R. Fraser. 1996. The breeding biology and distribution of Adelie Penguins: Adaptations to environmental variability. In, Foundations for Ecological Research West of the Antarctic Peninsula, R. Ross, E. Hofmann and L. Quetin, eds., AGU Antarctic Research Series 70: 273-285, Washington, D.C. Hofmann, E., K.S. Baker, W.R. Fraser, Karl, J.M. Klinck, B.B. Prezlin, L.B. Quetin, R.M. Ross, R.C. Smith, W.Z. Trivelpiece and M. Vernet. 1996. The western Antarctic Peninsula region: summary of environmental and ecological processes. In, Foundations for Ecological Research West of the Antarctic Peninsula, R. Ross, E. Hofmann and L. Quetin, eds., AGU Antarctic Research Series 70: 437- 448, Washington, D.C. Loeb, V., V. Siegel, O. Holm-Hansen, R. Hewitt, W. Fraser, W. Trivelpiece and S. Trivelpiece. 1997. Effects of sea-ice extent and krill or salp dominance on the Antarctic food web. Nature 387: 897-900. Kaiser, J. 1997. Is warming trend harming penguins? Science 276: 1790. Island maps of pal-lter seabird research sites. Key to acronyms and abreviations used in pal-lter seabird databases. All data are initially recorded in field notebooks. Quality assurance is determined during two subsequent stages. The first is when data are moved from field notebooks to data sheets; the second is when data are moved from data sheets to databases. Core measurments available two years after the season. Citation acknowledgement: "Data from the Palmer LTER data archive were supported by Office of Polar Programs, NSF (OPP-9011927)."

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