adforage 9293pal 11jan93-19feb93 Adelie Penguin diet studies during the 92-93 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 and sorted and identified in the lab in accordance with the CEMP (CCAMLR 1992) protocols within 3 hours. One exception to the CEMP procedures to note is that in selecting a krill sample for measurement from the stomach contents of adults, the entire stomach was sorted to obtain the approximately 250 krill needed per sampling period (5 stomachs per period). This was done as a precaution to counter the possibility that very small krill might be missed. 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/9293pal/adforage/header92 ~lter/lterdata/9293pal/adforage/diet92 ~lter/lterdata/9293pal/adforage/krill92 ~lter/lterdata/9293pal/adforage/fish92 ~lter/lterdata/9293pal/adforage/prey92 William R. Fraser Wayne Z. Trivelpiece William R. Fraser William R. Fraser Donna L. Patterson Brent Houston Elise Stephens Lucy Keith (11jan-5feb only) Wayne Trivelpiece (11jan-5feb only) Same personnel listed above. William R. Fraser Donna L. Patterson William R. Fraser 07dec96 Fraser, W.R., W.Z. Trivelpiece, B. Houston and D.L. Patterson. 1993. U.S. seabird research undertaken as part of the CCAMLR Ecosystem Monitoring Program at Palmer Station 1992-1993. Annual Report, National Marine Fisheries Service, La Jolla, California, USA, 33pp. CCAMLR, 1992. Standard Methods for Monitoring Studies. Convention for the Conservation of Antarctic Marine Living Resources Ecosystem Monitoring Program, Hobart, Tasmania, Australia. 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)."

Datafile Form V1.3 for describing a data file.