adtelem 9192pal 16jan92-13feb92 Adelie Penguin telemetry studies during the 91-92 season on Humble Island. Files provide general information associated with each of the transmitters deployed and the presence or absence of instrumented birds at the breeding colonies. telhdrxx.dat year.month.day, island, colony number, transmitter frequency, penguin culmen length (mm), penguin culmen depth (mm), penguin sex, number of chicks in the brood, day data logging initiated, time data logging initiated, notes, foragexx.dat julian day/local time, antenna number, transmitter frequency, number of pulses logged, Penguin sex is determined based on culmen size (see CCAMLR 1992). The annual study involves 35-40 breeding adult Adelie penguins, each of which receives a transmitter with an independent frequency. The presence or absence of each frequency at the breeding colonies is sampled once every 20 minutes by automated data logging instruments. Transmitters are glued with 5-minute epoxy to birds feeding 10-14 day old chicks. Transmitters are designed to pulse 60 times a minute, or once every second. Automated data logging instruments search for each frequency once every 20 minutes, spending 12 seconds per scan, per frequency. The data logger is programmed to accept all scans where the number of pulses received is equal to/or greater than 6. The experimental design is based on the CEMP Standard Methods (CCAMLR 1992) for determining penguin foraging trip durations. The only exception to our use of this protocol is that only one member of each breeding pair receives a transmitter. antarctica, adelie penguin, foraging ecology, foraging trip duration ascii local DBASE online lter ~lter/lterdata/9192pal/adtelem/header91 ~lter/lterdata/9192pal/adtelem/forage91 William R. Fraser Wayne Z. Trivelpiece William R. Fraser William R. Fraser Donna L. Patterson Brent Houston David Keller Wayne Trivelpiece was not in the field during the given DATE_RANGE. William R. Fraser William R. Fraser William R. Fraser 07dec96 Fraser, W.R. and W.Z. Trivelpiece 1992. U.S. seabird research undertaken as part of the CCAMLR Ecosystem Monitoring Program at Palmer Station 1991-1992. Annual Report, National Marine Fisheries Service, La Jolla, California, USA, 28pp. Fraser, W.R. 1992. The use of nondestructive sampling techniques for collecting biological samples from seabirds at Palmer Station, Antarctica. Final Report, Wildlife Ecology Program, US-EPA Environmental Research Laboratoty, Corvallis, Oregon, USA, 33pp. Fraser, W.R., W.Z. Trivelpiece, D.G. Ainley and S.G. Trivelpiece. 1992a. Increases in Antarctic penguin populations: reduced competition with whales or a loss of sea ice due to global warming? Polar Biology 11: 525-531. Fraser, W.R., W.Z. Trivelpiece, B. Houston and D.L. Patterson. 1992b. Palmer LTER: Seabird research undertaken during 1991-1992 at Palmer Station, Antarctic Peninsula, Antarctic Journal of the Unites States 27: 249-250. 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 by automated data logging instruments. Quality assurance is determined during two subsequent stages. The first is when data are moved from the data loggers to temporary data files, which is done once every 2 days to look for possible transmitter mechanical failures (e.g. the effects of poor battery or antenna performance especially). The second is when data from the temporary files are moved to the permanent files, in which case the performance of each transmitter is assessed over the course of the season as a whole for pulse pattern irregularities. 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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