adbreed 9192pal 10oct91-25feb92 Adelie Penguin breeding success and chronology studies during the 91-92 season. Data files describe the timing of arrival of breeding adults, per pair breeding chronology and reproductive success, the relative abundance of one and two chick broods, colony-specific chick production and chick fledging weights and departure patterns. humpopxx.dat year/month/day, island, colony number, number of adults, reproxx.dat island, colony number, nest site number, egg 1 lay date, egg 2 lay date, egg 1 loss date, egg 2 loss date, chick 1 hatch date, chick 2 hatch date, chick 1 loss date, chick 2 loss date, chick 1 creche date, chick 2 creche date, broodsxx.dat year/month/day, island, colony number, number of nests in sample, number of nests with one chick, number of nests with two chicks, number of nests with eggs, ckcntsxx.dat year/month/day, island, colony number, number of adults, number of chicks, local time, flwtsxx.dat year/month/day, island, location, band number, fledgling weight (g), Unless prevented by weather, most of the data in these files are based on 1-2 day sampling frequencies. Data on the relative abundance of one and two chicks broods and on colony-specific chick production are based on single sampling events (censuses) during the season. Samples were obtained in accordance with the CEMP Standard Methods (CCAMLR 1992), noting the following exceptions: The procedure for determining the number of chicks raised per pair was modified so that the sample of monitored nests was distributed across several penguin colonies, as opposed to a single one. This was done to adequately represent the rookery due to the extreme differences in elevation and exposure exhibited by individual colonies and the nest sites they contain. A different, random sample of nests is used each season. The procedure for determining chick weights at fledging was modified so that only chicks that had been previously flipper banded were included in the sample; this provides an additional, fine scale measure of fledging chronology. The procedure for determining the number of one and two chick broods is not one of the CEMP methods. These censuses begin the day after the first day that chicks show evidence of creching, which in the Palmer area typically brackets the 5-9jan period. In colonies where the number of active nests < 100, the entire colony is censused; where the number > 100, a 100 nest sample is used in a strip transect that is 5 nests wide and runs along the perimeter of the colony for a distance sufficient enough to obtain the sample. Note that the "date" fields in the repro.dat files are based on a numerical sequence where 1 October = day 1 and 29 February = day 152. The experimental design is based on the CEMP Standard Methods (CCAMLR 1992) for determining Adelie penguin breeding success and chronology. antarctica, adelie penguin, breeding success ascii local DBASE online lter ~lter/lterdata/9192pal/adbreed/humpop91 ~lter/lterdata/9192pal/adbreed/repro91 ~lter/lterdata/9192pal/adbreed/broods91 ~lter/lterdata/9192pal/adbreed/ckcnts91 ~lter/lterdata/9192pal/adbreed/flwts91 William R. Fraser Wayne Z. Trivelpiece William R. Fraser William R. Fraser Donna L. Patterson Brent Houston David Keller Wayne Trivelpiece (10oct-20nov only). Same personnel listed above. William R. Fraser Donna L. Patterson 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. 1992. 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. 1992. 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. Key to date fields used to code breeding biology data. 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.