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| griddap | Subset | tabledap | Make A Graph | wms | files | Title | Summary | FGDC | ISO 19115 | Info | Background Info | RSS | Institution | Dataset ID | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinCensus.subset | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinCensus | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinCensus.graph | https://pallter-data.marine.rutgers.edu/erddap/files/AdeliePenguinCensus/ | Adelie penguin area-wide breeding population census, 1991, present. | Adelie penguin area-wide breeding population census, 1991 - present. The fundamental long-term objective of the seabird component of the Palmer LTER (PAL) has been to identify and understand the mechanistic processes that regulate the mean fitness (population growth rate) of regional penguin populations. Two hypotheses have guided this research, with one suggesting that population mean fitness is best explained by changes in regional krill biomass, and the other proposing that long-term changes in sea ice affects mean fitness by tipping the balance in favor of one species over another in accordance with species-specific evolved life history affinities to sea ice. Although these hypotheses are not mutually exclusive, current evidence in the PAL region tends to favor the latter over the former. Since the inception of PAL, Adélie penguin populations have effectively collapsed, while those of gentoo and chinstrap penguins have increased dramatically, trends that are spatially and temporally coherent with decreasing regional sea ice duration. Adélie penguins are an ice-obligate polar species whose life history is intimately linked to the presence of sea ice, while chinstrap and gentoo penguins are ice-intolerant species whose life histories evolved in the sub-Antarctic, where sea ice is a less permanent feature of the marine ecosystem. In contrast, although krill constitute the most important component of the summer diets by mass of these three penguin species, changes in PAL krill abundances have exhibited no long-term trends, and thus fail to explain the divergent patterns in penguin populations evident in our time series. \\n\\nThe PAL study region includes five main islands on which Adélie penguin colonies have historically occurred. These are censused synoptically once a year to determine the overall size of the breeding population. The optimal census date may vary by a few days each season, but ultimately tries to capture the week following peak egg laying when the total number of breeding pairs reaches a maximum. The timing of this census is assisted by the REPRO and HUMPOP data, which provide a daily to weekly rate of change in breeding adult population numbers as new nests are initiated. This census is useful for a number of assessments, one of the most critical being that it directly reflects the effects of environmental variability on adult overwinter survival.\\n\n\ncdm_data_type = Other\nVARIABLES:\nstudy_name (Study)\ntime (Date GMT, seconds since 1970-01-01T00:00:00Z)\nisland_name (Island)\ncolony_code (Colony)\nnum_breeding_pairs (Breeding Pairs)\n | https://pallter-data.marine.rutgers.edu/erddap/info/AdeliePenguinCensus/index.htmlTable | https://pal.lternet.edu/
| http://pallter-data.marine.rutgers.edu/erddap/rss/AdeliePenguinCensus.rss | https://pallter-data.marine.rutgers.edu/erddap/subscriptions/add.html?datasetID=AdeliePenguinCensus&showErrors=false&email= | National Science Foundation | AdeliePenguinCensus | ||||
| https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinPopulationonHumbleIsland.subset | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinPopulationonHumbleIsland | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinPopulationonHumbleIsland.graph | https://pallter-data.marine.rutgers.edu/erddap/files/AdeliePenguinPopulationonHumbleIsland/ | Adelie penguin breeding population arrival chronology on Humble Island, 1991, present.\\t | Adelie penguin breeding population arrival chronology on Humble Island, 1991 - present.\\t. The fundamental long-term objective of the seabird component of the Palmer LTER (PAL) has been to identify and understand the mechanistic processes that regulate the mean fitness (population growth rate) of regional penguin populations. Two hypotheses have guided this research, with one suggesting that population mean fitness is best explained by changes in regional krill biomass, and the other proposing that long-term changes in sea ice affects mean fitness by tipping the balance in favor of one species over another in accordance with species-specific evolved life history affinities to sea ice. Although these hypotheses are not mutually exclusive, current evidence in the PAL region tends to favor the latter over the former. Since the inception of PAL, Adélie penguin populations have effectively collapsed, while those of gentoo and chinstrap penguins have increased dramatically, trends that are spatially and temporally coherent with decreasing regional sea ice duration. Adélie penguins are an ice-obligate polar species whose life history is intimately linked to the presence of sea ice, while chinstrap and gentoo penguins are ice-intolerant species whose life histories evolved in the sub-Antarctic, where sea ice is a less permanent feature of the marine ecosystem. In contrast, although krill constitute the most important component of the summer diets by mass of these three penguin species, changes in PAL krill abundances have exhibited no long-term trends, and thus fail to explain the divergent patterns in penguin populations evident in our time series. \\n\\nThe arrival chronology of adult Adélie penguins on Humble Island is documented annually through island-wide censuses performed as ice and weather conditions permit. Recorded data (numbers of adults present) provide a measure of the number of adults arriving daily at the breeding colonies, a metric that is sensitive to environmental conditions such as sea ice extent during late winter and early spring. These data are also used in combination with other metrics to determine the optimal window for other, more extensive area-wide breeding population censuses (see CENSUS). \\n\n\ncdm_data_type = Other\nVARIABLES:\nstudy_name (Study)\ntime (Date GMT, seconds since 1970-01-01T00:00:00Z)\nisland_name (Island)\ncolony_code (Colony)\nnum_breeding_pairs (Adults)\n | https://pallter-data.marine.rutgers.edu/erddap/info/AdeliePenguinPopulationonHumbleIsland/index.htmlTable | https://pal.lternet.edu/
| http://pallter-data.marine.rutgers.edu/erddap/rss/AdeliePenguinPopulationonHumbleIsland.rss | https://pallter-data.marine.rutgers.edu/erddap/subscriptions/add.html?datasetID=AdeliePenguinPopulationonHumbleIsland&showErrors=false&email= | National Science Foundation | AdeliePenguinPopulationonHumbleIsland | ||||
| https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinFledglingWeights.subset | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinFledglingWeights | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinFledglingWeights.graph | https://pallter-data.marine.rutgers.edu/erddap/files/AdeliePenguinFledglingWeights/ | Adelie penguin chick fledging weights, 1991, present.\\t | Adelie penguin chick fledging weights, 1991 - present.\\t. The fundamental long-term objective of the seabird component of the Palmer LTER (PAL) has been to identify and understand the mechanistic processes that regulate the mean fitness (population growth rate) of regional penguin populations. Two hypotheses have guided this research, with one suggesting that population mean fitness is best explained by changes in regional krill biomass, and the other proposing that long-term changes in sea ice affects mean fitness by tipping the balance in favor of one species over another in accordance with species-specific evolved life history affinities to sea ice. Although these hypotheses are not mutually exclusive, current evidence in the PAL region tends to favor the latter over the former. Since the inception of PAL, Adélie penguin populations have effectively collapsed, while those of gentoo and chinstrap penguins have increased dramatically, trends that are spatially and temporally coherent with decreasing regional sea ice duration. Adélie penguins are an ice-obligate polar species whose life history is intimately linked to the presence of sea ice, while chinstrap and gentoo penguins are ice-intolerant species whose life histories evolved in the sub-Antarctic, where sea ice is a less permanent feature of the marine ecosystem. In contrast, although krill constitute the most important component of the summer diets by mass of these three penguin species, changes in PAL krill abundances have exhibited no long-term trends, and thus fail to explain the divergent patterns in penguin populations evident in our time series. \\n\\nAdélie penguin chick fledging weights are obtained every two days (or as ice and weather conditions permit) at three beaches on Humble Island beginning when the first fledglings appear on any one of these beaches, and continuing until the last fledglings depart. These data are generally collected during the first three weeks of February by first censusing the total number of chicks present on each beach, and then sub-sampling 30% of the censused population. The metric of interest is the weight (in grams) of individual chicks, which is an important predictor of overwinter survival and thus future recruitment into the population as breeding adults. \\n\n\ncdm_data_type = Other\nVARIABLES:\nstudy_name (Study)\ntime (Date GMT, seconds since 1970-01-01T00:00:00Z)\nisland_name (Island)\ncolony_code (Colony)\nband_number\nweight (gram)\n | https://pallter-data.marine.rutgers.edu/erddap/info/AdeliePenguinFledglingWeights/index.htmlTable | https://pal.lternet.edu/
| http://pallter-data.marine.rutgers.edu/erddap/rss/AdeliePenguinFledglingWeights.rss | https://pallter-data.marine.rutgers.edu/erddap/subscriptions/add.html?datasetID=AdeliePenguinFledglingWeights&showErrors=false&email= | National Science Foundation | AdeliePenguinFledglingWeights | ||||
| https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinAdultandChickCounts.subset | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinAdultandChickCounts | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinAdultandChickCounts.graph | https://pallter-data.marine.rutgers.edu/erddap/files/AdeliePenguinAdultandChickCounts/ | Adelie penguin colony-specific chick production, 1991, present. | Adelie penguin colony-specific chick production, 1991 - present. The fundamental long-term objective of the seabird component of the Palmer LTER (PAL) has been to identify and understand the mechanistic processes that regulate the mean fitness (population growth rate) of regional penguin populations. Two hypotheses have guided this research, with one suggesting that population mean fitness is best explained by changes in regional krill biomass, and the other proposing that long-term changes in sea ice affects mean fitness by tipping the balance in favor of one species over another in accordance with species-specific evolved life history affinities to sea ice. Although these hypotheses are not mutually exclusive, current evidence in the PAL region tends to favor the latter over the former. Since the inception of PAL, Adélie penguin populations have effectively collapsed, while those of gentoo and chinstrap penguins have increased dramatically, trends that are spatially and temporally coherent with decreasing regional sea ice duration. Adélie penguins are an ice-obligate polar species whose life history is intimately linked to the presence of sea ice, while chinstrap and gentoo penguins are ice-intolerant species whose life histories evolved in the sub-Antarctic, where sea ice is a less permanent feature of the marine ecosystem. In contrast, although krill constitute the most important component of the summer diets by mass of these three penguin species, changes in PAL krill abundances have exhibited no long-term trends, and thus fail to explain the divergent patterns in penguin populations evident in our time series. \\n\\nThe PAL study region includes five main islands on which Adélie penguin colonies have historically occurred. These are censused synoptically once a year to determine the total number of chicks produced in the area. The optimal date for this census may vary by a few days each season, but ultimately tries to capture the week following the time when approximately 2/3 of the chicks have crèched. The timing of this census is assisted by the REPRO data, which provide a daily to weekly rate of change in the number of crèched chicks. Because the colonies used in this area-wide census are the same as those used to determine the overall annual breeding population, one of the key metrics obtained is an integrated number of breeding success (chicks crèched/breeding pair). These data have provided valuable insights into the marine and terrestrial factors that influence Adélie penguin mean population fitness. \\n\n\ncdm_data_type = Other\nVARIABLES:\nstudy_name (Study)\n... (6 more variables)\n | https://pallter-data.marine.rutgers.edu/erddap/info/AdeliePenguinAdultandChickCounts/index.htmlTable | https://pal.lternet.edu/
| http://pallter-data.marine.rutgers.edu/erddap/rss/AdeliePenguinAdultandChickCounts.rss | https://pallter-data.marine.rutgers.edu/erddap/subscriptions/add.html?datasetID=AdeliePenguinAdultandChickCounts&showErrors=false&email= | National Science Foundation | AdeliePenguinAdultandChickCounts | ||||
| https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinBandsSeen.subset | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinBandsSeen | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinBandsSeen.graph | https://pallter-data.marine.rutgers.edu/erddap/files/AdeliePenguinBandsSeen/ | Adelie penguin flipper band resightings, 1991, 2006. | Adelie penguin flipper band resightings, 1991 - 2006. The fundamental long-term objective of the seabird component of the Palmer LTER (PAL) has been to identify and understand the mechanistic processes that regulate the mean fitness (population growth rate) of regional penguin populations. Two hypotheses have guided this research, with one suggesting that population mean fitness is best explained by changes in regional krill biomass, and the other proposing that long-term changes in sea ice affects mean fitness by tipping the balance in favor of one species over another in accordance with species-specific evolved life history affinities to sea ice. Although these hypotheses are not mutually exclusive, current evidence in the PAL region tends to favor the latter over the former. Since the inception of PAL, Adélie penguin populations have effectively collapsed, while those of gentoo and chinstrap penguins have increased dramatically, trends that are spatially and temporally coherent with decreasing regional sea ice duration. Adélie penguins are an ice-obligate polar species whose life history is intimately linked to the presence of sea ice, while chinstrap and gentoo penguins are ice-intolerant species whose life histories evolved in the sub-Antarctic, where sea ice is a less permanent feature of the marine ecosystem. In contrast, although krill constitute the most important component of the summer diets by mass of these three penguin species, changes in PAL krill abundances have exhibited no long-term trends, and thus fail to explain the divergent patterns in penguin populations evident in our time series. \\n\\n Annually between 1991 and 1998, a subsample of 1000 Adélie penguin crèche-age chicks were flipper-banded on Humble Island as part of demographic studies to determine long-term survival and recruitment. This was achieved through resighting efforts in the years that followed the banding work through 2006 when the last banded bird was observed. The decision to end the banding studies is in concordance with other national and international efforts to limit this work due to evidence that flipper- banding penguins may affect survival. \\n\n\ncdm_data_type = Other\nVARIABLES:\nindex\nstudy_name (Study)\ntime (Date GMT, seconds since 1970-01-01T00:00:00Z)\nisland_name (Island)\ncolony_code (Colony)\n... (5 more variables)\n | https://pallter-data.marine.rutgers.edu/erddap/info/AdeliePenguinBandsSeen/index.htmlTable | https://pal.lternet.edu/
| http://pallter-data.marine.rutgers.edu/erddap/rss/AdeliePenguinBandsSeen.rss | https://pallter-data.marine.rutgers.edu/erddap/subscriptions/add.html?datasetID=AdeliePenguinBandsSeen&showErrors=false&email= | National Science Foundation | AdeliePenguinBandsSeen | ||||
| https://pallter-data.marine.rutgers.edu/erddap/tabledap/StationBacteria.subset | https://pallter-data.marine.rutgers.edu/erddap/tabledap/StationBacteria | https://pallter-data.marine.rutgers.edu/erddap/tabledap/StationBacteria.graph | https://pallter-data.marine.rutgers.edu/erddap/files/StationBacteria/ | Bacterial properties in discrete water column samples collected during Palmer LTER station seasons at Palmer Station Antarctica, 2002, 2019. | Bacterial properties in discrete water column samples collected during Palmer LTER station seasons at Palmer Station Antarctica, 2002 - 2019. The microbial biogeochemistry component of PAL focuses on marine bacterioplankton, and is thus a counterpart to the phytoplankton and zooplankton components, which together provide a detailed and comprehensive description of plankton ecology in PAL-LTER. Bacteria and Archaea (hereafter called \"bacteria\") are taxonomically and metabolically diverse. In coastal and offshore surface waters Bacteria generally predominate over Archaea, but Archaea are equal or greater in abundance in the mesopelagic layer below the euphoric zone. We focus on aerobic, heterotrophic bacteria in the upper 65 m at Palmer Station which oxidize recently-produced low molecular weight dissolved organic compounds released by phytoplankton and zooplankton, decomposing them back into CO2 and inorganic nutrients. Globally, marine bacteria respire an amount of carbon roughly equal to about half the daily photosynthetic production. In cold polar waters, relative bacterial activity is lower, with bacterial biomass production being equal to <5% of the daily photosynthesis. The ratio at lower latitudes is 10-20%. The factors responsible for this contrast are not entirely clear. Resolving this pattern is a key aim of the PAL microbial component. At Palmer Station, bacterial production is low (< 10 mgC/m2/d) in the winter (polar night) when there is little if any photosynthesis. There is a climatological (2003-14 average) summer peak of 50-60 mgC/m2/d in January-February but with considerable seasonal and annual variability. \\n\\nThe 2016/2017 season data contains bacteria abundances for preserved samples for comparison to abundances from live samples. See the documentation for this in the accompanying file, 2016_live_vs_preserved.pdf.\n\ncdm_data_type = TimeSeries\nVARIABLES:\nstudy_name (Study)\ntime (Date GMT, seconds since 1970-01-01T00:00:00Z)\nlatitude (degrees_north)\nlongitude (degrees_east)\nevent (Event Number)\nstation (Station Name)\ndepth (m)\nbacterial_cell_count (Abundance, count L-1)\n... (5 more variables)\n | https://pallter-data.marine.rutgers.edu/erddap/metadata/fgdc/xml/StationBacteria_fgdc.xml | https://pallter-data.marine.rutgers.edu/erddap/metadata/iso19115/xml/StationBacteria_iso19115.xml | https://pallter-data.marine.rutgers.edu/erddap/info/StationBacteria/index.htmlTable | https://pal.lternet.edu/
| http://pallter-data.marine.rutgers.edu/erddap/rss/StationBacteria.rss | https://pallter-data.marine.rutgers.edu/erddap/subscriptions/add.html?datasetID=StationBacteria&showErrors=false&email= | National Science Foundation | StationBacteria |