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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/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/AdeliePenguinDiet | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinDiet.graph | https://pallter-data.marine.rutgers.edu/erddap/files/AdeliePenguinDiet/ | Adelie penguin diet composition, preliminary analyses of whole lavaged samples, 1991, present. | Adelie penguin diet composition, preliminary analyses of whole lavaged samples, 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\\nAdélie penguin diet samples obtained in the field (see HEADER) are initially drained and weighed and returned to laboratories for further processing. This includes resuspension of the samples in fresh water to release fish otoliths, squid beaks and other prey hard parts, and then draining to a consistency that facilitates separating the diet samples into subsamples of primary and secondary prey components. Primary prey components include krill and fish, and secondary prey components include octopus, squid amphipods, mysid shrimp, limpets and small clams. Each prey component is weighed (total weight) and, if possible, sorted according to species for further analyses. Variability in diets within and between seasons is strongly linked to variability in the marine environment such as the presence or absence of sea ice and the timing and persistence of phytoplankton blooms, and thus affects a host of Adélie penguin life history parameters. \\n\n\ncdm_data_type = Other\nVARIABLES:\nstudy_name (Study)\n... (9 more variables)\n | https://pallter-data.marine.rutgers.edu/erddap/info/AdeliePenguinDiet/index.htmlTable | https://pal.lternet.edu/
| http://pallter-data.marine.rutgers.edu/erddap/rss/AdeliePenguinDiet.rss | https://pallter-data.marine.rutgers.edu/erddap/subscriptions/add.html?datasetID=AdeliePenguinDiet&showErrors=false&email= | National Science Foundation | AdeliePenguinDiet | |||||
| https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinDietLog.subset | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinDietLog | https://pallter-data.marine.rutgers.edu/erddap/tabledap/AdeliePenguinDietLog.graph | https://pallter-data.marine.rutgers.edu/erddap/files/AdeliePenguinDietLog/ | Adelie penguin diet metadata, 1991, present. | Adelie penguin diet metadata, 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\\n\\nAdélie penguin diet samples are obtained during the chick-rearing phase of the breeding season (January -February) using stomach lavage (water off-loading method). Five adult penguins are typically sampled every 5-7 days (weather permitting) during this period by capturing birds near their breeding colonies as they return from foraging in the evenings. Before lavaging, birds are weighed and measured to obtain an index of gender and condition, and are then released at the site where they were initially captured. Variability in adult condition within and between seasons provides an important index of foraging effort and other related metrics. \\n\n\ncdm_data_type = Other\nVARIABLES:\nstudy_name (Study)\ntime (Sample Date/Time, 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/AdeliePenguinDietLog/index.htmlTable | https://pal.lternet.edu/
| http://pallter-data.marine.rutgers.edu/erddap/rss/AdeliePenguinDietLog.rss | https://pallter-data.marine.rutgers.edu/erddap/subscriptions/add.html?datasetID=AdeliePenguinDietLog&showErrors=false&email= | National Science Foundation | AdeliePenguinDietLog | ||||
| https://pallter-data.marine.rutgers.edu/erddap/tabledap/CetaceanBiopsies | https://pallter-data.marine.rutgers.edu/erddap/tabledap/CetaceanBiopsies.graph | https://pallter-data.marine.rutgers.edu/erddap/files/CetaceanBiopsies/ | Skin-blubber biopsy samples and associated demographic data collected from cetaceans encountered along the Western Antarctic Peninsula (WAP), 2010 - present. \\n | The collection of biopsy samples from cetaceans within the near-shore waters of the Western Antarctic Peninsula (WAP) has been led by Dr. Ari Friedlaender starting in 2010. The Friedlaender group just recently joined the Palmer LTER in 2015, but prior collection of samples was leveraged from previous National Science Foundation (NSF) support and existing collaborations with Antarctic tour operations. Collection methods have been kept consistent, as the research group attempts to sample every whale encountered. Our current data set consists of three targeted species for collection, the humpback whale (Megaptera novaeangliae), Antarctic minke whale (Balaenoptera bonaerensis), and killer whales (Orcinus orca). Sample are kept frozen at -80°C until analysis following the completion of annual field work. Collection of these samples is still ongoing. The biopsy ID is the unique identifier for each collected sample and is used as the common field among the different analyses that are conducted on the sample to look at population and individual level demographic information. From these tissue samples, we can extract nuclear and mitochondrial DNA which provides us with information on the genetic sex, genotype (gene fingerprint), as well as haplotype of the individuals sampled. Additionally, from the blubber layer of the biopsy sample, our group can now successfully detect and quantify sex-steroid hormones, one of which is progesterone, that allows us to make inference on the pregnancy status of sampled individuals. Lastly, more recent work has begun to assess the microbial communities on the skin layer of the biopsy samples. Combined, these biological analyses provide an in depth understanding of the current population demographics and dynamics in these recovering marine species. \\n\n\ncdm_data_type = Point\nVARIABLES:\nbiopsy_id\nspecies_code\ntime (seconds since 1970-01-01T00:00:00Z)\nlatitude (degrees_north)\nlongitude (degrees_east)\nsex\ntag_id\nphoto_frames\nhaplotype\ngenotype\nprogresterone\nmicrobiome\n | https://pallter-data.marine.rutgers.edu/erddap/metadata/fgdc/xml/CetaceanBiopsies_fgdc.xml | https://pallter-data.marine.rutgers.edu/erddap/metadata/iso19115/xml/CetaceanBiopsies_iso19115.xml | https://pallter-data.marine.rutgers.edu/erddap/info/CetaceanBiopsies/index.htmlTable | https://pal.lternet.edu/
| http://pallter-data.marine.rutgers.edu/erddap/rss/CetaceanBiopsies.rss | https://pallter-data.marine.rutgers.edu/erddap/subscriptions/add.html?datasetID=CetaceanBiopsies&showErrors=false&email= | National Science Foundation | CetaceanBiopsies |