{ "@context":{"@vocab":"https://schema.org/"}, "@type":"ItemList", "itemListElement": [ { "@type":"ListItem", "position":1, "item":{ "@type":"Dataset", "name":"Mesozooplankton abundance, distribution and composition in the northern Baffin Bay: ArcticNet 2005-2018", "datePublished": "2011-01-28", "dateModified": "2025-04-28", "description":"Zooplankton herbivorous species play an important role in the channeling of energy and organic matter from the primary producers to higher trophic levels occupied by marine vertebrates. Various other processes involved in the biogeochemical flux of carbon in the ocean are mediated by zooplankton. Moreover, in the context of climatic change, a poleward displacement of southern and temperate zooplankton species from the northeast Atlantic and north Pacific is expected. This will bring the unique cold and ice covered Arctic specialized zooplankton assemblages under stronger competitive pressure, possibly resulting in species extinction and major disruptions of the Arctic marine ecosystems that need to be investigated. In these perspectives, knowledge of Arctic zooplankton community structure and diversity in different sectors of the Arctic Ocean needs to be improved in order to start monitoring the evolution of these communities over time. This dataset was produced to describe the zooplankton assemblages and their distribution in the northern Baffin Bay, with a strong emphasis on the North Water polynya region from 2005 to 2018.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=10508", "keywords": [ "Geographic locations -> Baffin Bay", "Geographic locations -> North Water Polynya", "Natural sciences -> Abundance", "Natural sciences -> Biodiversity", "Natural sciences -> Marine ecology", "Natural sciences -> Zooplankton" ], "creator":{ "@type":"Person", "name":"Maxime Geoffroy", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-(709)-778-0499", "email":"maxime.geoffroy@mi.mun.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2005-Aug-12/2021-Oct-31", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"79.0 -79.0 70.0 -69.0" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":2, "item":{ "@type":"Dataset", "name":"Mesozooplankton abundance, distribution and composition in the Canadian Arctic Archipelago: ArcticNet 2005-2018", "datePublished": "2011-01-28", "dateModified": "2025-04-28", "description":"Zooplankton herbivorous species play an important role in the channeling of energy and organic matter from the primary producers to higher trophic levels occupied by marine vertebrates and birds. Various other processes involved in the biogeochemical flux of carbon in the ocean are mediated by zooplankton. Moreover, in the context of climatic change, a poleward displacement of southern and temperate zooplankton species from the northeast Atlantic and north Pacific is expected. This will bring the unique cold and ice covered Arctic specialized zooplankton assemblages under stronger competitive pressure, possibly resulting in species extinction and major disruptions of the Arctic marine ecosystems that need to be investigated. In these perspectives, knowledge of Arctic zooplankton community structure and diversity in different sectors of the Arctic Ocean needs to be improved in order to start monitoring the evolution of these communities over time. This dataset was produced to describe the zooplankton assemblages and their distribution in the Canadian Arctic Archipelago from 2005 to 2018.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=10510", "keywords": [ "Geographic locations -> Barrow Strait", "Geographic locations -> Canadian Arctic Archipelago", "Natural sciences -> Abundance", "Natural sciences -> Biodiversity", "Natural sciences -> Marine ecology", "Natural sciences -> Zooplankton" ], "creator":{ "@type":"Person", "name":"Maxime Geoffroy", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-(709)-778-0499", "email":"maxime.geoffroy@mi.mun.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2005-Aug-20/2021-Nov-2", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"75.0 -120.0 65.0 -80.0" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":3, "item":{ "@type":"Dataset", "name":"Monitoring of Contaminants in Ringed Seals from the Canadian Arctic", "datePublished": "2011-07-21", "dateModified": "2026-01-06", "description":"This study on contaminants in ringed seals is part of the Northern Contaminants Program (NCP), which coordinates Canada's action on northern contaminants, including persistent organic pollutants (POPs), both nationally and internationally. The NCP is a multi-disciplinary initiative addressing health, science and communications issues related to contaminants in Canada's Arctic. The goal of this ringed seal monitoring program, led by four northern communities, is to determine the long-term trends of contaminants in seals in relation with their physical conditions as well as changing environmental factors. Outreach into communities involved in this long-term monitoring is also a priority of this project.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=10780", "keywords": [ "Geographic locations -> Canadian High Arctic", "Geographic locations -> Labrador", "Health sciences and contaminants -> Mercury", "Health sciences and contaminants -> PCBs", "Health sciences and contaminants -> Persistent organic pollutants (POPs)", "Natural sciences -> Community-based monitoring", "Natural sciences -> Contaminants", "Natural sciences -> Marine mammals", "Natural sciences -> Ringed seal", "Natural sciences -> Stable isotope analyses", "Northern communities -> Arviat", "Northern communities -> Nain", "Northern communities -> Resolute", "Northern communities -> Sachs Harbour" ], "creator":{ "@type":"Person", "name":"Magali Houde", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-514-742-5124", "email":"magali.houde@canada.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"1991-Jan-1/Not Defined", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"82.583333 -125.297599 47.75 -61.695356" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":4, "item":{ "@type":"Dataset", "name":"Atmospheric mercury concentrations at Alert, Nunavut, and Little Fox Lake, Yukon", "datePublished": "2010-03-19", "dateModified": "2026-01-16", "description":"As an identified priority of the Northern Contaminants Programme (NCP) and Environment Canada, the objective of this project is continuous monitoring of atmospheric concentrations of mercury at Alert and Little Fox Lake. Using the results, long-term trends of atmospheric mercury concentration levels, deposition patterns, and mercury processes in the Arctic will be assessed. These data will improve our understanding of the impact of mercury pollution on the Arctic environment, wildlife, country foods, and ultimately human health. The long-term objectives of this project are to address existing gaps of knowledge on the behaviour of mercury in the Arctic environment. This will contribute sound scientific information for the negotiation of national and international control actions to ensure the appropriate protection for the Arctic.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=11069", "keywords": [ "Geographic locations -> Arctic", "Geographic locations -> Nunavut", "Geographic locations -> Yukon", "Health sciences and contaminants -> Atmospheric elemental mercury", "Health sciences and contaminants -> Mercury", "Health sciences and contaminants -> Mercury speciation", "Natural sciences -> Air", "Natural sciences -> Atmosphere", "Natural sciences -> Contaminants", "Natural sciences -> Monitoring" ], "creator":{ "@type":"Organization", "url":"https://data-donnees.az.ec.gc.ca/data/air/monitor/monitoring-of-atmospheric-gases/total-gaseous-mercury-tgm/", "name":"Environment and Climate Change Canada", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-4166645385", "email":"geoff.stupple@ec.gc.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"1995-Jan-1/Not Defined", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"83.0 -136.0 61.0 -62.0" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":5, "item":{ "@type":"Dataset", "name":"Moving Vessel Profiling (MVP) data collected by the CCGS Amundsen in the Canadian Arctic", "datePublished": "2015-11-03", "dateModified": "2025-07-15", "description":"The Moving Vessel Profiler (MVP) records temperature, salinity, sound velocity, fluorescence, dissolved oxygen, and transmittance in the water column. Vertical profiles provide information on prevailing physical oceanic conditions during CCGS Amundsen expeditions, aiding in biological, chemical, and physical samplings. They also record parameters for studying physical oceanographic processes in the Canadian Arctic Ocean, including water column structure, water mass characteristics, and oceanic circulation. While data collection extends beyond the Canadian Arctic border, the primary focus is on the Canadian Arctic Ocean.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=12519", "keywords": [ "Geographic locations -> Arctic Ocean", "Geographic locations -> Baffin Bay", "Geographic locations -> Beaufort Sea", "Geographic locations -> Canadian Arctic Archipelago", "Geographic locations -> Chukchi Sea", "Geographic locations -> Greenland", "Geographic locations -> Gulf of St. Lawrence", "Geographic locations -> Hudson Bay", "Geographic locations -> Hudson Strait", "Geographic locations -> Labrador", "Geographic locations -> Nares Strait", "Geographic locations -> Northwest Passage", "Natural sciences -> CTD (Conductivity, Temperature, Depth)", "Natural sciences -> Fluorescence", "Natural sciences -> Transmittance", "Natural sciences -> Water column" ], "creator":{ "@type":"Organization", "url":"http://doi.org/10.5884/12519", "name":"ArcticNet", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-418-656-2411", "email":"pdc@arcticnet.ulaval.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2004-Jun-20/2024-Oct-23", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"81.23 -167.49 48.19 -55.86" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":6, "item":{ "@type":"Dataset", "name":"Snow depth and water equivalence 2014-2025, Apex River watershed, Iqaluit, Nunavut", "datePublished": "2016-04-04", "dateModified": "2026-02-04", "description":"Snow accumulation and melt are critical components of arctic landscape hydrology and are also highly sensitive to weather and climate. With the rapid growth of the community of Iqaluit and reliance on a stable freshwater supply, sustained monitoring of the annual snow conditions provides critical information on the annual spring recharge to Iqaluit's primary and secondary community reservoirs (Lake Geraldine and Qiqiktalik Lake.The main purpose for collecting this dataset is to improve quantification of the annual, end-of-winter snow water equivalent in the Apex River watershed near Iqaluit, NU. A secondary purpose is to establish and continuously evolve an efficient, repeatable survey method that can be conducted each spring out of the community of Iqaluit, while providing experiential learning opportunities for Nunavut Arctic College (NAC) Environmental Technology Program (ETP) students. A final purpose is to use the resulting snow survey datasets to develop and test new methods to model the spatial distribution of snow using remote sensing, GIS-based statistical modelling and machine learning (ML) for use in Iqaluit and other Nunavut communities.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=12684", "keywords": [ "Geographic locations -> Apex River", "Natural sciences -> Hydrology", "Natural sciences -> Snow", "Natural sciences -> Snow water equivalent (SWE)", "Natural sciences -> Water supply", "Natural sciences -> Watershed", "Northern communities -> Iqaluit" ], "creator":{ "@type":"Person", "name":"Murray Richardson", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-613-520-2600 x2574", "email":"murray.richardson@carleton.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2015-Apr-15/Not Defined", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"63.85 -68.63 63.74 -68.43" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":7, "item":{ "@type":"Dataset", "name":"ThermoSalinoGraph (TSG) data collected by the CCGS Amundsen in the Canadian Arctic", "datePublished": "2016-10-20", "dateModified": "2025-07-15", "description":"Provide core physical oceanographic data for all arctic research teams onboard CCGS Amundsen and other interested scientists. The underway ThermoSalinoGraph (TSG) system records data on surface seawater temperature, salinity, fluorescence and sound velocity along the transit route. These data constitute ancillary data for all other data recorded during the CCGS Amundsen scientific expeditions by providing information on the prevailing physical oceanic conditions in which biological, chemical and physical samplings were conducted. They also provide long-term records of the basic parameters central to the study of physical oceanographic processes, more specifically water column structure, water masses characteristics and oceanic circulation, in the Canadian Arctic Ocean.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=12715", "keywords": [ "Geographic locations -> Arctic Ocean", "Natural sciences -> Fluorescence", "Natural sciences -> Salinity", "Natural sciences -> Velocity", "Natural sciences -> Water temperature" ], "creator":{ "@type":"Organization", "url":"http://doi.org/10.5884/12715", "name":"ArcticNet", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-418-656-2411", "email":"pdc@arcticnet.ulaval.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2005-Aug-22/2024-Oct-29", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"81.48 -172.58 46.38 -50.75" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":8, "item":{ "@type":"Dataset", "name":"Metabolomic, Stable Isotope, and Fatty Acid Data in Polar Bears and Ringed Seals from Hudson Bay and the High Arctic, 2015-2016", "datePublished": "2018-09-07", "dateModified": "2026-02-06", "description":"Objectives:1.Improve the scientific understanding of how natural variation in contaminant exposures are related to differences in metabolomic profiles in polar bears 2.Improve the scientific understanding of how diet affects the metabolomic profiles in polar bears from different subpopulations in the Canadian Arctic.3.Establish whether consistent relationships exist as per (1) and (2), which may help identify potential biomarkers indicating differences in diet or contaminant exposure.4.Improve the usefulness and application of metabolomics to field-based environmental monitoring of contaminant exposure and effects.5.Develop a strategy to communicate metabolomics objectives and results to both Southern and Northern governments and communities.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=12954", "keywords": [ "Health sciences and contaminants -> Bioaccumulation", "Health sciences and contaminants -> Brominated diphenyl ethers", "Health sciences and contaminants -> Cumulative effects", "Health sciences and contaminants -> Diet", "Health sciences and contaminants -> Health", "Health sciences and contaminants -> Legacy pesticide", "Health sciences and contaminants -> PCBs", "Health sciences and contaminants -> Perfluorinated alkylated substances" ], "creator":{ "@type":"Person", "name":"Adam Morris", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-(289)259-6089", "email":"adam.morris@canada.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2015-Sep-7/2025-Dec-31", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"75.0 -97.0 51.0 -69.0" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":9, "item":{ "@type":"Dataset", "name":"Zooplankton and ichthyoplankton samples from Lake Melville, Labrador", "datePublished": "2020-02-25", "dateModified": "2026-01-12", "description":"By modifying the seasonal runoff pattern of the Churchill River, in Labrador, the operation of the Muskrat Falls hydroelectric dam could impact estuarine rainbow smelt, trout and salmon downstream. This research project seeks to understand how the operation of the Muskrat Falls dam will modify fish ecology in the 3,000 km2 Lake Melville subarctic estuary. Answering this question is critical to fully understand the impacts of this large-scale hydroelectric project on coastal communities in the region. This dataset provides baseline information for science-based management of fisheries in Lake Melville, where five coastal communities rely heavily on food, social and ceremonial fisheries. Zooplankton sampled with bongo nets provide information on the abundance and composition of prey for early life stages of fish. Ultimately, it will contribute to better predict the effects of future dam developments on fish populations in northern Canada.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13159", "keywords": [ "Geographic locations -> Canada", "Geographic locations -> Lake Melville", "Geographic locations -> Newfoundland", "Natural sciences -> Ichthyoplankton", "Natural sciences -> Larval fishes", "Natural sciences -> Zooplankton" ], "creator":{ "@type":"Person", "name":"Maxime Geoffroy", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-(709)-778-0499", "email":"maxime.geoffroy@mi.mun.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2018-Jun-27/2020-Feb-13", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"55.0 -61.0 53.0 -58.0" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":10, "item":{ "@type":"Dataset", "name":"Active Acoustic data in the Labrador Sea and Canadian Arctic (2017-2025)", "datePublished": "2020-03-23", "dateModified": "2026-01-06", "description":"Climate change has resulted in increased abundances of boreal fish species in the Arctic and altered distributions of indigenous species. Changes in fish composition could result in additional fishing opportunities in the Canadian Arctic. However, while the demersal ecosystem components have received increased attention, the distributions and dynamics of the main pelagic forage fish species (key prey of commercially exploited demersal fish) remain unknown. This project addresses critical knowledge gaps in pelagic ecosystems, which facilitate better forecasting of how ongoing climatic changes will affect fisheries productivity. Acoustic-trawl surveys from the CCGS Amundsen were conducted from 2017 - 2025 to establish baseline knowledge on the occurrence and distribution of Arctic and boreal pelagic fish and zooplankton in Northern Labrador and the Canadian Arctic, and to continue the ArcticNet time-series initiated in 2003. This datasets concerns the hull-mounted acoustic data that were collected from the Amundsen.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13165", "keywords": [ "Geographic locations -> Canada", "Geographic locations -> Canadian Arctic Archipelago", "Geographic locations -> Labrador Sea", "Natural sciences -> Acoustic", "Natural sciences -> Fishes", "Natural sciences -> Zooplankton" ], "creator":{ "@type":"Person", "name":"Maxime Geoffroy", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-(709)-778-0499", "email":"maxime.geoffroy@mi.mun.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2017-Jun-22/2025-Oct-30", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"82.0 -140.0 52.0 -54.0" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":11, "item":{ "@type":"Dataset", "name":"Fish samples in the Labrador Sea and Canadian Arctic (2017-2025)", "datePublished": "2020-03-26", "dateModified": "2026-01-06", "description":"Climate change has resulted in increased abundances of boreal fish species in the Arctic and altered distributions of indigenous species. Changes in fish composition could result in additional fishing opportunities in the Canadian Arctic. However, while the demersal ecosystem components have received increased attention, the distributions and dynamics of the main pelagic forage fish species (key prey of commercially exploited demersal fish) remain unknown. This project addresses critical knowledge gaps in pelagic ecosystems, which facilitate better forecasting of how ongoing climatic changes will affect fisheries productivity. Acoustic-trawl surveys from the CCGS Amundsen were conducted from 2017 - 2025 to establish baseline knowledge on the occurrence and distribution of Arctic and boreal fish and zooplankton in Northern Labrador and the Canadian Arctic, and to continue the ArcticNet time-series initiated in 2003. This datasets concerns the species collected from both mid-water and bottom trawls deployed from CCGS Amundsen.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13167", "keywords": [ "Geographic locations -> Canada", "Geographic locations -> Canadian Arctic Archipelago", "Geographic locations -> Labrador Sea", "Natural sciences -> Abundance", "Natural sciences -> Biodiversity", "Natural sciences -> Ecology", "Natural sciences -> Fishes" ], "creator":{ "@type":"Person", "name":"Maxime Geoffroy", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-(709)-778-0499", "email":"maxime.geoffroy@mi.mun.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2017-Jun-22/2025-Oct-31", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"82.0 -140.0 52.0 -54.0" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":12, "item":{ "@type":"Dataset", "name":"Ichthyoplankton and zooplankton samples in the Labrador Sea and Canadian Arctic (2017-2025)", "datePublished": "2020-03-26", "dateModified": "2026-01-06", "description":"Zooplankton herbivorous species play an important role in the channeling of energy and organic matter from the primary producers to higher trophic levels occupied by marine vertebrates. Knowledge of Arctic zooplankton community structure and diversity in different sectors of the Arctic Ocean needs to be gathered in order to start monitoring the evolution of these communities over time. This project describes the zooplankton assemblages and their distribution in the Labrador Sea and Canadian Arctic from 2017 - 2025. Surveys were conducted aboard the CCGS Amundsen to establish baseline knowledge on the occurrence and distribution of Ichthyoplankton and zooplankton, and to continue the ArcticNet time-series initiated in 2003. This datasets concerns the species collected from zooplankton samplers deployed from CCGS Amundsen.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13168", "keywords": [ "Geographic locations -> Canada", "Geographic locations -> Canadian Arctic Archipelago", "Geographic locations -> Labrador Sea", "Natural sciences -> Abundance", "Natural sciences -> Biodiversity", "Natural sciences -> Marine ecology", "Natural sciences -> Zooplankton" ], "creator":{ "@type":"Person", "name":"Maxime Geoffroy", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-(709)-778-0499", "email":"maxime.geoffroy@mi.mun.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2017-Jun-23/2025-Oct-30", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"82.0 -140.0 52.0 -54.0" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":13, "item":{ "@type":"Dataset", "name":"Ontogenetic profiles of stable isotopes (15N and 13C) in dentine growth layer groups (GLGs) of narwhal embedded teeth", "datePublished": "2021-04-20", "dateModified": "2026-01-16", "description":"Narwhal embedded canines were collected by Inuit during subsistence hunts near Pond Inlet and provided to Fisheries and Oceans Canada through a voluntary collaborative sampling program with the Pond Inlet Hunters and Trappers Association. These harvested narwhals belonged to the Baffin Bay narwhal population, which is monitored by DFO for stock assessment. Stable isotope analysis (SIA) of sequential dentine growth layer groups from narwhal embedded canine teeth can be used to estimate the lifetime diet of individuals and infer major ontogenetic shifts such as the completion of nursing. We used SIA of dentine to investigate ontogenetic dietary patterns, with a focus on nursing duration. We also determined whether nursing duration differed between sexes and between 2 periods during which narwhals may have undergone dietary shifts due to warming. Embedded teeth from both sexes were collected near Pond Inlet, Nunavut, Canada, in 1982 and 1983 (n = 17) and 2015 and 2017 (n = 14). Nursing duration ranged from ~2 to ~6 yr, with 60% of narwhals being nursed beyond the previously published estimate of <2 yr. The proportion of individuals nursed <2 yr versus >2 yr did not differ between sexes or periods. This study not only revealed that narwhals vary extensively in their nursing duration, but also indicated that extended nursing (>2 yr) with gradual introduction of solid food over this period was common. These findings provide insights into narwhal life history strategies, as extended nursing may be another feature of a long-lived, slow-reproducing mammal adapted to unique polar conditions that are threatened by global warming.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13235", "keywords": [ "Natural sciences -> Carbon", "Natural sciences -> Ecology", "Natural sciences -> Narwhals", "Natural sciences -> Nitrogen", "Natural sciences -> Stable isotope analyses", "Natural sciences -> Wildlife" ], "creator":{ "@type":"Person", "name":"Shu-Ting Zhao", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-2048075986", "email":"shuting.zhaost@gmail.com" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"1982-Jun-2/2017-Aug-16", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"72.35633 -81.1066 65.421509 -70.965424" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":14, "item":{ "@type":"Dataset", "name":"Nunatsiavut Plastics Pollution Data-NG-CLEAR", "datePublished": "2023-01-26", "dateModified": "2025-05-06", "description":"This study uses Inuit hunter and fisher-based sampling design for researching plastic ingestion by species important to community members as sources of wild food in Nunatsiavut. Community-based monitoring is important to Inuit and Northern communities. It gives us the power, knowledge, and control over what research we want to do and see in the North. While plastic pollution is a global issue, plastic profiles can differ significantly from place to place and specific concerns about plastics and approaches to plastic research in Inuit Nunangat are a community affair.Nunatsiavummuit already know there is plastic in the environment and are concerned about its presence--Nain was one of the first places in Canada to create a plastic bag ban in 2009. We are now building a bird's eye view of the different types of plastics, especially microplastics; how they are distributed in our foodways, lands, and waters place by place; how their concentrations and ingestion rates by wild food change by season; and which sources of plastics are most significant and available to change in our communities.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13295", "keywords": [ "Natural sciences -> Microplastics", "Natural sciences -> Plastics", "Northern communities -> Hopedale", "Northern communities -> Makkovik", "Northern communities -> Nain", "Northern communities -> Rigolet", "Social sciences, economics and policy -> Environment surveillance" ], "creator":{ "@type":"Person", "name":"Max Liboiron", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-7096935928", "email":"mliboiron@mun.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2017-Jul-3/2026-Mar-30", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"56.54 -61.69 56.54 -61.69" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":15, "item":{ "@type":"Dataset", "name":"Iceberg Beacon Track Database", "datePublished": "2023-10-29", "dateModified": "2026-03-16", "description":"The Iceberg Tracking Beacon Database was developed to make iceberg and ice island drift trajectories public so that they can be used for research. The database contains data collected by academic, industry and government research groups. We recognize that these geographically and temporally variable drift tracks are more useful in a cohesive dataset that can be used for larger analyses than the original data providers may have anticipated. We encourage those who have beacon tracks of icebergs to submit them for inclusion into subsequent versions of this database.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13340", "keywords": [ "Geographic locations -> Arctic Ocean", "Natural sciences -> Database", "Natural sciences -> Glaciology", "Natural sciences -> Ice drift", "Natural sciences -> Ice island", "Natural sciences -> Iceberg", "Natural sciences -> Oceanography", "Social sciences, economics and policy -> Marine navigation" ], "creator":{ "@type":"Person", "name":"Derek Mueller", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-613-520-2600, ext 1984", "email":"derek_mueller@carleton.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"1997-Aug-16/2024-Sep-7", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"82.77 -154.364 46.617 -47.767" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":16, "item":{ "@type":"Dataset", "name":"Evaluating temporal trends of microplastics and plastic additives in Arctic ice cores", "datePublished": "2024-04-30", "dateModified": "2025-05-06", "description":"Plastic pollution is a contaminant of emerging concern in northern latitudes at a national and international level. Microplastics have been documented in a variety of abiotic and biotic compartments across the Arctic including surface water, sediments, invertebrates, seabirds, and marine mammals. To date, there are no studies evaluating the historical deposition via long-range atmospheric transport of microplastic and plastic additives in the Canadian Arctic. In collaboration with the Canadian Ice Core Lab at the University of Alberta, we aimed to evaluate microplastic and plastic additives in archived ice cores to help inform future ice core work in the region. Datasets herein were compiled to include sampling and contaminant data for the NCP funded project M-18. This proposed work aims to evaluate historical temporal trends (from years 1900 to 2024) of microplastics, plastic additives, and other CEACs in ice cores from Mller Ice Cap, Axel Heiberg Island, Nunavut. This work will provide a holistic view of microplastics and plastic additive deposition over time into the Arctic environment. Understanding the types of plastics and plastic chemicals that enter the Arctic will directly inform monitoring priorities to help conserve wildlife and protect human health in the North. Results from this work will be presented in an annual focused workshop at the Nunavut Arctic College in Iqaluit. Translated reports will be provided to the GN, NECC, and other territorial organizations concerned with contaminants. Microplastic and chemical data analysis is ongoing and will be updated as data becomes available.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13372", "keywords": [ "Geographic locations -> Arctic", "Health sciences and contaminants -> Organophosphate flame retardants", "Health sciences and contaminants -> Perfluorinated alkylated substances", "Natural sciences -> Abundance", "Natural sciences -> Cryosphere" ], "creator":{ "@type":"Person", "name":"Bonnie Hamilton", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-2316222872", "email":"bonniemhamilton@gmail.com" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2023-Apr-1/2027-Mar-31", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"90.0 -180.0 50.0 180.0" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":17, "item":{ "@type":"Dataset", "name":"Plastics and associated risks in northern-nesting birds sampled in Nunavut and the Northwest Territories (2024 - 2025)", "datePublished": "2024-05-07", "dateModified": "2026-01-06", "description":"Our main objectives are to build community partnerships and to implement a research program that provides insights about plastics (additives and particles) in Arctic biota. Specifically, we aim to evaluate levels of additives in the eggs and muscles of migratory birds and to determine whether ultrafine plastic particles (<10 m diameter) are present in the consumed tissues of harvested species.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13375", "keywords": [ "Geographic locations -> Northwest Territories", "Geographic locations -> Nunavut", "Natural sciences -> Birds", "Natural sciences -> Breeding", "Natural sciences -> Geese", "Natural sciences -> Microplastics", "Natural sciences -> Plastics" ], "creator":{ "@type":"Person", "name":"Kirsty Gurney", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-306-491-1973", "email":"kirsty.gurney@ec.gc.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2024-May-20/2025-May-25", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"70.0 -130.0 60.0 -100.0" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":18, "item":{ "@type":"Dataset", "name":"PDC test entry Aug 8 2024 - retest in jan 2025 to investigate a user error. retest jul 8 2025", "datePublished": "2024-08-08", "dateModified": "2025-07-08", "description":"test entry for the user input menufurther test of update function 14 augservice unavailable error on a users record so testing this Jan 2025new release test", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13376", "keywords": [ "Geographic locations -> Alaska", "Geographic locations -> Canada", "Geographic locations -> Europe", "Geographic locations -> Finland", "Geographic locations -> Ontario" ], "creator":{ "@type":"Person", "name":"Viv Maclean", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-2899933666", "email":"vjmaclean@uwaterloo.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2024-Aug-8/2024-Aug-8", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"43.4797222 -80.5411111 43.4797222 -80.5411111" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":19, "item":{ "@type":"Dataset", "name":"Discharge of Niaqunguk and tributary streams near Iqaluit, NU, 2023 and 2024", "datePublished": "2024-10-09", "dateModified": "2026-02-03", "description":"Discharge measurments were taken to better understand changing seasonal patterns as well as aid in quantifying the export of important biogeochemical species (ion, anion, water stable isotopes, DOM/DOC/TDN, meatals) in the Niaqunguk River watershed.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13380", "keywords": [ "Natural sciences -> Freshwater flows", "Natural sciences -> Hydrology", "Natural sciences -> Permafrost", "Natural sciences -> River", "Northern communities -> Iqaluit" ], "creator":{ "@type":"Person", "name":"Melissa Lafreniere", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-(613) 533-6000 x78720", "email":"melissa.lafreniere@queensu.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2023-Jun-10/Not Defined", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"63.79 -68.47 63.77 -68.4" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } }, { "@type":"ListItem", "position":20, "item":{ "@type":"Dataset", "name":"Water Chemistry of Niaqunguk and tributary streams near Iqaluit, NU, 2023 -2025", "datePublished": "2024-10-09", "dateModified": "2026-02-03", "description":"Sampling was conducted to investigate spatial and temporal differences in stream water biogeochemical composition (major ions, water stable isotopes, DOM/DOC/TDN, metals) as permafrost thaw progresses in the Niaqunguk River watershed.", "url":"https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13381", "keywords": [ "Geographic locations -> Niaqunguk River", "Natural sciences -> Biogeochemistry", "Natural sciences -> Carbon", "Natural sciences -> Hydrochemistry", "Natural sciences -> Ions concentration", "Natural sciences -> Isotopes", "Natural sciences -> Metals", "Natural sciences -> Nitrogen", "Natural sciences -> Rivers", "Northern communities -> Iqaluit" ], "creator":{ "@type":"Person", "name":"Melissa Lafreniere", "contactPoint":{ "@type":"ContactPoint", "contactType":"technical support", "telephone":"+1-(613) 533-6000 x78720", "email":"melissa.lafreniere@queensu.ca" } }, "includedInDataCatalog":{ "@type":"DataCatalog", "name":"polardata.ca" }, "temporalCoverage":"2023-Jun-10/2023-Aug-8", "spatialCoverage":{ "@type":"Place", "geo":{ "@type":"GeoShape", "box":"63.77 -68.47 63.74 -68.4" } }, "license":"https://www.polardata.ca/pdcinput/public/termsofuse" } } ] }