Essays about: "Yukon"

Showing result 1 - 5 of 10 essays containing the word Yukon.

  1. 1. Silver Mineralogy and Modes of Occurrence at the Silver Hart Deposit, South East Yukon.

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Michael Ives-Ruyter; [2023]
    Keywords : Canada; Yukon; silver; lead; zinc; galena; sulfosalt; sulfur isotope;

    Abstract : The Silver Hart property is a high grade silver-lead-zinc deposit consisting of polymetallic vein style, manto (carbonate replacement) style, and skarn type mineralization. Host rock consists of calcareous and non-calcareous sediments of the Cassiar Platform, mainly biotite schists, limestone units, and the monzogranite unit of the Cassiar Batholith. READ MORE

  3. 2. Conservation Genomics of the Long-tailed Duck

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Brynhildur Magnúsdóttir; [2021]
    Keywords : Long-tailed duck; migration; conservation; population structure; genome;

    Abstract : With increasingly warming climate, many bird species have been forced to respond to environmental changes, and the long-tailed duck (Clangula hyemalis) is no exception. The populations of the long-tailed duck have been in decline the past few decades and the species is classified as globally vulnerable and near threatened in both Iceland and Sweden. READ MORE

  4. 3. Methane flux from Carex ramenskii on coastal meadows and grazing lawns in western Alaska

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Kaj Lynöe; [2017]
    Keywords : Arctic wetlands; Greenhouse gases; CH4 emission; Plant mediated gas release; Geese grazing;

    Abstract : In this study we determined the magnitude of plant mediated CH4 emission (flux) in two vegetation types of Carex ramenskii. The objectives of this paper were to quantify the proportion of CH4 emissions from plant mediated flux and the total flux (plant and soil). READ MORE

  5. 4. Estimated Input of Mercury to Kusawa Lake, Northern Canada, from Snow and Glacial Melt Water

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Ingrid Beckholmen; [2016]
    Keywords : Mercury; HBV-model; Kusawa Lake; Canada; runoff; glaciers; Kvicksilver; HBV-model; Kusawa Lake; Kanada; avrinning; glaciärer;

    Abstract : Unusually high levels of mercury (Hg) have been detected in several northern Canadian lakes, remote from human industrial activities. At Kusawa Lake, a subalpine glacier-fed mountain lake situated in the Yukon Territory (western Canada), measurements of Hg in caught fish are below, but worryingly close to, the Health Canada guideline for safe fish consumption of 0. READ MORE

  6. 5. Possible Impact from Alaskan Forest Fires on Glaciers of St. Elias Mountains, Yukon Canada

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Cham Hoang; Moa Stangefelt; [2015]
    Keywords : Alaska; St Elias mountains; forest fires; Black Carbon; albedo; HYSPLIT;

    Abstract : How great potential effect does the Black carbon emitted from the boreal forest fire region of Alaska have on the retreating glaciers of the St. Elias Mountains? In this study climate and forest fire history data of Alaska was run in the HYSPLIT wind trajectory model to generate trajectories originated from large occurring fires in Alaska from 2005 to 2014. READ MORE