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Arctic Seabirds and Shrinking Sea Ice: Egg Analyses Reveal the Importance
www.nature.com/scientificreports OPEN Arctic seabirds and shrinking sea ice: egg analyses reveal the importance of ice-derived resources Fanny Cusset1*, Jérôme Fort2, Mark Mallory3, Birgit Braune4, Philippe Massicotte1 & Guillaume Massé1,5 In the Arctic, sea-ice plays a central role in the functioning of marine food webs and its rapid shrinking has large efects on the biota. It is thus crucial to assess the importance of sea-ice and ice-derived resources to Arctic marine species. Here, we used a multi-biomarker approach combining Highly Branched Isoprenoids (HBIs) with δ13C and δ15N to evaluate how much Arctic seabirds rely on sea-ice derived resources during the pre-laying period, and if changes in sea-ice extent and duration afect their investment in reproduction. Eggs of thick-billed murres (Uria lomvia) and northern fulmars (Fulmarus glacialis) were collected in the Canadian Arctic during four years of highly contrasting ice conditions, and analysed for HBIs, isotopic (carbon and nitrogen) and energetic composition. Murres heavily relied on ice-associated prey, and sea-ice was benefcial for this species which produced larger and more energy-dense eggs during icier years. In contrast, fulmars did not exhibit any clear association with sympagic communities and were not impacted by changes in sea ice. Murres, like other species more constrained in their response to sea-ice variations, therefore appear more sensitive to changes and may become the losers of future climate shifts in the Arctic, unlike more resilient species such as fulmars. Sea ice plays a central role in polar marine ecosystems; it drives the phenology of primary producers that con- stitute the base of marine food webs. -
Northwest Passage: Fury & Hecla
NORTHWEST PASSAGE: FURY & HECLA On this active expedition, well visit some of the main highlights of the fabled Northwest Passage, a sea route long-known to sailors around the world for its formidable channels. Traversing this passage was considered the greatest geographical quest for the last three centuries, tempting renowned explorers such as Roald Amundsen and Sir John Franklin. From landscapes to icescapes to seascapes, well explore some of the regions most interesting and stunning landmarks. MANDATORY TRANSFER PACKAGE INCLUDES: One night airport hotel accommodation in Edmonton with breakfast Flight from Edmonton to Kugluktuk Transfers to and from ship to hotel Flight from Kangerlussuaq to Ottawa One night hotel accommodation in Ottawa with breakfast Group transfer Ottawa airport ITINERARY Day 1 Edmonton, Alberta, Canada Enjoy an included night in Edmonton, Alberta and meet your fellow travelers. Day 2 Kugluktuk, Nunavut Kugluktuk meaning place of moving water is aptly named, as the beautiful Kugluk cascade can be found here. In the summertime, so can wildflowers, berry plants and green grasses. We will arrive by way of our group charter flight and then transfer to our small expedition ship. Enjoy your first night on board as you meet your expedition team, the captain and his 01432 507 280 (within UK) [email protected] | small-cruise-ships.com officers, and take part in introductory briefings. We sail eastward through Bellot Strait, a narrow channel separating mainland North America from Somerset Island. Day 3 Port Epworth About mid-point through the channel is the northernmost area Your first views will be that of the expansive landscapes of Port of the continental land mass, Zenith Point. -
Arctic Marine Transport Workshop 28-30 September 2004
Arctic Marine Transport Workshop 28-30 September 2004 Institute of the North • U.S. Arctic Research Commission • International Arctic Science Committee Arctic Ocean Marine Routes This map is a general portrayal of the major Arctic marine routes shown from the perspective of Bering Strait looking northward. The official Northern Sea Route encompasses all routes across the Russian Arctic coastal seas from Kara Gate (at the southern tip of Novaya Zemlya) to Bering Strait. The Northwest Passage is the name given to the marine routes between the Atlantic and Pacific oceans along the northern coast of North America that span the straits and sounds of the Canadian Arctic Archipelago. Three historic polar voyages in the Central Arctic Ocean are indicated: the first surface shop voyage to the North Pole by the Soviet nuclear icebreaker Arktika in August 1977; the tourist voyage of the Soviet nuclear icebreaker Sovetsky Soyuz across the Arctic Ocean in August 1991; and, the historic scientific (Arctic) transect by the polar icebreakers Polar Sea (U.S.) and Louis S. St-Laurent (Canada) during July and August 1994. Shown is the ice edge for 16 September 2004 (near the minimum extent of Arctic sea ice for 2004) as determined by satellite passive microwave sensors. Noted are ice-free coastal seas along the entire Russian Arctic and a large, ice-free area that extends 300 nautical miles north of the Alaskan coast. The ice edge is also shown to have retreated to a position north of Svalbard. The front cover shows the summer minimum extent of Arctic sea ice on 16 September 2002. -
Wildlife Regions Regulations Règlement Sur Les Régions R-108-98 Fauniques R-108-98
WILDLIFE ACT LOI SUR LA FAUNE WILDLIFE REGIONS REGULATIONS RÈGLEMENT SUR LES RÉGIONS R-108-98 FAUNIQUES R-108-98 INCLUDING AMENDMENTS MADE BY MODIFIÉ PAR R-075-99 (CIF 31/08/99) R-075-99 (EEV 1999-08-31) This consolidation is not an official statement of the La présente codification administrative ne constitue pas law. It is an office consolidation prepared by le texte officiel de la loi; elle n'est établie qu'à titre Legislation Division, Department of Justice, for documentaire par les Affaires législatives du ministère convenience of reference only. The authoritative text de la Justice. Seuls les règlements contenus dans les of regulations can be ascertained from the Revised Règlements révisés des Territoires du Nord-Ouest Regulations of the Northwest Territories, 1990 and the (1990) et dans les parutions mensuelles de la Partie II monthly publication of Part II of the Northwest de la Gazette des Territoires du Nord-Ouest ont force Territories Gazette. de loi. Copies of this consolidation and other Government of On peut également obtenir des copies de la présente the Northwest Territories publications can be obtained codification et d'autres publications du gouvernement at the following address: des Territoires du Nord-Ouest en communiquant avec : Canarctic Graphics Canarctic Graphics 5102-50th Street 5102, 50e Rue P.O. Box 2758 C.P. 2758 Yellowknife NT X1A 2R1 Yellowknife NT X1A 2R1 Telephone: (867) 873-5924 Téléphone : (867) 873-5924 Fax: (867) 920-4371 Télécopieur : (867) 920-4371 WILDLIFE ACT LOI SUR LA FAUNE WILDLIFE REGIONS RÈGLEMENT SUR LES RÉGIONS REGULATIONS FAUNIQUES The Commissioner, on the recommendation of the Le commissaire, sur la recommendation du Minister, under section 98 of the Wildlife Act and every ministre, en vertu de l’article 98 de la Loi sur la faune enabling power, makes the Wildlife Regions et de tout pouvoir habilitant, prend le Règlement sur les Regulations. -
Stream Sediment and Stream Water OG SU Alberta Geological Survey (MITE) ICAL 95K 85J 95J 85K of 95I4674 85L
Natural Resources Ressources naturelles Canada Canada CurrentCurrent and and Upcoming Upcoming NGR NGR Program Program Activities Activities in in British British Columbia, Columbia, NationalNational Geochemical Geochemical Reconnaissance Reconnaissance NorthwestNorthwest Territories, Territories, Yukon Yukon Territory Territory and and Alberta, Alberta, 2005-06 2005-06 ProgrProgrammeamme National National de de la la Reconnaissance Reconnaissance Géochimique Géochimique ActivitésActivités En-cours En-cours et et Futures Futures du du Programme Programme NRG NRG en en Colombie Colombie Britannique, Britannique, P.W.B.P.W.B. Friske, Friske,S.J.A.S.J.A. Day, Day, M.W. M.W. McCurdy McCurdy and and R.J. R.J. McNeil McNeil auau Territoires Territoires de du Nord-Ouest, Nord-Ouest, au au Territoire Territoire du du Yukon Yukon et et en en Alberta, Alberta, 2005-06 2005-06 GeologicalGeological Survey Survey of of Canada Canada 601601 Booth Booth St, St, Ottawa, Ottawa, ON ON 11 Area: Edéhzhie (Horn Plateau), NT 55 Area: Old Crow, YT H COLU Survey was conducted in conjunction with Survey was conducted in conjunction with and funded by IS M EUB IT B and funded by NTGO, INAC and NRCAN. NORTHWEST TERRITORIES R I the Yukon Geological Survey and NRCAN. Data will form A 124° 122° 120° 118° 116° B Alberta Energy and Utilities Board Data will form the basis of a mineral potential GEOSCIENCE 95N 85O the basis of a mineral potential evaluation as part of a 95O 85N evaluation as part of a larger required 95P 85M larger required Resource Assessment. OFFICE .Wrigley RESEARCH ANALYSIS INFORMATION Resource Assessment. .Wha Ti G 63° YUKON 63° Metals in the Environment (MITE) E Y AGS ESS Program: O E ESS Program: Metals in the Environment V .Rae-Edzo L R GSEOLOGICAL URVEY Survey Type: Stream Sediment and Stream Water OG SU Alberta Geological Survey (MITE) ICAL 95K 85J 95J 85K OF 95I4674 85L Survey Type: Stream Sediment, stream M Year of Collection: 2004 and 2005 A C K ENZI E R 2 62° I V water, bulk stream sediment (HMCs and KIMs). -
Transits of the Northwest Passage to End of the 2020 Navigation Season Atlantic Ocean ↔ Arctic Ocean ↔ Pacific Ocean
TRANSITS OF THE NORTHWEST PASSAGE TO END OF THE 2020 NAVIGATION SEASON ATLANTIC OCEAN ↔ ARCTIC OCEAN ↔ PACIFIC OCEAN R. K. Headland and colleagues 7 April 2021 Scott Polar Research Institute, University of Cambridge, Lensfield Road, Cambridge, United Kingdom, CB2 1ER. <[email protected]> The earliest traverse of the Northwest Passage was completed in 1853 starting in the Pacific Ocean to reach the Atlantic Oceam, but used sledges over the sea ice of the central part of Parry Channel. Subsequently the following 319 complete maritime transits of the Northwest Passage have been made to the end of the 2020 navigation season, before winter began and the passage froze. These transits proceed to or from the Atlantic Ocean (Labrador Sea) in or out of the eastern approaches to the Canadian Arctic archipelago (Lancaster Sound or Foxe Basin) then the western approaches (McClure Strait or Amundsen Gulf), across the Beaufort Sea and Chukchi Sea of the Arctic Ocean, through the Bering Strait, from or to the Bering Sea of the Pacific Ocean. The Arctic Circle is crossed near the beginning and the end of all transits except those to or from the central or northern coast of west Greenland. The routes and directions are indicated. Details of submarine transits are not included because only two have been reported (1960 USS Sea Dragon, Capt. George Peabody Steele, westbound on route 1 and 1962 USS Skate, Capt. Joseph Lawrence Skoog, eastbound on route 1). Seven routes have been used for transits of the Northwest Passage with some minor variations (for example through Pond Inlet and Navy Board Inlet) and two composite courses in summers when ice was minimal (marked ‘cp’). -
Summary of the Hudson Bay Marine Ecosystem Overview
i SUMMARY OF THE HUDSON BAY MARINE ECOSYSTEM OVERVIEW by D.B. STEWART and W.L. LOCKHART Arctic Biological Consultants Box 68, St. Norbert P.O. Winnipeg, Manitoba CANADA R3V 1L5 for Canada Department of Fisheries and Oceans Central and Arctic Region, Winnipeg, Manitoba R3T 2N6 Draft March 2004 ii Preface: This report was prepared for Canada Department of Fisheries and Oceans, Central And Arctic Region, Winnipeg. MB. Don Cobb and Steve Newton were the Scientific Authorities. Correct citation: Stewart, D.B., and W.L. Lockhart. 2004. Summary of the Hudson Bay Marine Ecosystem Overview. Prepared by Arctic Biological Consultants, Winnipeg, for Canada Department of Fisheries and Oceans, Winnipeg, MB. Draft vi + 66 p. iii TABLE OF CONTENTS 1.0 INTRODUCTION.........................................................................................................................1 2.0 ECOLOGICAL OVERVIEW.........................................................................................................3 2.1 GEOLOGY .....................................................................................................................4 2.2 CLIMATE........................................................................................................................6 2.3 OCEANOGRAPHY .........................................................................................................8 2.4 PLANTS .......................................................................................................................13 2.5 INVERTEBRATES AND UROCHORDATES.................................................................14 -
Hudson Bay Ice Conditions
Hudson Bay Ice Conditions ERIC W. DANIELSON, JR.l ABSTRACT.Monthly mean ice cover distributions for Hudson Bay have been derived, based upon an analysis of nine years of aerial reconnaissance and other data. Information is presented in map form, along with diseussian Of significant features. Ice break-up is seen to work southward from the western, northern, and eastern edges of the Bay; the pattern seems to be a result of local topography, cur- rents, and persistent winds. Final melting occurs in August. Freeze-up commences in October, along the northwestern shore, and proceeds southeastward. The entire Bay is ice-covered by early January,except for persistent shore leads. RÉSUMÉ. Conditions de la glace dans la mer d’Hudson. A partir de l’analyse de neuf années de reconnaissances aériennes et d’autres données, on a pu déduire des moyennes mensuelles de distribution de la glace pour la mer d’Hudson. L‘informa- tion est présentte sous formes de cartes et de discussion des Cléments significatifs. On y voit que la débâcle progresse vers le sud à partir des marges ouest, nord et est dela mer; cette séquence sembleêtre le résultat de la topographielocale, des courants et .des vents dominants. La fonte se termine en aofit. L’enge€wommence en octobre le long de la rive nord-ouest et progresse vers le sud-est. Sauf pow les chenaux côtiers persistants, la mer est entihrement gelée au début de janvier. INTRODUCTION In many respects, ice cover is a basic hydrometeorological variable. In Hudson Bay (Fig. 1) it might be considered the most basic of all, as it influences all other conditions so decisively. -
Who Discovered the Northwest Passage? Janice Cavell1
ARCTIC VOL. 71, NO.3 (SEPTEMBER 2018) P.292 – 308 https://doi.org/10.14430/arctic4733 Who Discovered the Northwest Passage? Janice Cavell1 (Received 31 January 2018; accepted in revised form 1 May 2018) ABSTRACT. In 1855 a parliamentary committee concluded that Robert McClure deserved to be rewarded as the discoverer of a Northwest Passage. Since then, various writers have put forward rival claims on behalf of Sir John Franklin, John Rae, and Roald Amundsen. This article examines the process of 19th-century European exploration in the Arctic Archipelago, the definition of discovering a passage that prevailed at the time, and the arguments for and against the various contenders. It concludes that while no one explorer was “the” discoverer, McClure’s achievement deserves reconsideration. Key words: Northwest Passage; John Franklin; Robert McClure; John Rae; Roald Amundsen RÉSUMÉ. En 1855, un comité parlementaire a conclu que Robert McClure méritait de recevoir le titre de découvreur d’un passage du Nord-Ouest. Depuis lors, diverses personnes ont avancé des prétentions rivales à l’endroit de Sir John Franklin, de John Rae et de Roald Amundsen. Cet article se penche sur l’exploration européenne de l’archipel Arctique au XIXe siècle, sur la définition de la découverte d’un passage en vigueur à l’époque, de même que sur les arguments pour et contre les divers prétendants au titre. Nous concluons en affirmant que même si aucun des explorateurs n’a été « le » découvreur, les réalisations de Robert McClure méritent d’être considérées de nouveau. Mots clés : passage du Nord-Ouest; John Franklin; Robert McClure; John Rae; Roald Amundsen Traduit pour la revue Arctic par Nicole Giguère. -
In Arctic and Subarctic Seas, and the Modifying Ejfects of Hydrographic Differences in the Environment'
The Journal of Marine Research is an online peer-reviewed journal that publishes original research on a broad array of topics in physical, biological, and chemical oceanography. In publication since 1937, it is one of the oldest journals in American marine science and occupies a unique niche within the ocean sciences, with a rich tradition and distinguished history as part of the Sears Foundation for Marine Research at Yale University. Past and current issues are available at journalofmarineresearch.org. Yale University provides access to these materials for educational and research purposes only. Copyright or other proprietary rights to content contained in this document may be held by individuals or entities other than, or in addition to, Yale University. You are solely responsible for determining the ownership of the copyright, and for obtaining permission for your intended use. Yale University makes no warranty that your distribution, reproduction, or other use of these materials will not infringe the rights of third parties. This work is licensed under the Creative Commons Attribution- NonCommercial-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA. Journal of Marine Research, Sears Foundation for Marine Research, Yale University PO Box 208118, New Haven, CT 06520-8118 USA (203) 432-3154 fax (203) 432-5872 [email protected] www.journalofmarineresearch.org The Life Cycle of Sagitta elegans in Arctic and Subarctic Seas, and the Modifying Ejfects of Hydrographic Differences in the Environment' M. -
Arctic Cephalopod Distributions and Their Associated Predatorspor 146 209..227 Kathleen Gardiner & Terry A
Arctic cephalopod distributions and their associated predatorspor_146 209..227 Kathleen Gardiner & Terry A. Dick Biological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada Keywords Abstract Arctic Ocean; Canada; cephalopods; distributions; oceanography; predators. Cephalopods are key species of the eastern Arctic marine food web, both as prey and predator. Their presence in the diets of Arctic fish, birds and mammals Correspondence illustrates their trophic importance. There has been considerable research on Terry A. Dick, Biological Sciences, University cephalopods (primarily Gonatus fabricii) from the north Atlantic and the west of Manitoba, Winnipeg, Manitoba R3T 2N2, side of Greenland, where they are considered a potential fishery and are taken Canada. E-mail: [email protected] as a by-catch. By contrast, data on the biogeography of Arctic cephalopods are doi:10.1111/j.1751-8369.2010.00146.x still incomplete. This study integrates most known locations of Arctic cepha- lopods in an attempt to locate potential areas of interest for cephalopods, and the predators that feed on them. International and national databases, museum collections, government reports, published articles and personal communica- tions were used to develop distribution maps. Species common to the Canadian Arctic include: G. fabricii, Rossia moelleri, R. palpebrosa and Bathypolypus arcticus. Cirroteuthis muelleri is abundant in the waters off Alaska, Davis Strait and Baffin Bay. Although distribution data are still incomplete, groupings of cephalopods were found in some areas that may be correlated with oceanographic variables. Understanding species distributions and their interactions within the ecosys- tem is important to the study of a warming Arctic Ocean and the selection of marine protected areas. -
POLYNYAS in the CANADIAN ARCTIC Analysis of MODIS Sea Ice Temperature Data Between June 2002 and July 2013
Canatec Associates International Ltd. POLYNYAS IN THE CANADIAN ARCTIC Analysis of MODIS Sea Ice Temperature Data Between June 2002 and July 2013 David Currie 7/16/2014 Using daily sea ice temperature grids produced from MODIS optical satellite imagery, polynya occurrences in the Canadian Arctic and Northwest Greenland were mapped with a spatial resolution of one square kilometer and a temporal resolution of one week. The eleven year dataset was used to identify and measure locations with a high probability of open water occurrence. This approach appears to be most suitable for the spring months, when polynyas and shore leads represent the only open water in the region. An analysis of the results at several geographic scales reveals considerable yearly variation in polynya extents, although the relatively short period studied makes identifying trends rather difficult. Contents Introduction ................................................................................................................................................................ 3 Goals ............................................................................................................................................................................... 5 Source Data ................................................................................................................................................................. 6 MODIS Sea Ice Temperature Product MOD29/MYD29 ....................................................................... 6 Landsat Quicklook