Low Arctic Tundra
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
"National List of Vascular Plant Species That Occur in Wetlands: 1996 National Summary."
Intro 1996 National List of Vascular Plant Species That Occur in Wetlands The Fish and Wildlife Service has prepared a National List of Vascular Plant Species That Occur in Wetlands: 1996 National Summary (1996 National List). The 1996 National List is a draft revision of the National List of Plant Species That Occur in Wetlands: 1988 National Summary (Reed 1988) (1988 National List). The 1996 National List is provided to encourage additional public review and comments on the draft regional wetland indicator assignments. The 1996 National List reflects a significant amount of new information that has become available since 1988 on the wetland affinity of vascular plants. This new information has resulted from the extensive use of the 1988 National List in the field by individuals involved in wetland and other resource inventories, wetland identification and delineation, and wetland research. Interim Regional Interagency Review Panel (Regional Panel) changes in indicator status as well as additions and deletions to the 1988 National List were documented in Regional supplements. The National List was originally developed as an appendix to the Classification of Wetlands and Deepwater Habitats of the United States (Cowardin et al.1979) to aid in the consistent application of this classification system for wetlands in the field.. The 1996 National List also was developed to aid in determining the presence of hydrophytic vegetation in the Clean Water Act Section 404 wetland regulatory program and in the implementation of the swampbuster provisions of the Food Security Act. While not required by law or regulation, the Fish and Wildlife Service is making the 1996 National List available for review and comment. -
Baffin Bay Sea Ice Inflow and Outflow: 1978–1979 to 2016–2017
The Cryosphere, 13, 1025–1042, 2019 https://doi.org/10.5194/tc-13-1025-2019 © Author(s) 2019. This work is distributed under the Creative Commons Attribution 4.0 License. Baffin Bay sea ice inflow and outflow: 1978–1979 to 2016–2017 Haibo Bi1,2,3, Zehua Zhang1,2,3, Yunhe Wang1,2,4, Xiuli Xu1,2,3, Yu Liang1,2,4, Jue Huang5, Yilin Liu5, and Min Fu6 1Key laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China 2Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China 3Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China 4University of Chinese Academy of Sciences, Beijing, China 5Shandong University of Science and Technology, Qingdao, China 6Key Laboratory of Research on Marine Hazard Forecasting Center, National Marine Environmental Forecasting Center, Beijing, China Correspondence: Haibo Bi ([email protected]) Received: 2 July 2018 – Discussion started: 23 July 2018 Revised: 19 February 2019 – Accepted: 26 February 2019 – Published: 29 March 2019 Abstract. Baffin Bay serves as a huge reservoir of sea ice 1 Introduction which would provide the solid freshwater sources to the seas downstream. By employing satellite-derived sea ice motion and concentration fields, we obtain a nearly 40-year-long Baffin Bay is a semi-enclosed ocean basin that connects the Arctic Ocean and the northwestern Atlantic (Fig. 1). It cov- record (1978–1979 to 2016–2017) of the sea ice area flux 2 through key fluxgates of Baffin Bay. Based on the estimates, ers an area of 630 km and is bordered by Greenland to the the Baffin Bay sea ice area budget in terms of inflow and east, Baffin Island to the west, and Ellesmere Island to the outflow are quantified and possible causes for its interan- north. -
Consensus Statement
Arctic Climate Forum Consensus Statement 2020-2021 Arctic Winter Seasonal Climate Outlook (along with a summary of 2020 Arctic Summer Season) CONTEXT Arctic temperatures continue to warm at more than twice the global mean. Annual surface air temperatures over the last 5 years (2016–2020) in the Arctic (60°–85°N) have been the highest in the time series of observations for 1936-20201. Though the extent of winter sea-ice approached the median of the last 40 years, both the extent and the volume of Arctic sea-ice present in September 2020 were the second lowest since 1979 (with 2012 holding minimum records)2. To support Arctic decision makers in this changing climate, the recently established Arctic Climate Forum (ACF) convened by the Arctic Regional Climate Centre Network (ArcRCC-Network) under the auspices of the World Meteorological Organization (WMO) provides consensus climate outlook statements in May prior to summer thawing and sea-ice break-up, and in October before the winter freezing and the return of sea-ice. The role of the ArcRCC-Network is to foster collaborative regional climate services amongst Arctic meteorological and ice services to synthesize observations, historical trends, forecast models and fill gaps with regional expertise to produce consensus climate statements. These statements include a review of the major climate features of the previous season, and outlooks for the upcoming season for temperature, precipitation and sea-ice. The elements of the consensus statements are presented and discussed at the Arctic Climate Forum (ACF) sessions with both providers and users of climate information in the Arctic twice a year in May and October, the later typically held online. -
Dukes County Intelligencer
Journal of History of Martha’s Vineyard and the Elizabeth Islands THE DUKES COUNTY INTELLIGENCER VOL. 55, NO. 1 WINTER 2013 Left Behind: George Cleveland, George Fred Tilton & the Last Whaler to Hudson Bay Lagoon Heights Remembrances The Big One: Hurricane of ’38 Membership Dues Student ..........................................$25 Individual .....................................$55 (Does not include spouse) Family............................................$75 Sustaining ...................................$125 Patron ..........................................$250 Benefactor...................................$500 President’s Circle ......................$1000 Memberships are tax deductible. For more information on membership levels and benefits, please visit www.mvmuseum.org To Our Readers his issue of the Dukes County Intelligencer is remarkable in its diver- Tsity. Our lead story comes from frequent contributor Chris Baer, who writes a swashbuckling narrative of two of the Vineyard’s most adventur- ous, daring — and quirky — characters, George Cleveland and George Fred Tilton, whose arctic legacies continue to this day. Our second story came about when Florence Obermann Cross suggested to a gathering of old friends that they write down their childhood memories of shared summers on the Lagoon. The result is a collective recollection of cottages without electricity or water; good neighbors; artistic and intellectual inspiration; sailing, swimming and long-gone open views. This is a slice of Oak Bluffs history beyond the more well-known Cottage City and Campground stories. Finally, the Museum’s chief curator, Bonnie Stacy, has reminded us that 75 years ago the ’38 hurricane, the mother of them all, was unannounced and deadly, even here on Martha’s Vineyard. — Susan Wilson, editor THE DUKES COUNTY INTELLIGENCER VOL. 55, NO. 1 © 2013 WINTER 2013 Left Behind: George Cleveland, George Fred Tilton and the Last Whaler to Hudson Bay by Chris Baer ...................................................................................... -
Rare Vascular Plant Surveys in the Polletts Cove and Lahave River Areas of Nova Scotia
Rare Vascular Plant Surveys in the Polletts Cove and LaHave River areas of Nova Scotia David Mazerolle, Sean Blaney and Alain Belliveau Atlantic Canada Conservation Data Centre November 2014 ACKNOWLEDGEMENTS This project was funded by the Nova Scotia Department of Natural Resources, through their Species at Risk Conservation Fund. The Atlantic Canada Conservation Data Centre appreciates the opportunity provided by the fund to have visited these botanically significant areas. We also thank Sean Basquill for mapping, fieldwork and good company on our Polletts Cove trip, and Cape Breton Highlands National Park for assistance with vehicle transportation at the start of that trip. PHOTOGRAPHY CREDITS All photographs included in this report were taken by the authors. 1 INTRODUCTION This project, funded by the Nova Scotia Species at Risk Conservation Fund, focused on two areas of high potential for rare plant occurrence: 1) the Polletts Cove and Blair River system in northern Cape Breton, covered over eight AC CDC botanist field days; and 2) the lower, non-tidal 29 km and selected tidal portions of the LaHave River in Lunenburg County, covered over 12 AC CDC botanist field days. The Cape Breton Highlands support a diverse array of provincially rare plants, many with Arctic or western affinity, on cliffs, river shores, and mature deciduous forests in the deep ravines (especially those with more calcareous bedrock and/or soil) and on the peatlands and barrens of the highland plateau. Recent AC CDC fieldwork on Lockhart Brook, Big Southwest Brook and the North Aspy River sites similar to the Polletts Cove and Blair River valley was very successful, documenting 477 records of 52 provincially rare plant species in only five days of fieldwork. -
Full-Fit Reconstruction of the Labrador Sea and Baffin
Solid Earth, 4, 461–479, 2013 Open Access www.solid-earth.net/4/461/2013/ doi:10.5194/se-4-461-2013 Solid Earth © Author(s) 2013. CC Attribution 3.0 License. Full-fit reconstruction of the Labrador Sea and Baffin Bay M. Hosseinpour1, R. D. Müller1, S. E. Williams1, and J. M. Whittaker2 1EarthByte Group, School of Geosciences, University of Sydney, Sydney, NSW 2006, Australia 2Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS 7005, Australia Correspondence to: M. Hosseinpour ([email protected]) Received: 7 June 2013 – Published in Solid Earth Discuss.: 8 July 2013 Revised: 25 September 2013 – Accepted: 3 October 2013 – Published: 26 November 2013 Abstract. Reconstructing the opening of the Labrador Sea Our favoured model implies that break-up and formation of and Baffin Bay between Greenland and North America re- continent–ocean transition (COT) first started in the south- mains controversial. Recent seismic data suggest that mag- ern Labrador Sea and Davis Strait around 88 Ma and then netic lineations along the margins of the Labrador Sea, orig- propagated north and southwards up to the onset of real inally interpreted as seafloor spreading anomalies, may lie seafloor spreading at 63 Ma in the Labrador Sea. In Baffin within the crust of the continent–ocean transition. These Bay, continental stretching lasted longer and actual break-up data also suggest a more seaward extent of continental crust and seafloor spreading started around 61 Ma (chron 26). within the Greenland margin near Davis Strait than assumed in previous full-fit reconstructions. Our study focuses on re- constructing the full-fit configuration of Greenland and North America using an approach that considers continental defor- 1 Introduction mation in a quantitative manner. -
Integrating Arctic Plant and Microbial Ecology ‐ 21St ITEX Meeting ‐ September 16‐18 2015
Abstracts: Integrating Arctic Plant and Microbial Ecology ‐ 21st ITEX meeting ‐ September 16‐18 2015 Integrating Arctic Plant and Microbial Ecology ‐ 21st ITEX meeting ORAL PRESENTATIONS: O1. Impacts of winter snow on plants and microbes in a mountain peatland Ellen Dorrepaal1,2, Vincent Jassey2,3, Constant Signarbieux2,3, Rob Mills2,3, Alexandre Buttler2,3, Luca Bragazza2,4, Bjorn Robroek2,5 1: Climate Impacts Research Centre, Umeå University, Sweden 2: Laboratory of Ecological Systems, École Polytechnique Fédérale de Lausanne, Switzerland 3: Swiss Federal Research Institute‐WSL, Community Ecology Research Unit, Switzerland 4: Department of Biology and Evolution, University of Ferrara, Italy 5: Ecology and Biodiversity, Utrecht University, The Netherlands Winter in the arctic and mid‐ and high latitude mountains are characterised by frost, snow and darkness. Ecosystem processes such as plant photosynthesis, nutrient uptake and microbial activities are therefore often thought to strongly slow down compared to summer. However, sufficient snow insulates and might enable temperature‐limited processes to continue. Changes in winter precipitation may alter this, yet, winter ecosystem processes remain poorly understood. We removed snow on an ombrotrophic bog in the Swiss Jura mountains to compare impacts and legacy effects on above‐ and belowground ecosystem processes. Snow in mid‐winter (1m; February) and late‐winter (0.4m; April) reduced the photosynthetic capacity (Amax) of Eriophorum vaginatum and the total microbial biomass compared to the subsequent spring 15 (June) and summer (July) values. Amax of Sphagnum magellanicum and N‐uptake by vascular plants were, however, almost as high or higher in mid‐ and late‐winter as in summer. Snow removal enhanced freeze‐thaw cycles and minimum soil temperatures. -
Figure 3.16 Labrador Sea Bathymetry for the SEA Area The
LABRADOR SHELF OFFSHORE AREA SEA – FINAL REPORT Figure 3.16 Labrador Sea Bathymetry for the SEA Area The Labrador Shelf can be divided into four distinct physiographic regions: coastal embayments; a rough inner shelf; a coast parallel depression referred to as the marginal trough; and a smooth, shallow outer shelf consisting of banks and intervening saddles. These features are presented in Figure 3.17. 3.2.1 Coastal Embayments The Labrador coast in the region of the Makkovik Bank is made up of a series of fjords. The fjords are generally steep-sided with deep U-shaped submarine profiles along the coast north of Cape Harrison, while glacial erosion and low relief prevented fjord development to the south. Sikumiut Environmental Management Ltd. © 2008 August 2008 105 LABRADOR SHELF OFFSHORE AREA SEA – FINAL REPORT Figure 3.17 Location Map of Labrador Shelf Indicating Main Features Sikumiut Environmental Management Ltd. © 2008 August 2008 106 LABRADOR SHELF OFFSHORE AREA SEA – FINAL REPORT 3.2.1.1 Inner Shelf The inner shelf extends from the coast to approximately the 200 m isobath, with a width of approximately 25 km and a general east-facing slope in the vicinity of Cape Harrison. The topography exhibits jagged erosional features and is topographically complex, having relief and underlying bedrock similar to the adjoining mainland. Local relief features displaying changes in bathymetry are present in areas deeper than 75 m water depth and shoals are common. Soil deposits are generally present in depressions or buried channels. Localized seabed slopes of 30 degrees are not uncommon, and some vertical faces can be expected, particularly at bedrock outcrops. -
Plant Communities Within Atlantic Coastal Heathlands in Nova Scotia
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/269580394 Plant Communities within Atlantic Coastal Heathlands in Nova Scotia Article in Northeastern Naturalist · December 2013 DOI: 10.1656/045.020.0420 CITATION READS 1 183 2 authors: Robert Cameron Soren Bondrup-Nielsen Nova Scotia Department of Environment, Canada, Halifax Acadia University 52 PUBLICATIONS 398 CITATIONS 32 PUBLICATIONS 544 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: Population status and habitat of Fuscopannaria leucosticta in Canada View project mercury in lichens View project All content following this page was uploaded by Robert Cameron on 01 March 2016. The user has requested enhancement of the downloaded file. 2013 NORTHEASTERNNortheastern NaturalistNATURALIST 20(4):694–709Vol. 20, No. 4 R.P. Cameron and S. Bondrup-Nielsen Plant Communities within Atlantic Coastal Heathlands in Nova Scotia Robert P. Cameron1,* and Soren Bondrup-Nielsen2 Abstract - Coastal heathlands are rare ecosystems that provide habitat for rare species in Nova Scotia. Thirty-nine plots were established in Nova Scotia heathlands to assess plant community composition and occurrence of rare plants. Analysis of species richness and multidimensional scaling (MDS) revealed that heathland communities are varied, with differences between regions, inland and coastal sites, and between physiognomy types. Six rare plants occurred within 9 of 39 plots. Coastal heathland communities were found to have greater species richness and variation in community type than previously thought. Heathland rare plants are not restricted to any particular community type; rather, rare coastal plants in Nova Scotia occur in a wide variety of community types. -
Visitor Guide Photo Pat Morrow
Visitor Guide Photo Pat Morrow Bear’s Gut Contact Us Nain Office Nunavik Office Telephone: 709-922-1290 (English) Telephone: 819-337-5491 Torngat Mountains National Park has 709-458-2417 (French) (English and Inuttitut) two offices: the main Administration Toll Free: 1-888-922-1290 Toll Free: 1-888-922-1290 (English) office is in Nain, Labrador (open all E-Mail: [email protected] 709-458-2417 (French) year), and a satellite office is located in Fax: 709-922-1294 E-Mail: [email protected] Kangiqsualujjuaq in Nunavik (open from Fax: 819-337-5408 May to the end of October). Business hours Mailing address: Mailing address: are Monday-Friday 8 a.m. – 4:30 p.m. Torngat Mountains National Park Torngat Mountains National Park, Box 471, Nain, NL Box 179 Kangiqsualujjuaq, Nunavik, QC A0P 1L0 J0M 1N0 Street address: Street address: Illusuak Cultural Centre Building 567, Kangiqsualujjuaq, Nunavik, QC 16 Ikajutauvik Road, Nain, NL In Case Of Emergency In case of an emergency in the park, Be prepared to tell the dispatcher: assistance will be provided through the • The name of the park following 24 hour emergency numbers at • Your name Jasper Dispatch: • Your sat phone number 1-877-852-3100 or 1-780-852-3100. • The nature of the incident • Your location - name and Lat/Long or UTM NOTE: The 1-877 number may not work • The current weather – wind, precipitation, with some satellite phones so use cloud cover, temperature, and visibility 1-780-852-3100. 1 Welcome to TABLE OF CONTENTS Introduction Torngat Mountains National Park 1 Welcome 2 An Inuit Homeland The spectacular landscape of Torngat Mountains Planning Your Trip 4 Your Gateway to Torngat National Park protects 9,700 km2 of the Northern Mountains National Park 5 Torngat Mountains Base Labrador Mountains natural region. -
North Atlantic Variability and Its Links to European Climate Over the Last 3000 Years
ARTICLE DOI: 10.1038/s41467-017-01884-8 OPEN North Atlantic variability and its links to European climate over the last 3000 years Paola Moffa-Sánchez1 & Ian R. Hall1 The subpolar North Atlantic is a key location for the Earth’s climate system. In the Labrador Sea, intense winter air–sea heat exchange drives the formation of deep waters and the surface circulation of warm waters around the subpolar gyre. This process therefore has the 1234567890 ability to modulate the oceanic northward heat transport. Recent studies reveal decadal variability in the formation of Labrador Sea Water. Yet, crucially, its longer-term history and links with European climate remain limited. Here we present new decadally resolved marine proxy reconstructions, which suggest weakened Labrador Sea Water formation and gyre strength with similar timing to the centennial cold periods recorded in terrestrial climate archives and historical records over the last 3000 years. These new data support that subpolar North Atlantic circulation changes, likely forced by increased southward flow of Arctic waters, contributed to modulating the climate of Europe with important societal impacts as revealed in European history. 1 School of Earth and Ocean Sciences, Cardiff University, Cardiff CF10 3YE, UK. Correspondence and requests for materials should be addressed to P.M.-S. (email: [email protected]) NATURE COMMUNICATIONS | 8: 1726 | DOI: 10.1038/s41467-017-01884-8 | www.nature.com/naturecommunications 1 ARTICLE NATURE COMMUNICATIONS | DOI: 10.1038/s41467-017-01884-8 cean circulation has a key role in the Earth’s climate, as it 80°N is responsible for the transport of heat but also its storage O ’ in the ocean s interior. -
Fresh Water and Its Role in the Arctic Marine System
PUBLICATIONS Journal of Geophysical Research: Biogeosciences RESEARCH ARTICLE Freshwater and its role in the Arctic Marine System: Sources, 10.1002/2015JG003140 disposition, storage, export, and physical and biogeochemical Special Section: consequences in the Arctic and global oceans Arctic Freshwater Synthesis E. C. Carmack1, M. Yamamoto-Kawai2, T. W. N. Haine3, S. Bacon4, B. A. Bluhm5, C. Lique6,7, H. Melling1, I. V. Polyakov8, F. Straneo9, M.-L. Timmermans10, and W. J. Williams1 Key Points: • The Arctic Ocean Freshwater System 1Fisheries and Oceans Canada, Sidney, British Columbia, Canada, 2Tokyo University of Marine Science and Technology, has major intra-Arctic and extra-Arctic 3 4 effects Tokyo, Japan, Earth and Planetary Sciences, The Johns Hopkins University, Baltimore, Maryland, USA, National • The Arctic Ocean Freshwater System Oceanography Centre, Southampton, UK, 5Department of Marine and Arctic Biology, UiT The Arctic University of Norway, regulates and constrains physical and Tromsø, Norway, 6Department of Earth Sciences, University of Oxford, Oxford, UK, 7Now at Laboratoire de Physique des biogeochemical processes Océans, Ifremer, Plouzané, France, 8International Arctic Research Center, University of Alaska Fairbanks, Fairbanks, Alaska, • Changes in the Arctic Ocean 9 10 Freshwater System are expected in USA, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA, Department of Geology and Geophysics, the future with substantial impacts Yale University, New Haven, Connecticut, USA Abstract The Arctic Ocean