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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. -
Switzerland - Alpine Flowers of the Upper Engadine
Switzerland - Alpine Flowers of the Upper Engadine Naturetrek Tour Report 8 - 15 July 2018 Androsace alpina Campanula cochlerariifolia The group at Piz Palu Papaver aurantiacum Report and Images by David Tattersfield Naturetrek Mingledown Barn Wolf's Lane Chawton Alton Hampshire GU34 3HJ UK T: +44 (0)1962 733051 E: [email protected] W: www.naturetrek.co.uk Tour Report Switzerland - Alpine Flowers of the Upper Engadine Tour participants: David Tattersfield (leader) with 16 Naturetrek clients Day 1 Sunday 8th July After assembling at Zurich airport, we caught the train to Zurich main station. Once on the intercity express, we settled down to a comfortable journey, through the Swiss countryside, towards the Alps. We passed Lake Zurich and the Walensee, meeting the Rhine as it flows into Liectenstein, and then changed to the UNESCO World Heritage Albula railway at Chur. Dramatic scenery and many loops, tunnels and bridges followed, as we made our way through the Alps. After passing through the long Preda tunnel, we entered a sunny Engadine and made a third change, at Samedan, for the short ride to Pontresina. We transferred to the hotel by minibus and met the remaining two members of our group, before enjoying a lovely evening meal. After a brief talk about the plans for the week, we retired to bed. Day 2 Monday 9th July After a 20-minute walk from the hotel, we caught the 9.06am train at Surovas. We had a scenic introduction to the geography of the region, as we travelled south along the length of Val Bernina, crossing the watershed beside Lago Bianco and alighting at Alp Grum. -
Biodiversity and Management of the Madrean Archipelago
)I This file was created by scanning the printed publication. Errors identified by the software have been corrected; however, some errors may remain. A Classification System and Map of the Biotic Communities of North America David E. Brown, Frank Reichenbacher, and Susan E. Franson 1 Abstract.-Biotic communities (biomes) are regional plant and animal associations within recognizable zoogeographic and floristic provinces. Using the previous works and modified terminology of biologists, ecologists, and biogeographers, we have developed an hierarchical classification system for the world's biotic communities. In use by the Arid Ecosystems Resource Group of the Environmental Protection Agency's Environmental Monitoring and Assessment Program, the Arizona Game and Fish Department, and other Southwest agencies, this classification system is formulated on the limiting effects of moisture and temperature minima on the structure and composition of vegetation while recognizing specific plant and animal adaptations to regional environments. To illustrate the applicability of the classification system, the Environmental Protection Agency has funded the preparation of a 1: 10,000,000 color map depicting the major upland biotic communities of North America using an ecological color scheme that shows gradients in available plant moisture, heat, and cold. Digitized and computer compatible, this hierarchical system facilitates biotic inventory and assessment, the delineation and stratification of habitats, and the identification of natural areas in need of acquisition, Moreover, the various categories of the classification are statistically testable through the use of existing climatic data, and analysis of plant and animal distributions. Both the classification system and map are therefore of potential use to those interested in preserving biotic diversity. -
Cyperaceae of Alberta
AN ILLUSTRATED KEY TO THE CYPERACEAE OF ALBERTA Compiled and writen by Linda Kershaw and Lorna Allen April 2019 © Linda J. Kershaw & Lorna Allen This key was compiled using information primarily from and the Flora North America Association (2008), Douglas et al. (1998), and Packer and Gould (2017). Taxonomy follows VASCAN (Brouillet, 2015). The main references are listed at the end of the key. Please try the key this summer and let us know if there are ways in which it can be improved. Over the winter, we hope to add illustrations for most of the entries. The 2015 S-ranks of rare species (S1; S1S2; S2; S2S3; SU, according to ACIMS, 2015) are noted in superscript ( S1; S2;SU) after the species names. For more details go to the ACIMS web site. Similarly, exotic species are followed by a superscript X, XX if noxious and XXX if prohibited noxious (X; XX; XXX) according to the Alberta Weed Control Act (2016). CYPERACEAE SedgeFamily Key to Genera 1b 01a Flowers either ♂ or ♀; ovaries/achenes enclosed in a sac-like or scale-like structure 1a (perigynium) .....................Carex 01b Flowers with both ♂ and ♀ parts (sometimes some either ♂ or ♀); ovaries/achenes not in a perigynium .........................02 02a Spikelets somewhat fattened, with keeled scales in 2 vertical rows, grouped in ± umbrella- shaped clusters; fower bristles (perianth) 2a absent ....................... Cyperus 02b Spikelets round to cylindrical, with scales 2b spirally attached, variously arranged; fower bristles usually present . 03 03a Achenes tipped with a rounded protuberance (enlarged style-base; tubercle) . 04 03b Achenes without a tubercle (achenes 3a 3b often beaked, but without an enlarged protuberence) .......................05 04a Spikelets single; stems leafess . -
ENSCONET Seed Collecting Manual for WILD SPECIES
ENSCONET Seed Collecting Manual FOR WILD SPECIES Main editors: Royal Botanic Gardens, Kew (UK) & Universidad Politécnica de Madrid (Spain) Edition 1: 17 March 2009* * This document will be updated as improvements become apparent ISBN: 978-84-692-3926-1 Citation: ENSCONET (2009) ENSCONET Seed Collecting Manual for Wild Species ENSCONET member and associate member institutes that have assisted with the development of this manual: Seed Conservation Department, Royal Botanic Gardens, Kew, Wakehurst Place, Ardingly, West Sussex RH17 6TN, UK Department of Botany, Faculty of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15784, GREECE Institute of Botany, Slovak Academy of Sciences, Dúbravská cesta 14, 845 23 Bratislava, SLOVAKIA Budapest Zoo & Botanical Garden, P.O. Box 469, Állatkerti körút 6-12, 1146 Budapest, HUNGARY Mediterranean Agronomic Institute of Chania, Alsyllion Agrokepion, P.O. Box 85, 73100 Chania (Crete), GREECE IMGEMA - Jardín Botánico de Córdoba, Avda. de Linneo s/n, 14004 Córdoba, SPAIN Trinity College Botanic Garden, Palmerston Park, Dartry, Dublin 6, IRELAND Jardin Botanico Viera y Clavijo del Cabildo de Gran Canaria, Apdo 14, 35017 Tafira Alta, Las Palmas de Gran Canaria, SPAIN Agricultural Research Institute, P.O.Box 22016, 1516 Nicosia, CYPRUS Departamento de Biología Vegetal, Escuela Técnica Superior de Ingenieros Agrónomos, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, SPAIN National Botanic Garden of Belgium, Domein van Bouchout, 1860 Meise, BELGIUM Muséum National d’Histoire Naturelle, Département des Jardins Botaniques et Zoologiques, Case postale 45, 57, rue Cuvier, 75231 Paris Cedex 05, FRANCE Università degli Studi di Pavia, Dipartimento di Ecologia del Territorio e degli Ambienti Terrestri, Via S. -
Low Arctic Tundra
ECOREGION Forest Barren Tundra Bog L1 Low Arctic Tundra NF 1 he Low Arctic This is also the driest region in Labrador; TTundra ecoregion the average annual precipitation is only 500 mm, 2 is located at the very which occurs mainly in the form of snow. Not n o r t h e r n t i p o f surprisingly, human habitation in this ecoregion Labrador. It extends south from Cape Chidley to is limited and non-permanent. 3 the Eclipse River, and is bordered by Quebec on In most years, coastal ice continues well the west and the Labrador Sea on the east. This into summer (sometimes not breaking up until region is characterized by a severe, stark beauty: August), which is longer than anywhere else on 4 vast stretches of exposed bedrock, boulders, the Labrador coast. Permafrost is continuous in and bare soil are broken only by patches of the valleys and mountains inland, and moss and lichens. There are no trees or discontinuous in coastal areas. 5 tall shrubs here and other vegetation is The large amount of exposed soil and extremely limited. bedrock, combined with the harsh climate, 6 The topography of the Low Arctic results in sparse vegetation throughout the Tundra includes flat coastal plains in the entire ecoregion. Seasonal flooding also north near Ungava Bay, and low steep- restricts the distribution of plants on valley 7 sided hills in the south with elevation up to floors. Because this area has no forests, 630 metres above sea level. In hilly it is true tundra. -
Appendix C: Tables
Appendix C: Tables Table 1. Mean fire-return intervals for Alaskan tundra ecosystems during the late Holocene Mean (range) fire-return Location Plant community interval (years) Methods Reference charcoal deposits in sediments of 2 Jandt and others (2008) North Slope tussock-shrub tundra >5,000 years lakes spanning to 5,000 years BP [36] pollen grains and charcoal deposits in Noatak National Preserve, entire 31- lake sediments from 4 lakes spanning Higuera and others (2011) 260 (30-840)* mile (50 km) transect 50 km along an east-west transect; [29] records spanned from 6,000 years BP tussock-shrub tundra; birch to 2007 ericaceous shrub tundra; and Noatak National Preserve, eastern willow-shrub tundra with pollen grains and charcoal deposits in portion of transect (Poktovik and white spruce 142 (115-174)* lake sediments from 4 lakes spanning Little Isac lakes) Higuera and others (2011) 50 km along an east-west transect; [32] Noatak National Preserve, western records spanned from 2,500 years BP portion of transect (Raven and 263 (175-374)* to 2007 Uchugrak lakes) pollen grains and charcoal deposits in Seward Peninsula 240 Jennifer Allen personal lake sediments communication cited in LANDFIRE Biophysical pollen grains and charcoal deposits in Beaufort Coastal Plain >1,000 Settings (2009) [44] lake sediments sedge tussock tundra FRCC Experts Workshop 2004 personal 50-300 expert opinion communication cited in Throughout Alaska LANDFIRE Biophysical Settings (2009) [44] Duchesne and Hawkes tundra 35-200 expert opinion (2000) [19] *The fire-event return interval was calculated for a 0.6 mile (1km) area around each lake. The term "fire event" was used to acknowledge that some peaks in charcoal deposits may include more than 1 fire. -
Waterton Lakes National Park • Common Name(Order Family Genus Species)
Waterton Lakes National Park Flora • Common Name(Order Family Genus species) Monocotyledons • Arrow-grass, Marsh (Najadales Juncaginaceae Triglochin palustris) • Arrow-grass, Seaside (Najadales Juncaginaceae Triglochin maritima) • Arrowhead, Northern (Alismatales Alismataceae Sagittaria cuneata) • Asphodel, Sticky False (Liliales Liliaceae Triantha glutinosa) • Barley, Foxtail (Poales Poaceae/Gramineae Hordeum jubatum) • Bear-grass (Liliales Liliaceae Xerophyllum tenax) • Bentgrass, Alpine (Poales Poaceae/Gramineae Podagrostis humilis) • Bentgrass, Creeping (Poales Poaceae/Gramineae Agrostis stolonifera) • Bentgrass, Green (Poales Poaceae/Gramineae Calamagrostis stricta) • Bentgrass, Spike (Poales Poaceae/Gramineae Agrostis exarata) • Bluegrass, Alpine (Poales Poaceae/Gramineae Poa alpina) • Bluegrass, Annual (Poales Poaceae/Gramineae Poa annua) • Bluegrass, Arctic (Poales Poaceae/Gramineae Poa arctica) • Bluegrass, Plains (Poales Poaceae/Gramineae Poa arida) • Bluegrass, Bulbous (Poales Poaceae/Gramineae Poa bulbosa) • Bluegrass, Canada (Poales Poaceae/Gramineae Poa compressa) • Bluegrass, Cusick's (Poales Poaceae/Gramineae Poa cusickii) • Bluegrass, Fendler's (Poales Poaceae/Gramineae Poa fendleriana) • Bluegrass, Glaucous (Poales Poaceae/Gramineae Poa glauca) • Bluegrass, Inland (Poales Poaceae/Gramineae Poa interior) • Bluegrass, Fowl (Poales Poaceae/Gramineae Poa palustris) • Bluegrass, Patterson's (Poales Poaceae/Gramineae Poa pattersonii) • Bluegrass, Kentucky (Poales Poaceae/Gramineae Poa pratensis) • Bluegrass, Sandberg's (Poales -
Vegetation of the Continental Northwest Territories at 6 Ka BP
Document generated on 09/28/2021 6:09 a.m. Géographie physique et Quaternaire Vegetation of the Continental Northwest Territories at 6 ka BP La végétation des Territoires du Nord-Ouest continentaux à 6 ka BP Die Vegetation der kontinentalen Nordwest-Territorien um 6 ka v.u.Z. Glen M. MacDonald La paléogéographie et la paléoécologie d’il y a 6000 ans BP au Canada Article abstract Paleogeography and Paleoecology of 6000 yr BP in Canada Pollen records are used to reconstruct vegetation in the continental Northwest Volume 49, Number 1, 1995 Territories at 6 ka (6000 14C yr BP). Picea glauca, P mariana, Larix laricina, Populus tremuloides, P. balsamifera, Alnus crispa and A. incana were present URI: https://id.erudit.org/iderudit/033028ar throughout their modern ranges in the Boreal and Subarctic Forest Zones by DOI: https://doi.org/10.7202/033028ar 6000 BP. Pinus banksiana, however, had not yet reached its present northern limits. Population densities of the dominant trees, Picea glauca and Picea mariana, were close to, or as high as, present. In the Mackenzie Delta region See table of contents the range limit of Picea glauca was approximately 25 km north of its modern location just prior to 6000 BP. In contrast, the northern limits of the forest in central Canada were similar to present. The tundra vegetation close to the edge Publisher(s) of the forest was similar to modern Low Arctic Tundra. Development of extensive Sphagnum peatlands had begun in the forested areas and the Les Presses de l'Université de Montréal adjacent Low Arctic Tundra. -
Arctic Greening from Warming Promotes Declines in Caribou Populations Per Fauchald, Taejin Park, Hans Tømmervik, Ranga Myneni and Vera Helene Hausner
SCIENCE ADVANCES | RESEARCH ARTICLE APPLIED ECOLOGY 2017 © The Authors, some rights reserved; Arctic greening from warming promotes declines in exclusive licensee American Association caribou populations for the Advancement of Science. Distributed 1 2 1 2 3 under a Creative Per Fauchald, * Taejin Park, Hans Tømmervik, Ranga Myneni, Vera Helene Hausner Commons Attribution NonCommercial The migratory tundra caribou herds in North America follow decadal population cycles, and browsing from abundant License 4.0 (CC BY-NC). caribou could be expected to counteract the current climate-driven expansion of shrubs in the circumpolar tundra biome. We demonstrate that the sea ice cover in the Arctic Ocean has provided a strong signal for climate-induced changes on the adjacent caribou summer ranges, outperforming other climate indices in explaining the caribou-plant dynamics. We found no evidence of a negative effect of caribou abundance on vegetation biomass. On the contrary, we found a strong bottom-up effect in which a warmer climate related to diminishing sea ice has increased the plant biomass on the summer pastures, along with a paradoxical decline in caribou populations. This result suggests that this climate-induced greening has been accompanied by a deterioration of pasture quality. The shrub expansion in Arctic North America involves plant species with strong antibrowsing defenses. Our results might therefore be an early signal of a climate-driven shift in the caribou-plant interaction from a system with low plant biomass modulated by cyclic caribou populations to a system dominated by nonedible shrubs and diminishing herds of migratory caribou. Downloaded from INTRODUCTION minimum during the mid-1970s and an increase during the 1980s The populations of migratory tundra caribou (Rangifer tarandus Linn.) and early 1990s. -
Biodiversity of Benthic Macroinvertebrates Across the Circumpolar Region: Latitudinal Declines in Richness of Lakes and Rivers
Biodiversity of Benthic Macroinvertebrates Across the Circumpolar Region: Latitudinal Declines in Richness of Lakes and Rivers Jennifer Lento1, Joseph Culp, Willem Goedkoop (+20 contributors) 1Canadian Rivers Institute, University of New Brunswick, Canada Arctic Benthic Macroinvertebrates (BMIs) • BMI: Important component of Arctic freshwater food webs and ecosystems that reflects conditions of the freshwater environment • Regional latitudinal shift in taxa: caddisfly stonefly midge INCREASING worm LATITUDE mayfly Photo credits: www.lifeinfreshwater.net crane fly bugguide.net Objectives: • Evaluate alpha diversity (taxon richness) across ecoregions and latitudes • Assess environmental drivers of diversity • Produce baseline for future assessments and identify monitoring gaps Oswood 1997, Castella et al. 2001, Scott et al. 2011; CAFF 2013;Culp et al. 2018 BMI Data •Database includes over 1250 river BMI stations and over 350 littoral lake stations •Nomenclature harmonized across circumpolar region •Data selected by methods and habitats •Presence/absence for analysis where necessary (e.g., different mesh sizes) Facilitating Circumpolar Assessment • Stations grouped within hydrobasins (USGS/WWF) to standardize watersheds • Analysis by ecoregion (Terrestrial Ecoregions of the World; WWF) to group climatically-similar stations • Alpha diversity (number of taxa) estimated for each ecoregion, compared across circumpolar region • Geospatial variables derived for each Hydrobasin to standardize drivers alaska.usgs.gov BMI Diversity in Arctic Lakes -
Differentiation of Tundra/Taiga and Boreal Coniferous
Molecular Ecology (2007) 16, 4149–4170 doi: 10.1111/j.1365-294X.2007.03458.x DifferentiationBlackwell Publishing Ltd of tundra/taiga and boreal coniferous forest wolves: genetics, coat colour and association with migratory caribou MARCO MUSIANI,*†† JENNIFER A. LEONARD,†‡§†† H. DEAN CLUFF,¶ C. CORMACK GATES,* STEFANO MARIANI,** PAUL C. PAQUET,* CARLES VILÀ§ and ROBERT K. WAYNE† *Faculty of Environmental Design, University of Calgary, Calgary, AB, Canada T2N 1 N4, †Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA, ‡Genetics Program/Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20008-0551, USA, §Department of Evolutionary Biology, Uppsala University, 75236 Uppsala, Sweden, ¶Department of Environment and Natural Resources, Government of the Northwest Territories, Yellowknife, NT, Canada X1A 2P9, **Marine Biodiversity, Ecology & Evolution, University College Dublin, Belfield, Dublin 4, Ireland Abstract The grey wolf has one of the largest historic distributions of any terrestrial mammal and can disperse over great distances across imposing topographic barriers. As a result, geographical distance and physical obstacles to dispersal may not be consequential factors in the evolutionary divergence of wolf populations. However, recent studies suggest ecological features can constrain gene flow. We tested whether wolf–prey associations in uninterrupted tundra and forested regions of Canada explained differences in migratory behaviour, genetics, and coat colour of wolves. Satellite-telemetry data demonstrated that tundra wolves (n = 19) migrate annually with caribou (n = 19) from denning areas in the tundra to wintering areas south of the treeline. In contrast, nearby boreal coniferous forest wolves are territorial and associated year round with resident prey.