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  • 301. Andersson, C.
    et al.
    Löfstedt, H.
    Schoning, K.
    Kärkevagge -95 - en studie över tre landformer. Geovetenskap i fjällen.1995Report (Other academic)
  • 302. Andersson, E.
    et al.
    Johnsson, U.
    Fjällturismen i norra Lapplandsfjällen under sommaren 1996.1997Report (Other academic)
  • 303. Andersson, G.
    De stora norrländska sjöarnas ytinnehåll.1901In: Ymer 21: 106-108, Vol. 21, p. 106-108Article in journal (Other academic)
  • 304. Andersson, G.
    Den norrländska florans geografiska fördelning och invandringshistoria med särskild hänsyn till dess sydskandinaviska arter.: Norrländskt Handbibliotek 51912Book (Other (popular science, discussion, etc.))
  • 305. Andersson, G.
    Tjälens djuplek i det nordligaste Sverige.1903In: Ymer, Vol. 23, p. 485-486Article in journal (Other academic)
  • 306. Andersson, G.
    et al.
    Birger, S.
    Die geographische Verteilung und die Einwanderungsgeschichte der nordskandinavischen Flora.1914In: Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie, Vol. 51, p. 501-593Article in journal (Other academic)
  • 307. Andersson, I.H.
    Nectar feeding behaviour and the significance of sugar meals in mosquitoes (Diptera: Culicidae).1991Report (Other academic)
  • 308. Andersson, J.
    et al.
    Weisner, S.
    Jämförande studier av populationsdynamiken hos två Carex bigelowii populationer.1980Student thesis
  • 309. Andersson, L.
    Björklidens vinterturister. En studie av turisterna och deras vanor.1996Report (Other academic)
  • 310. Andersson, Leif
    Flux of carbon in the Polar Front region between South Africa and Antarctica1999In: Polarforskningssekretariatets årsbok 1998 / [ed] Grönlund, Eva red, Stockholm: Swedish Polar Research , 1999, , p. 57 - 58Chapter in book (Other academic)
  • 311. Andersson, M.
    Fjällämmeln - en flyttande gnagare?1977Report (Other academic)
  • 312. Andersson, M.
    Fjällämmeln - en nordisk särling1977In: Fauna och flora, Vol. 72, no 4, p. 182-188Article in journal (Other academic)
  • 313. Andersson, M.
    Influence of predation on rodent populations1977In: Oikos, Vol. 29, p. 591-597Article in journal (Other academic)
  • 314. Andersson, M.
    Lemmus lemmus: A possible case of aposematic coloration and behavior1976In: Journal of Mammalogy, Vol. 57, no 3, p. 461-469Article in journal (Other academic)
  • 315. Andersson, M. E.
    et al.
    Sommar, J.
    Gardfeldt, K.
    Lindqvist, O.
    Enhanced concentrations of dissolved gaseous mercury in the surface waters of the Arctic Ocean2008In: Marine Chemistry, ISSN 0304-4203, E-ISSN 1872-7581, Vol. 110, no 3-4, p. 190-194Article in journal (Refereed)
    Abstract [en]

    During an almost three months long expedition in the Arctic Ocean, the Beringia 2005, dissolved gaseous mercury (DGM) was measured continuously in the surface water. The DGM concentration was measured using an equilibrium system, i.e. the DGM in the water phase equilibrated with a stream of gas and the gas was thereafter analysed with respect to its mercury content. The DGM concentrations were calculated using the following equation, DGM = Hg-eq / k(H’) where Hg-eq is the equilibrated concentration of elemental mercury in the gas phase and k(H’) is the dimensionless Henry’s law constant at desired temperature and salinity. During the expedition several features were observed. For example, enhanced DGM concentration was measured underneath the ice which may indicate that the sea ice acted as a barrier for evasion of mercury from the Arctic Ocean to the atmosphere. Furthermore, elevated DGM concentrations were observed in water that might have originated from river discharge. The gas-exchange of mercury between the ocean and the atmosphere was calculated in the open water and both deposition and evasion were observed. The measurements showed significantly enhanced DGM concentrations, compared to more southern latitudes. (C) 2008 Elsevier B.V. All rights reserved.

  • 316. Andersson, M.
    et al.
    Jonasson, S.
    Rodent cycles in relation to food resources on an alpine heath1986In: Oikos, Vol. 46, no 1, p. 93-106Article in journal (Other academic)
  • 317. Andersson, Malte
    Aposematism and crypsis in a rodent: antipredator defence of the Norwegian lemming2015In: Behavioral Ecology and Sociobiology, ISSN 0340-5443, E-ISSN 1432-0762, Vol. 69, no 4, p. 571-581Article in journal (Refereed)
    Abstract [en]

    Aposematism is unusual in herbivorous mammals, and exceptions help clarify its ecology and evolution. The Norwegian lemming differs from other rodents in colouration and behaviour. One hypothesis is that its black, yellow and white colours, loud calls and ferocious defence reduce predation by conspicuous aposematism. Another hypothesis is that the colouration is cryptic. These alternatives are tested in a detectability experiment comparing lemmings and sympatric grey-sided voles. All 18 observers detected a higher proportion of the lemmings, corroborating conspicuousness. Unlike smaller rodents, Norwegian lemmings often call from a distance at predators. The aposematism hypothesis predicts that cryptically coloured Alaskan brown lemmings will not call. In the field, Norwegian lemmings gave antipredator calls at a human observer in 36 of 110 encounters, but brown lemmings did so in only 1 of 39 cases. Most Norwegian lemmings called if surprised within a few metres but froze or fled silently farther away, relying on crypsis against distant predators. Small juveniles called as often as adults, a possible case of auto-mimicry. In an earlier experiment, Norwegian lemmings, in contrast with grey-sided voles, aggressively resisted attacks by a major avian predator of rodents. The tests corroborate the hypotheses that (1) distinctive, contrast-rich colouration, antipredator calls and threat postures of the Norwegian lemming form a multimodal suit of aposematic traits, warning predators that this is a more dangerous prey than the smaller sympatric voles, and (2) discriminability from undefended species is an important adaptive reason for conspicuous distinctness of many aposematic signals.

  • 318. Andersson, Maria
    Transport of mercury species in the environment2008Doctoral thesis, monograph (Other academic)
  • 319. Andersson, Maria E.
    et al.
    Gardfeldt, Katarina
    Wangberg, Ingvar
    A description of an automatic continuous equilibrium system for the measurement of dissolved gaseous mercury2008In: Analytical and Bioanalytical Chemistry, ISSN 1618-2642, E-ISSN 1618-2650, Vol. 391, no 6, p. 2277-2282Article in journal (Refereed)
    Abstract [en]

    A novel continuous equilibrium system with high time resolution, i.e. every ten minutes, was developed to sample and determine dissolved gaseous mercury (DGM) in natural surface waters. The system is based on the opposite flow principle, can be connected to a ship’s bow water system, and can be applied under most ambient conditions, such as high wind speeds and onboard a moving ship. For the DGM determination the system uses the measured equilibrium concentration of mercury established between the aqueous and gaseous phases, i.e. DGM = Hg(extr) / k (H’), where Hg(extr) is the measured mercury concentration in the outgoing gas phase and k(H’) is the dimensionless Henry’s Law constant at the desired temperature and salinity. The efficiency of the system was investigated via theoretical calculations and by comparing the continuous equilibrium system with discrete samples. The measurements obtained by the continuous equilibrium system agree within 13% at the 95% confidence level with the measurements of discrete samples obtained by the traditional technique. The theoretical calculations estimated that the continuous equilibrium system described here had an efficiency of 99% for determining the DGM concentration.

  • 320.
    Andersson, Maria E.
    et al.
    Univ Gothenburg, Dept Chem, Gothenburg, Sweden..
    Gårdfeldt, Katarina
    Univ Gothenburg, Dept Chem, Gothenburg, Sweden.;GMV Ctr Environm & Sustainabil, SE-41296 Gothenburg, Sweden..
    Wängberg, Ingvar
    IVL Swedish Environm Res Inst, Gothenburg, Sweden..
    Strömberg, Dan
    GMV Ctr Environm & Sustainabil, SE-41296 Gothenburg, Sweden..
    Determination of Henry's law constant for elemental mercury2008In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 73, no 4, p. 587-592Article in journal (Refereed)
    Abstract [en]

    The assessment of the global mercury cycle involves estimations of the evasion of mercury form oceanic waters. In such estimations Henry's law constant is often used. In this study the Henry's law constant for elemental mercury has been re-determined in MQ water and artificial sea water. Moreover, for the first time it has been determined for 1.5 M sodium chloride (NaCl) solution which is of relevance for modeling of atmospheric waters at coastal locations. For all solutions, experiments has been conducted at five different temperatures between 278 and 308 K, using a novel technique, for mercury, based on direct measurements of the portioning of mercury between the aqueous and gaseous phase. Elemental mercury was extracted from the water column and the logarithm of the mass of extracted mercury was plotted against time. A dimensionless Henry's law constant, defined as: k(H') = [Hg((g))]/[Hg((aq))] was obtained from the slope of the curve. Almost no difference was observed in the values comparing the Milli-Q water and artificial sea water, however for the 1.5 M NaCl solution a salting-out effect was seen, i.e. the solubility of mercury in the water phase decreased. The decreased solubility will generate an increase in the value of Henry's law constant. (C) 2008 Elsevier Ltd. All rights reserved.

  • 321. Andersson, Maria E.
    et al.
    Sommar, Jonas
    Gardfeldt, Katarina
    Jutterstrom, Sara
    Air-sea exchange of volatile mercury in the North Atlantic Ocean2011In: Marine Chemistry, ISSN 0304-4203, E-ISSN 1872-7581, Vol. 125, no 1-4, p. 1-7Article in journal (Refereed)
    Abstract [en]

    Part of the Beringia 2005 expedition covered the North Atlantic Ocean. During this passage, dissolved gaseous mercury (DGHg) in seawater and atmospheric concentrations of total gaseous mercury (TGHg), carbon monoxide (CO), and ozone (O-3) were measured continuously at high resolution. In addition, meteorological parameters such as wind speed and water temperature were measured continuously by the ship’s meteorological instrumentation. The DGHg concentration was measured using a continuous equilibrium system where the elemental mercury in the sea water was equilibrated with a stream of gas. The DGHg concentration was calculated using DGHg=Hg-eq/k(H), where Hg-eq is the concentration of elemental mercury in the equilibrated air and k(H), is the dimensionless Henry’s law constant. The degree of saturation was determined directly from the measurements S = Hg-eq/TGHg. The water sampled had an average DGHg concentration of 58 +/- 10 fM and the average TGHg concentration was determined to 1.7 +/- 0.1 ng m(-3). The water sampled was under- and super-saturated with respect to elemental mercury covering a large range of saturation of 70 to 230% resulting in an average degree of saturation of 150 +/- 30%. Therefore, both evasion and deposition of elemental mercury were observed in the sampled water. In the light of the average flux, 2.1 +/- 1.8 pmol m(-2) h(-1), it is concluded that mostly evasion occured during the sampling period. (C) 2011 Elsevier B.V. All rights reserved.

  • 322. Andersson, Maria
    et al.
    Sommar, Jonas
    Gårdfeldt, Katarina
    Air-sea flux of volatile mercury over the North Atlantic Ocean2008In: Transport of mercury species in the environment. Exchange between oceanic waters and the atmosphere, Göteborg: Göteborg Univ., Dept. of Chemistry , 2008, , p. Paper IVChapter in book (Other academic)
  • 323. Andersson, Maria
    et al.
    Sommar, Jonas
    Gårdfeldt, Katarina
    Lindqvist, O.
    Accumulation of mercury in the Arctic Ocean2008In: Marine Chemistry, Vol. 110, p. 190-194Article in journal (Refereed)
  • 324. Andersson, N.Å.
    Abisko naturvetenskapliga station.1970In: Fältbiologen, Vol. 23, no 2, p. 8-9Article in journal (Other academic)
  • 325. Andersson, N.Å.
    Andrakull hos rödstjärt (Phoenicurus phoenicurus).1987In: Fåglar i Norrbotten, Vol. 6, no 4, p. 15-Article in journal (Other academic)
  • 326. Andersson, N.Å.
    Forskning vid Abisko Naturvetenskapliga Station.1996In: Fåglar i Norrbotten, Vol. 15, no 2, p. 50-51Article in journal (Other academic)
  • 327. Andersson, N.Å.
    Fågelfaunan i Torneträskområdet - främst Abiskotrakten.1993In: Fåglar i Norrbotten, Vol. 12, no 1, p. 3-17Article in journal (Other academic)
  • 328. Andersson, N.Å.
    Fåglars flyttning fascinerar flertalet.1992In: Fåglar i Norrbotten, Vol. 11, no 2, p. 35-41Article in journal (Other academic)
  • 329. Andersson, N.Å.
    Nationalparksexploatering - tankar och grämelser med utgångspunkt från vad jag nödgas se i Abisko.1970In: Fältbiologen, Vol. 23, no 2, p. 3-7Article in journal (Other academic)
  • 330. Andersson, N.Å.
    Projektering pågår av väg Kiruna-Torneträsk-Narvik.1973In: Sveriges Natur, Vol. 64, no 4, p. 199-201Article in journal (Other academic)
  • 331. Andersson, N.Å.
    Stentrast i Abisko.1989In: Fåglar i Norrbotten, Vol. 8, no 3, p. 71-74Article in journal (Other academic)
  • 332. Andersson, N.Å.
    Upplevelser i nationalpark. Rapport i ord och bild.1976In: Sveriges Natur, Vol. 67, no 4, p. 154-155Article in journal (Other academic)
  • 333. Andersson, N.Å.
    Vad säger pollenregnet om skogen?.1980In: Fauna och flora, Vol. 75, no 1, p. 12-18Article in journal (Other academic)
  • 334. Andersson, N.Å.
    Återfynd av två starar Sturnus vulgaris ringmärkta i Abisko.1996In: Ornis Svecica, Vol. 6, p. 121-122Article in journal (Other academic)
  • 335. Andersson, N.Å.
    et al.
    Callaghan, T.V.
    Karlsson, P.S.
    The Abisko Scientific Research Station.1996In: Ecological Bulletins, Vol. 45, p. 11-14Article in journal (Other academic)
  • 336. Andersson, N.Å. (Ed.)
    Svenska naturskyddsföreningen. Riksstämman 1983 i Kiruna. Exkursion 1 Nordkalottvägen Kiruna - Riksgränsen den 13 - 14 juni 1983.1983Report (Other academic)
  • 337. Andersson, N.Å.
    et al.
    Müller, K.
    Der Tagesrhythmus des Stares Sturnus vulgaris und anderer Singvögel in Abisko, Nordschweden.1978In: Ornis Scand, Vol. 9, no 1, p. 40-45Article in journal (Other academic)
  • 338. Andersson, N.Å.
    et al.
    Persson, B.
    Något om fjällugglans Nyctea scandiaca näringsval i Lappland.1971In: Vår Fågelvärld, Vol. 30, p. 227-23lArticle in journal (Other academic)
  • 339. Andersson, Per
    Biochemistry, trace elements and isotopes in Arctic Ocean margins2006In: Polarforskningssekretariatets årsbok 2005, Stockholm: Swedish Polar Research Secretariat , 2006, , p. 92 - 94Chapter in book (Other academic)
  • 340. Andersson, Per
    et al.
    Porcelli, Don
    Frank, Martin
    Björk, Göran
    Dahlqvist, Ralf
    Gustafsson, Örjan
    Neodymium isotopes in seawater from Barents Sea and Fram Strait Arctic-Atlantic gateways2008In: Geochimica et Cosmochimica Acta, Vol. 72, p. 2854-2867Article in journal (Refereed)
  • 341. Andersson, Per S.
    et al.
    Porcelli, Don
    Frank, Martin
    Bjork, Goran
    Dahlqvist, Ralf
    Gustafsson, Orjan
    Neodymium isotopes in seawater from the Barents Sea and Fram Strait Arctic-Atlantic gateways2008In: Geochimica et Cosmochimica Acta, ISSN 0016-7037, E-ISSN 1872-9533, Vol. 72, no 12, p. 2854-2867Article in journal (Refereed)
    Abstract [en]

    The neodymium concentration, C-Nd, and isotopic composition, epsilon(Nd), in seawater have been determined in the water column at five sites in the Barents Sea-Fram Strait area where most of the water exchange between the Arctic Ocean and the North Atlantic takes place. In the main Arctic Ocean inflow branch across the Barents Sea the concentration and isotopic composition (C-Nd = 15.5 pmol/kg and epsilon(Nd) = -10.8) are similar to those reported for the northeastern Nordic Seas, which is consistent with this region being a source area for the Arctic inflow. Due to the addition of Nd from Svalbard shelf sediments, the C-Nd in the surface waters above 150 m, in the Fram Strait inflow branch is higher by a factor of 2 and the epsilon(Nd) is shifted to lower values (-11.8). In the stratified Nansen Basin, where cold low salinity water overlies warmer Atlantic water the C-Nd and epsilon(Nd) do not vary with the vertical temperature-salinity structure but are essentially constant and similar to those of the Atlantic inflow throughout the entire water column, down to 3700 m depth, which indicates that the Nd is to a large extent of Atlantic origin. Compared to the Atlantic inflow water, the Nd in the major Arctic Ocean outflow, the Fram Strait, show higher C-Nd in the surface waters above 150 m, and a higher epsilon(Nd) (-9.8) throughout the entire water column down to 1300 m depth. Sources for the more radiogenic Nd isotopic composition in deep water of the Fram Strait outflow most likely involve boundary exchange with sediments on the shelf and slope as the water passes along the Canadian archipelago. River water is a possible source in the surface water but it also seems likely that Pacific water Nd, modified by interactions on the shelf, is an important component in the Fram Strait surface outflow. Changes in the relative proportions of inflow of river water and flow of Pacific water through the Arctic Ocean could thus influence the isotopic composition of Nd in the North Atlantic. (c) 2008 Elsevier Ltd. All rights reserved.

  • 342.
    Andersson, S.
    et al.
    Inst Geovetenskap, Geografi..
    Karinen, A.
    Öberg, S.
    Studie av sjösediment i Abisko-området, norra Sverige.2001Student thesis
  • 343. Andersson, Torbjörn
    A sedimentological study of glacial deposits in the upper Sjaellandselv area, Jameson Land, East Greenland1994Doctoral thesis, monograph (Other academic)
  • 344. Andersson, Torbjörn
    Late Quaternary palaeoenvironmental history of Prins Karls Forland, western Svalbard1999Doctoral thesis, monograph (Other academic)
  • 345. Andersson, Torbjörn
    Late Quaternary stratigraphic and morphologic investigations in the Poolepynten area, Prins Kars Forland, Western Svalbard1998Doctoral thesis, monograph (Other academic)
  • 346. Andersson, Torbjörn
    Raised beech deposits and new 14C ages from Pricepynten, Prins Karls Forland, western Svalbard2000In: Polar Research, Vol. 19, no 2, p. 271-273Article in journal (Refereed)
  • 347. Andersson, Torbjörn
    et al.
    Forman, Steven L.
    Ingólfsson, Ólafur
    Manley, William F.
    Late Quaternary environmental history of central Prins Kars Forland, western Svalbard1999In: Boreas, Vol. 28, p. 292 - 307Article in journal (Refereed)
  • 348. Andersson, Torbjörn
    et al.
    Forman, Steven L.
    Ingólfsson, Ólafur
    Manley, William F.
    Stratigraphic and morphologic constraints on the Weichselian glacial history of northern Prins Karls Forland, western Svalbard2000In: Geografiska Annaler, Vol. 82A, p. 455-470Article in journal (Refereed)
  • 349. Andersson, Torbjörn
    et al.
    Forman, Steven L.
    Ingólfsson, Ólafur
    Manley, William F.
    The glacial history of central Prins Karls Forland, western Svalbard; no evidence for evidence for coverage by the Barents Sea ice-sheet1999In: Boreas, Vol. 28, no 2, p. 292-307Article in journal (Refereed)
  • 350. Andersson, Torbjörn
    et al.
    Ingólfsson, Ólafur
    Forman, S. L.
    Evidence from the Poole Point coastal sections, Prins Karls Forland, western Svalbard on the late Quaternary glacial history of the Barents Sea Ice Sheet1995In: The 26th Arctic WorkshoAbstract vo6lume, Boulder, Colorado, 1995, , p. 4Conference paper (Other academic)
45678910 301 - 350 of 6168
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