Results 51 to 60 of about 56,180 (241)

Cratering behaviour and faecal C:N ratio in relation to seasonal snowpack characteristics in a High-Arctic ungulate

Polar Research, 2017
Snow and ice determine winter forage availability for Arctic herbivores. Winter precipitation is anticipated to increase, and icing following warm spells and rain-on-snow (ROS) are likely to become more frequent. While this may reduce herbivore survival,
Larissa T. Beumer, Øystein Varpe, Brage B. Hansen   +2 more
doaj   +1 more source

Development of low-cost multi-wavelength imager system for studies of aurora and airglow [PDF]

, 2020
This paper introduces a new system that can monitor aurora and atmospheric airglow using a low-cost Watec monochromatic imager (WMI) equipped with a sensitive camera, a filter with high transmittance, and the non-telecentric optics.
Brändström, U., Ebihara, Y., Fujii, R., Gerrard, A., Gustavsson, B., Hall, C., Hosokawa, K., Kadokura, A., Kauristie, K., Kosch, M., Miyaoka, H., Miyoshi, Y., Motoba, T., Nozawa, S., Ogawa, Y., Oyama, S., Ozaki, M., Raita, T., Sato, Y., Shiokawa, K., Sigernes, F., Suzuki, S., Tanaka, Y.   +22 more
core   +2 more sources

Nomenclatural revision of Pinguicula (Lentibulariaceae) in the Baltic and Nordic countries including their oversea territories and Iceland

Nordic Journal of Botany, EarlyView.
Names in the genus Pinguicula established for taxa from the Baltic and Nordic countries, including their oversea territories and Iceland, were analyzed to provide nomenclatural and taxonomic clarity. Of the 33 names retrieved from the literature and online databases, one is illegitimate, two are invalid and 16 were found to require typification.
Yoannis Domínguez
wiley   +1 more source

High-resolution digital outcrop model of the faults, fractures, and stratigraphy of the Agardhfjellet Formation cap rock shales at Konusdalen West, central Spitsbergen [PDF]

Earth System Science Data
Structure-from-motion (SfM) photogrammetry has become an important tool for the digitalisation of outcrops as digital outcrop models (DOMs). DOMs facilitate the mapping of stratigraphy and discontinuous structures like folds, faults, and fractures from ...
P. Betlem, P. Betlem, T. Birchall, G. Lord, S. Oldfield, S. Oldfield, S. Oldfield, L. Nakken, L. Nakken, L. Nakken, K. Ogata, K. Senger   +11 more
doaj   +1 more source

Chemostratigraphy of Neoproterozoic carbonates: implications for 'blind dating' [PDF]

, 2001
The delta C-13(carb) and Sr-87/Sr-86 secular variations in Neoproteozoic seawater have been used for the purpose of 'isotope stratigraphy' but there are a number of problems that can preclude its routine use.
Aharon P., Anthony E. Fallick, Anton B. Kuznetsov, Bowring S.A., Brand U., Brasier M.D., Brasier M.D., Brasier M.D., Burns S.J., Calver C.R., Corsetti F.A., Fairchild I.J., Fairchild I.J., Gao G., Gorokhov I.M., Gorokhov I.M., Gorokhov I.M., Grotzinger J.P., Grotzinger J.P., Hoffman P.F., Igor M. Gorokhov, Kaufman A.J., Kennedy M.J., Kirschvink J.L., Knoll A.H., Knoll A.H., Knoll A.H., Kupecz J.A., Kuznetsov A.B., Kuznetsov A.B., Lambert I.B., Magaritz M., McArthur J.M., McArthur J.M., McCulloch M.T., Melezhik V.A., Morton J.P., Ovchinnikova G.V., Pelechaty S.M., Podkovyrov V.N., Pokrovsky B.G., Pokrovsky B.G., Pokrovsky B.G., Saylor B.Z., Semikhatov M.A., Singh U., Smith L.H., Tronnes R.G., Tucker M.E., Tucker M.E., Veizer J., Veizer J., Victor A. Melezhik, Wada S.-I., Walter M.R., Wang Da-Rui   +55 more
core   +1 more source

Introducing Svalbard Studies

Nordlit, 2020
Svalbard, or “cool edge” in Old Norse, is an archipelago in the Arctic Ocean. It has no indigenous population and some 60% of its landmass is covered by ice. Yet its rich wildlife and mineral resources, as well as spectacular sights, have been attracting a great deal of commercial interest ever since Willem Barentsz discovered the archipelago in 1596 ...
Leonid S. Chekin, Andrei Rogatchevski
openaire   +5 more sources

Using a social‐ecological macrosystems framework to understand how human activities alter ecological synchrony

People and Nature, EarlyView.
Abstract Different aspects of ecological systems, biotic or abiotic, often fluctuate in coordinated patterns over space and time. Such high concordance between ecological processes is often referred to as ecological synchrony. Human activities, including and beyond climate change, have the potential to alter ecological synchrony by disrupting or ...
Yiluan Song, Mallory Barnes, K. Ann Bybee‐Finley, Kyla M. Dahlin, Travis McDevitt‐Galles, Stephan B. Munch, Guillermo E. Ponce‐Campos, Casey Youngflesh, Benjamin Zuckerberg, Kai Zhu   +9 more
wiley   +1 more source

Seasonal shifts in feeding patterns: Individual and population realized specialization in a high Arctic fish

Ecology and Evolution, 2019
Species with a broad and flexible diet may be at an advantage in a rapidly changing environment such as in today's Arctic ecosystems. Polar cod (Boreogadus saida), an abundant and ecologically important circumpolar Arctic fish, is often described as a ...
Marine Cusa, Jørgen Berge, Øystein Varpe   +2 more
doaj   +1 more source

Postglacial expansion of the arctic keystone copepod calanus glacialis [PDF]

, 2018
Calanus glacialis, a major contributor to zooplankton biomass in the Arctic shelf seas, is a key link between primary production and higher trophic levels that may be sensitive to climate warming. The aim of this study was to explore genetic variation in
A Fleminger, A Weydmann, A Weydmann, A Weydmann, A Weydmann, Agata Weydmann, Aleksandra Przyłucka, Artur Burzyński, B Niehoff, C Haag-Liautard, DC MacLellan, DH Reed, E Kenchington, E Werle, Ester A. Serrão, F Tajima, FR Cottier, G Baele, Gareth A. Pearson, GJ Parent, GM Hewitt, GM Hewitt, HJ Bandelt, HJ Hirche, I Smolina, J McManus, J Pons, J Provan, J Provan, JE Søreide, JM Questel, JS Gray, K Blachowiak-Samolyk, K Tamura, Katarzyna S. Walczyńska, KN Kosobokova, L Blanco-Bercial, L Excoffier, LN Papadopoulos, M Sarnthein, MA Larkin, Marek Lubośny, N Knowlton, N Knowlton, ONS Aarbakke, P Librado, R Bouckaert, R Ji, R Staden, RF Lee, RJ Conover, RJ Nelson, S Falk-Petersen, S Kwaśniewski, S Swerpel, W Minxiao, W Walczowski, W Walkusz, WS Grant, Y Huang   +59 more
core   +1 more source

Moisture inversions in the central Arctic: Product assessment and long‐wave radiative effect

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study evaluates the integrated water vapour and the vertical distribution of water vapour of state‐of‐the‐art reanalyses, weather forecast models, and ground‐ and space‐based remote‐sensing products in the central Arctic. A particular focus lies on the representation of humidity inversions and the quantification of the long‐wave radiative effect ...
Andreas Walbröl, Susanne Crewell, Carola Barrientos‐Velasco, Giovanni Chellini, Hannes J. Griesche, Janna E. Rückert, Kerstin Ebell   +6 more
wiley   +1 more source