Annual cycle of mat‐forming filamentous alga Tribonem a cf. minus (Stramenopiles, Xanthophyceae) in hydro‐terrestrial habitats in the high Arctic revealed by multiparameter fluorescent staining 1

2020 ◽  
Author(s):  
Matouš Jimel ◽  
Jana Kvíderová ◽  
Josef Elster
Keyword(s):  
Annual Cycle ◽  
High Arctic ◽  
Filamentous Alga ◽  
Fluorescent Staining ◽  
Terrestrial Habitats

Annual Cycle of Freshwater Diatoms in the High Arctic Revealed by Multiparameter Fluorescent Staining

2020 ◽  
Vol 80 (3) ◽  
pp. 559-572
Author(s):  
Eva Hejduková ◽  
Josef Elster ◽  
Linda Nedbalová
Keyword(s):  
Annual Cycle ◽  
High Arctic ◽  
Fluorescent Staining ◽  
Freshwater Diatoms

scholarly journals Changes in Isotopic Niches across Stages of the Annual Cycle in the Arctic Tern (Sterna paradisaea)

ARCTIC ◽  
2018 ◽  
Vol 71 (3) ◽  
Author(s):  
Isabeau Pratte ◽  
Kelly A. Boadway ◽  
Antony W. Diamond ◽  
Mark L. Mallory
Keyword(s):  
Stable Isotopes ◽  
Annual Cycle ◽  
Egg Production ◽  
High Arctic ◽  
Breeding Strategy ◽  
The Arctic ◽  
Isotopic Niche ◽  
Critical Periods ◽  
Income Breeding ◽  
Sterna Paradisaea

 Arctic Terns (Sterna paradisaea) are iconic seabirds of polar latitudes, whose successful reproduction is thought to depend on local food supplies near breeding colonies. We used stable isotopes of carbon and nitrogen in eggs, blood, and feathers of terns breeding in the Canadian High Arctic to compare their isotopic niche between life history stages and between two years. The isotopic niche of terns was smaller during incubation than during pre-breeding or winter. Over two breeding seasons, isotopic profiles of Arctic Terns suggested the high importance of local, exogenous nutrient supplies to form eggs (i.e., an income breeding strategy). Our results illustrate that using stable isotopes to assess the niche of a seabird population during critical periods of its annual cycle could be an essential tool in determining the influence that local forage conditions have on breeding decisions, especially for species that mostly rely on exogenous sources of nutrients and energy for egg production.

Annual Cycles of Two Cyanobacterial Mat Communities in Hydro-Terrestrial Habitats of the High Arctic

2016 ◽  
Vol 71 (4) ◽  
pp. 887-900 ◽  
Author(s):  
Daria Tashyreva ◽  
Josef Elster
Keyword(s):  
High Arctic ◽  
Cyanobacterial Mat ◽  
Annual Cycles ◽  
Terrestrial Habitats

Annual cycle of courtship behavior in the male turkey.

1968 ◽  
Vol 66 (3, Pt.1) ◽  
pp. 743-746 ◽  
Author(s):  
Wolfgang M. Schleidt
Keyword(s):  
Annual Cycle ◽  
Courtship Behavior

Summer phytoplankton of the northern Barents Sea (75–80º N)

2019 ◽  
pp. 8-19
Author(s):  
Larisa A. Pautova ◽  
Vladimir A. Silkin ◽  
Marina D. Kravchishina ◽  
Valeriy G. Yakubenko ◽  
Anna L. Chultsova
Keyword(s):  
Barents Sea ◽  
Weighted Average ◽  
Arctic Basin ◽  
High Arctic ◽  
Alexandrium Tamarense ◽  
Warm Water ◽  
The Arctic ◽  
Absolute Maximum ◽  
Deep Trench ◽  
Maximum Biomass

The structure of the summer planktonic communities of the Northern part of the Barents sea in the first half of August 2017 were studied. In the sea-ice melting area, the average phytoplankton biomass producing upper 50-meter layer of water reached values levels of eutrophic waters (up to 2.1 g/m3). Phytoplankton was presented by diatoms of the genera Thalassiosira and Eucampia. Maximum biomass recorded at depths of 22–52 m, the absolute maximum biomass community (5,0 g/m3) marked on the horizon of 45 m (station 5558), located at the outlet of the deep trench Franz Victoria near the West coast of the archipelago Franz Josef Land. In ice-free waters, phytoplankton abundance was low, and the weighted average biomass (8.0 mg/m3 – 123.1 mg/m3) corresponded to oligotrophic waters and lower mesotrophic waters. In the upper layers of the water population abundance was dominated by small flagellates and picoplankton from, biomass – Arctic dinoflagellates (Gymnodinium spp.) and cold Atlantic complexes (Gyrodinium lachryma, Alexandrium tamarense, Dinophysis norvegica). The proportion of Atlantic species in phytoplankton reached 75%. The representatives of warm-water Atlantic complex (Emiliania huxleyi, Rhizosolenia hebetata f. semispina, Ceratium horridum) were recorded up to 80º N, as indicators of the penetration of warm Atlantic waters into the Arctic basin. The presence of oceanic Atlantic species as warm-water and cold systems in the high Arctic indicates the strengthening of processes of “atlantificacion” in the region.

Annual Cycle of Sportfishing Activity at a Warmwater Discharge into Galveston Bay, Texas

1973 ◽  
Vol 102 (3) ◽  
pp. 573-577 ◽  
Author(s):  
Andre M. Landry ◽  
Kirk Strawn
Keyword(s):  
Annual Cycle ◽  
Galveston Bay

Structural variation in the songs of Atlantic walruses breeding in the Canadian High Arctic

2003 ◽  
Vol 29 (2) ◽  
pp. 297-318 ◽  
Author(s):  
Becky Sjare ◽  
Ian Stirling ◽  
Cheryl Spencer
Keyword(s):  
Structural Variation ◽  
High Arctic ◽  
Canadian High Arctic

Body condition and spring migration in female high-arctic barnacle geeseBranta leucopsis

1996 ◽  
Vol 2 (1) ◽  
pp. 247-251 ◽  
Author(s):  
Ingunn M. Tombre ◽  
Kjell E. Erikstad ◽  
Geir W. Gabrielsen ◽  
Karl-Birger Strann ◽  
Jeffrey M. Black
Keyword(s):  
Body Condition ◽  
High Arctic ◽  
Spring Migration

Trends in the amplitude of Baltic Sea level annual cycle

2008 ◽  
Author(s):  
Birgit Hünicke ◽  
Eduardo Zorita
Keyword(s):  
Baltic Sea ◽  
Sea Level ◽  
Annual Cycle

Pollen morphology of selected tundra plants from the high Arctic of Ny-Ålesund, Svalbard

2013 ◽  
Vol 23 (2) ◽  
pp. 103-115 ◽  
Author(s):  
Yifeng YAO ◽  
Qi ZHAO ◽  
Subir BERA ◽  
Xiaoli LI ◽  
Chengsen LI
Keyword(s):  
Pollen Morphology ◽  
High Arctic
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