scholarly journals The Importance of Willow Thickets for Willow Ptarmigan in Shrub Tundra: The More the Better?

2011 ◽  
Author(s):  
Dorothee Ehrich
Keyword(s):  
Willow Ptarmigan ◽  
Shrub Tundra

Willow Ptarmigan (Lagopus lagopus)

1998 ◽  
Author(s):  
S. J. Hannon ◽  
P. K. Eason ◽  
K. Martin
Keyword(s):  
Willow Ptarmigan ◽  
Lagopus Lagopus

scholarly journals Parental Nutrition and Chick Production in Captive Willow Ptarmigan (Lagopus L. Lagopus)

1982 ◽  
Vol 23 (4) ◽  
pp. 528-538 ◽  
Author(s):  
I. Hanssen ◽  
J. Ness ◽  
J. B. Steen
Keyword(s):  
Willow Ptarmigan ◽  
Parental Nutrition

Dispersal patterns in a harvested willow ptarmigan population

2005 ◽  
Vol 42 (3) ◽  
pp. 453-459 ◽  
Author(s):  
HENRIK BRØSETH ◽  
JARLE TUFTO ◽  
HANS CHR. PEDERSEN ◽  
HARALD STEEN ◽  
LEIF KASTDALEN
Keyword(s):  
Dispersal Patterns ◽  
Willow Ptarmigan

Estradiol Cypionate (ECP) Markedly Improves Survival of Willow Ptarmigan in Captivity

The Condor ◽  
1993 ◽  
Vol 95 (1) ◽  
pp. 211-217
Author(s):  
Kathy Martin ◽  
Cynthia A. Wright
Keyword(s):  
Willow Ptarmigan ◽  
In Captivity

Winter Feeding Program of Alaska Willow Ptarmigan Shown by Crop Contents

The Condor ◽  
1967 ◽  
Vol 69 (1) ◽  
pp. 69-77 ◽  
Author(s):  
Laurence Irving ◽  
George C. West ◽  
Leonard J. Peyton
Keyword(s):  
Willow Ptarmigan ◽  
Feeding Program ◽  
Winter Feeding

scholarly journals Vegetation responses to interglacial warming in the Arctic: examples from Lake El'gygytgyn, Far East Russian Arctic

2013 ◽  
Vol 9 (3) ◽  
pp. 1211-1219 ◽  
Author(s):  
A. V. Lozhkin ◽  
P. M. Anderson
Keyword(s):  
Deciduous Forest ◽  
Russian Far East ◽  
Coniferous Forest ◽  
Far East ◽  
The Arctic ◽  
Dark Coniferous Forest ◽  
Vegetation Responses ◽  
Wide Range ◽  
Lake El’Gygytgyn ◽  
Shrub Tundra

Abstract. Preliminary analyses of Lake El'gygytgyn sediment indicate a wide range of ecosystem responses to warmer than present climates. While palynological work describing all interglacial vegetation is ongoing, sufficient data exist to compare recent warm events (the postglacial thermal maximum, PGTM, and marine isotope stage, MIS5) with "super" interglaciations (MIS11, MIS31). Palynological assemblages associated with these climatic optima suggest two types of vegetation responses: one dominated by deciduous taxa (PGTM, MIS5) and the second by evergreen conifers (MIS11, MIS31). MIS11 forests show a similarity to modern Picea–Larix–Betula–Alnus forests of Siberia. While dark coniferous forest also characterizes MIS31, the pollen taxa show an affinity to the boreal forest of the lower Amur valley (southern Russian Far East). Despite vegetation differences during these thermal maxima, all glacial–interglacial transitions are alike, being dominated by deciduous woody taxa. Initially Betula shrub tundra established and was replaced by tundra with tree-sized shrubs (PGTM), Betula woodland (MIS5), or Betula–Larix (MIS11, MIS31) forest. The consistent occurrence of deciduous forest and/or high shrub tundra before the incidence of maximum warmth underscores the importance of this biome for modeling efforts. The El'gygytgyn data also suggest a possible elimination or massive reduction of Arctic plant communities under extreme warm-earth scenarios.

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