scholarly journals The nitrogen window for arctic herbivores: plant phenology and protein gain of migratory caribou ( Rangifer tarandus )

Ecosphere ◽  
2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Perry S. Barboza ◽  
Lindsay L. Van Someren ◽  
David D. Gustine ◽  
M. Syndonia Bret‐Harte
Keyword(s):  
Rangifer Tarandus ◽  
Plant Phenology

Synchrony between caribou calving and plant phenology in depredated and non-depredated populations

2003 ◽  
Vol 81 (10) ◽  
pp. 1709-1714 ◽  
Author(s):  
Eric Post ◽  
Pernille Sporon Bøving ◽  
Christian Pedersen ◽  
Megan A MacArthur
Keyword(s):  
Rangifer Tarandus ◽  
Daily Basis ◽  
Plant Phenology ◽  
River Population ◽  
Large Herbivores ◽  
West Greenland ◽  
Forage Plant ◽  
Forage Plants ◽  
Study Sites ◽  
Two Populations

Two main hypotheses have been proposed to explain reproductive synchrony exhibited by many species of large herbivores: the predation hypothesis and the seasonality hypothesis. Although examples supporting both hypotheses have been presented, no study has compared the intraseasonal progression of parturition and plant phenology in depredated and non-depredated populations of large herbivores. We monitored, on a daily or near-daily basis, the progression of the caribou (Rangifer tarandus) calving seasons in two populations: the Caribou River population in Alaska, U.S.A., where predators of caribou are present and the Kangerlussuaq-Sisimiut population in West Greenland where such predators have been absent for approximately 4000 years. Simultaneously, we quantified directly the phenological progression of caribou forage plants on spatially replicated plots in both study sites. Parturition was significantly more synchronous in the West Greenland (predator-free) population than in the Alaskan (depredated) population. Progression of the calving seasons in both populations was highly synchronized to the progression of forage plant phenology, and the slopes of these relationships were statistically indistinguishable, with 50% of births having occurred when approximately 60%–70% of forage plant species were emergent. These results document clear synchronization of the timing of parturition by caribou to plant phenology, regardless of predation pressure.

РАДИОУГЛЕРОДНЫЕ ДАТИРОВКИ ПАЛЕОНТОЛОГИЧЕСКИХ ОБРАЗЦОВ ВЕРХНЕГО ПЛЕЙСТОЦЕНА НИЖНЕЙ ОБИ

2020 ◽  
Author(s):  
I. Zolnikov ◽  
◽  
A. Vybornov ◽  
A. Anoikin ◽  
A. Postnov ◽  
...  
Keyword(s):  
Mass Spectrometer ◽  
Rangifer Tarandus ◽  
Western Siberia ◽  
Budker Institute ◽  
Mammuthus Primigenius ◽  
Upper Pleistocene ◽  
Ovibos Moschatus ◽  
The North

In the course of studies conducted by IAET SB RAS in the Lower Ob in 2016–2019, the understanding of the conditions for settlement of the Paleolithic population in the north of Western Siberia was significantly supplemented. Dating of a series of paleontological finds was carried out at the "Accelerated mass spectrometer of the Budker Institute of Nucle- ar Physics of SB RAS". The dates obtained show the distribution of the main representatives of the Upper Pleistocene fauna of Subarctica: Mammuthus primigenius – 50,000–15,000 BP, Coelodonta antiquitatis – 43,000–38,000 BP and 27,000–25,000 BP, Rangifer tarandus, Equus ferus – 40,000–10,000 BP, Bison sp. – 50,000–40,000 BP, Ovibos moschatus – 41,000–32,000 BP.

Разработка системы праймеров для секвенирования митохондриального генома северного оленя Rangifer tarandus

2021 ◽  
Vol 57 (1) ◽  
pp. 103-107
Author(s):  
И. В. Артюшин ◽  
Е. А. Коноров ◽  
К. А. Курбаков ◽  
Ю. А. Столповский
Keyword(s):  
Rangifer Tarandus

scholarly journals Physiological Responses and Effects on Meat Quality in Reindeer (Rangifer Tarandus) Transported on Lorries

1984 ◽  
Vol 25 (1) ◽  
pp. 128-138
Author(s):  
I. Haussen ◽  
A. Kyrkjebø ◽  
P. K. Opstad ◽  
R. Prøsch
Keyword(s):  
Meat Quality ◽  
Rangifer Tarandus ◽  
Physiological Responses
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