Effects of Acomastylis rossii tannins on a mammalian herbivore, the North American pika, Ochotona princeps

Oecologia ◽  
1997 ◽  
Vol 109 (1) ◽  
pp. 122-131 ◽  
Author(s):  
M. D. Dearing
Keyword(s):  
North American ◽  
Ochotona Princeps ◽  
The North ◽  
Acomastylis Rossii ◽  
Mammalian Herbivore ◽  
American Pika

North American Pika (Ochotona princeps) as a Late Quaternary Biogeographic Indicator Species

1993 ◽  
Vol 39 (3) ◽  
pp. 373-380 ◽  
Author(s):  
David J. Hafner
Keyword(s):  
Indicator Species ◽  
North American ◽  
Late Quaternary ◽  
Entire Region ◽  
Isolated Populations ◽  
Ochotona Princeps ◽  
Fossil Remains ◽  
Rocky Habitat ◽  
Lower Limits ◽  
American Pika

AbstractReevaluation of Quaternary sites of fossil pika (Ochotona) lends no support for the inference that Nearctic pikas were not restricted to rocky habitat. The saxicolous nature of all widespread, isolated populations of extant Nearctic pikas and their closest Palearctic sister taxa support consideration of O. princeps, and perhaps all Nearctic Quaternary Ochotona , as indicators of cool, mesic, rocky situations. As indicators of rocky microhabitat, fossil remains of O. princeps do not require that the entire region was cool and mesic, but only that suitable rocky microhabitat existed in the vicinity. Use of fossil pika dung alone as indicative of pikas in the immediate community is suspect, as the small, round, and buoyant pellets may be transported downslope by hydraulic flushing of talus habitat. Current local elevational lower limits (E) of appropriate habitat for paleoecological reconstruction at extralimital fossil sites are predicted by the equation: E(m) = 14087 - (56.6)°N - (82.9)°W.

1588: The Bicalutamide Early Prostate Cancer Program: Findings of the North American Trial at 7.7 Years' Median Follow-Up

2006 ◽  
Vol 175 (4S) ◽  
pp. 511-512
Author(s):  
David G. McLeod ◽  
Ira Klimberg ◽  
Donald Gleason ◽  
Gerald Chodak ◽  
Thomas Morris ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
North American ◽  
Early Prostate Cancer ◽  
The North ◽  
Cancer Program

Endoscopic Skull Base Surgery Practice Patterns: Survey of the North American Skull Base Society

2013 ◽  
Vol 74 (S 01) ◽  
Author(s):  
Pete Batra ◽  
Jivianne Lee ◽  
Samuel Barnett ◽  
Brent Senior ◽  
Michael Setzen ◽  
...  
Keyword(s):  
Skull Base ◽  
North American ◽  
Practice Patterns ◽  
Skull Base Surgery ◽  
Endoscopic Skull Base Surgery ◽  
The North
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