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Effects Of Landscape-Scale Environmental Variation On Greater Sage-Grouse Chick Survival, Michael R. Guttery, David K. Dahlgren, Terry A. Messmer, John W. Connelly, Kerry P. Reese, Pat A. Terletzky, Nathan Burkepile, David N. Koons
Effects Of Landscape-Scale Environmental Variation On Greater Sage-Grouse Chick Survival, Michael R. Guttery, David K. Dahlgren, Terry A. Messmer, John W. Connelly, Kerry P. Reese, Pat A. Terletzky, Nathan Burkepile, David N. Koons
David N. Koons
Effective long-term wildlife conservation planning for a species must be guided by information about population vital ratesat multiple scales. Greater sage-grouse (Centrocercus urophasianus) populations declined substantially during the twentieth century, largely as a result of habitat loss and fragmentation. In addition to the importance of conserving large tracts of suitable habitat, successful conservation of this species will require detailed information about factors affecting vital rates at both the population and range-wide scales. Research has shown that sage-grouse population growth rates are particularly sensitive to hen and chick survival rates. While considerable information on hen survival exists, there is limited information …
The Role Of Social Factors In The Dynamics Of Sound Change: A Case Study Of A Russian Dialect, Alexei Kochetov
The Role Of Social Factors In The Dynamics Of Sound Change: A Case Study Of A Russian Dialect, Alexei Kochetov
Alexei Kochetov
This article presents results of a sociolinguistic study of a Northern Russian dialect as spoken in a small rural community of Pokcha in the Western Urals, Russia. Because of a number of social influences, the dialect has been undergoing a rapid shift towards Standard Russian. The study examines two sound changes in progress: (1) a merger of unstressed mid back vowels and (2) a split of a post-alveolar fricative into two phonemes. The focus of the study is on the role of social factors—age, mobility, education, and sex—in determining the dynamics of the two rather different phonological processes.