Bats Captured in Two Ponderosa Pine Habitats in North-Central Arizona

1999 ◽  
Vol 44 (4) ◽  
pp. 501 ◽  
Author(s):  
Thomas E. Morrell ◽  
Michael J. Rabe ◽  
James C. deVos ◽  
Heather Green ◽  
C. Richard Miller
2008 ◽  
Vol 101 (4) ◽  
pp. 1253-1265 ◽  
Author(s):  
Christopher J. Hayes ◽  
Tom E. DeGomez ◽  
Karen M. Clancy ◽  
Kelly K. Williams ◽  
Joel D. McMillin ◽  
...  

1993 ◽  
Vol 40 (3) ◽  
pp. 351-359 ◽  
Author(s):  
R. Scott Anderson

AbstractA new record from Potato Lake, central Arizona, details vegetation and climate changes since the mid-Wisconsin for the southern Colorado Plateau. Recovery of a longer record, discrimination of pine pollen to species groups, and identification of macrofossil remains extend Whiteside's (1965) original study. During the mid-Wisconsin (ca. 35,000-21,000 yr B.P.) a mixed forest of Engelmann spruce (Picea engelmannii) and other conifers grew at the site, suggesting a minimum elevational vegetation depression of ca. 460 m. Summer temperatures were as much as 5°C cooler than today. During the late Wisconsin (ca. 21,000-10,400 yr B.P.), even-cooler temperatures (7°C colder than today; ca. 800 m depression) allowed Engelmann spruce alone to predominate. Warming by ca. 10,400 yr B.P. led to the establishment of the modern ponderosa pine (Pinus ponderosa) forest. Thus, the mid-Wisconsin was not warm enough to support ponderosa pine forests in regions where the species predominates today. Climatic estimates presented here are consistent with other lines of evidence suggesting a cool and/or wet mid-Wisconsin, and a cold and/or wet late-Wisconsin climate for much of the Southwest. Potato Lake was almost completely dry during the mid-Holocene, but lake levels increased to near modern conditions by ca. 3000 yr B.P.


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