COMPARISON OF TWO SAMPLING METHODS FOR THE JEFFREY PINE NEEDLE MINER, COLEOTECHNITES SP. (LEPIDOPTERA: GELECHIIDAE) IN SOUTHERN CALIFORNIA

1982 ◽  
Vol 114 (7) ◽  
pp. 605-615
Author(s):  
Thomas R. Unruh ◽  
Robert F. Luck
Keyword(s):  
Southern California ◽  
Food Resource ◽  
Pine Needle ◽  
San Bernardino Mountains ◽  
Jeffrey Pine ◽  
San Bernardino ◽  
Mean Crowding ◽  
Pine Trees ◽  
The Mean ◽  
Sample Allocation

AbstractWithin and between tree distributions of the Jeffrey pine needle miner, Coleotechnites sp. and its food resource (needles), were investigated on Jeffrey pine trees at three locations in the San Bernardino Mountains of southern California. These data were used to compare sample allocation by the component of variance technique and a method based on the mean crowding relationship. The numbers of samples necessary to estimate the mean at a given precision differed between the techniques in some cases. The mean crowding technique offered several advantages which are fully discussed. A sampling design for the Jeffrey pine needle miner is proposed.

scholarly journals Smog Nitrogen and the Rapid Acidification of Forest Soil, San Bernardino Mountains, Southern California

2007 ◽  
Vol 7 ◽  
pp. 175-180 ◽  
Author(s):  
Yvonne A. Wood ◽  
Mark Fenn ◽  
Thomas Meixner ◽  
Peter J. Shouse ◽  
Joan Breiner ◽  
...  
Keyword(s):  
Southern California ◽  
Mediterranean Climate ◽  
Rapid Change ◽  
Soil Surface ◽  
Atmospheric Nitrogen ◽  
Wet Season ◽  
San Bernardino Mountains ◽  
San Bernardino ◽  
Fog Deposition ◽  
Very High

We report the rapid acidification of forest soils in the San Bernardino Mountains of southern California. After 30 years, soil to a depth of 25 cm has decreased from a pH (measured in 0.01 M CaCl2) of 4.8 to 3.1. At the 50-cm depth, it has changed from a pH of 4.8 to 4.2. We attribute this rapid change in soil reactivity to very high rates of anthropogenic atmospheric nitrogen (N) added to the soil surface (72 kg ha–1 year–1) from wet, dry, and fog deposition under a Mediterranean climate. Our research suggests that a soil textural discontinuity, related to a buried ancient landsurface, contributes to this rapid acidification by controlling the spatial and temporal movement of precipitation into the landsurface. As a result, the depth to which dissolved anthropogenic N as nitrate (NO3) is leached early in the winter wet season is limited to within the top ~130 cm of soil where it accumulates and increases soil acidity.

“We Have Heard the Joyful Sound”: Charles E. Fuller's Radio Broadcast and the Rise of Modern Evangelicalism

1999 ◽  
Vol 9 (1) ◽  
pp. 67-95 ◽  
Author(s):  
Philip Goff
Keyword(s):  
Los Angeles ◽  
Religious Experience ◽  
Southern California ◽  
San Bernardino Mountains ◽  
San Bernardino ◽  
The World ◽  
Radio Broadcast

The message that Grace Fuller had awaited for years arrived at her cabin in the San Bernardino mountains. Here, she sought relief from the Southern California heat that aggravated her tuberculosis, for which there was no easy treatment in 1916. Her husband, Charles, had gone to church alone in Los Angeles to hear Paul Rader, the boxer-turned-evangelist. There, Charles converted to fundamental Christianity. Unable to contain his excitement, he informed her of his call to missions, probably Africa. Certain the heat would do her in, Grace's gratitude for Charles's religious experience was tempered by the idea of being a missionary. She thought to herseif, “I'll go with him anywhere in the world, but oh, my goodness, I hope it isn't to a hotclimate!”

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