Yosemite Valley Birds
نویسندگان
چکیده
منابع مشابه
Enlargement of canopy gaps associated with a fungal pathogen in Yosemite Valley, California
The enlargement of 21 canopy gaps associated with the root pathogen Heterobasidion annosum (Fr.:Fr.) Bref. (; Fomes annosus (Fr.) Karst.) in the mixed-conifer forest of Yosemite Valley was monitored between 1971 and 1998. Mean expanded gap area was 232 m2 (range 38–802 m2) in 1971 and 1455 m2 (range 150–4216 m2) in 1998. The pathogen is primarily spread among trees via root contacts; therefore,...
متن کاملCalibration of numerical models for small debris flows in Yosemite Valley, California, USA
This study compares documented debris flow runout distances with numerical simulations in the Yosemite Valley of California, USA, where about 15% of historical events of slope instability can be classified as debris flows and debris slides (Wieczorek and Snyder, 2004). To model debris flows in the Yosemite Valley, we selected six streams with evidence of historical debris flows; three of the de...
متن کاملPainting Yosemite Valley: a Case Study of Rock Coatings Encountered at Half Dome
No prior research has documented the different types of rock coatings in Yosemite Valley, despite the evident black streaks down Yosemite Falls, the light granitic rock exposed by recent rock falls contrasting with dark rock coatings, and the millions of visitors who have photographed the coated rocks of Yosemite. This paper identifies the types of rock coatings found on Half Dome, in Yosemite ...
متن کاملLyme disease and migrating birds in the Saint Croix River Valley.
During a study of migrating land birds in 1987, we examined over 9,200 individual birds representing 99 species from the Saint Croix River Valley, a Lyme disease-endemic area of east central Minnesota and northwestern Wisconsin. We found that 250 deer tick (Ixodes dammini) larvae and nymphs infested 58 birds from 15 migrant species; 56 ticks (22.4%) were positive for the Lyme disease spirochete...
متن کاملSoftware Visualization and Yosemite National Park
As software systems grow in size and complexity, so does the di culty of understanding and maintaining them. Research in software understanding attempts to mitigate this problem by making various aspects of software development more visible, accessible, and comprehensible. In this paper we propose a hypertext-based approach to software visualization in which navigation in software-space is mode...
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ژورنال
عنوان ژورنال: The Auk
سال: 1904
ISSN: 0004-8038,1938-4254
DOI: 10.2307/4069927